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MemoryModulePP.c
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1438 lines (1245 loc) · 42.8 KB
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/*
* modify by xjun
*/
/*
WIN7 x86 and x64 (Build 7601)
int __stdcall RtlInsertInvertedFunctionTable(PVOID Pointer, PVOID BaseAddress, ULONG uImageSize)
Pointer == LdrpInvertedFunctionTable;
89 48 04 89 01 A3 ?? ?? ?? ?? FF 76 20
.text:7DEBA8E6 89 48 04 mov [eax+4], ecx
.text:7DEBA8E9 89 01 mov [ecx], eax
.text:7DEBA8EB A3 18 02 F7 7D mov dword_7DF70218, eax
.text:7DEBA8F0 FF 76 20 push dword ptr [esi+20h] ; int
.text:7DEBA8F3 FF 76 18 push dword ptr [esi+18h] ; BaseAddress
.text:7DEBA8F6 68 00 22 F7 7D push offset _LdrpInvertedFunctionTable ; Pointer
.text:7DEBA8FB E8 B2 5B FF FF call _RtlInsertInvertedFunctionTable@12 ; RtlInsertInvertedFunctionTable(x,x,x)
/////////////////////////////////////////////////////////////////////////////////////////////////////////
WIN8 x86 and x64 (Build 9600)
int __fastcall RtlInsertInvertedFunctionTable(PVOID BaseAddress, ULONG uImageSize)
33 FF 8B 56 20 8B CB E8
.text:6B2D7980 33 FF xor edi, edi
.text:6B2D7982
.text:6B2D7982 loc_6B2D7982: ; CODE XREF: LdrpProcessMappedModule(x,x)+160¡üj
.text:6B2D7982 ; LdrpProcessMappedModule(x,x)+169¡üj ...
.text:6B2D7982 8B 56 20 mov edx, [esi+20h] ; uImageSize
.text:6B2D7985 8B CB mov ecx, ebx ; BaseAddress
.text:6B2D7987 E8 45 0A 00 00 call _RtlInsertInvertedFunctionTable@8 ; RtlInsertInvertedFunctionTable(x,x)
/////////////////////////////////////////////////////////////////////////////////////////////////////////
WIN10 x86 and x64 (Build 17763)
int __fastcall RtlInsertInvertedFunctionTable(PVOID BaseAddress, ULONG uImageSize)
8B 45 FC 8B CF 8B 70 50 8B D6 E8
.text:4B32F593 8B 45 FC mov eax, [ebp+var_4]
.text:4B32F596 8B CF mov ecx, edi
.text:4B32F598 8B 70 50 mov esi, [eax+50h]
.text:4B32F59B 8B D6 mov edx, esi
.text:4B32F59D E8 38 8D F8 FF call _RtlInsertInvertedFunctionTable@8 ; RtlInsertInvertedFunctionTable(x,x)
WIN10 x86 and x64 (Build 16299)
int __fastcall RtlInsertInvertedFunctionTable(PVOID BaseAddress, ULONG uImageSize)
8B 85 D4 FE FF FF 8B 70 50 8B D6 8B CB E8
.text:4B327344 8B 85 D4 FE FF FF mov eax, [ebp+var_12C]
.text:4B32734A 8B 70 50 mov esi, [eax+50h]
.text:4B32734D 8B D6 mov edx, esi
.text:4B32734F 8B CB mov ecx, ebx
.text:4B327351 E8 42 7A FB FF call _RtlInsertInvertedFunctionTable@8 ; RtlInsertInvertedFunctionTable(x,x)
WIN10 x86 and x64 (Build 15036)
int __fastcall RtlInsertInvertedFunctionTable(PVOID BaseAddress, ULONG uImageSize)
8B 45 F8 8B CE 8B 40 50 8B D0 89 45 F0 E8
.text:4B32DFEC 8B 45 F8 mov eax, [ebp+var_8]
.text:4B32DFEF 8B CE mov ecx, esi
.text:4B32DFF1 8B 40 50 mov eax, [eax+50h]
.text:4B32DFF4 8B D0 mov edx, eax
.text:4B32DFF6 89 45 F0 mov [ebp+var_10], eax
.text:4B32DFF9 E8 3E 2E FA FF call _RtlInsertInvertedFunctionTable@8 ; RtlInsertInvertedFunctionTable(x,x)
WIN10 x86 and x64 (Build 10240)
int __fastcall RtlInsertInvertedFunctionTable(PVOID BaseAddress, ULONG uImageSize)
8B 85 ?? FF FF FF 8B 70 50 8B D6 8B 8D ?? FF FF FF E8
.text:4B31E0CB 8B 85 18 FF FF FF mov eax, [ebp+var_E8]
.text:4B31E0D1 8B 70 50 mov esi, [eax+50h]
.text:4B31E0D4 8B D6 mov edx, esi
.text:4B31E0D6 8B 8D 34 FF FF FF mov ecx, [ebp+BaseAddress]
.text:4B31E0DC E8 E9 50 F9 FF call _RtlInsertInvertedFunctionTable@8 ; RtlInsertInvertedFunctionTable(x,x)
*/
#include <windows.h>
#include <winnt.h>
#include <stddef.h>
#include <tchar.h>
#include <ImageHlp.h>
#ifdef DEBUG_OUTPUT
#include <stdio.h>
#endif
#if _MSC_VER
// Disable warning about data -> function pointer conversion
#pragma warning(disable:4055)
// C4244: conversion from 'uintptr_t' to 'DWORD', possible loss of data.
#pragma warning(error: 4244)
// C4267: conversion from 'size_t' to 'int', possible loss of data.
#pragma warning(error: 4267)
#define inline __inline
#endif
#ifndef IMAGE_SIZEOF_BASE_RELOCATION
// Vista SDKs no longer define IMAGE_SIZEOF_BASE_RELOCATION!?
#define IMAGE_SIZEOF_BASE_RELOCATION (sizeof(IMAGE_BASE_RELOCATION))
#endif
#ifdef _WIN64
#define HOST_MACHINE IMAGE_FILE_MACHINE_AMD64
#else
#define HOST_MACHINE IMAGE_FILE_MACHINE_I386
#endif
#include "MemoryModulePP.h"
ULONG dwMajorVersion = 0;
ULONG dwMinorVersion = 0;
ULONG dwBuildNumber = 0;
PVOID LdrpInvertedFunctionTable = NULL;
typedef int(__stdcall* fnRtlInsertInvertedFunctionTable_Win7)(PVOID Pointer, PVOID BaseAddress, ULONG uImageSize);
fnRtlInsertInvertedFunctionTable_Win7 pfnRtlInsertInvertedFunctionTable_Win7 = NULL;
typedef int(__fastcall* fnRtlInsertInvertedFunctionTable_Win8_Win10)(PVOID BaseAddress, ULONG uImageSize);
fnRtlInsertInvertedFunctionTable_Win8_Win10 pfnRtlInsertInvertedFunctionTable_Win8_Win10 = NULL;
typedef BOOLEAN(__cdecl* fnRtlAddFunctionTable64)(PVOID FunctionTable, DWORD EntryCount, DWORD64 BaseAddress);
fnRtlAddFunctionTable64 pfnRtlAddFunctionTable64 = NULL;
static inline LONG
FindPattern(unsigned char* pSrc, unsigned char* pTrait, int nSrcLen, int nTraitLen)
{
if (IsBadReadPtr(pSrc, sizeof(void*)) == TRUE)
{
return -1;
}
int i, j, k;
for (i = 0; i <= (nSrcLen - nTraitLen); i++)
{
if (pSrc[i] == pTrait[0])
{
k = i;
j = 0;
while (j < nTraitLen)
{
k++; j++;
if (pTrait[j] == 0x90)
{
continue;
}
if (pSrc[k] != pTrait[j])
{
break;
}
}
if (j == nTraitLen)
{
return i;
}
}
}
return -1;
}
static inline uintptr_t
AlignValueDown(uintptr_t value, uintptr_t alignment) {
return value & ~(alignment - 1);
}
static inline LPVOID
AlignAddressDown(LPVOID address, uintptr_t alignment) {
return (LPVOID)AlignValueDown((uintptr_t)address, alignment);
}
static inline size_t
AlignValueUp(size_t value, size_t alignment) {
return (value + alignment - 1) & ~(alignment - 1);
}
static inline void*
OffsetPointer(void* data, ptrdiff_t offset) {
return (void*)((uintptr_t)data + offset);
}
static inline void
OutputLastError(const char *msg)
{
#ifndef DEBUG_OUTPUT
UNREFERENCED_PARAMETER(msg);
#else
LPVOID tmp;
char *tmpmsg;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&tmp, 0, NULL);
tmpmsg = (char *)LocalAlloc(LPTR, strlen(msg) + strlen(tmp) + 3);
sprintf(tmpmsg, "%s: %s", msg, tmp);
OutputDebugString(tmpmsg);
LocalFree(tmpmsg);
LocalFree(tmp);
#endif
}
static BOOL
CheckSize(size_t size, size_t expected) {
if (size < expected) {
SetLastError(ERROR_INVALID_DATA);
return FALSE;
}
return TRUE;
}
static BOOL
CopySections(const unsigned char *data, size_t size, PIMAGE_NT_HEADERS old_headers, PMEMORYMODULE module)
{
int i, section_size;
unsigned char *codeBase = module->codeBase;
unsigned char *dest;
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(module->headers);
for (i = 0; i < module->headers->FileHeader.NumberOfSections; i++, section++) {
if (section->SizeOfRawData == 0) {
// section doesn't contain data in the dll itself, but may define
// uninitialized data
section_size = old_headers->OptionalHeader.SectionAlignment;
if (section_size > 0) {
dest = (unsigned char *)module->alloc(codeBase + section->VirtualAddress,
section_size,
MEM_COMMIT,
PAGE_READWRITE,
module->userdata);
if (dest == NULL) {
return FALSE;
}
// Always use position from file to support alignments smaller
// than page size (allocation above will align to page size).
dest = codeBase + section->VirtualAddress;
// NOTE: On 64bit systems we truncate to 32bit here but expand
// again later when "PhysicalAddress" is used.
section->Misc.PhysicalAddress = (DWORD)((uintptr_t)dest & 0xffffffff);
memset(dest, 0, section_size);
}
// section is empty
continue;
}
if (!CheckSize(size, section->PointerToRawData + section->SizeOfRawData)) {
return FALSE;
}
// commit memory block and copy data from dll
dest = (unsigned char *)module->alloc(codeBase + section->VirtualAddress,
section->SizeOfRawData,
MEM_COMMIT,
PAGE_READWRITE,
module->userdata);
if (dest == NULL) {
return FALSE;
}
// Always use position from file to support alignments smaller
// than page size (allocation above will align to page size).
dest = codeBase + section->VirtualAddress;
memcpy(dest, data + section->PointerToRawData, section->SizeOfRawData);
// NOTE: On 64bit systems we truncate to 32bit here but expand
// again later when "PhysicalAddress" is used.
section->Misc.PhysicalAddress = (DWORD)((uintptr_t)dest & 0xffffffff);
}
return TRUE;
}
// Protection flags for memory pages (Executable, Readable, Writeable)
static int ProtectionFlags[2][2][2] = {
{
// not executable
{ PAGE_NOACCESS, PAGE_WRITECOPY },
{ PAGE_READONLY, PAGE_READWRITE },
}, {
// executable
{ PAGE_EXECUTE, PAGE_EXECUTE_WRITECOPY },
{ PAGE_EXECUTE_READ, PAGE_EXECUTE_READWRITE },
},
};
static SIZE_T
GetRealSectionSize(PMEMORYMODULE module, PIMAGE_SECTION_HEADER section) {
DWORD size = section->SizeOfRawData;
if (size == 0) {
if (section->Characteristics & IMAGE_SCN_CNT_INITIALIZED_DATA) {
size = module->headers->OptionalHeader.SizeOfInitializedData;
}
else if (section->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA) {
size = module->headers->OptionalHeader.SizeOfUninitializedData;
}
}
return (SIZE_T)size;
}
static BOOL
FinalizeSection(PMEMORYMODULE module, PSECTIONFINALIZEDATA sectionData) {
DWORD protect, oldProtect;
BOOL executable;
BOOL readable;
BOOL writeable;
if (sectionData->size == 0) {
return TRUE;
}
if (sectionData->characteristics & IMAGE_SCN_MEM_DISCARDABLE) {
// section is not needed any more and can safely be freed
if (sectionData->address == sectionData->alignedAddress &&
(sectionData->last ||
module->headers->OptionalHeader.SectionAlignment == module->pageSize ||
(sectionData->size % module->pageSize) == 0)
) {
// Only allowed to decommit whole pages
module->free(sectionData->address, sectionData->size, MEM_DECOMMIT, module->userdata);
}
return TRUE;
}
// determine protection flags based on characteristics
executable = (sectionData->characteristics & IMAGE_SCN_MEM_EXECUTE) != 0;
readable = (sectionData->characteristics & IMAGE_SCN_MEM_READ) != 0;
writeable = (sectionData->characteristics & IMAGE_SCN_MEM_WRITE) != 0;
protect = ProtectionFlags[executable][readable][writeable];
if (sectionData->characteristics & IMAGE_SCN_MEM_NOT_CACHED) {
protect |= PAGE_NOCACHE;
}
// change memory access flags
if (VirtualProtect(sectionData->address, sectionData->size, protect, &oldProtect) == 0) {
OutputLastError("Error protecting memory page");
return FALSE;
}
return TRUE;
}
static BOOL
FinalizeSections(PMEMORYMODULE module)
{
int i;
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(module->headers);
#ifdef _WIN64
// "PhysicalAddress" might have been truncated to 32bit above, expand to
// 64bits again.
uintptr_t imageOffset = ((uintptr_t)module->headers->OptionalHeader.ImageBase & 0xffffffff00000000);
#else
static const uintptr_t imageOffset = 0;
#endif
SECTIONFINALIZEDATA sectionData;
sectionData.address = (LPVOID)((uintptr_t)section->Misc.PhysicalAddress | imageOffset);
sectionData.alignedAddress = AlignAddressDown(sectionData.address, module->pageSize);
sectionData.size = GetRealSectionSize(module, section);
sectionData.characteristics = section->Characteristics;
sectionData.last = FALSE;
section++;
// loop through all sections and change access flags
for (i = 1; i<module->headers->FileHeader.NumberOfSections; i++, section++) {
LPVOID sectionAddress = (LPVOID)((uintptr_t)section->Misc.PhysicalAddress | imageOffset);
LPVOID alignedAddress = AlignAddressDown(sectionAddress, module->pageSize);
SIZE_T sectionSize = GetRealSectionSize(module, section);
// Combine access flags of all sections that share a page
// TODO(fancycode): We currently share flags of a trailing large section
// with the page of a first small section. This should be optimized.
if (sectionData.alignedAddress == alignedAddress || (uintptr_t)sectionData.address + sectionData.size >(uintptr_t) alignedAddress) {
// Section shares page with previous
if ((section->Characteristics & IMAGE_SCN_MEM_DISCARDABLE) == 0 || (sectionData.characteristics & IMAGE_SCN_MEM_DISCARDABLE) == 0) {
sectionData.characteristics = (sectionData.characteristics | section->Characteristics) & ~IMAGE_SCN_MEM_DISCARDABLE;
}
else {
sectionData.characteristics |= section->Characteristics;
}
sectionData.size = (((uintptr_t)sectionAddress) + ((uintptr_t)sectionSize)) - (uintptr_t)sectionData.address;
continue;
}
if (!FinalizeSection(module, §ionData)) {
return FALSE;
}
sectionData.address = sectionAddress;
sectionData.alignedAddress = alignedAddress;
sectionData.size = sectionSize;
sectionData.characteristics = section->Characteristics;
}
sectionData.last = TRUE;
if (!FinalizeSection(module, §ionData)) {
return FALSE;
}
return TRUE;
}
static BOOL
ExecuteTLS(PMEMORYMODULE module)
{
unsigned char *codeBase = module->codeBase;
PIMAGE_TLS_DIRECTORY tls;
PIMAGE_TLS_CALLBACK* callback;
PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_TLS);
if (directory->VirtualAddress == 0) {
return TRUE;
}
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++;
}
}
return TRUE;
}
static BOOL
PerformBaseRelocation(PMEMORYMODULE module, ptrdiff_t delta)
{
unsigned char *codeBase = module->codeBase;
PIMAGE_BASE_RELOCATION relocation;
PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_BASERELOC);
if (directory->Size == 0) {
return (delta == 0);
}
relocation = (PIMAGE_BASE_RELOCATION)(codeBase + directory->VirtualAddress);
for (; relocation->VirtualAddress > 0;) {
DWORD i;
unsigned char *dest = codeBase + relocation->VirtualAddress;
unsigned short *relInfo = (unsigned short*)OffsetPointer(relocation, IMAGE_SIZEOF_BASE_RELOCATION);
for (i = 0; i < ((relocation->SizeOfBlock - IMAGE_SIZEOF_BASE_RELOCATION) / 2); i++, relInfo++) {
// the upper 4 bits define the type of relocation
int type = *relInfo >> 12;
// the lower 12 bits define the offset
int offset = *relInfo & 0xfff;
switch (type)
{
case IMAGE_REL_BASED_ABSOLUTE:
// skip relocation
break;
case IMAGE_REL_BASED_HIGHLOW:
// change complete 32 bit address
{
DWORD *patchAddrHL = (DWORD *)(dest + offset);
*patchAddrHL += (DWORD)delta;
}
break;
#ifdef _WIN64
case IMAGE_REL_BASED_DIR64:
{
ULONGLONG *patchAddr64 = (ULONGLONG *) (dest + offset);
*patchAddr64 += (ULONGLONG) delta;
}
break;
#endif
default:
//printf("Unknown relocation: %d\n", type);
break;
}
}
// advance to next relocation block
relocation = (PIMAGE_BASE_RELOCATION)OffsetPointer(relocation, relocation->SizeOfBlock);
}
return TRUE;
}
static BOOL
BuildImportTable(PMEMORYMODULE module)
{
unsigned char *codeBase = module->codeBase;
PIMAGE_IMPORT_DESCRIPTOR importDesc;
BOOL result = TRUE;
PIMAGE_DATA_DIRECTORY directory = GET_HEADER_DICTIONARY(module, IMAGE_DIRECTORY_ENTRY_IMPORT);
if (directory->Size == 0) {
return TRUE;
}
importDesc = (PIMAGE_IMPORT_DESCRIPTOR)(codeBase + directory->VirtualAddress);
for (; !IsBadReadPtr(importDesc, sizeof(IMAGE_IMPORT_DESCRIPTOR)) && importDesc->Name; importDesc++) {
uintptr_t *thunkRef;
FARPROC *funcRef;
HCUSTOMMODULE *tmp;
HCUSTOMMODULE handle = module->loadLibrary((LPCSTR)(codeBase + importDesc->Name), module->userdata);
if (handle == NULL) {
SetLastError(ERROR_MOD_NOT_FOUND);
result = FALSE;
break;
}
tmp = (HCUSTOMMODULE *)realloc(module->modules, (module->numModules + 1)*(sizeof(HCUSTOMMODULE)));
if (tmp == NULL) {
module->freeLibrary(handle, module->userdata);
SetLastError(ERROR_OUTOFMEMORY);
result = FALSE;
break;
}
module->modules = tmp;
module->modules[module->numModules++] = handle;
if (importDesc->OriginalFirstThunk) {
thunkRef = (uintptr_t *)(codeBase + i
8B92
mportDesc->OriginalFirstThunk);
funcRef = (FARPROC *)(codeBase + importDesc->FirstThunk);
}
else {
// no hint table
thunkRef = (uintptr_t *)(codeBase + importDesc->FirstThunk);
funcRef = (FARPROC *)(codeBase + importDesc->FirstThunk);
}
for (; *thunkRef; thunkRef++, funcRef++) {
if (IMAGE_SNAP_BY_ORDINAL(*thunkRef)) {
*funcRef = module->getProcAddress(handle, (LPCSTR)IMAGE_ORDINAL(*thunkRef), module->userdata);
}
else {
PIMAGE_IMPORT_BY_NAME thunkData = (PIMAGE_IMPORT_BY_NAME)(codeBase + (*thunkRef));
*funcRef = module->getProcAddress(handle, (LPCSTR)&thunkData->Name, module->userdata);
}
if (*funcRef == 0) {
result = FALSE;
break;
}
}
if (!result) {
module->freeLibrary(handle, module->userdata);
SetLastError(ERROR_PROC_NOT_FOUND);
break;
}
}
return result;
}
static VOID
InsertExceptionTable(PMEMORYMODULE module)
{
#if defined(_WIN64)
PIMAGE_DATA_DIRECTORY pDataTable = \
&module->headers->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXCEPTION];
PIMAGE_RUNTIME_FUNCTION_ENTRY pFuncTable = \
(PIMAGE_RUNTIME_FUNCTION_ENTRY)((ULONG_PTR)module->codeBase + pDataTable->VirtualAddress);
if (pfnRtlAddFunctionTable64 != NULL)
{
pfnRtlAddFunctionTable64(pFuncTable, pDataTable->Size / sizeof(IMAGE_RUNTIME_FUNCTION_ENTRY), (DWORD64)module->codeBase);
}
#else
if (dwMajorVersion == 6 && dwMinorVersion == 1) //WIM7
{
if (pfnRtlInsertInvertedFunctionTable_Win7 != NULL);
{
pfnRtlInsertInvertedFunctionTable_Win7(LdrpInvertedFunctionTable, module->codeBase, module->headers->OptionalHeader.SizeOfImage);
}
}
else if (dwMajorVersion == 6 && dwMinorVersion == 3) //WIN8
{
if (pfnRtlInsertInvertedFunctionTable_Win8_Win10 != NULL);
{
pfnRtlInsertInvertedFunctionTable_Win8_Win10(module->codeBase, module->headers->OptionalHeader.SizeOfImage);
}
}
else if (dwMajorVersion == 10 && dwMinorVersion == 0) //WIN10
{
if (pfnRtlInsertInvertedFunctionTable_Win8_Win10 != NULL);
{
pfnRtlInsertInvertedFunctionTable_Win8_Win10(module->codeBase, module->headers->OptionalHeader.SizeOfImage);
}
}
else
{
// not support
}
#endif
}
static VOID
InitFindExceptPrivateFunc()
{
PVOID pNtdllCode;
ULONG uNtdllCodeSize;
PIMAGE_DOS_HEADER pDosHead;
PIMAGE_NT_HEADERS pNtHead;
PIMAGE_SECTION_HEADER pSection;
pDosHead = (PIMAGE_DOS_HEADER)GetModuleHandle(TEXT("ntdll"));
if (pDosHead->e_magic != IMAGE_DOS_SIGNATURE)
{
return;
}
pNtHead = (PIMAGE_NT_HEADERS)((ULONG_PTR)pDosHead + pDosHead->e_lfanew);
if (pNtHead->Signature != IMAGE_NT_SIGNATURE)
{
return;
}
pSection = IMAGE_FIRST_SECTION(pNtHead);
for (int i = 0; i < pNtHead->FileHeader.NumberOfSections; i++)
{
if (stricmp(pSection->Name, ".text") == 0 &&
(pSection->Characteristics & IMAGE_SCN_MEM_EXECUTE))
{
break;
}
pSection++;
}
pNtdllCode = (PVOID)((ULONG_PTR)pDosHead + pSection->VirtualAddress);
uNtdllCodeSize = pSection->SizeOfRawData;
if (dwMajorVersion == 6 && dwMinorVersion == 1) //WIM7
{
LONG lResult;
LONG lCallBuf;
unsigned char ida_chars[] = {
0x89, 0x48, 0x04, 0x89, 0x01, 0xA3, 0x90, 0x90, 0x90,
0x90, 0xFF, 0x76, 0x20
};
lResult = FindPattern(pNtdllCode, ida_chars, uNtdllCodeSize, sizeof(ida_chars));
if (lResult != -1)
{
LdrpInvertedFunctionTable = (PVOID)(*(LONG*)((ULONG_PTR)pNtdllCode + lResult + 0x11));
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + 0x16);
pfnRtlInsertInvertedFunctionTable_Win7 = \
(fnRtlInsertInvertedFunctionTable_Win7)((ULONG_PTR)pNtdllCode + lResult + 0x15 + 0x5 + lCallBuf);
}
}
else if (dwMajorVersion == 6 && dwMinorVersion == 3) //WIN8
{
LONG lResult;
LONG lCallBuf;
unsigned char ida_chars[] = {
0x33, 0xFF, 0x8B, 0x56, 0x20, 0x8B, 0xCB, 0xE8
};
lResult = FindPattern(pNtdllCode, ida_chars, uNtdllCodeSize, sizeof(ida_chars));
if (lResult != -1)
{
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + 0x8);
pfnRtlInsertInvertedFunctionTable_Win8_Win10 = \
(fnRtlInsertInvertedFunctionTable_Win8_Win10)((ULONG_PTR)pNtdllCode + lResult + 0x7 + 0x5 + lCallBuf);
}
}
else if (dwMajorVersion == 10 && dwMinorVersion == 0) //WIN10
{
LONG lResult;
LONG lCallBuf;
unsigned char ida_chars1[] = {
0x8B, 0x85, 0xD4, 0xFE, 0xFF, 0xFF, 0x8B, 0x70, 0x50,
0x8B, 0xD6, 0x8B, 0xCB, 0xE8
};
unsigned char ida_chars2[] = {
0x8B, 0x45, 0xF8, 0x8B, 0xCE, 0x8B, 0x40, 0x50, 0x8B,
0xD0, 0x89, 0x45, 0xF0, 0xE8
};
unsigned char ida_chars3[] = {
0x8B, 0x85, 0x90, 0xFF, 0xFF, 0xFF, 0x8B, 0x70, 0x50,
0x8B, 0xD6, 0x8B, 0x8D, 0x90, 0xFF, 0xFF, 0xFF, 0xE8
};
unsigned char ida_chars4[] = {
0x8B, 0x45, 0xFC, 0x8B, 0xCF, 0x8B, 0x70, 0x50, 0x8B,
0xD6, 0xE8
};
if ((lResult = FindPattern(pNtdllCode, ida_chars1, uNtdllCodeSize, sizeof(ida_chars1))) != -1)
{
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars1));
pfnRtlInsertInvertedFunctionTable_Win8_Win10 = \
(fnRtlInsertInvertedFunctionTable_Win8_Win10)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars1) - 1 + 0x5 + lCallBuf);
}
else if ((lResult = FindPattern(pNtdllCode, ida_chars2, uNtdllCodeSize, sizeof(ida_chars2))) != -1)
{
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars2));
pfnRtlInsertInvertedFunctionTable_Win8_Win10 = \
(fnRtlInsertInvertedFunctionTable_Win8_Win10)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars2) - 1 + 0x5 + lCallBuf);
}
else if ((lResult = FindPattern(pNtdllCode, ida_chars3, uNtdllCodeSize, sizeof(ida_chars3))) != -1)
{
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars3));
pfnRtlInsertInvertedFunctionTable_Win8_Win10 = \
(fnRtlInsertInvertedFunctionTable_Win8_Win10)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars3) - 1 + 0x5 + lCallBuf);
}
else if ((lResult = FindPattern(pNtdllCode, ida_chars4, uNtdllCodeSize, sizeof(ida_chars4))) != -1)
{
lCallBuf = *(LONG*)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars4));
pfnRtlInsertInvertedFunctionTable_Win8_Win10 = \
(fnRtlInsertInvertedFunctionTable_Win8_Win10)((ULONG_PTR)pNtdllCode + lResult + sizeof(ida_chars4) - 1 + 0x5 + lCallBuf);
}
else
{
#ifdef _DEBUG
__debugbreak();
#endif // DEBUG
// not support;
}
}
else
{
// not support
}
}
LPVOID MemoryDefaultAlloc(LPVOID address, SIZE_T size, DWORD allocationType, DWORD protect, void* userdata)
{
UNREFERENCED_PARAMETER(userdata);
return VirtualAlloc(address, size, allocationType, protect);
}
BOOL MemoryDefaultFree(LPVOID lpAddress, SIZE_T dwSize, DWORD dwFreeType, void* userdata)
{
UNREFERENCED_PARAMETER(userdata);
return VirtualFree(lpAddress, dwSize, dwFreeType);
}
HCUSTOMMODULE MemoryDefaultLoadLibrary(LPCSTR filename, void *userdata)
{
HMODULE result;
UNREFERENCED_PARAMETER(userdata);
result = LoadLibraryA(filename);
if (result == NULL) {
return NULL;
}
return (HCUSTOMMODULE)result;
}
FARPROC MemoryDefaultGetProcAddress(HCUSTOMMODULE module, LPCSTR name, void *userdata)
{
UNREFERENCED_PARAMETER(userdata);
return (FARPROC)GetProcAddress((HMODULE)module, name);
}
void MemoryDefaultFreeLibrary(HCUSTOMMODULE module, void *userdata)
{
UNREFERENCED_PARAMETER(userdata);
FreeLibrary((HMODULE)module);
}
PMEMORYMODULE MemoryLoadLibrary(const void *data, size_t size)
{
return MemoryLoadLibraryEx(data, size, MemoryDefaultAlloc, MemoryDefaultFree, MemoryDefaultLoadLibrary, MemoryDefaultGetProcAddress, MemoryDefaultFreeLibrary, NULL);
}
PMEMORYMODULE MemoryLoadLibraryEx(const void *data, size_t size,
CustomAllocFunc allocMemory,
CustomFreeFunc freeMemory,
CustomLoadLibraryFunc loadLibrary,
CustomGetProcAddressFunc getProcAddress,
CustomFreeLibraryFunc freeLibrary,
void *userdata)
{
PMEMORYMODULE result = NULL;
PIMAGE_DOS_HEADER dos_header;
PIMAGE_NT_HEADERS old_header;
unsigned char *code, *headers;
ptrdiff_t locationDelta;
SYSTEM_INFO sysInfo;
PIMAGE_SECTION_HEADER section;
DWORD i;
size_t optionalSectionSize;
size_t lastSectionEnd = 0;
size_t alignedImageSize;
static BOOL g_bInit = FALSE;
if (_InterlockedCompareExchange((LONG*)&g_bInit, TRUE, FALSE) == FALSE)
{
#if defined(_WIN64)
pfnRtlAddFunctionTable64 = (fnRtlAddFunctionTable64)GetProcAddress(GetModuleHandle(TEXT("ntdll")), "RtlAddFunctionTable");
#else
RTL_OSVERSIONINFOW osinfo = { 0 };
typedef LONG(__stdcall *fnRtlGetVersion)(PRTL_OSVERSIONINFOW lpVersionInformation);
fnRtlGetVersion pfnRtlGetVersion = (fnRtlGetVersion)GetProcAddress(GetModuleHandle(TEXT("ntdll.dll")), "RtlGetVersion");
if (pfnRtlGetVersion != NULL && pfnRtlGetVersion(&osinfo) == 0)
{
dwMajorVersion = osinfo.dwMajorVersion;
dwMinorVersion = osinfo.dwMinorVersion;
dwBuildNumber = osinfo.dwBuildNumber;
InitFindExceptPrivateFunc();
}
#endif
}
if (!CheckSize(size, sizeof(IMAGE_DOS_HEADER))) {
return NULL;
}
dos_header = (PIMAGE_DOS_HEADER)data;
if (dos_header->e_magic != IMAGE_DOS_SIGNATURE) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
if (!CheckSize(size, dos_header->e_lfanew + sizeof(IMAGE_NT_HEADERS))) {
return NULL;
}
old_header = (PIMAGE_NT_HEADERS)&((const unsigned char *)(data))[dos_header->e_lfanew];
if (old_header->Signature != IMAGE_NT_SIGNATURE) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
if (old_header->FileHeader.Machine != HOST_MACHINE) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
if (old_header->OptionalHeader.SectionAlignment & 1) {
// Only support section alignments that are a multiple of 2
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
section = IMAGE_FIRST_SECTION(old_header);
optionalSectionSize = old_header->OptionalHeader.SectionAlignment;
for (i = 0; i < old_header->FileHeader.NumberOfSections; i++, section++) {
size_t endOfSection;
if (section->SizeOfRawData == 0) {
// Section without data in the DLL
endOfSection = section->VirtualAddress + optionalSectionSize;
}
else {
endOfSection = section->VirtualAddress + section->SizeOfRawData;
}
if (endOfSection > lastSectionEnd) {
lastSectionEnd = endOfSection;
}
}
GetNativeSystemInfo(&sysInfo);
alignedImageSize = AlignValueUp(old_header->OptionalHeader.SizeOfImage, sysInfo.dwPageSize);
if (alignedImageSize != AlignValueUp(lastSectionEnd, sysInfo.dwPageSize)) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return NULL;
}
// reserve memory for image of library
// XXX: is it correct to commit the complete memory region at once?
// calling DllEntry raises an exception if we don't...
code = (unsigned char *)allocMemory((LPVOID)(old_header->OptionalHeader.ImageBase),
alignedImageSize,
MEM_RESERVE | MEM_COMMIT,
PAGE_READWRITE,
userdata);
if (code == NULL) {
// try to allocate memory at arbitrary position
code = (unsigned char *)allocMemory(NULL,
alignedImageSize,
MEM_RESERVE | MEM_COMMIT,
PAGE_READWRITE,
userdata);
if (code == NULL) {
SetLastError(ERROR_OUTOFMEMORY);
return NULL;
}
}
result = (PMEMORYMODULE)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MEMORYMODULE));
if (result == NULL) {
freeMemory(code, 0, MEM_RELEASE, userdata);
SetLastError(ERROR_OUTOFMEMORY);
return NULL;
}
result->codeBase = code;
result->isDLL = (old_header->FileHeader.Characteristics & IMAGE_FILE_DLL) != 0;
result->alloc = allocMemory;
result->free = freeMemory;
result->loadLibrary = loadLibrary;
result->getProcAddress = getProcAddress;
result->freeLibrary = freeLibrary;
result->userdata = userdata;
result->pageSize = sysInfo.dwPageSize;
if (!CheckSize(size, old_header->OptionalHeader.SizeOfHeaders)) {
goto error;
}
// commit memory for headers
headers = (unsigned char *)allocMemory(code,
old_header->OptionalHeader.SizeOfHeaders,
MEM_COMMIT,
PAGE_READWRITE,
userdata);
// copy PE header to code
memcpy(headers, dos_header, old_header->OptionalHeader.SizeOfHeaders);
result->headers = (PIMAGE_NT_HEADERS)&((const unsigned char *)(headers))[dos_header->e_lfanew];
// update position
result->headers->OptionalHeader.ImageBase = (uintptr_t)code;
// copy sections from DLL file block to new memory location
if (!CopySections((const unsigned char *)data, size, old_header, result)) {
goto error;
}
// adjust base address of imported data
locationDelta = (ptrdiff_t)(result->headers->OptionalHeader.ImageBase - old_header->OptionalHeader.ImageBase);
if (locationDelta != 0) {
//if not exist reloc table?
if (result->headers->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress == 0){
goto error;
}
result->isRelocated = PerformBaseRelocation(result, locationDelta);
}
else {
result->isRelocated = TRUE;
}
// load required dlls and adjust function table of imports
if (!BuildImportTable(result)) {
goto error;
}
// mark memory pages depending on section headers and release
// sections that are marked as "discardable"
if (!FinalizeSections(result)) {
goto error;
}
// TLS callbacks are executed BEFORE the main loading
if (!ExecuteTLS(result)) {
goto error;
}
// support exception
InsertExceptionTable(result);
// get entry point of loaded library
if (result->headers->OptionalHeader.AddressOfEntryPoint != 0) {
if (result->isDLL) {
DllEntryProc DllEntry = (DllEntryProc)(LPVOID)(code + result->headers->OptionalHeader.AddressOfEntryPoint);
// notify library about attaching to process
BOOL successfull = (*DllEntry)((HINSTANCE)code, DLL_PROCESS_ATTACH, 0);
if (!successfull) {
SetLastError(ERROR_DLL_INIT_FAILED);
goto error;
}
result->initialized = TRUE;
}
else {
result->exeEntry = (ExeEntryProc)(LPVOID)(code + result->headers->OptionalHeader.AddressOfEntryPoint);
}
}
else {
result->exeEntry = NULL;
}
return (PMEMORYMODULE)result;
error:
// cleanup
MemoryFreeLibrary(result);
return NULL;
}
static int _compare(const void *a, const void *b)
{
const struct ExportNameEntry *p1 = (const struct ExportNameEntry*) a;
const struct ExportNameEntry *p2 = (const struct ExportNameEntry*) b;
return _stricmp(p1->name, p2->name);