1 | /* $Id: DBGPlugInWinNt.cpp 56986 2015-07-18 22:12:53Z 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) 2009-2015 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 |
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32 | #include "../Runtime/include/internal/ldrMZ.h" /* ugly */
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33 | #include "../Runtime/include/internal/ldrPE.h" /* ugly */
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34 |
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35 |
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36 | /*******************************************************************************
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37 | * Structures and Typedefs *
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38 | *******************************************************************************/
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39 |
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40 | /** @name Internal WinNT structures
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41 | * @{ */
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42 | /**
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43 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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44 | * Tested with XP.
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45 | */
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46 | typedef struct NTMTE32
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47 | {
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48 | struct
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49 | {
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50 | uint32_t Flink;
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51 | uint32_t Blink;
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52 | } InLoadOrderLinks,
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53 | InMemoryOrderModuleList,
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54 | InInitializationOrderModuleList;
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55 | uint32_t DllBase;
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56 | uint32_t EntryPoint;
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57 | uint32_t SizeOfImage;
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58 | struct
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59 | {
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60 | uint16_t Length;
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61 | uint16_t MaximumLength;
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62 | uint32_t Buffer;
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63 | } FullDllName,
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64 | BaseDllName;
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65 | uint32_t Flags;
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66 | uint16_t LoadCount;
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67 | uint16_t TlsIndex;
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68 | /* ... there is more ... */
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69 | } NTMTE32;
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70 | typedef NTMTE32 *PNTMTE32;
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71 |
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72 | /**
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73 | * PsLoadedModuleList entry for 32-bit NT aka LDR_DATA_TABLE_ENTRY.
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74 | * Tested with XP.
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75 | *
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76 | * @todo This is incomplete and just to get rid of warnings.
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77 | */
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78 | typedef struct NTMTE64
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79 | {
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80 | struct
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81 | {
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82 | uint64_t Flink;
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83 | uint64_t Blink;
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84 | } InLoadOrderLinks, /**< 0x00 */
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85 | InMemoryOrderModuleList, /**< 0x10 */
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86 | InInitializationOrderModuleList; /**< 0x20 */
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87 | uint64_t DllBase; /**< 0x30 */
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88 | uint64_t EntryPoint; /**< 0x38 */
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89 | uint32_t SizeOfImage; /**< 0x40 */
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90 | uint32_t Alignment; /**< 0x44 */
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91 | struct
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92 | {
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93 | uint16_t Length; /**< 0x48,0x58 */
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94 | uint16_t MaximumLength; /**< 0x4a,0x5a */
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95 | uint32_t Alignment; /**< 0x4c,0x5c */
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96 | uint64_t Buffer; /**< 0x50,0x60 */
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97 | } FullDllName, /**< 0x48 */
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98 | BaseDllName; /**< 0x58 */
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99 | uint32_t Flags; /**< 0x68 */
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100 | uint16_t LoadCount; /**< 0x6c */
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101 | uint16_t TlsIndex; /**< 0x6e */
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102 | /* ... there is more ... */
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103 | } NTMTE64;
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104 | typedef NTMTE64 *PNTMTE64;
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105 |
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106 | /** MTE union. */
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107 | typedef union NTMTE
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108 | {
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109 | NTMTE32 vX_32;
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110 | NTMTE64 vX_64;
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111 | } NTMTE;
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112 | typedef NTMTE *PNTMTE;
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113 |
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114 |
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115 | /**
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116 | * The essential bits of the KUSER_SHARED_DATA structure.
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117 | */
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118 | typedef struct NTKUSERSHAREDDATA
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119 | {
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120 | uint32_t TickCountLowDeprecated;
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121 | uint32_t TickCountMultiplier;
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122 | struct
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123 | {
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124 | uint32_t LowPart;
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125 | int32_t High1Time;
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126 | int32_t High2Time;
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127 |
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128 | } InterruptTime,
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129 | SystemTime,
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130 | TimeZoneBias;
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131 | uint16_t ImageNumberLow;
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132 | uint16_t ImageNumberHigh;
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133 | RTUTF16 NtSystemRoot[260];
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134 | uint32_t MaxStackTraceDepth;
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135 | uint32_t CryptoExponent;
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136 | uint32_t TimeZoneId;
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137 | uint32_t LargePageMinimum;
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138 | uint32_t Reserved2[7];
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139 | uint32_t NtProductType;
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140 | uint8_t ProductTypeIsValid;
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141 | uint8_t abPadding[3];
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142 | uint32_t NtMajorVersion;
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143 | uint32_t NtMinorVersion;
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144 | /* uint8_t ProcessorFeatures[64];
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145 | ...
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146 | */
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147 | } NTKUSERSHAREDDATA;
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148 | typedef NTKUSERSHAREDDATA *PNTKUSERSHAREDDATA;
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149 |
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150 | /** KI_USER_SHARED_DATA for i386 */
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151 | #define NTKUSERSHAREDDATA_WINNT32 UINT32_C(0xffdf0000)
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152 | /** KI_USER_SHARED_DATA for AMD64 */
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153 | #define NTKUSERSHAREDDATA_WINNT64 UINT64_C(0xfffff78000000000)
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154 |
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155 | /** NTKUSERSHAREDDATA::NtProductType */
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156 | typedef enum NTPRODUCTTYPE
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157 | {
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158 | kNtProductType_Invalid = 0,
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159 | kNtProductType_WinNt = 1,
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160 | kNtProductType_LanManNt,
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161 | kNtProductType_Server
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162 | } NTPRODUCTTYPE;
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163 |
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164 |
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165 | /** NT image header union. */
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166 | typedef union NTHDRSU
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167 | {
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168 | IMAGE_NT_HEADERS32 vX_32;
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169 | IMAGE_NT_HEADERS64 vX_64;
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170 | } NTHDRS;
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171 | /** Pointer to NT image header union. */
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172 | typedef NTHDRS *PNTHDRS;
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173 | /** Pointer to const NT image header union. */
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174 | typedef NTHDRS const *PCNTHDRS;
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175 |
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176 | /** @} */
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177 |
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178 |
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179 |
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180 | typedef enum DBGDIGGERWINNTVER
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181 | {
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182 | DBGDIGGERWINNTVER_UNKNOWN,
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183 | DBGDIGGERWINNTVER_3_1,
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184 | DBGDIGGERWINNTVER_3_5,
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185 | DBGDIGGERWINNTVER_4_0,
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186 | DBGDIGGERWINNTVER_5_0,
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187 | DBGDIGGERWINNTVER_5_1,
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188 | DBGDIGGERWINNTVER_6_0
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189 | } DBGDIGGERWINNTVER;
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190 |
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191 | /**
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192 | * WinNT guest OS digger instance data.
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193 | */
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194 | typedef struct DBGDIGGERWINNT
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195 | {
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196 | /** Whether the information is valid or not.
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197 | * (For fending off illegal interface method calls.) */
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198 | bool fValid;
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199 | /** 32-bit (true) or 64-bit (false) */
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200 | bool f32Bit;
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201 |
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202 | /** The NT version. */
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203 | DBGDIGGERWINNTVER enmVer;
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204 | /** NTKUSERSHAREDDATA::NtProductType */
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205 | NTPRODUCTTYPE NtProductType;
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206 | /** NTKUSERSHAREDDATA::NtMajorVersion */
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207 | uint32_t NtMajorVersion;
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208 | /** NTKUSERSHAREDDATA::NtMinorVersion */
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209 | uint32_t NtMinorVersion;
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210 |
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211 | /** The address of the ntoskrnl.exe image. */
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212 | DBGFADDRESS KernelAddr;
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213 | /** The address of the ntoskrnl.exe module table entry. */
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214 | DBGFADDRESS KernelMteAddr;
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215 | /** The address of PsLoadedModuleList. */
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216 | DBGFADDRESS PsLoadedModuleListAddr;
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217 | } DBGDIGGERWINNT;
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218 | /** Pointer to the linux guest OS digger instance data. */
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219 | typedef DBGDIGGERWINNT *PDBGDIGGERWINNT;
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220 |
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221 |
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222 | /**
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223 | * The WinNT digger's loader reader instance data.
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224 | */
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225 | typedef struct DBGDIGGERWINNTRDR
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226 | {
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227 | /** The VM handle (referenced). */
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228 | PUVM pUVM;
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229 | /** The image base. */
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230 | DBGFADDRESS ImageAddr;
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231 | /** The image size. */
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232 | uint32_t cbImage;
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233 | /** The file offset of the SizeOfImage field in the optional header if it
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234 | * needs patching, otherwise set to UINT32_MAX. */
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235 | uint32_t offSizeOfImage;
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236 | /** The correct image size. */
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237 | uint32_t cbCorrectImageSize;
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238 | /** Number of entries in the aMappings table. */
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239 | uint32_t cMappings;
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240 | /** Mapping hint. */
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241 | uint32_t iHint;
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242 | /** Mapping file offset to memory offsets, ordered by file offset. */
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243 | struct
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244 | {
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245 | /** The file offset. */
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246 | uint32_t offFile;
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247 | /** The size of this mapping. */
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248 | uint32_t cbMem;
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249 | /** The offset to the memory from the start of the image. */
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250 | uint32_t offMem;
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251 | } aMappings[1];
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252 | } DBGDIGGERWINNTRDR;
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253 | /** Pointer a WinNT loader reader instance data. */
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254 | typedef DBGDIGGERWINNTRDR *PDBGDIGGERWINNTRDR;
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255 |
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256 |
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257 | /*******************************************************************************
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258 | * Defined Constants And Macros *
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259 | *******************************************************************************/
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260 | /** Validates a 32-bit Windows NT kernel address */
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261 | #define WINNT32_VALID_ADDRESS(Addr) ((Addr) > UINT32_C(0x80000000) && (Addr) < UINT32_C(0xfffff000))
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262 | /** Validates a 64-bit Windows NT kernel address */
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263 | #define WINNT64_VALID_ADDRESS(Addr) ((Addr) > UINT64_C(0xffff800000000000) && (Addr) < UINT64_C(0xfffffffffffff000))
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264 | /** Validates a kernel address. */
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265 | #define WINNT_VALID_ADDRESS(pThis, Addr) ((pThis)->f32Bit ? WINNT32_VALID_ADDRESS(Addr) : WINNT64_VALID_ADDRESS(Addr))
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266 | /** Versioned and bitness wrapper. */
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267 | #define WINNT_UNION(pThis, pUnion, Member) ((pThis)->f32Bit ? (pUnion)->vX_32. Member : (pUnion)->vX_64. Member )
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268 |
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269 | /** The length (in chars) of the kernel file name (no path). */
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270 | #define WINNT_KERNEL_BASE_NAME_LEN 12
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271 |
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272 | /** WindowsNT on little endian ASCII systems. */
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273 | #define DIG_WINNT_MOD_TAG UINT64_C(0x54696e646f774e54)
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274 |
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275 |
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276 | /*******************************************************************************
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277 | * Internal Functions *
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278 | *******************************************************************************/
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279 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData);
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280 |
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281 |
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282 | /*******************************************************************************
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283 | * Global Variables *
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284 | *******************************************************************************/
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285 | /** Kernel names. */
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286 | static const RTUTF16 g_wszKernelNames[][WINNT_KERNEL_BASE_NAME_LEN + 1] =
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287 | {
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288 | { 'n', 't', 'o', 's', 'k', 'r', 'n', 'l', '.', 'e', 'x', 'e' }
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289 | };
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290 |
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291 |
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292 |
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293 | /** @callback_method_impl{PFNRTLDRRDRMEMREAD} */
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294 | static DECLCALLBACK(int) dbgDiggerWinNtRdr_Read(void *pvBuf, size_t cb, size_t off, void *pvUser)
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295 | {
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296 | PDBGDIGGERWINNTRDR pThis = (PDBGDIGGERWINNTRDR)pvUser;
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297 | uint32_t offFile = (uint32_t)off;
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298 | AssertReturn(offFile == off, VERR_INVALID_PARAMETER);
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299 |
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300 | uint32_t i = pThis->iHint;
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301 | if (pThis->aMappings[i].offFile > offFile)
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302 | {
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303 | i = pThis->cMappings;
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304 | while (i-- > 0)
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305 | if (offFile >= pThis->aMappings[i].offFile)
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306 | break;
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307 | pThis->iHint = i;
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308 | }
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309 |
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310 | while (cb > 0)
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311 | {
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312 | uint32_t offNextMap = i + 1 < pThis->cMappings ? pThis->aMappings[i + 1].offFile : pThis->cbImage;
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313 | uint32_t offMap = offFile - pThis->aMappings[i].offFile;
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314 |
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315 | /* Read file bits backed by memory. */
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316 | if (offMap < pThis->aMappings[i].cbMem)
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317 | {
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318 | uint32_t cbToRead = pThis->aMappings[i].cbMem - offMap;
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319 | if (cbToRead > cb)
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320 | cbToRead = (uint32_t)cb;
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321 |
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322 | DBGFADDRESS Addr = pThis->ImageAddr;
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323 | DBGFR3AddrAdd(&Addr, pThis->aMappings[i].offMem + offMap);
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324 |
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325 | int rc = DBGFR3MemRead(pThis->pUVM, 0 /*idCpu*/, &Addr, pvBuf, cbToRead);
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326 | if (RT_FAILURE(rc))
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327 | return rc;
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328 |
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329 | /* Apply SizeOfImage patch? */
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330 | if ( pThis->offSizeOfImage != UINT32_MAX
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331 | && offFile < pThis->offSizeOfImage + 4
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332 | && offFile + cbToRead > pThis->offSizeOfImage)
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333 | {
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334 | uint32_t SizeOfImage = pThis->cbCorrectImageSize;
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335 | uint32_t cbPatch = sizeof(SizeOfImage);
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336 | int32_t offPatch = pThis->offSizeOfImage - offFile;
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337 | uint8_t *pbPatch = (uint8_t *)pvBuf + offPatch;
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338 | if (offFile + cbToRead < pThis->offSizeOfImage + cbPatch)
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339 | cbPatch = offFile + cbToRead - pThis->offSizeOfImage;
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340 | while (cbPatch-- > 0)
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341 | {
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342 | if (offPatch >= 0)
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343 | *pbPatch = (uint8_t)SizeOfImage;
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344 | offPatch++;
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345 | pbPatch++;
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346 | SizeOfImage >>= 8;
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347 | }
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348 | }
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349 |
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350 | /* Done? */
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351 | if (cbToRead == cb)
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352 | break;
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353 |
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354 | offFile += cbToRead;
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355 | cb -= cbToRead;
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356 | pvBuf = (char *)pvBuf + cbToRead;
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357 | }
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358 |
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359 | /* Mind the gap. */
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360 | if (offNextMap > offFile)
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361 | {
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362 | uint32_t cbZero = offNextMap - offFile;
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363 | if (cbZero > cb)
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364 | {
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365 | RT_BZERO(pvBuf, cb);
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366 | break;
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367 | }
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368 |
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369 | RT_BZERO(pvBuf, cbZero);
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370 | offFile += cbZero;
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371 | cb -= cbZero;
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372 | pvBuf = (char *)pvBuf + cbZero;
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373 | }
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374 |
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375 | pThis->iHint = ++i;
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376 | }
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377 |
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378 | return VINF_SUCCESS;
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379 | }
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380 |
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381 |
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382 | /** @callback_method_impl{PFNRTLDRRDRMEMDTOR} */
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383 | static DECLCALLBACK(void) dbgDiggerWinNtRdr_Dtor(void *pvUser)
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384 | {
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385 | PDBGDIGGERWINNTRDR pThis = (PDBGDIGGERWINNTRDR)pvUser;
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386 |
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387 | VMR3ReleaseUVM(pThis->pUVM);
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388 | pThis->pUVM = NULL;
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389 | RTMemFree(pvUser);
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390 | }
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391 |
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392 |
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393 | /**
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394 | * Checks if the section headers look okay.
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395 | *
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396 | * @returns true / false.
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397 | * @param paShs Pointer to the section headers.
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398 | * @param cShs Number of headers.
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399 | * @param cbImage The image size reported by NT.
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400 | * @param uRvaRsrc The RVA of the resource directory. UINT32_MAX if
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401 | * no resource directory.
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402 | * @param cbSectAlign The section alignment specified in the header.
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403 | * @param pcbImageCorrect The corrected image size. This is derived from
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404 | * cbImage and virtual range of the section tables.
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405 | *
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406 | * The problem is that NT may choose to drop the
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407 | * last pages in images it loads early, starting at
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408 | * the resource directory. These images will have
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409 | * a page aligned cbImage.
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410 | */
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411 | static bool dbgDiggerWinNtCheckSectHdrsAndImgSize(PCIMAGE_SECTION_HEADER paShs, uint32_t cShs, uint32_t cbImage,
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412 | uint32_t uRvaRsrc, uint32_t cbSectAlign, uint32_t *pcbImageCorrect)
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413 | {
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414 | *pcbImageCorrect = cbImage;
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415 |
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416 | for (uint32_t i = 0; i < cShs; i++)
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417 | {
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418 | if (!paShs[i].Name[0])
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419 | {
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420 | Log(("DigWinNt: Section header #%u has no name\n", i));
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421 | return false;
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422 | }
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423 |
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424 | if (paShs[i].Characteristics & IMAGE_SCN_TYPE_NOLOAD)
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425 | continue;
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426 |
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427 | /* Check that sizes are within the same range and that both sizes and
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428 | addresses are within reasonable limits. */
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429 | if ( RT_ALIGN(paShs[i].Misc.VirtualSize, _64K) < RT_ALIGN(paShs[i].SizeOfRawData, _64K)
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430 | || paShs[i].Misc.VirtualSize >= _1G
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431 | || paShs[i].SizeOfRawData >= _1G)
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432 | {
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433 | Log(("DigWinNt: Section header #%u has a VirtualSize=%#x and SizeOfRawData=%#x, that's too much data!\n",
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434 | i, paShs[i].Misc.VirtualSize, paShs[i].SizeOfRawData));
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435 | return false;
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436 | }
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437 | uint32_t uRvaEnd = paShs[i].VirtualAddress + paShs[i].Misc.VirtualSize;
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---|
438 | if (uRvaEnd >= _1G || uRvaEnd < paShs[i].VirtualAddress)
|
---|
439 | {
|
---|
440 | Log(("DigWinNt: Section header #%u has a VirtualSize=%#x and VirtualAddr=%#x, %#x in total, that's too much!\n",
|
---|
441 | i, paShs[i].Misc.VirtualSize, paShs[i].VirtualAddress, uRvaEnd));
|
---|
442 | return false;
|
---|
443 | }
|
---|
444 |
|
---|
445 | /* Check for images chopped off around '.rsrc'. */
|
---|
446 | if ( cbImage < uRvaEnd
|
---|
447 | && uRvaEnd >= uRvaRsrc)
|
---|
448 | cbImage = RT_ALIGN(uRvaEnd, cbSectAlign);
|
---|
449 |
|
---|
450 | /* Check that the section is within the image. */
|
---|
451 | if (uRvaEnd > cbImage)
|
---|
452 | {
|
---|
453 | Log(("DigWinNt: Section header #%u has a virtual address range beyond the image: %#x TO %#x cbImage=%#x\n",
|
---|
454 | i, paShs[i].VirtualAddress, uRvaEnd, cbImage));
|
---|
455 | return false;
|
---|
456 | }
|
---|
457 | }
|
---|
458 |
|
---|
459 | Assert(*pcbImageCorrect == cbImage || !(*pcbImageCorrect & 0xfff));
|
---|
460 | *pcbImageCorrect = cbImage;
|
---|
461 | return true;
|
---|
462 | }
|
---|
463 |
|
---|
464 |
|
---|
465 | /**
|
---|
466 | * Create a loader module for the in-guest-memory PE module.
|
---|
467 | */
|
---|
468 | static int dbgDiggerWinNtCreateLdrMod(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName, PCDBGFADDRESS pImageAddr,
|
---|
469 | uint32_t cbImage, uint8_t *pbBuf, size_t cbBuf,
|
---|
470 | uint32_t offHdrs, PCNTHDRS pHdrs, PRTLDRMOD phLdrMod)
|
---|
471 | {
|
---|
472 | /*
|
---|
473 | * Allocate and create a reader instance.
|
---|
474 | */
|
---|
475 | uint32_t const cShs = WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections);
|
---|
476 | PDBGDIGGERWINNTRDR pRdr = (PDBGDIGGERWINNTRDR)RTMemAlloc(RT_OFFSETOF(DBGDIGGERWINNTRDR, aMappings[cShs + 2]));
|
---|
477 | if (!pRdr)
|
---|
478 | return VERR_NO_MEMORY;
|
---|
479 |
|
---|
480 | VMR3RetainUVM(pUVM);
|
---|
481 | pRdr->pUVM = pUVM;
|
---|
482 | pRdr->ImageAddr = *pImageAddr;
|
---|
483 | pRdr->cbImage = cbImage;
|
---|
484 | pRdr->cbCorrectImageSize = cbImage;
|
---|
485 | pRdr->offSizeOfImage = UINT32_MAX;
|
---|
486 | pRdr->iHint = 0;
|
---|
487 |
|
---|
488 | /*
|
---|
489 | * Use the section table to construct a more accurate view of the file/
|
---|
490 | * image if it's in the buffer (it should be).
|
---|
491 | */
|
---|
492 | uint32_t uRvaRsrc = UINT32_MAX;
|
---|
493 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE]).Size > 0)
|
---|
494 | uRvaRsrc = WINNT_UNION(pThis, pHdrs, OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE]).VirtualAddress;
|
---|
495 | uint32_t offShs = offHdrs
|
---|
496 | + ( pThis->f32Bit
|
---|
497 | ? pHdrs->vX_32.FileHeader.SizeOfOptionalHeader + RT_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader)
|
---|
498 | : pHdrs->vX_64.FileHeader.SizeOfOptionalHeader + RT_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader));
|
---|
499 | uint32_t cbShs = cShs * sizeof(IMAGE_SECTION_HEADER);
|
---|
500 | PCIMAGE_SECTION_HEADER paShs = (PCIMAGE_SECTION_HEADER)(pbBuf + offShs);
|
---|
501 | if ( offShs + cbShs <= RT_MIN(cbImage, cbBuf)
|
---|
502 | && dbgDiggerWinNtCheckSectHdrsAndImgSize(paShs, cShs, cbImage, uRvaRsrc,
|
---|
503 | WINNT_UNION(pThis, pHdrs, OptionalHeader.SectionAlignment),
|
---|
504 | &pRdr->cbCorrectImageSize))
|
---|
505 | {
|
---|
506 | pRdr->cMappings = 0;
|
---|
507 |
|
---|
508 | for (uint32_t i = 0; i < cShs; i++)
|
---|
509 | if ( paShs[i].SizeOfRawData > 0
|
---|
510 | && paShs[i].PointerToRawData > 0)
|
---|
511 | {
|
---|
512 | uint32_t j = 1;
|
---|
513 | if (!pRdr->cMappings)
|
---|
514 | pRdr->cMappings++;
|
---|
515 | else
|
---|
516 | {
|
---|
517 | while (j < pRdr->cMappings && pRdr->aMappings[j].offFile < paShs[i].PointerToRawData)
|
---|
518 | j++;
|
---|
519 | if (j < pRdr->cMappings)
|
---|
520 | memmove(&pRdr->aMappings[j + 1], &pRdr->aMappings[j], (pRdr->cMappings - j) * sizeof(pRdr->aMappings));
|
---|
521 | }
|
---|
522 | pRdr->aMappings[j].offFile = paShs[i].PointerToRawData;
|
---|
523 | pRdr->aMappings[j].offMem = paShs[i].VirtualAddress;
|
---|
524 | pRdr->aMappings[j].cbMem = i + 1 < cShs
|
---|
525 | ? paShs[i + 1].VirtualAddress - paShs[i].VirtualAddress
|
---|
526 | : paShs[i].Misc.VirtualSize;
|
---|
527 | if (j == pRdr->cMappings)
|
---|
528 | pRdr->cbImage = paShs[i].PointerToRawData + paShs[i].SizeOfRawData;
|
---|
529 | pRdr->cMappings++;
|
---|
530 | }
|
---|
531 |
|
---|
532 | /* Insert the mapping of the headers that isn't covered by the section table. */
|
---|
533 | pRdr->aMappings[0].offFile = 0;
|
---|
534 | pRdr->aMappings[0].offMem = 0;
|
---|
535 | pRdr->aMappings[0].cbMem = pRdr->cMappings ? pRdr->aMappings[1].offFile : pRdr->cbImage;
|
---|
536 |
|
---|
537 | int j = pRdr->cMappings - 1;
|
---|
538 | while (j-- > 0)
|
---|
539 | {
|
---|
540 | uint32_t cbFile = pRdr->aMappings[j + 1].offFile - pRdr->aMappings[j].offFile;
|
---|
541 | if (pRdr->aMappings[j].cbMem > cbFile)
|
---|
542 | pRdr->aMappings[j].cbMem = cbFile;
|
---|
543 | }
|
---|
544 | }
|
---|
545 | else
|
---|
546 | {
|
---|
547 | /*
|
---|
548 | * Fallback, fake identity mapped file data.
|
---|
549 | */
|
---|
550 | pRdr->cMappings = 1;
|
---|
551 | pRdr->aMappings[0].offFile = 0;
|
---|
552 | pRdr->aMappings[0].offMem = 0;
|
---|
553 | pRdr->aMappings[0].cbMem = pRdr->cbImage;
|
---|
554 | }
|
---|
555 |
|
---|
556 | /* Enable the SizeOfImage patching if necessary. */
|
---|
557 | if (pRdr->cbCorrectImageSize != cbImage)
|
---|
558 | {
|
---|
559 | Log(("DigWinNT: The image is really %#x bytes long, not %#x as mapped by NT!\n", pRdr->cbCorrectImageSize, cbImage));
|
---|
560 | pRdr->offSizeOfImage = pThis->f32Bit
|
---|
561 | ? offHdrs + RT_OFFSETOF(IMAGE_NT_HEADERS32, OptionalHeader.SizeOfImage)
|
---|
562 | : offHdrs + RT_OFFSETOF(IMAGE_NT_HEADERS64, OptionalHeader.SizeOfImage);
|
---|
563 | }
|
---|
564 |
|
---|
565 | /*
|
---|
566 | * Call the loader to open the PE image for debugging.
|
---|
567 | * Note! It always calls pfnDtor.
|
---|
568 | */
|
---|
569 | RTLDRMOD hLdrMod;
|
---|
570 | int rc = RTLdrOpenInMemory(pszName, RTLDR_O_FOR_DEBUG, RTLDRARCH_WHATEVER, pRdr->cbImage,
|
---|
571 | dbgDiggerWinNtRdr_Read, dbgDiggerWinNtRdr_Dtor, pRdr,
|
---|
572 | &hLdrMod);
|
---|
573 | if (RT_SUCCESS(rc))
|
---|
574 | *phLdrMod = hLdrMod;
|
---|
575 | else
|
---|
576 | *phLdrMod = NIL_RTLDRMOD;
|
---|
577 | return rc;
|
---|
578 | }
|
---|
579 |
|
---|
580 |
|
---|
581 | /**
|
---|
582 | * Process a PE image found in guest memory.
|
---|
583 | *
|
---|
584 | * @param pThis The instance data.
|
---|
585 | * @param pUVM The user mode VM handle.
|
---|
586 | * @param pszName The image name.
|
---|
587 | * @param pImageAddr The image address.
|
---|
588 | * @param cbImage The size of the image.
|
---|
589 | * @param pbBuf Scratch buffer containing the first
|
---|
590 | * RT_MIN(cbBuf, cbImage) bytes of the image.
|
---|
591 | * @param cbBuf The scratch buffer size.
|
---|
592 | */
|
---|
593 | static void dbgDiggerWinNtProcessImage(PDBGDIGGERWINNT pThis, PUVM pUVM, const char *pszName,
|
---|
594 | PCDBGFADDRESS pImageAddr, uint32_t cbImage,
|
---|
595 | uint8_t *pbBuf, size_t cbBuf)
|
---|
596 | {
|
---|
597 | LogFlow(("DigWinNt: %RGp %#x %s\n", pImageAddr->FlatPtr, cbImage, pszName));
|
---|
598 |
|
---|
599 | /*
|
---|
600 | * Do some basic validation first.
|
---|
601 | * This is the usual exteremely verbose and messy code...
|
---|
602 | */
|
---|
603 | Assert(cbBuf >= sizeof(IMAGE_NT_HEADERS64));
|
---|
604 | if ( cbImage < sizeof(IMAGE_NT_HEADERS64)
|
---|
605 | || cbImage >= _1M * 256)
|
---|
606 | {
|
---|
607 | Log(("DigWinNt: %s: Bad image size: %#x\n", pszName, cbImage));
|
---|
608 | return;
|
---|
609 | }
|
---|
610 |
|
---|
611 | /* Dig out the NT/PE headers. */
|
---|
612 | IMAGE_DOS_HEADER const *pMzHdr = (IMAGE_DOS_HEADER const *)pbBuf;
|
---|
613 | PCNTHDRS pHdrs;
|
---|
614 | uint32_t offHdrs;
|
---|
615 | if (pMzHdr->e_magic != IMAGE_DOS_SIGNATURE)
|
---|
616 | {
|
---|
617 | offHdrs = 0;
|
---|
618 | pHdrs = (PCNTHDRS)pbBuf;
|
---|
619 | }
|
---|
620 | else if ( pMzHdr->e_lfanew >= cbImage
|
---|
621 | || pMzHdr->e_lfanew < sizeof(*pMzHdr)
|
---|
622 | || pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) > cbImage)
|
---|
623 | {
|
---|
624 | Log(("DigWinNt: %s: PE header to far into image: %#x cbImage=%#x\n", pszName, pMzHdr->e_lfanew, cbImage));
|
---|
625 | return;
|
---|
626 | }
|
---|
627 | else if ( pMzHdr->e_lfanew < cbBuf
|
---|
628 | && pMzHdr->e_lfanew + sizeof(IMAGE_NT_HEADERS64) <= cbBuf)
|
---|
629 | {
|
---|
630 | offHdrs = pMzHdr->e_lfanew;
|
---|
631 | pHdrs = (NTHDRS const *)(pbBuf + offHdrs);
|
---|
632 | }
|
---|
633 | else
|
---|
634 | {
|
---|
635 | Log(("DigWinNt: %s: PE header to far into image (lazy bird): %#x\n", pszName, pMzHdr->e_lfanew));
|
---|
636 | return;
|
---|
637 | }
|
---|
638 | if (pHdrs->vX_32.Signature != IMAGE_NT_SIGNATURE)
|
---|
639 | {
|
---|
640 | Log(("DigWinNt: %s: Bad PE signature: %#x\n", pszName, pHdrs->vX_32.Signature));
|
---|
641 | return;
|
---|
642 | }
|
---|
643 |
|
---|
644 | /* The file header is the same on both archs */
|
---|
645 | if (pHdrs->vX_32.FileHeader.Machine != (pThis->f32Bit ? IMAGE_FILE_MACHINE_I386 : IMAGE_FILE_MACHINE_AMD64))
|
---|
646 | {
|
---|
647 | Log(("DigWinNt: %s: Invalid FH.Machine: %#x\n", pszName, pHdrs->vX_32.FileHeader.Machine));
|
---|
648 | return;
|
---|
649 | }
|
---|
650 | if (pHdrs->vX_32.FileHeader.SizeOfOptionalHeader != (pThis->f32Bit ? sizeof(IMAGE_OPTIONAL_HEADER32) : sizeof(IMAGE_OPTIONAL_HEADER64)))
|
---|
651 | {
|
---|
652 | Log(("DigWinNt: %s: Invalid FH.SizeOfOptionalHeader: %#x\n", pszName, pHdrs->vX_32.FileHeader.SizeOfOptionalHeader));
|
---|
653 | return;
|
---|
654 | }
|
---|
655 | if (WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections) > 64)
|
---|
656 | {
|
---|
657 | Log(("DigWinNt: %s: Too many sections: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, FileHeader.NumberOfSections)));
|
---|
658 | return;
|
---|
659 | }
|
---|
660 |
|
---|
661 | const uint32_t TimeDateStamp = pHdrs->vX_32.FileHeader.TimeDateStamp;
|
---|
662 |
|
---|
663 | /* The optional header is not... */
|
---|
664 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic) != (pThis->f32Bit ? IMAGE_NT_OPTIONAL_HDR32_MAGIC : IMAGE_NT_OPTIONAL_HDR64_MAGIC))
|
---|
665 | {
|
---|
666 | Log(("DigWinNt: %s: Invalid OH.Magic: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.Magic)));
|
---|
667 | return;
|
---|
668 | }
|
---|
669 | uint32_t cbImageFromHdr = WINNT_UNION(pThis, pHdrs, OptionalHeader.SizeOfImage);
|
---|
670 | if (RT_ALIGN(cbImageFromHdr, _4K) != RT_ALIGN(cbImage, _4K))
|
---|
671 | {
|
---|
672 | Log(("DigWinNt: %s: Invalid OH.SizeOfImage: %#x, expected %#x\n", pszName, cbImageFromHdr, cbImage));
|
---|
673 | return;
|
---|
674 | }
|
---|
675 | if (WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes) != IMAGE_NUMBEROF_DIRECTORY_ENTRIES)
|
---|
676 | {
|
---|
677 | Log(("DigWinNt: %s: Invalid OH.NumberOfRvaAndSizes: %#x\n", pszName, WINNT_UNION(pThis, pHdrs, OptionalHeader.NumberOfRvaAndSizes)));
|
---|
678 | return;
|
---|
679 | }
|
---|
680 |
|
---|
681 | /*
|
---|
682 | * Create the module using the in memory image first, falling back
|
---|
683 | * on cached image.
|
---|
684 | */
|
---|
685 | RTLDRMOD hLdrMod;
|
---|
686 | int rc = dbgDiggerWinNtCreateLdrMod(pThis, pUVM, pszName, pImageAddr, cbImage, pbBuf, cbBuf, offHdrs, pHdrs,
|
---|
687 | &hLdrMod);
|
---|
688 | if (RT_FAILURE(rc))
|
---|
689 | hLdrMod = NIL_RTLDRMOD;
|
---|
690 |
|
---|
691 | RTDBGMOD hMod;
|
---|
692 | rc = RTDbgModCreateFromPeImage(&hMod, pszName, NULL, hLdrMod,
|
---|
693 | cbImageFromHdr, TimeDateStamp, DBGFR3AsGetConfig(pUVM));
|
---|
694 | if (RT_FAILURE(rc))
|
---|
695 | {
|
---|
696 | /*
|
---|
697 | * Final fallback is a container module.
|
---|
698 | */
|
---|
699 | rc = RTDbgModCreate(&hMod, pszName, cbImage, 0);
|
---|
700 | if (RT_FAILURE(rc))
|
---|
701 | return;
|
---|
702 |
|
---|
703 | rc = RTDbgModSymbolAdd(hMod, "Headers", 0 /*iSeg*/, 0, cbImage, 0 /*fFlags*/, NULL);
|
---|
704 | AssertRC(rc);
|
---|
705 | }
|
---|
706 |
|
---|
707 | /* Tag the module. */
|
---|
708 | rc = RTDbgModSetTag(hMod, DIG_WINNT_MOD_TAG);
|
---|
709 | AssertRC(rc);
|
---|
710 |
|
---|
711 | /*
|
---|
712 | * Link the module.
|
---|
713 | */
|
---|
714 | RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
715 | if (hAs != NIL_RTDBGAS)
|
---|
716 | rc = RTDbgAsModuleLink(hAs, hMod, pImageAddr->FlatPtr, RTDBGASLINK_FLAGS_REPLACE /*fFlags*/);
|
---|
717 | else
|
---|
718 | rc = VERR_INTERNAL_ERROR;
|
---|
719 | RTDbgModRelease(hMod);
|
---|
720 | RTDbgAsRelease(hAs);
|
---|
721 | }
|
---|
722 |
|
---|
723 |
|
---|
724 | /**
|
---|
725 | * @copydoc DBGFOSREG::pfnQueryInterface
|
---|
726 | */
|
---|
727 | static DECLCALLBACK(void *) dbgDiggerWinNtQueryInterface(PUVM pUVM, void *pvData, DBGFOSINTERFACE enmIf)
|
---|
728 | {
|
---|
729 | return NULL;
|
---|
730 | }
|
---|
731 |
|
---|
732 |
|
---|
733 | /**
|
---|
734 | * @copydoc DBGFOSREG::pfnQueryVersion
|
---|
735 | */
|
---|
736 | static DECLCALLBACK(int) dbgDiggerWinNtQueryVersion(PUVM pUVM, void *pvData, char *pszVersion, size_t cchVersion)
|
---|
737 | {
|
---|
738 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
739 | Assert(pThis->fValid);
|
---|
740 | const char *pszNtProductType;
|
---|
741 | switch (pThis->NtProductType)
|
---|
742 | {
|
---|
743 | case kNtProductType_WinNt: pszNtProductType = "-WinNT"; break;
|
---|
744 | case kNtProductType_LanManNt: pszNtProductType = "-LanManNT"; break;
|
---|
745 | case kNtProductType_Server: pszNtProductType = "-Server"; break;
|
---|
746 | default: pszNtProductType = ""; break;
|
---|
747 | }
|
---|
748 | RTStrPrintf(pszVersion, cchVersion, "%u.%u-%s%s", pThis->NtMajorVersion, pThis->NtMinorVersion,
|
---|
749 | pThis->f32Bit ? "x86" : "AMD64", pszNtProductType);
|
---|
750 | return VINF_SUCCESS;
|
---|
751 | }
|
---|
752 |
|
---|
753 |
|
---|
754 | /**
|
---|
755 | * @copydoc DBGFOSREG::pfnTerm
|
---|
756 | */
|
---|
757 | static DECLCALLBACK(void) dbgDiggerWinNtTerm(PUVM pUVM, void *pvData)
|
---|
758 | {
|
---|
759 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
760 | Assert(pThis->fValid);
|
---|
761 |
|
---|
762 | pThis->fValid = false;
|
---|
763 | }
|
---|
764 |
|
---|
765 |
|
---|
766 | /**
|
---|
767 | * @copydoc DBGFOSREG::pfnRefresh
|
---|
768 | */
|
---|
769 | static DECLCALLBACK(int) dbgDiggerWinNtRefresh(PUVM pUVM, void *pvData)
|
---|
770 | {
|
---|
771 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
772 | NOREF(pThis);
|
---|
773 | Assert(pThis->fValid);
|
---|
774 |
|
---|
775 | /*
|
---|
776 | * For now we'll flush and reload everything.
|
---|
777 | */
|
---|
778 | RTDBGAS hDbgAs = DBGFR3AsResolveAndRetain(pUVM, DBGF_AS_KERNEL);
|
---|
779 | if (hDbgAs != NIL_RTDBGAS)
|
---|
780 | {
|
---|
781 | uint32_t iMod = RTDbgAsModuleCount(hDbgAs);
|
---|
782 | while (iMod-- > 0)
|
---|
783 | {
|
---|
784 | RTDBGMOD hMod = RTDbgAsModuleByIndex(hDbgAs, iMod);
|
---|
785 | if (hMod != NIL_RTDBGMOD)
|
---|
786 | {
|
---|
787 | if (RTDbgModGetTag(hMod) == DIG_WINNT_MOD_TAG)
|
---|
788 | {
|
---|
789 | int rc = RTDbgAsModuleUnlink(hDbgAs, hMod);
|
---|
790 | AssertRC(rc);
|
---|
791 | }
|
---|
792 | RTDbgModRelease(hMod);
|
---|
793 | }
|
---|
794 | }
|
---|
795 | RTDbgAsRelease(hDbgAs);
|
---|
796 | }
|
---|
797 |
|
---|
798 | dbgDiggerWinNtTerm(pUVM, pvData);
|
---|
799 | return dbgDiggerWinNtInit(pUVM, pvData);
|
---|
800 | }
|
---|
801 |
|
---|
802 |
|
---|
803 | /**
|
---|
804 | * @copydoc DBGFOSREG::pfnInit
|
---|
805 | */
|
---|
806 | static DECLCALLBACK(int) dbgDiggerWinNtInit(PUVM pUVM, void *pvData)
|
---|
807 | {
|
---|
808 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
809 | Assert(!pThis->fValid);
|
---|
810 |
|
---|
811 | union
|
---|
812 | {
|
---|
813 | uint8_t au8[0x2000];
|
---|
814 | RTUTF16 wsz[0x2000/2];
|
---|
815 | NTKUSERSHAREDDATA UserSharedData;
|
---|
816 | } u;
|
---|
817 | DBGFADDRESS Addr;
|
---|
818 | int rc;
|
---|
819 |
|
---|
820 | /*
|
---|
821 | * Figure the NT version.
|
---|
822 | */
|
---|
823 | DBGFR3AddrFromFlat(pUVM, &Addr, pThis->f32Bit ? NTKUSERSHAREDDATA_WINNT32 : NTKUSERSHAREDDATA_WINNT64);
|
---|
824 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &u, PAGE_SIZE);
|
---|
825 | if (RT_FAILURE(rc))
|
---|
826 | return rc;
|
---|
827 | pThis->NtProductType = u.UserSharedData.ProductTypeIsValid && u.UserSharedData.NtProductType <= kNtProductType_Server
|
---|
828 | ? (NTPRODUCTTYPE)u.UserSharedData.NtProductType
|
---|
829 | : kNtProductType_Invalid;
|
---|
830 | pThis->NtMajorVersion = u.UserSharedData.NtMajorVersion;
|
---|
831 | pThis->NtMinorVersion = u.UserSharedData.NtMinorVersion;
|
---|
832 |
|
---|
833 | /*
|
---|
834 | * Dig out the module chain.
|
---|
835 | */
|
---|
836 | DBGFADDRESS AddrPrev = pThis->PsLoadedModuleListAddr;
|
---|
837 | Addr = pThis->KernelMteAddr;
|
---|
838 | do
|
---|
839 | {
|
---|
840 | /* Read the validate the MTE. */
|
---|
841 | NTMTE Mte;
|
---|
842 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &Addr, &Mte, pThis->f32Bit ? sizeof(Mte.vX_32) : sizeof(Mte.vX_64));
|
---|
843 | if (RT_FAILURE(rc))
|
---|
844 | break;
|
---|
845 | if (WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Blink) != AddrPrev.FlatPtr)
|
---|
846 | {
|
---|
847 | Log(("DigWinNt: Bad Mte At %RGv - backpointer\n", Addr.FlatPtr));
|
---|
848 | break;
|
---|
849 | }
|
---|
850 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink)) )
|
---|
851 | {
|
---|
852 | Log(("DigWinNt: Bad Mte at %RGv - forward pointer\n", Addr.FlatPtr));
|
---|
853 | break;
|
---|
854 | }
|
---|
855 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)))
|
---|
856 | {
|
---|
857 | Log(("DigWinNt: Bad Mte at %RGv - BaseDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer)));
|
---|
858 | break;
|
---|
859 | }
|
---|
860 | if (!WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)))
|
---|
861 | {
|
---|
862 | Log(("DigWinNt: Bad Mte at %RGv - FullDllName=%llx\n", Addr.FlatPtr, WINNT_UNION(pThis, &Mte, FullDllName.Buffer)));
|
---|
863 | break;
|
---|
864 | }
|
---|
865 | if ( !WINNT_VALID_ADDRESS(pThis, WINNT_UNION(pThis, &Mte, DllBase))
|
---|
866 | || WINNT_UNION(pThis, &Mte, SizeOfImage) > _1M*256
|
---|
867 | || WINNT_UNION(pThis, &Mte, EntryPoint) - WINNT_UNION(pThis, &Mte, DllBase) > WINNT_UNION(pThis, &Mte, SizeOfImage) )
|
---|
868 | {
|
---|
869 | Log(("DigWinNt: Bad Mte at %RGv - EntryPoint=%llx SizeOfImage=%x DllBase=%llx\n",
|
---|
870 | Addr.FlatPtr, WINNT_UNION(pThis, &Mte, EntryPoint), WINNT_UNION(pThis, &Mte, SizeOfImage), WINNT_UNION(pThis, &Mte, DllBase)));
|
---|
871 | break;
|
---|
872 | }
|
---|
873 |
|
---|
874 | /* Read the full name. */
|
---|
875 | DBGFADDRESS AddrName;
|
---|
876 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, FullDllName.Buffer));
|
---|
877 | uint16_t cbName = WINNT_UNION(pThis, &Mte, FullDllName.Length);
|
---|
878 | if (cbName < sizeof(u))
|
---|
879 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
880 | else
|
---|
881 | rc = VERR_OUT_OF_RANGE;
|
---|
882 | if (RT_FAILURE(rc))
|
---|
883 | {
|
---|
884 | DBGFR3AddrFromFlat(pUVM, &AddrName, WINNT_UNION(pThis, &Mte, BaseDllName.Buffer));
|
---|
885 | cbName = WINNT_UNION(pThis, &Mte, BaseDllName.Length);
|
---|
886 | if (cbName < sizeof(u))
|
---|
887 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &AddrName, &u, cbName);
|
---|
888 | else
|
---|
889 | rc = VERR_OUT_OF_RANGE;
|
---|
890 | }
|
---|
891 | if (RT_SUCCESS(rc))
|
---|
892 | {
|
---|
893 | u.wsz[cbName/2] = '\0';
|
---|
894 | char *pszName;
|
---|
895 | rc = RTUtf16ToUtf8(u.wsz, &pszName);
|
---|
896 | if (RT_SUCCESS(rc))
|
---|
897 | {
|
---|
898 | /* Read the start of the PE image and pass it along to a worker. */
|
---|
899 | DBGFADDRESS ImageAddr;
|
---|
900 | DBGFR3AddrFromFlat(pUVM, &ImageAddr, WINNT_UNION(pThis, &Mte, DllBase));
|
---|
901 | uint32_t cbImageBuf = RT_MIN(sizeof(u), WINNT_UNION(pThis, &Mte, SizeOfImage));
|
---|
902 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &ImageAddr, &u, cbImageBuf);
|
---|
903 | if (RT_SUCCESS(rc))
|
---|
904 | dbgDiggerWinNtProcessImage(pThis,
|
---|
905 | pUVM,
|
---|
906 | pszName,
|
---|
907 | &ImageAddr,
|
---|
908 | WINNT_UNION(pThis, &Mte, SizeOfImage),
|
---|
909 | &u.au8[0],
|
---|
910 | sizeof(u));
|
---|
911 | RTStrFree(pszName);
|
---|
912 | }
|
---|
913 | }
|
---|
914 |
|
---|
915 | /* next */
|
---|
916 | AddrPrev = Addr;
|
---|
917 | DBGFR3AddrFromFlat(pUVM, &Addr, WINNT_UNION(pThis, &Mte, InLoadOrderLinks.Flink));
|
---|
918 | } while ( Addr.FlatPtr != pThis->KernelMteAddr.FlatPtr
|
---|
919 | && Addr.FlatPtr != pThis->PsLoadedModuleListAddr.FlatPtr);
|
---|
920 |
|
---|
921 | pThis->fValid = true;
|
---|
922 | return VINF_SUCCESS;
|
---|
923 | }
|
---|
924 |
|
---|
925 |
|
---|
926 | /**
|
---|
927 | * @copydoc DBGFOSREG::pfnProbe
|
---|
928 | */
|
---|
929 | static DECLCALLBACK(bool) dbgDiggerWinNtProbe(PUVM pUVM, void *pvData)
|
---|
930 | {
|
---|
931 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
932 | DBGFADDRESS Addr;
|
---|
933 | union
|
---|
934 | {
|
---|
935 | uint8_t au8[8192];
|
---|
936 | uint16_t au16[8192/2];
|
---|
937 | uint32_t au32[8192/4];
|
---|
938 | IMAGE_DOS_HEADER MzHdr;
|
---|
939 | RTUTF16 wsz[8192/2];
|
---|
940 | } u;
|
---|
941 |
|
---|
942 | union
|
---|
943 | {
|
---|
944 | NTMTE32 v32;
|
---|
945 | NTMTE64 v64;
|
---|
946 | } uMte, uMte2, uMte3;
|
---|
947 |
|
---|
948 | /*
|
---|
949 | * Look for the PAGELK section name that seems to be a part of all kernels.
|
---|
950 | * Then try find the module table entry for it. Since it's the first entry
|
---|
951 | * in the PsLoadedModuleList we can easily validate the list head and report
|
---|
952 | * success.
|
---|
953 | */
|
---|
954 | CPUMMODE enmMode = DBGFR3CpuGetMode(pUVM, 0 /*idCpu*/);
|
---|
955 | uint64_t const uStart = enmMode == CPUMMODE_LONG ? UINT64_C(0xfffff80000000000) : UINT32_C(0x80001000);
|
---|
956 | uint64_t const uEnd = enmMode == CPUMMODE_LONG ? UINT64_C(0xffffffffffff0000) : UINT32_C(0xffff0000);
|
---|
957 | DBGFADDRESS KernelAddr;
|
---|
958 | for (DBGFR3AddrFromFlat(pUVM, &KernelAddr, uStart);
|
---|
959 | KernelAddr.FlatPtr < uEnd;
|
---|
960 | KernelAddr.FlatPtr += PAGE_SIZE)
|
---|
961 | {
|
---|
962 | int rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
963 | 1, "PAGELK\0", sizeof("PAGELK\0"), &KernelAddr);
|
---|
964 | if (RT_FAILURE(rc))
|
---|
965 | break;
|
---|
966 | DBGFR3AddrSub(&KernelAddr, KernelAddr.FlatPtr & PAGE_OFFSET_MASK);
|
---|
967 |
|
---|
968 | /* MZ + PE header. */
|
---|
969 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, &KernelAddr, &u, sizeof(u));
|
---|
970 | if ( RT_SUCCESS(rc)
|
---|
971 | && u.MzHdr.e_magic == IMAGE_DOS_SIGNATURE
|
---|
972 | && !(u.MzHdr.e_lfanew & 0x7)
|
---|
973 | && u.MzHdr.e_lfanew >= 0x080
|
---|
974 | && u.MzHdr.e_lfanew <= 0x400) /* W8 is at 0x288*/
|
---|
975 | {
|
---|
976 | if (enmMode != CPUMMODE_LONG)
|
---|
977 | {
|
---|
978 | IMAGE_NT_HEADERS32 const *pHdrs = (IMAGE_NT_HEADERS32 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
979 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
980 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_I386
|
---|
981 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
982 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
983 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL)) == IMAGE_FILE_EXECUTABLE_IMAGE
|
---|
984 | && pHdrs->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
|
---|
985 | && pHdrs->OptionalHeader.NumberOfRvaAndSizes == IMAGE_NUMBEROF_DIRECTORY_ENTRIES
|
---|
986 | )
|
---|
987 | {
|
---|
988 | /* Find the MTE. */
|
---|
989 | RT_ZERO(uMte);
|
---|
990 | uMte.v32.DllBase = KernelAddr.FlatPtr;
|
---|
991 | uMte.v32.EntryPoint = KernelAddr.FlatPtr + pHdrs->OptionalHeader.AddressOfEntryPoint;
|
---|
992 | uMte.v32.SizeOfImage = pHdrs->OptionalHeader.SizeOfImage;
|
---|
993 | DBGFADDRESS HitAddr;
|
---|
994 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &KernelAddr, uEnd - KernelAddr.FlatPtr,
|
---|
995 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
996 | while (RT_SUCCESS(rc))
|
---|
997 | {
|
---|
998 | /* check the name. */
|
---|
999 | DBGFADDRESS MteAddr = HitAddr;
|
---|
1000 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrSub(&MteAddr, RT_OFFSETOF(NTMTE32, DllBase)),
|
---|
1001 | &uMte2.v32, sizeof(uMte2.v32));
|
---|
1002 | if ( RT_SUCCESS(rc)
|
---|
1003 | && uMte2.v32.DllBase == uMte.v32.DllBase
|
---|
1004 | && uMte2.v32.EntryPoint == uMte.v32.EntryPoint
|
---|
1005 | && uMte2.v32.SizeOfImage == uMte.v32.SizeOfImage
|
---|
1006 | && WINNT32_VALID_ADDRESS(uMte2.v32.InLoadOrderLinks.Flink)
|
---|
1007 | && WINNT32_VALID_ADDRESS(uMte2.v32.BaseDllName.Buffer)
|
---|
1008 | && WINNT32_VALID_ADDRESS(uMte2.v32.FullDllName.Buffer)
|
---|
1009 | && uMte2.v32.BaseDllName.Length <= 128
|
---|
1010 | && uMte2.v32.FullDllName.Length <= 260
|
---|
1011 | )
|
---|
1012 | {
|
---|
1013 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.BaseDllName.Buffer),
|
---|
1014 | u.wsz, uMte2.v32.BaseDllName.Length);
|
---|
1015 | u.wsz[uMte2.v32.BaseDllName.Length / 2] = '\0';
|
---|
1016 | if ( RT_SUCCESS(rc)
|
---|
1017 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
1018 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
1019 | )
|
---|
1020 | )
|
---|
1021 | {
|
---|
1022 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
1023 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v32.InLoadOrderLinks.Blink),
|
---|
1024 | &uMte3.v32, RT_SIZEOFMEMB(NTMTE32, InLoadOrderLinks));
|
---|
1025 | if ( RT_SUCCESS(rc)
|
---|
1026 | && uMte3.v32.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
1027 | && WINNT32_VALID_ADDRESS(uMte3.v32.InLoadOrderLinks.Blink) )
|
---|
1028 | {
|
---|
1029 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
1030 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, Addr.FlatPtr));
|
---|
1031 | pThis->KernelAddr = KernelAddr;
|
---|
1032 | pThis->KernelMteAddr = MteAddr;
|
---|
1033 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
1034 | pThis->f32Bit = true;
|
---|
1035 | return true;
|
---|
1036 | }
|
---|
1037 | }
|
---|
1038 | else if (RT_SUCCESS(rc))
|
---|
1039 | {
|
---|
1040 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
1041 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v32.SizeOfImage, u.wsz));
|
---|
1042 | break; /* Not NT kernel */
|
---|
1043 | }
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | /* next */
|
---|
1047 | DBGFR3AddrAdd(&HitAddr, 4);
|
---|
1048 | if (HitAddr.FlatPtr < uEnd)
|
---|
1049 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
1050 | 4 /*align*/, &uMte.v32.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
1051 | else
|
---|
1052 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
1053 | }
|
---|
1054 | }
|
---|
1055 | }
|
---|
1056 | else
|
---|
1057 | {
|
---|
1058 | IMAGE_NT_HEADERS64 const *pHdrs = (IMAGE_NT_HEADERS64 const *)&u.au8[u.MzHdr.e_lfanew];
|
---|
1059 | if ( pHdrs->Signature == IMAGE_NT_SIGNATURE
|
---|
1060 | && pHdrs->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64
|
---|
1061 | && pHdrs->FileHeader.SizeOfOptionalHeader == sizeof(pHdrs->OptionalHeader)
|
---|
1062 | && pHdrs->FileHeader.NumberOfSections >= 10 /* the kernel has lots */
|
---|
1063 | && (pHdrs->FileHeader.Characteristics & (IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DLL)) == 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 | /* check the name. */
|
---|
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 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/, DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.BaseDllName.Buffer),
|
---|
1095 | u.wsz, uMte2.v64.BaseDllName.Length);
|
---|
1096 | u.wsz[uMte2.v64.BaseDllName.Length / 2] = '\0';
|
---|
1097 | if ( RT_SUCCESS(rc)
|
---|
1098 | && ( !RTUtf16ICmp(u.wsz, g_wszKernelNames[0])
|
---|
1099 | /* || !RTUtf16ICmp(u.wsz, g_wszKernelNames[1]) */
|
---|
1100 | )
|
---|
1101 | )
|
---|
1102 | {
|
---|
1103 | rc = DBGFR3MemRead(pUVM, 0 /*idCpu*/,
|
---|
1104 | DBGFR3AddrFromFlat(pUVM, &Addr, uMte2.v64.InLoadOrderLinks.Blink),
|
---|
1105 | &uMte3.v64, RT_SIZEOFMEMB(NTMTE64, InLoadOrderLinks));
|
---|
1106 | if ( RT_SUCCESS(rc)
|
---|
1107 | && uMte3.v64.InLoadOrderLinks.Flink == MteAddr.FlatPtr
|
---|
1108 | && WINNT64_VALID_ADDRESS(uMte3.v64.InLoadOrderLinks.Blink) )
|
---|
1109 | {
|
---|
1110 | Log(("DigWinNt: MteAddr=%RGv KernelAddr=%RGv SizeOfImage=%x &PsLoadedModuleList=%RGv (32-bit)\n",
|
---|
1111 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, Addr.FlatPtr));
|
---|
1112 | pThis->KernelAddr = KernelAddr;
|
---|
1113 | pThis->KernelMteAddr = MteAddr;
|
---|
1114 | pThis->PsLoadedModuleListAddr = Addr;
|
---|
1115 | pThis->f32Bit = false;
|
---|
1116 | return true;
|
---|
1117 | }
|
---|
1118 | }
|
---|
1119 | else if (RT_SUCCESS(rc))
|
---|
1120 | {
|
---|
1121 | Log2(("DigWinNt: Wrong module: MteAddr=%RGv ImageAddr=%RGv SizeOfImage=%#x '%ls'\n",
|
---|
1122 | MteAddr.FlatPtr, KernelAddr.FlatPtr, uMte2.v64.SizeOfImage, u.wsz));
|
---|
1123 | break; /* Not NT kernel */
|
---|
1124 | }
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 | /* next */
|
---|
1128 | DBGFR3AddrAdd(&HitAddr, 8);
|
---|
1129 | if (HitAddr.FlatPtr < uEnd)
|
---|
1130 | rc = DBGFR3MemScan(pUVM, 0 /*idCpu*/, &HitAddr, uEnd - HitAddr.FlatPtr,
|
---|
1131 | 8 /*align*/, &uMte.v64.DllBase, 3 * sizeof(uint32_t), &HitAddr);
|
---|
1132 | else
|
---|
1133 | rc = VERR_DBGF_MEM_NOT_FOUND;
|
---|
1134 | }
|
---|
1135 | }
|
---|
1136 | }
|
---|
1137 | }
|
---|
1138 | }
|
---|
1139 | return false;
|
---|
1140 | }
|
---|
1141 |
|
---|
1142 |
|
---|
1143 | /**
|
---|
1144 | * @copydoc DBGFOSREG::pfnDestruct
|
---|
1145 | */
|
---|
1146 | static DECLCALLBACK(void) dbgDiggerWinNtDestruct(PUVM pUVM, void *pvData)
|
---|
1147 | {
|
---|
1148 |
|
---|
1149 | }
|
---|
1150 |
|
---|
1151 |
|
---|
1152 | /**
|
---|
1153 | * @copydoc DBGFOSREG::pfnConstruct
|
---|
1154 | */
|
---|
1155 | static DECLCALLBACK(int) dbgDiggerWinNtConstruct(PUVM pUVM, void *pvData)
|
---|
1156 | {
|
---|
1157 | PDBGDIGGERWINNT pThis = (PDBGDIGGERWINNT)pvData;
|
---|
1158 | pThis->fValid = false;
|
---|
1159 | pThis->f32Bit = false;
|
---|
1160 | pThis->enmVer = DBGDIGGERWINNTVER_UNKNOWN;
|
---|
1161 | return VINF_SUCCESS;
|
---|
1162 | }
|
---|
1163 |
|
---|
1164 |
|
---|
1165 | const DBGFOSREG g_DBGDiggerWinNt =
|
---|
1166 | {
|
---|
1167 | /* .u32Magic = */ DBGFOSREG_MAGIC,
|
---|
1168 | /* .fFlags = */ 0,
|
---|
1169 | /* .cbData = */ sizeof(DBGDIGGERWINNT),
|
---|
1170 | /* .szName = */ "WinNT",
|
---|
1171 | /* .pfnConstruct = */ dbgDiggerWinNtConstruct,
|
---|
1172 | /* .pfnDestruct = */ dbgDiggerWinNtDestruct,
|
---|
1173 | /* .pfnProbe = */ dbgDiggerWinNtProbe,
|
---|
1174 | /* .pfnInit = */ dbgDiggerWinNtInit,
|
---|
1175 | /* .pfnRefresh = */ dbgDiggerWinNtRefresh,
|
---|
1176 | /* .pfnTerm = */ dbgDiggerWinNtTerm,
|
---|
1177 | /* .pfnQueryVersion = */ dbgDiggerWinNtQueryVersion,
|
---|
1178 | /* .pfnQueryInterface = */ dbgDiggerWinNtQueryInterface,
|
---|
1179 | /* .u32EndMagic = */ DBGFOSREG_MAGIC
|
---|
1180 | };
|
---|
1181 |
|
---|