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[未解决，已结帖] [求助][求助][求助]内存加载 疑似TLS问题 100.00雪花
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发表于: 2022-5-31 03:01
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内存加载DLL出现Runtime Error,调试发现错误在下面的:
79301E1C | A1 04A63379 | mov eax,dword ptr ds:[<brock>] | bedrock_windows.cpp:772
79301E21 | 56 | push esi | bedrock_windows.cpp:773
79301E22 | 8B00 | mov eax,dword ptr ds:[eax] | bedrock_windows.cpp:772 此处eax=0,导致的内存访问异常
怀疑是TLS问题，百度找到了上面的tls回调的修复，但实际运行while (*callback) 判断没通过，因为是没有回调函数，可能是TLS变量没修复，但网上找半天没找到相关的资料，请求大佬解惑
因为DLL使用了nana gui库出现的问题,内存加载的shellcode经过测试可正常加载C++一般DLL和MFC DLL。
ShellCode:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 | #pragma oncetypedef HMODULE(WINAPI* _LoadLibraryA)( IN const char* lpModulName );typedef LONG(WINAPI* _GetProcAddress)( IN HMODULE dwModul, IN const char* lpProcName );typedef LONG(NTAPI* _ZwAllocateVirtualMemory)( _In_ HANDLE ProcessHandle, _Inout_ PVOID BaseAddress, _In_ ULONG_PTR ZeroBits, _Inout_ PSIZE_T RegionSize, _In_ ULONG AllocationType, _In_ ULONG Protect );typedef LONG(WINAPI* _DllMain)( HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved );typedef LONG(WINAPI* _GetModuleFileName)( HMODULE hModule, void* lpFileName, size_t nSize );typedef LONG(WINAPI* _MessageBoxA)( _In_opt_ HWND hWnd, _In_opt_ char* lpText, _In_opt_ char* lpCaption, _In_ UINT uType);typedef struct _MemLoadInfo{ DWORD LoadBase; // DLL基址 _LoadLibraryA api_LoadLibraryA; // 必须项 _GetProcAddress api_GetProcAddress; // 必须项 _ZwAllocateVirtualMemory api_ZwAllocateVirtualMemory; // 必须项 _GetModuleFileName api_GetModuleFileNameA; // 可选项 _GetModuleFileName api_GetModuleFileNameW; // 可选项 _MessageBoxA api_MessageBoxA; // 可选项}MemLoadInfo;__declspec(safebuffers) int WINAPI MemLoad(MemLoadInfo* pMemLoad){ if (pMemLoad == 0) return 1; if (pMemLoad->LoadBase == 0 || pMemLoad->api_LoadLibraryA == 0 || pMemLoad->api_GetProcAddress == 0 || pMemLoad->api_ZwAllocateVirtualMemory == 0) return 2; IMAGE_DOS_HEADER* pDosHeader; IMAGE_NT_HEADERS* pNtHeader; IMAGE_SECTION_HEADER* pSectionHeader; pDosHeader = (IMAGE_DOS_HEADER*)pMemLoad->LoadBase; if (pDosHeader == 0) return 3; if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) return 4; pNtHeader = (IMAGE_NT_HEADERS*)(pMemLoad->LoadBase + pDosHeader->e_lfanew); if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) return 5; if (pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress == 0 || pNtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress == 0) return 6; DWORD InitBase = 0; DWORD* Proc_GetModulFileNameA = 0; DWORD* Proc_GetModulFileNameW = 0; DWORD Size_GetModulFileNameA = 0x100; DWORD Size_GetModulFileNameW = 0x100; pMemLoad->api_ZwAllocateVirtualMemory((HANDLE)-1, &InitBase, NULL, &pNtHeader->OptionalHeader.SizeOfImage, MEM_COMMIT, PAGE_EXECUTE_READWRITE); // 分配一段 GetModulFileName的回调代码 if (pMemLoad->api_GetModuleFileNameA) { pMemLoad->api_ZwAllocateVirtualMemory((HANDLE)-1, &Proc_GetModulFileNameA, NULL, &Size_GetModulFileNameA, MEM_COMMIT, PAGE_EXECUTE_READWRITE); if (Proc_GetModulFileNameA == 0) return 7; Proc_GetModulFileNameA[0] = 0x8BEC8B55; Proc_GetModulFileNameA[1] = 0x003D0845; Proc_GetModulFileNameA[2] = 0x75004010; Proc_GetModulFileNameA[3] = 0x0C458B1D; Proc_GetModulFileNameA[4] = 0x3A4300C7; Proc_GetModulFileNameA[5] = 0x40C7315C; Proc_GetModulFileNameA[6] = 0x6C642E04; Proc_GetModulFileNameA[7] = 0x0840C66C; Proc_GetModulFileNameA[8] = 0x0008B800; Proc_GetModulFileNameA[9] = 0xC25D0000; Proc_GetModulFileNameA[10] = 0x4589000C; Proc_GetModulFileNameA[11] = 0x1000B808; Proc_GetModulFileNameA[12] = 0xFF5D0040; Proc_GetModulFileNameA[13] = 0xCCCCCCE0; *(DWORD*)((DWORD)Proc_GetModulFileNameA + 7) = InitBase; *(DWORD*)((DWORD)Proc_GetModulFileNameA + 46) = (DWORD)pMemLoad->api_GetModuleFileNameA; } if (pMemLoad->api_GetModuleFileNameW) { pMemLoad->api_ZwAllocateVirtualMemory((HANDLE)-1, &Proc_GetModulFileNameW, NULL, &Size_GetModulFileNameW, MEM_COMMIT, PAGE_EXECUTE_READWRITE); if (Proc_GetModulFileNameW == 0) return 7; Proc_GetModulFileNameW[0] = 0x8BEC8B55; Proc_GetModulFileNameW[1] = 0x003D0845; Proc_GetModulFileNameW[2] = 0x75004010; Proc_GetModulFileNameW[3] = 0x0C458B2D; Proc_GetModulFileNameW[4] = 0x00C7C933; Proc_GetModulFileNameW[5] = 0x003A0043; Proc_GetModulFileNameW[6] = 0x5C0440C7; Proc_GetModulFileNameW[7] = 0xC7003100; Proc_GetModulFileNameW[8] = 0x002E0840; Proc_GetModulFileNameW[9] = 0x40C70064; Proc_GetModulFileNameW[10] = 0x6C006C0C; Proc_GetModulFileNameW[11] = 0x48896600; Proc_GetModulFileNameW[12] = 0x0008B810; Proc_GetModulFileNameW[13] = 0xC25D0000; Proc_GetModulFileNameW[14] = 0x4589000C; Proc_GetModulFileNameW[15] = 0x1000B808; Proc_GetModulFileNameW[16] = 0xFF5D0040; Proc_GetModulFileNameW[17] = 0xCCCCCCE0; *(DWORD*)((DWORD)Proc_GetModulFileNameW + 7) = InitBase; *(DWORD*)((DWORD)Proc_GetModulFileNameW + 62) = (DWORD)pMemLoad->api_GetModuleFileNameW; } if (InitBase == 0) return 7; // 复制头和节表 for (size_t i = 0; i < pNtHeader->OptionalHeader.SizeOfHeaders; i++) *(byte*)(InitBase + i) = *(byte*)(pMemLoad->LoadBase + i); pSectionHeader = (IMAGE_SECTION_HEADER*)(pMemLoad->LoadBase + pDosHeader->e_lfanew + 248); // 复制区段 for (size_t i = 0; i < pNtHeader->FileHeader.NumberOfSections; i++) { for (size_t x = 0; x < pSectionHeader[i].SizeOfRawData; x++) *(byte*)(InitBase + pSectionHeader[i].VirtualAddress + x) = *(byte*)(pMemLoad->LoadBase + pSectionHeader[i].PointerToRawData + x); } // 修复IAT PIMAGE_DATA_DIRECTORY pDataDirectory; pDataDirectory = pNtHeader->OptionalHeader.DataDirectory; if (pDataDirectory[1].Size > 0) { //获取导入表地址 PIMAGE_IMPORT_DESCRIPTOR ImportAddr = PIMAGE_IMPORT_DESCRIPTOR(pDataDirectory[1].VirtualAddress + InitBase); for (; ImportAddr->Name; ++ImportAddr) { DWORD* thunkRef; FARPROC* funcRef; HMODULE hModule = pMemLoad->api_LoadLibraryA((char*)(InitBase + ImportAddr->Name)); if (ImportAddr->OriginalFirstThunk) { thunkRef = (DWORD*)(InitBase + ImportAddr->OriginalFirstThunk); funcRef = (FARPROC*)(InitBase + ImportAddr->FirstThunk); } else { //no hint table thunkRef = (DWORD*)(InitBase + ImportAddr->FirstThunk); funcRef = (FARPROC*)(InitBase + ImportAddr->FirstThunk); } for (; *thunkRef; ++thunkRef, ++funcRef) { if (IMAGE_SNAP_BY_ORDINAL(*thunkRef)) { *funcRef = (FARPROC)pMemLoad->api_GetProcAddress(hModule, (LPCSTR)IMAGE_ORDINAL(*thunkRef)); } else { PIMAGE_IMPORT_BY_NAME pFuncName = (PIMAGE_IMPORT_BY_NAME)(*thunkRef + InitBase); *funcRef = (FARPROC)pMemLoad->api_GetProcAddress(hModule, (LPCSTR)&pFuncName->Name); if (pMemLoad->api_GetModuleFileNameA) { if (*(DWORD*)pFuncName->Name == 0x4D746547 && *(DWORD*)(pFuncName->Name + 4) == 0x6C75646F && *(DWORD*)(pFuncName->Name + 8) == 0x6C694665 && *(DWORD*)(pFuncName->Name + 12) == 0x6D614E65 && *(WORD*)(pFuncName->Name + 16) == 0x4165) { *funcRef = (FARPROC)Proc_GetModulFileNameA; } } if (pMemLoad->api_GetModuleFileNameW) { if (*(DWORD*)pFuncName->Name == 0x4D746547 && *(DWORD*)(pFuncName->Name + 4) == 0x6C75646F && *(DWORD*)(pFuncName->Name + 8) == 0x6C694665 && *(DWORD*)(pFuncName->Name + 12) == 0x6D614E65 && *(WORD*)(pFuncName->Name + 16) == 0x5765) { *funcRef = (FARPROC)Proc_GetModulFileNameW; } } } if (*funcRef == 0 && pMemLoad->api_MessageBoxA) { pMemLoad->api_MessageBoxA(NULL, (char*)(InitBase + ImportAddr->Name), ((PIMAGE_IMPORT_BY_NAME)(*thunkRef + InitBase))->Name, MB_ICONASTERISK); } } } } // 修复重定位 DWORD Value = InitBase - pNtHeader->OptionalHeader.ImageBase; if (pDataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size > 0) { PIMAGE_BASE_RELOCATION relocation = (PIMAGE_BASE_RELOCATION)((DWORD)InitBase + pDataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress); while (relocation->VirtualAddress > 0) { BYTE* dest = (PBYTE)((DWORD)InitBase + relocation->VirtualAddress); WORD* relInfo = (PWORD)((DWORD)relocation + sizeof(IMAGE_BASE_RELOCATION)); for (int i = 0; i < ((relocation->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) / 2); ++i, ++relInfo) { DWORD* patchAddrHL; int type, offset; //the upper 4 bits define the type of relocation type = *relInfo >> 12; //the lower 12 bits define the offset offset = *relInfo & 0xFFF; switch (type) { case IMAGE_REL_BASED_ABSOLUTE: //skip relocation break; case IMAGE_REL_BASED_HIGHLOW: //change comlete 32 bit address patchAddrHL = (PDWORD)(dest + offset); *patchAddrHL += Value; break; default: break; } } //advance to next relocation block relocation = PIMAGE_BASE_RELOCATION((DWORD)relocation + relocation->SizeOfBlock); } } // 线程TLS回调处理 unsigned char* codeBase = (unsigned char*)InitBase; PIMAGE_TLS_DIRECTORY tls; PIMAGE_TLS_CALLBACK* callback; tls = (PIMAGE_TLS_DIRECTORY)((DWORD)InitBase + pDataDirectory[IMAGE_DIRECTORY_ENTRY_TLS].VirtualAddress); //tls = (PIMAGE_TLS_DIRECTORY)(codeBase + directory->VirtualAddress); callback = (PIMAGE_TLS_CALLBACK*)tls->AddressOfCallBacks; if (callback) { while (*callback) { (*callback)((LPVOID)codeBase, DLL_PROCESS_ATTACH, NULL); callback++; } } // 运行 ((_DllMain)(InitBase + pNtHeader->OptionalHeader.AddressOfEntryPoint))((HMODULE)InitBase, DLL_PROCESS_ATTACH, NULL); return 0;} |
DLL链接：https://wwb.lanzouw.com/ijop005o4udc
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最后于 2022-6-27 13:55
被大佬求关照编辑
，原因：
