1 | /* $Id: DBGPlugInWinNt.cpp 69496 2017-10-28 14:55:58Z vboxsync $ */
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2 | /** @file
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3 | * DBGPlugInWindows - Debugger and Guest OS Digger Plugin For Windows NT.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2009-2017 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 |
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19 | /*********************************************************************************************************************************
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20 | * Header Files *
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21 | *********************************************************************************************************************************/
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22 | #define LOG_GROUP LOG_GROUP_DBGF /// @todo add new log group.
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23 | #include "DBGPlugIns.h"
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24 | #include <VBox/vmm/dbgf.h>
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25 | #include <VBox/err.h>
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26 | #include <VBox/param.h>
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27 | #include <iprt/ldr.h>
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28 | #include <iprt/mem.h>
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29 | #include <iprt/stream.h>
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30 | #include <iprt/string.h>
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31 | #include <iprt/formats/pecoff.h>
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32 | #include <iprt/formats/mz.h>
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33 |
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34 |
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35 | /*********************************************************************************************************************************
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36 | * Structures and Typedefs *
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37 | *********************************************************************************************************************************/
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38 |
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39 | /** @name Internal WinNT structures
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40 | * @{ */
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41 | /**
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42 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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43 | * Tested with XP.
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44 | */
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45 | typedef struct NTMTE32
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46 | {
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47 | struct
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48 | {
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49 | uint32_t Flink;
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50 | uint32_t Blink;
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51 | } InLoadOrderLinks,
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52 | InMemoryOrderModuleList,
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53 | InInitializationOrderModuleList;
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54 | uint32_t DllBase;
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55 | uint32_t EntryPoint;
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56 | uint32_t SizeOfImage;
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57 | struct
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58 | {
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59 | uint16_t Length;
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60 | uint16_t MaximumLength;
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61 | uint32_t Buffer;
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62 | } FullDllName,
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63 | BaseDllName;
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64 | uint32_t Flags;
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65 | uint16_t LoadCount;
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66 | uint16_t TlsIndex;
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67 | /* ... there is more ... */
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68 | } NTMTE32;
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69 | typedef NTMTE32 *PNTMTE32;
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70 |
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71 | /**
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72 | * PsLoadedModuleList entry for 64-bit NT aka LDR_DATA_TABLE_ENTRY.
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73 | */
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74 | typedef struct NTMTE64
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75 | {
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76 | struct
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77 | {
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78 | uint64_t Flink;
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79 | uint64_t Blink;
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80 | } InLoadOrderLinks, /**< 0x00 */
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81 | InMemoryOrderModuleList, /**< 0x10 */
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82 | InInitializationOrderModuleList; /**< 0x20 */
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83 | uint64_t DllBase; /**< 0x30 */
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84 | uint64_t EntryPoint; /**< 0x38 */
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85 | uint32_t SizeOfImage; /**< 0x40 */
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86 | uint32_t Alignment; /**< 0x44 */
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87 | struct
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88 | {
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89 | uint16_t Length; /**< 0x48,0x58 */
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90 | uint16_t MaximumLength; /**< 0x4a,0x5a */
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91 | uint32_t Alignment; /**< 0x4c,0x5c */
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92 | uint64_t Buffer; /**< 0x50,0x60 */
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93 | } FullDllName, /**< 0x48 */
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94 | BaseDllName; /**< 0x58 */
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95 | uint32_t Flags; /**< 0x68 */
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96 | uint16_t LoadCount; /**< 0x6c */
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97 | uint16_t TlsIndex; /**< 0x6e */
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98 | /* ... there is more ... */
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99 | } NTMTE64;
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100 | typedef NTMTE64 *PNTMTE64;
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101 |
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102 | /** MTE union. */
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103 | typedef union NTMTE
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104 | {
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105 | NTMTE32 vX_32;
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106 | NTMTE64 vX_64;
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107 | } NTMTE;
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108 | typedef NTMTE *PNTMTE;
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109 |
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110 |
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111 | /**
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112 | * The essential bits of the KUSER_SHARED_DATA structure.
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113 | */
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114 | typedef struct NTKUSERSHAREDDATA
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115 | {
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116 | uint32_t TickCountLowDeprecated;
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117 | uint32_t TickCountMultiplier;
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118 | struct
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119 | {
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120 | uint32_t LowPart;
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121 | int32_t High1Time;
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122 | int32_t High2Time;
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123 |
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124 | } InterruptTime,
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125 | SystemTime,
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126 | TimeZoneBias;
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127 | uint16_t ImageNumberLow;
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128 | uint16_t ImageNumberHigh;
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129 | RTUTF16 NtSystemRoot[260];
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130 | uint32_t MaxStackTraceDepth;
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131 | uint32_t CryptoExponent;
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132 | uint32_t TimeZoneId;
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133 | uint32_t LargePageMinimum;
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134 | uint32_t Reserved2[7];
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135 | uint32_t NtProductType;
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136 | uint8_t ProductTypeIsValid;
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137 | uint8_t abPadding[3];
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138 | uint32_t NtMajorVersion;
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139 | uint32_t NtMinorVersion;
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140 | /* uint8_t ProcessorFeatures[64];
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141 | ...
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142 | */
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143 | } NTKUSERSHAREDDATA;
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144 | typedef NTKUSERSHAREDDATA *PNTKUSERSHAREDDATA;
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145 |
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146 | /** KI_USER_SHARED_DATA for i386 */
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147 | #define NTKUSERSHAREDDATA_WINNT32 UINT32_C(0xffdf0000)
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148 | /** KI_USER_SHARED_DATA for AMD64 */
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149 | #define NTKUSERSHAREDDATA_WINNT64 UINT64_C(0xfffff78000000000)
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150 |
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151 | /** NTKUSERSHAREDDATA::NtProductType */
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152 | typedef enum NTPRODUCTTYPE
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153 | {
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154 | kNtProductType_Invalid = 0,
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155 | kNtProductType_WinNt = 1,
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156 | kNtProductType_LanManNt,
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157 | kNtProductType_Server
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158 | } NTPRODUCTTYPE;
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159 |
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160 |
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161 | /** NT image header union. */
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162 | typedef union NTHDRSU
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163 | {
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164 | IMAGE_NT_HEADERS32 vX_32;
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165 | IMAGE_NT_HEADERS64 vX_64;
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166 | } NTHDRS;
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167 | /** Pointer to NT image header union. */
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168 | typedef NTHDRS *PNTHDRS;
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169 | /** Pointer to const NT image header union. */
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170 | typedef NTHDRS const *PCNTHDRS;
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171 |
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172 | /** @} */
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173 |
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174 |
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175 |
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176 | typedef enum DBGDIGGERWINNTVER
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177 | {
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178 | DBGDIGGERWINNTVER_UNKNOWN,
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179 | DBGDIGGERWINNTVER_3_1,
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180 | DBGDIGGERWINNTVER_3_5,
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181 | DBGDIGGERWINNTVER_4_0,
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182 | DBGDIGGERWINNTVER_5_0,
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183 | DBGDIGGERWINNTVER_5_1,
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184 | DBGDIGGERWINNTVER_6_0
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185 | } DBGDIGGERWINNTVER;
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186 |
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187 | /**
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188 | * WinNT guest OS digger instance data.
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189 | */
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190 | typedef struct DBGDIGGERWINNT
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191 | {
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192 | /** Whether the information is valid or not.
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193 | * (For fending off illegal interface method calls.) */
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194 | bool fValid;
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195 | /** 32-bit (true) or 64-bit (false) */
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196 | bool f32Bit;
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197 |
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198 | /** The NT version. */
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199 | DBGDIGGERWINNTVER enmVer;
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200 | /** NTKUSERSHAREDDATA::NtProductType */
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201 | NTPRODUCTTYPE NtProductType;
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202 | /** NTKUSERSHAREDDATA::NtMajorVersion */
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203 | uint32_t NtMajorVersion;
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204 | /** NTKUSERSHAREDDATA::NtMinorVersion */
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205 | uint32_t NtMinorVersion;
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206 |
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207 | /** The address of the ntoskrnl.exe image. */
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208 | DBGFADDRESS KernelAddr;
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209 | /** The address of the ntoskrnl.exe module table entry. */
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210 | DBGFADDRESS KernelMteAddr;
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211 | /** The address of PsLoadedModuleList. */
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212 | DBGFADDRESS PsLoadedModuleListAddr;
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213 | } DBGDIGGERWINNT;
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214 | /** Pointer to the linux guest OS digger instance data. */
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215 | typedef DBGDIGGERWINNT *PDBGDIGGERWINNT;
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216 |
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217 |
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218 | /**
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219 | * The WinNT digger's loader reader instance data.
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220 | */
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221 | typedef struct DBGDIGGERWINNTRDR
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222 | {
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223 | /** The VM handle (referenced). */
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224 | PUVM pUVM;
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225 | /** The image base. */
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226 | DBGFADDRESS ImageAddr;
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227 | /** The image size. */
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228 | uint32_t cbImage;
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229 | /** The file offset of the SizeOfImage field in the optional header if it
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230 | * needs patching, otherwise set to UINT32_MAX. */
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231 | uint32_t offSizeOfImage;
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232 | /** The correct image size. */
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233 | uint32_t cbCorrectImageSize;
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234 | /** Number of entries in the aMappings table. */
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235 | uint32_t cMappings;
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236 | /** Mapping hint. */
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237 | uint32_t iHint;
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238 | /** Mapping file offset to memory offsets, ordered by file offset. */
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239 | struct
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240 | {
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241 | /** The file offset. */
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242 | uint32_t offFile;
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243 | /** The size of this mapping. */
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244 | uint32_t cbMem;
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245 | /** The offset to the memory from the start of the image. */
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246 | uint32_t offMem;
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247 | } aMappings[1];
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248 | } DBGDIGGERWINNTRDR;
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249 | /** Pointer a WinNT loader reader instance data. */
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250 | typedef DBGDIGGERWINNTRDR *PDBGDIGGERWINNTRDR;
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251 |
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252 |
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253 | /*********************************************************************************************************************************
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254 | * Defined Constants And Macros *
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255 | *********************************************************************************************************************************/
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256 | /** Validates a 32-bit Windows NT kernel address */
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257 | #define WINNT32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x80000000) && (Addr) < UINT32_C(0xfffff000))
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258 | /** Validates a 64-bit Windows NT kernel address */
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259 | #define WINNT64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffff800000000000) && (Addr) < UINT64_C(0xfffffffffffff000))
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260 | /** Validates a kernel address. */
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261 | #define WINNT_VALID_ADDRESS(pThis, Addr) ((pThis)->f32Bit ? WINNT32_VALID_ADDRESS(Addr) : WINNT64_VALID_ADDRESS(Addr))
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262 | /** Versioned and bitness wrapper. */
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263 | #define WINNT_UNION(pThis, pUnion, Member) ((pThis)->f32Bit ? (pUnion)->vX_32. Member : (pUnion)->vX_64. Member )
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264 |
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265 | /** The length (in chars) of the kernel file name (no path). */
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266 | #define WINNT_KERNEL_BASE_NAME_LEN 12
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267 |
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268 | /** WindowsNT on little endian ASCII systems. */
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269 | #define DIG_WINNT_MOD_TAG UINT64_C(0x54696e646f774e54)
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270 |
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271 |
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272 | /*********************************************************************************************************************************
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273 | * Internal Functions *
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274 | *********************************************************************************************************************************/
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275 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData);
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276 |
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277 |
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278 | /*********************************************************************************************************************************
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279 | * Global Variables *
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280 | *********************************************************************************************************************************/
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281 | /** Kernel names. */
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282 | static const RTUTF16 g_wszKernelNames[][WINNT_KERNEL_BASE_NAME_LEN + 1] =
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283 | {
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284 | { 'n', 't', 'o', 's', 'k', 'r', 'n', 'l', '.', 'e', 'x', 'e' }
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285 | };
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286 |
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287 |
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288 |
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289 | /** @callback_method_impl{PFNRTLDRRDRMEMREAD} */
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290 | static DECLCALLBACK(int) dbgDiggerWinNtRdr_Read(void *pvBuf, size_t cb, size_t off, void *pvUser)
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291 | {
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292 | PDBGDIGGERWINNTRDR pThis = (PDBGDIGGERWINNTRDR)pvUser;
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293 | uint32_t offFile = (uint32_t)off;
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294 | AssertReturn(offFile == off, VERR_INVALID_PARAMETER);
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295 |
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296 | uint32_t i = pThis->iHint;
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297 | if (pThis->aMappings[i].offFile > offFile)
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298 | {
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299 | i = pThis->cMappings;
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300 | while (i-- > 0)
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301 | if (offFile >= pThis->aMappings[i].offFile)
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302 | break;
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303 | pThis->iHint = i;
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304 | }
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305 |
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306 | while (cb > 0)
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307 | {
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308 | uint32_t offNextMap = i + 1 < pThis->cMappings ? pThis->aMappings[i + 1].offFile : pThis->cbImage;
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309 | uint32_t offMap = offFile - pThis->aMappings[i].offFile;
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310 |
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311 | /* Read file bits backed by memory. */
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312 | if (offMap < pThis->aMappings[i].cbMem)
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313 | {
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314 | uint32_t cbToRead = pThis->aMappings[i].cbMem - offMap;
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315 | if (cbToRead > cb)
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316 | cbToRead = (uint32_t)cb;
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317 |
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318 | DBGFADDRESS Addr = pThis->ImageAddr;
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319 | DBGFR3AddrAdd(&Addr, pThis->aMappings[i].offMem + offMap);
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320 |
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321 | int rc = DBGFR3MemRead(pThis->pUVM, 0 /*idCpu*/, &Addr, pvBuf, cbToRead);
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322 | if (RT_FAILURE(rc))
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323 | return rc;
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324 |
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325 | /* Apply SizeOfImage patch? */
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326 | if ( pThis->offSizeOfImage != UINT32_MAX
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327 | && offFile < pThis->offSizeOfImage + 4
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328 | && offFile + cbToRead > pThis->offSizeOfImage)
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329 | {
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330 | uint32_t SizeOfImage = pThis->cbCorrectImageSize;
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331 | uint32_t cbPatch = sizeof(SizeOfImage);
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332 | int32_t offPatch = pThis->offSizeOfImage - offFile;
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333 | uint8_t *pbPatch = (uint8_t *)pvBuf + offPatch;
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334 | if (offFile + cbToRead < pThis->offSizeOfImage + cbPatch)
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335 | cbPatch = offFile + cbToRead - pThis->offSizeOfImage;
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336 | while (cbPatch-- > 0)
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337 | {
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338 | if (offPatch >= 0)
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339 | *pbPatch = (uint8_t)SizeOfImage;
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340 | offPatch++;
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341 | pbPatch++;
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342 | SizeOfImage >>= 8;
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343 | }
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344 | }
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345 |
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346 | /* Done? */
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347 | if (cbToRead == cb)
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348 | break;
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349 |
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350 | offFile += cbToRead;
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351 | cb -= cbToRead;
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352 | pvBuf = (char *)pvBuf + cbToRead;
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353 | }
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354 |
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355 | /* Mind the gap. */
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356 | if (offNextMap > offFile)
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357 | {
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358 | uint32_t cbZero = offNextMap - offFile;
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359 | if (cbZero > cb)
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360 | {
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361 | RT_BZERO(pvBuf, cb);
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362 | break;
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363 | }
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364 |
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365 | RT_BZERO(pvBuf, cbZero);
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366 | offFile += cbZero;
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367 | cb -= cbZero;
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368 | pvBuf = (char *)pvBuf + cbZero;
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369 | }
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370 |
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371 | pThis->iHint = ++i;
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372 | }
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373 |
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374 | return VINF_SUCCESS;
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375 | }
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376 |
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377 |
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378 | /** @callback_method_impl{PFNRTLDRRDRMEMDTOR} */
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379 | static DECLCALLBACK(void) dbgDiggerWinNtRdr_Dtor(void *pvUser)
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380 | {
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381 | PDBGDIGGERWINNTRDR pThis = (PDBGDIGGERWINNTRDR)pvUser;
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382 |
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383 | VMR3ReleaseUVM(pThis->pUVM);
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384 | pThis->pUVM = NULL;
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385 | RTMemFree(pvUser);
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386 | }
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387 |
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388 |
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389 | /**
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390 | * Checks if the section headers look okay.
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391 | *
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392 | * @returns true / false.
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393 | * @param paShs Pointer to the section headers.
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394 | * @param cShs Number of headers.
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395 | * @param cbImage The image size reported by NT.
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396 | * @param uRvaRsrc The RVA of the resource directory. UINT32_MAX if
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397 | * no resource directory.
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398 | * @param cbSectAlign The section alignment specified in the header.
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399 | * @param pcbImageCorrect The corrected image size. This is derived from
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400 | * cbImage and virtual range of the section tables.
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401 | *
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402 | * The problem is that NT may choose to drop the
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403 | * last pages in images it loads early, starting at
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404 | * the resource directory. These images will have
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405 | * a page aligned cbImage.
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406 | */
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407 | static bool dbgDiggerWinNtCheckSectHdrsAndImgSize(PCIMAGE_SECTION_HEADER paShs, uint32_t cShs, uint32_t cbImage,
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408 | uint32_t uRvaRsrc, uint32_t cbSectAlign, uint32_t *pcbImageCorrect)
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409 | {
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410 | *pcbImageCorrect = cbImage;
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411 |
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412 | for (uint32_t i = 0; i < cShs; i++)
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413 | {
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414 | if (!paShs[i].Name[0])
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415 | {
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416 | Log(("DigWinNt: Section header #%u has no name\n", i));
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417 | return false;
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418 | }
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419 |
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420 | if (paShs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD)
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421 | continue;
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422 |
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423 | /* Check that sizes are within the same range and that both sizes and
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424 | addresses are within reasonable limits. */
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425 | if ( RT_ALIGN(paShs[i].Misc.VirtualSize, _64K) < RT_ALIGN(paShs[i].SizeOfRawData, _64K)
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426 | || paShs[i].Misc.VirtualSize >= _1G
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427 | || paShs[i].SizeOfRawData >= _1G)
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428 | {
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429 | Log(("DigWinNt: Section header #%u has a VirtualSize=%#x and SizeOfRawData=%#x, that's too much data!\n",
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430 | i, paShs[i].Misc.VirtualSize, paShs[i].SizeOfRawData));
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431 | return false;
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432 | }
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433 | uint32_t uRvaEnd = paShs[i].VirtualAddress + paShs[i].Misc.VirtualSize;
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434 | if (uRvaEnd >= _1G || uRvaEnd < paShs[i].VirtualAddress)
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435 | {
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436 | Log(("DigWinNt: Section header #%u has a VirtualSize=%#x and VirtualAddr=%#x, %#x in total, that's too much!\n",
|
---|
437 | i, paShs[i].Misc.VirtualSize, paShs[i].VirtualAddress, uRvaEnd));
|
---|
438 | return false;
|
---|
439 | }
|
---|
440 |
|
---|
441 | /* Check for images chopped off around '.rsrc'. */
|
---|
442 | if ( cbImage < uRvaEnd
|
---|
443 | && uRvaEnd >= uRvaRsrc)
|
---|
444 | cbImage = RT_ALIGN(uRvaEnd, cbSectAlign);
|
---|
445 |
|
---|
446 | /* Check that the section is within the image. */
|
---|
447 | if (uRvaEnd > cbImage)
|
---|
448 | {
|
---|
449 | Log(("DigWinNt: Section header #%u has a virtual address range beyond the image: %#x TO %#x cbImage=%#x\n",
|
---|
450 | i, paShs[i].VirtualAddress, uRvaEnd, cbImage));
|
---|
451 | return false;
|
---|
452 | }
|
---|
453 | }
|
---|
454 |
|
---|
455 | Assert(*pcbImageCorrect == cbImage || !(*pcbImageCorrect & 0xfff));
|
---|
456 | *pcbImageCorrect = cbImage;
|
---|
457 | return true;
|
---|
458 | }
|
---|
459 |
|
---|
460 |
|
---|
461 | /**
|
---|
462 | * Create a loader module for the in-guest-memory PE module.
|
---|
463 | */
|
---|
464 | static int dbgDiggerWinNtCreateLdrMod(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName, PCDBGFADDRESS pImageAddr,
|
---|
465 | uint32_t cbImage, uint8_t *pbBuf, size_t cbBuf,
|
---|
466 | uint32_t offHdrs, PCNTHDRS pHdrs, PRTLDRMOD phLdrMod)
|
---|
467 | {
|
---|
468 | /*
|
---|
469 | * Allocate and create a reader instance.
|
---|
470 | */
|
---|
471 | uint32_t const cShs = WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections);
|
---|
472 | PDBGDIGGERWINNTRDR pRdr = (PDBGDIGGERWINNTRDR)RTMemAlloc(RT_OFFSETOF(DBGDIGGERWINNTRDR, aMappings[cShs + 2]));
|
---|
473 | if (!pRdr)
|
---|
474 | return VERR_NO_MEMORY;
|
---|
475 |
|
---|
476 | VMR3RetainUVM(pUVM);
|
---|
477 | pRdr->pUVM = pUVM;
|
---|
478 | pRdr->ImageAddr = *pImageAddr;
|
---|
479 | pRdr->cbImage = cbImage;
|
---|
480 | pRdr->cbCorrectImageSize = cbImage;
|
---|
481 | pRdr->offSizeOfImage = UINT32_MAX;
|
---|
482 | pRdr->iHint = 0;
|
---|
483 |
|
---|
484 | /*
|
---|
485 | * Use the section table to construct a more accurate view of the file/
|
---|
486 | * image if it's in the buffer (it should be).
|
---|
487 | */
|
---|
488 | uint32_t uRvaRsrc = UINT32_MAX;
|
---|
489 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE]).Size > 0)
|
---|
490 | uRvaRsrc = WINNT_UNION(pThis, pHdrs, OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE]).VirtualAddress;
|
---|
491 | uint32_t offShs = offHdrs
|
---|
492 | + ( pThis->f32Bit
|
---|
493 | ? pHdrs->vX_32.FileHeader.SizeOfOptionalHeader + RT_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader)
|
---|
494 | : pHdrs->vX_64.FileHeader.SizeOfOptionalHeader + RT_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader));
|
---|
495 | uint32_t cbShs = cShs * sizeof(IMAGE_SECTION_HEADER);
|
---|
496 | PCIMAGE_SECTION_HEADER paShs = (PCIMAGE_SECTION_HEADER)(pbBuf + offShs);
|
---|
497 | if ( offShs + cbShs <= RT_MIN(cbImage, cbBuf)
|
---|
498 | && dbgDiggerWinNtCheckSectHdrsAndImgSize(paShs, cShs, cbImage, uRvaRsrc,
|
---|
499 | WINNT_UNION(pThis, pHdrs, OptionalHeader.SectionAlignment),
|
---|
500 | &pRdr->cbCorrectImageSize))
|
---|
501 | {
|
---|
502 | pRdr->cMappings = 0;
|
---|
503 |
|
---|
504 | for (uint32_t i = 0; i < cShs; i++)
|
---|
505 | if ( paShs[i].SizeOfRawData > 0
|
---|
506 | && paShs[i].PointerToRawData > 0)
|
---|
507 | {
|
---|
508 | uint32_t j = 1;
|
---|
509 | if (!pRdr->cMappings)
|
---|
510 | pRdr->cMappings++;
|
---|
511 | else
|
---|
512 | {
|
---|
513 | while (j < pRdr->cMappings && pRdr->aMappings[j].offFile < paShs[i].PointerToRawData)
|
---|
514 | j++;
|
---|
515 | if (j < pRdr->cMappings)
|
---|
516 | memmove(&pRdr->aMappings[j + 1], &pRdr->aMappings[j], (pRdr->cMappings - j) * sizeof(pRdr->aMappings));
|
---|
517 | }
|
---|
518 | pRdr->aMappings[j].offFile = paShs[i].PointerToRawData;
|
---|
519 | pRdr->aMappings[j].offMem = paShs[i].VirtualAddress;
|
---|
520 | pRdr->aMappings[j].cbMem = i + 1 < cShs
|
---|
521 | ? paShs[i + 1].VirtualAddress - paShs[i].VirtualAddress
|
---|
522 | : paShs[i].Misc.VirtualSize;
|
---|
523 | if (j == pRdr->cMappings)
|
---|
524 | pRdr->cbImage = paShs[i].PointerToRawData + paShs[i].SizeOfRawData;
|
---|
525 | pRdr->cMappings++;
|
---|
526 | }
|
---|
527 |
|
---|
528 | /* Insert the mapping of the headers that isn't covered by the section table. */
|
---|
529 | pRdr->aMappings[0].offFile = 0;
|
---|
530 | pRdr->aMappings[0].offMem = 0;
|
---|
531 | pRdr->aMappings[0].cbMem = pRdr->cMappings ? pRdr->aMappings[1].offFile : pRdr->cbImage;
|
---|
532 |
|
---|
533 | int j = pRdr->cMappings - 1;
|
---|
534 | while (j-- > 0)
|
---|
535 | {
|
---|
536 | uint32_t cbFile = pRdr->aMappings[j + 1].offFile - pRdr->aMappings[j].offFile;
|
---|
537 | if (pRdr->aMappings[j].cbMem > cbFile)
|
---|
538 | pRdr->aMappings[j].cbMem = cbFile;
|
---|
539 | }
|
---|
540 | }
|
---|
541 | else
|
---|
542 | {
|
---|
543 | /*
|
---|
544 | * Fallback, fake identity mapped file data.
|
---|
545 | */
|
---|
546 | pRdr->cMappings = 1;
|
---|
547 | pRdr->aMappings[0].offFile = 0;
|
---|
548 | pRdr->aMappings[0].offMem = 0;
|
---|
549 | pRdr->aMappings[0].cbMem = pRdr->cbImage;
|
---|
550 | }
|
---|
551 |
|
---|
552 | /* Enable the SizeOfImage patching if necessary. */
|
---|
553 | if (pRdr->cbCorrectImageSize != cbImage)
|
---|
554 | {
|
---|
555 | Log(("DigWinNT: The image is really %#x bytes long, not %#x as mapped by NT!\n", pRdr->cbCorrectImageSize, cbImage));
|
---|
556 | pRdr->offSizeOfImage = pThis->f32Bit
|
---|
557 | ? offHdrs + RT_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader.SizeOfImage)
|
---|
558 | : offHdrs + RT_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader.SizeOfImage);
|
---|
559 | }
|
---|
560 |
|
---|
561 | /*
|
---|
562 | * Call the loader to open the PE image for debugging.
|
---|
563 | * Note! It always calls pfnDtor.
|
---|
564 | */
|
---|
565 | RTLDRMOD hLdrMod;
|
---|
566 | int rc = RTLdrOpenInMemory(pszName, RTLDR_O_FOR_DEBUG, RTLDRARCH_WHATEVER, pRdr->cbImage,
|
---|
567 | dbgDiggerWinNtRdr_Read, dbgDiggerWinNtRdr_Dtor, pRdr,
|
---|
568 | &hLdrMod);
|
---|
569 | if (RT_SUCCESS(rc))
|
---|
570 | *phLdrMod = hLdrMod;
|
---|
571 | else
|
---|
572 | *phLdrMod = NIL_RTLDRMOD;
|
---|
573 | return rc;
|
---|
574 | }
|
---|
575 |
|
---|
576 |
|
---|
577 | /**
|
---|
578 | * Process a PE image found in guest memory.
|
---|
579 | *
|
---|
580 | * @param pThis The instance data.
|
---|
581 | * @param pUVM The user mode VM handle.
|
---|
582 | * @param pszName The image name.
|
---|
583 | * @param pImageAddr The image address.
|
---|
584 | * @param cbImage The size of the image.
|
---|
585 | * @param pbBuf Scratch buffer containing the first
|
---|
586 | * RT_MIN(cbBuf, cbImage) bytes of the image.
|
---|
587 | * @param cbBuf The scratch buffer size.
|
---|
588 | */
|
---|
589 | static void dbgDiggerWinNtProcessImage(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName,
|
---|
590 | PCDBGFADDRESS pImageAddr, uint32_t cbImage,
|
---|
591 | uint8_t *pbBuf, size_t cbBuf)
|
---|
592 | {
|
---|
593 | LogFlow(("DigWinNt: %RGp %#x %s\n", pImageAddr->FlatPtr, cbImage, pszName));
|
---|
594 |
|
---|
595 | /*
|
---|
596 | * Do some basic validation first.
|
---|
597 | * This is the usual exteremely verbose and messy code...
|
---|
598 | */
|
---|
599 | Assert(cbBuf >= sizeof(IMAGE_NT_HEADERS64));
|
---|
600 | if ( cbImage < sizeof(IMAGE_NT_HEADERS64)
|
---|
601 | || cbImage >= _1M * 256)
|
---|
602 | {
|
---|
603 | Log(("DigWinNt: %s: Bad image size: %#x\n", pszName, cbImage));
|
---|
604 | return;
|
---|
605 | }
|
---|
606 |
|
---|
607 | /* Dig out the NT/PE headers. */
|
---|
608 | IMAGE_DOS_HEADER const *pMzHdr = (IMAGE_DOS_HEADER const *)pbBuf;
|
---|
609 | PCNTHDRS pHdrs;
|
---|
610 | uint32_t offHdrs;
|
---|
611 | if (pMzHdr->e_magic != IMAGE_DOS_SIGNATURE)
|
---|
612 | {
|
---|
613 | offHdrs = 0;
|
---|
614 | pHdrs = (PCNTHDRS)pbBuf;
|
---|
615 | }
|
---|
616 | else if ( pMzHdr->e_lfanew >= cbImage
|
---|
617 | || pMzHdr->e_lfanew < sizeof(*pMzHdr)
|
---|
618 | || pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) > cbImage)
|
---|
619 | {
|
---|
620 | Log(("DigWinNt: %s: PE header to far into image: %#x cbImage=%#x\n", pszName, pMzHdr->e_lfanew, cbImage));
|
---|
621 | return;
|
---|
622 | }
|
---|
623 | else if ( pMzHdr->e_lfanew < cbBuf
|
---|
624 | && pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) <= cbBuf)
|
---|
625 | {
|
---|
626 | offHdrs = pMzHdr->e_lfanew;
|
---|
627 | pHdrs = (NTHDRS const *)(pbBuf + offHdrs);
|
---|
628 | }
|
---|
629 | else
|
---|
630 | {
|
---|
631 | Log(("DigWinNt: %s: PE header to far into image (lazy bird): %#x\n", pszName, pMzHdr->e_lfanew));
|
---|
632 | return;
|
---|
633 | }
|
---|
634 | if (pHdrs->vX_32.Signature != IMAGE_NT_SIGNATURE)
|
---|
635 | {
|
---|
636 | Log(("DigWinNt: %s: Bad PE signature: %#x\n", pszName, pHdrs->vX_32.Signature));
|
---|
637 | return;
|
---|
638 | }
|
---|
639 |
|
---|
640 | /* The file header is the same on both archs */
|
---|
641 | if (pHdrs->vX_32.FileHeader.Machine != (pThis->f32Bit ? IMAGE_FILE_MACHINE_I386 : IMAGE_FILE_MACHINE_AMD64))
|
---|
642 | {
|
---|
643 | Log(("DigWinNt: %s: Invalid FH.Machine: %#x\n", pszName, pHdrs->vX_32.FileHeader.Machine));
|
---|
644 | return;
|
---|
645 | }
|
---|
646 | if (pHdrs->vX_32.FileHeader.SizeOfOptionalHeader != (pThis->f32Bit ? sizeof(IMAGE_OPTIONAL_HEADER32) : sizeof(IMAGE_OPTIONAL_HEADER64)))
|
---|
647 | {
|
---|
648 | Log(("DigWinNt: %s: Invalid FH.SizeOfOptionalHeader: %#x\n", pszName, pHdrs->vX_32.FileHeader.SizeOfOptionalHeader));
|
---|
649 | return;
|
---|
650 | }
|
---|
651 | if (WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections) > 64)
|
---|
652 | {
|
---|
653 | Log(("DigWinNt: %s: Too many sections: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections)));
|
---|
654 | return;
|
---|
655 | }
|
---|
656 |
|
---|
657 | const uint32_t TimeDateStamp = pHdrs->vX_32.FileHeader.TimeDateStamp;
|
---|
658 |
|
---|
659 | /* The optional header is not... */
|
---|
660 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic) != (pThis->f32Bit ? IMAGE_NT_OPTIONAL_HDR32_MAGIC : IMAGE_NT_OPTIONAL_HDR64_MAGIC))
|
---|
661 | {
|
---|
662 | Log(("DigWinNt: %s: Invalid OH.Magic: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic)));
|
---|
663 | return;
|
---|
664 | }
|
---|
665 | uint32_t cbImageFromHdr = WINNT_UNION(pThis, pHdrs, OptionalHeader.SizeOfImage);
|
---|
666 | if (RT_ALIGN(cbImageFromHdr, _4K) != RT_ALIGN(cbImage, _4K))
|
---|
667 | {
|
---|
668 | Log(("DigWinNt: %s: Invalid OH.SizeOfImage: %#x, expected %#x\n", pszName, cbImageFromHdr, cbImage));
|
---|
669 | return;
|
---|
670 | }
|
---|
671 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes) != IMAGE_NUMBEROF_DIRECTORY_ENTRIES)
|
---|
672 | {
|
---|
673 | Log(("DigWinNt: %s: Invalid OH.NumberOfRvaAndSizes: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes)));
|
---|
674 | return;
|
---|
675 | }
|
---|
676 |
|
---|
677 | /*
|
---|
678 | * Create the module using the in memory image first, falling back
|
---|
679 | * on cached image.
|
---|
680 | */
|
---|
681 | RTLDRMOD hLdrMod;
|
---|
682 | int rc = dbgDiggerWinNtCreateLdrMod(pThis, pUVM, pszName, pImageAddr, cbImage, pbBuf, cbBuf, offHdrs, pHdrs,
|
---|
683 | &hLdrMod);
|
---|
684 | if (RT_FAILURE(rc))
|
---|
685 | hLdrMod = NIL_RTLDRMOD;
|
---|
686 |
|
---|
687 | RTDBGMOD hMod;
|
---|
688 | rc = RTDbgModCreateFromPeImage(&hMod, pszName, NULL, hLdrMod,
|
---|
689 | cbImageFromHdr, TimeDateStamp, DBGFR3AsGetConfig(pUVM));
|
---|
690 | if (RT_FAILURE(rc))
|
---|
691 | {
|
---|
692 | /*
|
---|
693 | * Final fallback is a container module.
|
---|
694 | */
|
---|
695 | rc = RTDbgModCreate(&hMod, pszName, cbImage, 0);
|
---|
696 | if (RT_FAILURE(rc))
|
---|
697 | return;
|
---|
698 |
|
---|
699 | rc = RTDbgModSymbolAdd(hMod, "Headers", 0 /*iSeg*/, 0, cbImage, 0 /*fFlags*/, NULL);
|
---|
700 | AssertRC(rc);
|
---|
701 | }
|
---|
702 |
|
---|
703 | /* Tag the module. */
|
---|
704 | rc = RTDbgModSetTag(hMod, DIG_WINNT_MOD_TAG);
|
---|
705 | AssertRC(rc);
|
---|
706 |
|
---|
707 | /*
|
---|
708 | * Link the module.
|
---|
709 | */
|
---|
710 | RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
711 | if (hAs != NIL_RTDBGAS)
|
---|
712 | rc = RTDbgAsModuleLink(hAs, hMod, pImageAddr->FlatPtr, RTDBGASLINK_FLAGS_REPLACE /*fFlags*/);
|
---|
713 | else
|
---|
714 | rc = VERR_INTERNAL_ERROR;
|
---|
715 | RTDbgModRelease(hMod);
|
---|
716 | RTDbgAsRelease(hAs);
|
---|
717 | }
|
---|
718 |
|
---|
719 |
|
---|
720 | /**
|
---|
721 | * @copydoc DBGFOSREG::pfnQueryInterface
|
---|
722 | */
|
---|
723 | static DECLCALLBACK(void *) dbgDiggerWinNtQueryInterface(PUVM pUVM, void *pvData, DBGFOSINTERFACE enmIf)
|
---|
724 | {
|
---|
725 | RT_NOREF3(pUVM, pvData, enmIf);
|
---|
726 | return NULL;
|
---|
727 | }
|
---|
728 |
|
---|
729 |
|
---|
730 | /**
|
---|
731 | * @copydoc DBGFOSREG::pfnQueryVersion
|
---|
732 | */
|
---|
733 | static DECLCALLBACK(int) dbgDiggerWinNtQueryVersion(PUVM pUVM, void *pvData, char *pszVersion, size_t cchVersion)
|
---|
734 | {
|
---|
735 | RT_NOREF1(pUVM);
|
---|
736 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
737 | Assert(pThis->fValid);
|
---|
738 | const char *pszNtProductType;
|
---|
739 | switch (pThis->NtProductType)
|
---|
740 | {
|
---|
741 | case kNtProductType_WinNt: pszNtProductType = "-WinNT"; break;
|
---|
742 | case kNtProductType_LanManNt: pszNtProductType = "-LanManNT"; break;
|
---|
743 | case kNtProductType_Server: pszNtProductType = "-Server"; break;
|
---|
744 | default: pszNtProductType = ""; break;
|
---|
745 | }
|
---|
746 | RTStrPrintf(pszVersion, cchVersion, "%u.%u-%s%s", pThis->NtMajorVersion, pThis->NtMinorVersion,
|
---|
747 | pThis->f32Bit ? "x86" : "AMD64", pszNtProductType);
|
---|
748 | return VINF_SUCCESS;
|
---|
749 | }
|
---|
750 |
|
---|
751 |
|
---|
752 | /**
|
---|
753 | * @copydoc DBGFOSREG::pfnTerm
|
---|
754 | */
|
---|
755 | static DECLCALLBACK(void) dbgDiggerWinNtTerm(PUVM pUVM, void *pvData)
|
---|
756 | {
|
---|
757 | RT_NOREF1(pUVM);
|
---|
758 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
759 | Assert(pThis->fValid);
|
---|
760 |
|
---|
761 | pThis->fValid = false;
|
---|
762 | }
|
---|
763 |
|
---|
764 |
|
---|
765 | /**
|
---|
766 | * @copydoc DBGFOSREG::pfnRefresh
|
---|
767 | */
|
---|
768 | static DECLCALLBACK(int) dbgDiggerWinNtRefresh(PUVM pUVM, void *pvData)
|
---|
769 | {
|
---|
770 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
771 | NOREF(pThis);
|
---|
772 | Assert(pThis->fValid);
|
---|
773 |
|
---|
774 | /*
|
---|
775 | * For now we'll flush and reload everything.
|
---|
776 | */
|
---|
777 | RTDBGAS hDbgAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
778 | if (hDbgAs != NIL_RTDBGAS)
|
---|
779 | {
|
---|
780 | uint32_t iMod = RTDbgAsModuleCount(hDbgAs);
|
---|
781 | while (iMod-- > 0)
|
---|
782 | {
|
---|
783 | RTDBGMOD hMod = RTDbgAsModuleByIndex(hDbgAs, iMod);
|
---|
784 | if (hMod != NIL_RTDBGMOD)
|
---|
785 | {
|
---|
786 | if (RTDbgModGetTag(hMod) == DIG_WINNT_MOD_TAG)
|
---|
787 | {
|
---|
788 | int rc = RTDbgAsModuleUnlink(hDbgAs, hMod);
|
---|
789 | AssertRC(rc);
|
---|
790 | }
|
---|
791 | RTDbgModRelease(hMod);
|
---|
792 | }
|
---|
793 | }
|
---|
794 | RTDbgAsRelease(hDbgAs);
|
---|
795 | }
|
---|
796 |
|
---|
797 | dbgDiggerWinNtTerm(pUVM, pvData);
|
---|
798 | return dbgDiggerWinNtInit(pUVM, pvData);
|
---|
799 | }
|
---|
800 |
|
---|
801 |
|
---|
802 | /**
|
---|
803 | * @copydoc DBGFOSREG::pfnInit
|
---|
804 | */
|
---|
805 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData)
|
---|
806 | {
|
---|
807 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
808 | Assert(!pThis->fValid);
|
---|
809 |
|
---|
810 | union
|
---|
811 | {
|
---|
812 | uint8_t au8[0x2000];
|
---|
813 | RTUTF16 wsz[0x2000/2];
|
---|
814 | NTKUSERSHAREDDATA UserSharedData;
|
---|
815 | } u;
|
---|
816 | DBGFADDRESS Addr;
|
---|
817 | int rc;
|
---|
818 |
|
---|
819 | /*
|
---|
820 | * Figure the NT version.
|
---|
821 | */
|
---|
822 | DBGFR3AddrFromFlat(pUVM, &Addr, pThis->f32Bit ? NTKUSERSHAREDDATA_WINNT32 : NTKUSERSHAREDDATA_WINNT64);
|
---|
823 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &u, PAGE_SIZE);
|
---|
824 | if (RT_FAILURE(rc))
|
---|
825 | return rc;
|
---|
826 | pThis->NtProductType = u.UserSharedData.ProductTypeIsValid && u.UserSharedData.NtProductType <= kNtProductType_Server
|
---|
827 | ? (NTPRODUCTTYPE)u.UserSharedData.NtProductType
|
---|
828 | : kNtProductType_Invalid;
|
---|
829 | pThis->NtMajorVersion = u.UserSharedData.NtMajorVersion;
|
---|
830 | pThis->NtMinorVersion = u.UserSharedData.NtMinorVersion;
|
---|
831 |
|
---|
832 | /*
|
---|
833 | * Dig out the module chain.
|
---|
834 | */
|
---|
835 | DBGFADDRESS AddrPrev = pThis->PsLoadedModuleListAddr;
|
---|
836 | Addr = pThis->KernelMteAddr;
|
---|
837 | do
|
---|
838 | {
|
---|
839 | /* Read the validate the MTE. */
|
---|
840 | NTMTE Mte;
|
---|
841 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &Mte, pThis->f32Bit ? sizeof(Mte.vX_32) : sizeof(Mte.vX_64));
|
---|
842 | if (RT_FAILURE(rc))
|
---|
843 | break;
|
---|
844 | if (WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Blink) != AddrPrev.FlatPtr)
|
---|
845 | {
|
---|
846 | Log(("DigWinNt: Bad Mte At %RGv - backpointer\n", Addr.FlatPtr));
|
---|
847 | break;
|
---|
848 | }
|
---|
849 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink)) )
|
---|
850 | {
|
---|
851 | Log(("DigWinNt: Bad Mte at %RGv - forward pointer\n", Addr.FlatPtr));
|
---|
852 | break;
|
---|
853 | }
|
---|
854 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)))
|
---|
855 | {
|
---|
856 | Log(("DigWinNt: Bad Mte at %RGv - BaseDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)));
|
---|
857 | break;
|
---|
858 | }
|
---|
859 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)))
|
---|
860 | {
|
---|
861 | Log(("DigWinNt: Bad Mte at %RGv - FullDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)));
|
---|
862 | break;
|
---|
863 | }
|
---|
864 | if ( !WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, DllBase))
|
---|
865 | || WINNT_UNION(pThis, &Mte, SizeOfImage) > _1M*256
|
---|
866 | || WINNT_UNION(pThis, &Mte, EntryPoint) - WINNT_UNION(pThis, &Mte, DllBase) > WINNT_UNION(pThis, &Mte, SizeOfImage) )
|
---|
867 | {
|
---|
868 | Log(("DigWinNt: Bad Mte at %RGv - EntryPoint=%llx SizeOfImage=%x DllBase=%llx\n",
|
---|
869 | Addr.FlatPtr, WINNT_UNION(pThis, &Mte, EntryPoint), WINNT_UNION(pThis, &Mte, SizeOfImage), WINNT_UNION(pThis, &Mte, DllBase)));
|
---|
870 | break;
|
---|
871 | }
|
---|
872 |
|
---|
873 | /* Read the full name. */
|
---|
874 | DBGFADDRESS AddrName;
|
---|
875 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, FullDllName.Buffer));
|
---|
876 | uint16_t cbName = WINNT_UNION(pThis, &Mte, FullDllName.Length);
|
---|
877 | if (cbName < sizeof(u))
|
---|
878 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
879 | else
|
---|
880 | rc = VERR_OUT_OF_RANGE;
|
---|
881 | if (RT_FAILURE(rc))
|
---|
882 | {
|
---|
883 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer));
|
---|
884 | cbName = WINNT_UNION(pThis, &Mte, BaseDllName.Length);
|
---|
885 | if (cbName < sizeof(u))
|
---|
886 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
887 | else
|
---|
888 | rc = VERR_OUT_OF_RANGE;
|
---|
889 | }
|
---|
890 | if (RT_SUCCESS(rc))
|
---|
891 | {
|
---|
892 | u.wsz[cbName/2] = '\0';
|
---|
893 | char *pszName;
|
---|
894 | rc = RTUtf16ToUtf8(u.wsz, &pszName);
|
---|
895 | if (RT_SUCCESS(rc))
|
---|
896 | {
|
---|
897 | /* Read the start of the PE image and pass it along to a worker. */
|
---|
898 | DBGFADDRESS ImageAddr;
|
---|
899 | DBGFR3AddrFromFlat(pUVM, &ImageAddr, WINNT_UNION(pThis, &Mte, DllBase));
|
---|
900 | uint32_t cbImageBuf = RT_MIN(sizeof(u), WINNT_UNION(pThis, &Mte, SizeOfImage));
|
---|
901 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &ImageAddr, &u, cbImageBuf);
|
---|
902 | if (RT_SUCCESS(rc))
|
---|
903 | dbgDiggerWinNtProcessImage(pThis,
|
---|
904 | pUVM,
|
---|
905 | pszName,
|
---|
906 | &ImageAddr,
|
---|
907 | WINNT_UNION(pThis, &Mte, SizeOfImage),
|
---|
908 | &u.au8[0],
|
---|
909 | sizeof(u));
|
---|
910 | RTStrFree(pszName);
|
---|
911 | }
|
---|
912 | }
|
---|
913 |
|
---|
914 | /* next */
|
---|
915 | AddrPrev = Addr;
|
---|
916 | DBGFR3AddrFromFlat(pUVM, &Addr, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink));
|
---|
917 | } while ( Addr.FlatPtr != pThis->KernelMteAddr.FlatPtr
|
---|
918 | && Addr.FlatPtr != pThis->PsLoadedModuleListAddr.FlatPtr);
|
---|
919 |
|
---|
920 | pThis->fValid = true;
|
---|
921 | return VINF_SUCCESS;
|
---|
922 | }
|
---|
923 |
|
---|
924 |
|
---|
925 | /**
|
---|
926 | * @copydoc DBGFOSREG::pfnProbe
|
---|
927 | */
|
---|
928 | static DECLCALLBACK(bool) dbgDiggerWinNtProbe(PUVM pUVM, void *pvData)
|
---|
929 | {
|
---|
930 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
931 | DBGFADDRESS Addr;
|
---|
932 | union
|
---|
933 | {
|
---|
934 | uint8_t au8[8192];
|
---|
935 | uint16_t au16[8192/2];
|
---|
936 | uint32_t au32[8192/4];
|
---|
937 | IMAGE_DOS_HEADER MzHdr;
|
---|
938 | RTUTF16 wsz[8192/2];
|
---|
939 | } u;
|
---|
940 |
|
---|
941 | union
|
---|
942 | {
|
---|
943 | NTMTE32 v32;
|
---|
944 | NTMTE64 v64;
|
---|
945 | } uMte, uMte2, uMte3;
|
---|
946 |
|
---|
947 | /*
|
---|
948 | * Look for the PAGELK section name that seems to be a part of all kernels.
|
---|
949 | * Then try find the module table entry for it. Since it's the first entry
|
---|
950 | * in the PsLoadedModuleList we can easily validate the list head and report
|
---|
951 | * success.
|
---|
952 | */
|
---|
953 | CPUMMODE enmMode = DBGFR3CpuGetMode(pUVM, 0 /*idCpu*/);
|
---|
954 | uint64_t const uStart = enmMode == CPUMMODE_LONG ? UINT64_C(0xffff080000000000) : UINT32_C(0x80001000);
|
---|
955 | uint64_t const uEnd = enmMode == CPUMMODE_LONG ? UINT64_C(0xffffffffffff0000) : UINT32_C(0xffff0000);
|
---|
956 | DBGFADDRESS KernelAddr;
|
---|
957 | for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, uStart);
|
---|
958 | KernelAddr.FlatPtr < uEnd;
|
---|
959 | KernelAddr.FlatPtr += PAGE_SIZE)
|
---|
960 | {
|
---|
961 | int rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
962 | 1, "PAGELK\0", sizeof("PAGELK\0"), &KernelAddr);
|
---|
963 | if (RT_FAILURE(rc))
|
---|
964 | break;
|
---|
965 | DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & PAGE_OFFSET_MASK);
|
---|
966 |
|
---|
967 | /* MZ + PE header. */
|
---|
968 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &KernelAddr, &u, sizeof(u));
|
---|
969 | if ( RT_SUCCESS(rc)
|
---|
970 | && u.MzHdr.e_magic == IMAGE_DOS_SIGNATURE
|
---|
971 | && !(u.MzHdr.e_lfanew & 0x7)
|
---|
972 | && u.MzHdr.e_lfanew >= 0x080
|
---|
973 | && u.MzHdr.e_lfanew <= 0x400) /* W8 is at 0x288*/
|
---|
974 | {
|
---|
975 | if (enmMode != CPUMMODE_LONG)
|
---|
976 | {
|
---|
977 | IMAGE_NT_HEADERS32 const *pHdrs = (IMAGE_NT_HEADERS32 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
978 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
979 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_I386
|
---|
980 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
981 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
982 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL)) == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
983 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
|
---|
984 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
985 | )
|
---|
986 | {
|
---|
987 | /* Find the MTE. */
|
---|
988 | RT_ZERO(uMte);
|
---|
989 | uMte.v32.DllBase = KernelAddr.FlatPtr;
|
---|
990 | uMte.v32.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
991 | uMte.v32.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
|
---|
992 | DBGFADDRESS HitAddr;
|
---|
993 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
994 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
995 | while (RT_SUCCESS(rc))
|
---|
996 | {
|
---|
997 | /* check the name. */
|
---|
998 | DBGFADDRESS MteAddr = HitAddr;
|
---|
999 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE32, DllBase)),
|
---|
1000 | &uMte2.v32, sizeof(uMte2.v32));
|
---|
1001 | if ( RT_SUCCESS(rc)
|
---|
1002 | && uMte2.v32.DllBase == uMte.v32.DllBase
|
---|
1003 | && uMte2.v32.EntryPoint == uMte.v32.EntryPoint
|
---|
1004 | && uMte2.v32.SizeOfImage == uMte.v32.SizeOfImage
|
---|
1005 | && WINNT32_VALID_ADDRESS(uMte2.v32.InLoadOrderLinks.Flink)
|
---|
1006 | && WINNT32_VALID_ADDRESS(uMte2.v32.BaseDllName.Buffer)
|
---|
1007 | && WINNT32_VALID_ADDRESS(uMte2.v32.FullDllName.Buffer)
|
---|
1008 | && uMte2.v32.BaseDllName.Length <= 128
|
---|
1009 | && uMte2.v32.FullDllName.Length <= 260
|
---|
1010 | )
|
---|
1011 | {
|
---|
1012 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.BaseDllName.Buffer),
|
---|
1013 | u.wsz, uMte2.v32.BaseDllName.Length);
|
---|
1014 | u.wsz[uMte2.v32.BaseDllName.Length / 2] = '\0';
|
---|
1015 | if ( RT_SUCCESS(rc)
|
---|
1016 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
1017 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
1018 | )
|
---|
1019 | )
|
---|
1020 | {
|
---|
1021 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
1022 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.InLoadOrderLinks.Blink),
|
---|
1023 | &uMte3.v32, RT_SIZEOFMEMB(NTMTE32, InLoadOrderLinks));
|
---|
1024 | if ( RT_SUCCESS(rc)
|
---|
1025 | && uMte3.v32.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
1026 | && WINNT32_VALID_ADDRESS(uMte3.v32.InLoadOrderLinks.Blink) )
|
---|
1027 | {
|
---|
1028 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
1029 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, Addr.FlatPtr));
|
---|
1030 | pThis->KernelAddr = KernelAddr;
|
---|
1031 | pThis->KernelMteAddr = MteAddr;
|
---|
1032 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
1033 | pThis->f32Bit = true;
|
---|
1034 | return true;
|
---|
1035 | }
|
---|
1036 | }
|
---|
1037 | else if (RT_SUCCESS(rc))
|
---|
1038 | {
|
---|
1039 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
1040 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, u.wsz));
|
---|
1041 | break; /* Not NT kernel */
|
---|
1042 | }
|
---|
1043 | }
|
---|
1044 |
|
---|
1045 | /* next */
|
---|
1046 | DBGFR3AddrAdd(&HitAddr, 4);
|
---|
1047 | if (HitAddr.FlatPtr < uEnd)
|
---|
1048 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
1049 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
1050 | else
|
---|
1051 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
1052 | }
|
---|
1053 | }
|
---|
1054 | }
|
---|
1055 | else
|
---|
1056 | {
|
---|
1057 | IMAGE_NT_HEADERS64 const *pHdrs = (IMAGE_NT_HEADERS64 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
1058 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
1059 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64
|
---|
1060 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
1061 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
1062 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL))
|
---|
1063 | == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
1064 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC
|
---|
1065 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
1066 | )
|
---|
1067 | {
|
---|
1068 | /* Find the MTE. */
|
---|
1069 | RT_ZERO(uMte.v64);
|
---|
1070 | uMte.v64.DllBase = KernelAddr.FlatPtr;
|
---|
1071 | uMte.v64.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
1072 | uMte.v64.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
|
---|
1073 | DBGFADDRESS ScanAddr;
|
---|
1074 | DBGFADDRESS HitAddr;
|
---|
1075 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &ScanAddr, uStart),
|
---|
1076 | uEnd - uStart, 8 /*align*/, &uMte.v64.DllBase, 5 * sizeof(uint32_t), &HitAddr);
|
---|
1077 | while (RT_SUCCESS(rc))
|
---|
1078 | {
|
---|
1079 | /* Read the start of the MTE and check some basic members. */
|
---|
1080 | DBGFADDRESS MteAddr = HitAddr;
|
---|
1081 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE64, DllBase)),
|
---|
1082 | &uMte2.v64, sizeof(uMte2.v64));
|
---|
1083 | if ( RT_SUCCESS(rc)
|
---|
1084 | && uMte2.v64.DllBase == uMte.v64.DllBase
|
---|
1085 | && uMte2.v64.EntryPoint == uMte.v64.EntryPoint
|
---|
1086 | && uMte2.v64.SizeOfImage == uMte.v64.SizeOfImage
|
---|
1087 | && WINNT64_VALID_ADDRESS(uMte2.v64.InLoadOrderLinks.Flink)
|
---|
1088 | && WINNT64_VALID_ADDRESS(uMte2.v64.BaseDllName.Buffer)
|
---|
1089 | && WINNT64_VALID_ADDRESS(uMte2.v64.FullDllName.Buffer)
|
---|
1090 | && uMte2.v64.BaseDllName.Length <= 128
|
---|
1091 | && uMte2.v64.FullDllName.Length <= 260
|
---|
1092 | )
|
---|
1093 | {
|
---|
1094 | /* Try read the base name and compare with known NT kernel names. */
|
---|
1095 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.BaseDllName.Buffer),
|
---|
1096 | u.wsz, uMte2.v64.BaseDllName.Length);
|
---|
1097 | u.wsz[uMte2.v64.BaseDllName.Length / 2] = '\0';
|
---|
1098 | if ( RT_SUCCESS(rc)
|
---|
1099 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
1100 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
1101 | )
|
---|
1102 | )
|
---|
1103 | {
|
---|
1104 | /* Read the link entry of the previous entry in the list and check that its
|
---|
1105 | forward pointer points at the MTE we've found. */
|
---|
1106 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
1107 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.InLoadOrderLinks.Blink),
|
---|
1108 | &uMte3.v64, RT_SIZEOFMEMB(NTMTE64, InLoadOrderLinks));
|
---|
1109 | if ( RT_SUCCESS(rc)
|
---|
1110 | && uMte3.v64.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
1111 | && WINNT64_VALID_ADDRESS(uMte3.v64.InLoadOrderLinks.Blink) )
|
---|
1112 | {
|
---|
1113 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
1114 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, Addr.FlatPtr));
|
---|
1115 | pThis->KernelAddr = KernelAddr;
|
---|
1116 | pThis->KernelMteAddr = MteAddr;
|
---|
1117 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
1118 | pThis->f32Bit = false;
|
---|
1119 | return true;
|
---|
1120 | }
|
---|
1121 | }
|
---|
1122 | else if (RT_SUCCESS(rc))
|
---|
1123 | {
|
---|
1124 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
1125 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, u.wsz));
|
---|
1126 | break; /* Not NT kernel */
|
---|
1127 | }
|
---|
1128 | }
|
---|
1129 |
|
---|
1130 | /* next */
|
---|
1131 | DBGFR3AddrAdd(&HitAddr, 8);
|
---|
1132 | if (HitAddr.FlatPtr < uEnd)
|
---|
1133 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
1134 | 8 /*align*/, &uMte.v64.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
1135 | else
|
---|
1136 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
1137 | }
|
---|
1138 | }
|
---|
1139 | }
|
---|
1140 | }
|
---|
1141 | }
|
---|
1142 | return false;
|
---|
1143 | }
|
---|
1144 |
|
---|
1145 |
|
---|
1146 | /**
|
---|
1147 | * @copydoc DBGFOSREG::pfnDestruct
|
---|
1148 | */
|
---|
1149 | static DECLCALLBACK(void) dbgDiggerWinNtDestruct(PUVM pUVM, void *pvData)
|
---|
1150 | {
|
---|
1151 | RT_NOREF2(pUVM, pvData);
|
---|
1152 | }
|
---|
1153 |
|
---|
1154 |
|
---|
1155 | /**
|
---|
1156 | * @copydoc DBGFOSREG::pfnConstruct
|
---|
1157 | */
|
---|
1158 | static DECLCALLBACK(int) dbgDiggerWinNtConstruct(PUVM pUVM, void *pvData)
|
---|
1159 | {
|
---|
1160 | RT_NOREF1(pUVM);
|
---|
1161 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
1162 | pThis->fValid = false;
|
---|
1163 | pThis->f32Bit = false;
|
---|
1164 | pThis->enmVer = DBGDIGGERWINNTVER_UNKNOWN;
|
---|
1165 | return VINF_SUCCESS;
|
---|
1166 | }
|
---|
1167 |
|
---|
1168 |
|
---|
1169 | const DBGFOSREG g_DBGDiggerWinNt =
|
---|
1170 | {
|
---|
1171 | /* .u32Magic = */ DBGFOSREG_MAGIC,
|
---|
1172 | /* .fFlags = */ 0,
|
---|
1173 | /* .cbData = */ sizeof(DBGDIGGERWINNT),
|
---|
1174 | /* .szName = */ "WinNT",
|
---|
1175 | /* .pfnConstruct = */ dbgDiggerWinNtConstruct,
|
---|
1176 | /* .pfnDestruct = */ dbgDiggerWinNtDestruct,
|
---|
1177 | /* .pfnProbe = */ dbgDiggerWinNtProbe,
|
---|
1178 | /* .pfnInit = */ dbgDiggerWinNtInit,
|
---|
1179 | /* .pfnRefresh = */ dbgDiggerWinNtRefresh,
|
---|
1180 | /* .pfnTerm = */ dbgDiggerWinNtTerm,
|
---|
1181 | /* .pfnQueryVersion = */ dbgDiggerWinNtQueryVersion,
|
---|
1182 | /* .pfnQueryInterface = */ dbgDiggerWinNtQueryInterface,
|
---|
1183 | /* .u32EndMagic = */ DBGFOSREG_MAGIC
|
---|
1184 | };
|
---|
1185 |
|
---|