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creatwth.cpp
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//////////////////////////////////////////////////////////////////////////////
//
// Create a process with a DLL (creatwth.cpp of detours.lib)
//
// Microsoft Research Detours Package, Version 4.0.1
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// #define DETOUR_DEBUG 1
#define DETOURS_INTERNAL
#include "detours.h"
#include <stddef.h>
#if DETOURS_VERSION != 0x4c0c1 // 0xMAJORcMINORcPATCH
#error detours.h version mismatch
#endif
#define IMPORT_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT]
#define BOUND_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT]
#define CLR_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR]
#define IAT_DIRECTORY OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IAT]
//////////////////////////////////////////////////////////////////////////////
//
const GUID DETOUR_EXE_HELPER_GUID = { /* ea0251b9-5cde-41b5-98d0-2af4a26b0fee */
0xea0251b9, 0x5cde, 0x41b5,
{ 0x98, 0xd0, 0x2a, 0xf4, 0xa2, 0x6b, 0x0f, 0xee }};
//////////////////////////////////////////////////////////////////////////////
//
// Enumate through modules in the target process.
//
static BOOL WINAPI LoadNtHeaderFromProcess(HANDLE hProcess,
HMODULE hModule,
PIMAGE_NT_HEADERS32 pNtHeader)
{
PBYTE pbModule = (PBYTE)hModule;
if (pbModule == NULL) {
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
if (VirtualQueryEx(hProcess, hModule, &mbi, sizeof(mbi)) == 0) {
return FALSE;
}
IMAGE_DOS_HEADER idh;
if (!ReadProcessMemory(hProcess, pbModule, &idh, sizeof(idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %d\n",
pbModule, pbModule + sizeof(idh), GetLastError()));
return FALSE;
}
if (idh.e_magic != IMAGE_DOS_SIGNATURE ||
(DWORD)idh.e_lfanew > mbi.RegionSize ||
(DWORD)idh.e_lfanew < sizeof(idh)) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return FALSE;
}
if (!ReadProcessMemory(hProcess, pbModule + idh.e_lfanew,
pNtHeader, sizeof(*pNtHeader), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p:%p) failed: %d\n",
pbModule + idh.e_lfanew,
pbModule + idh.e_lfanew + sizeof(*pNtHeader),
pbModule,
GetLastError()));
return FALSE;
}
if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
SetLastError(ERROR_BAD_EXE_FORMAT);
return FALSE;
}
return TRUE;
}
static HMODULE WINAPI EnumerateModulesInProcess(HANDLE hProcess,
HMODULE hModuleLast,
PIMAGE_NT_HEADERS32 pNtHeader)
{
PBYTE pbLast = (PBYTE)hModuleLast + MM_ALLOCATION_GRANULARITY;
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
// Find the next memory region that contains a mapped PE image.
//
for (;; pbLast = (PBYTE)mbi.BaseAddress + mbi.RegionSize) {
if (VirtualQueryEx(hProcess, (PVOID)pbLast, &mbi, sizeof(mbi)) == 0) {
break;
}
// Usermode address space has such an unaligned region size always at the
// end and only at the end.
//
if ((mbi.RegionSize & 0xfff) == 0xfff) {
break;
}
if (((PBYTE)mbi.BaseAddress + mbi.RegionSize) < pbLast) {
break;
}
// Skip uncommitted regions and guard pages.
//
if ((mbi.State != MEM_COMMIT) ||
((mbi.Protect & 0xff) == PAGE_NOACCESS) ||
(mbi.Protect & PAGE_GUARD)) {
continue;
}
if (LoadNtHeaderFromProcess(hProcess, (HMODULE)pbLast, pNtHeader)) {
return (HMODULE)pbLast;
}
}
return NULL;
}
//////////////////////////////////////////////////////////////////////////////
//
// Find a region of memory in which we can create a replacement import table.
//
static PBYTE FindAndAllocateNearBase(HANDLE hProcess, PBYTE pbModule, PBYTE pbBase, DWORD cbAlloc)
{
MEMORY_BASIC_INFORMATION mbi;
ZeroMemory(&mbi, sizeof(mbi));
PBYTE pbLast = pbBase;
for (;; pbLast = (PBYTE)mbi.BaseAddress + mbi.RegionSize) {
ZeroMemory(&mbi, sizeof(mbi));
if (VirtualQueryEx(hProcess, (PVOID)pbLast, &mbi, sizeof(mbi)) == 0) {
if (GetLastError() == ERROR_INVALID_PARAMETER) {
break;
}
DETOUR_TRACE(("VirtualQueryEx(%p) failed: %d\n",
pbLast, GetLastError()));
break;
}
// Usermode address space has such an unaligned region size always at the
// end and only at the end.
//
if ((mbi.RegionSize & 0xfff) == 0xfff) {
break;
}
// Skip anything other than a pure free region.
//
if (mbi.State != MEM_FREE) {
continue;
}
// Use the max of mbi.BaseAddress and pbBase, in case mbi.BaseAddress < pbBase.
PBYTE pbAddress = (PBYTE)mbi.BaseAddress > pbBase ? (PBYTE)mbi.BaseAddress : pbBase;
// Round pbAddress up to the nearest MM allocation boundary.
const DWORD_PTR mmGranularityMinusOne = (DWORD_PTR)(MM_ALLOCATION_GRANULARITY -1);
pbAddress = (PBYTE)(((DWORD_PTR)pbAddress + mmGranularityMinusOne) & ~mmGranularityMinusOne);
#ifdef _WIN64
// The offset from pbModule to any replacement import must fit into 32 bits.
// For simplicity, we check that the offset to the last byte fits into 32 bits,
// instead of the largest offset we'll actually use. The values are very similar.
const size_t GB4 = ((((size_t)1) << 32) - 1);
if ((size_t)(pbAddress + cbAlloc - 1 - pbModule) > GB4) {
DETOUR_TRACE(("FindAndAllocateNearBase(1) failing due to distance >4GB %p\n", pbAddress));
return NULL;
}
#else
UNREFERENCED_PARAMETER(pbModule);
#endif
DETOUR_TRACE(("Free region %p..%p\n",
mbi.BaseAddress,
(PBYTE)mbi.BaseAddress + mbi.RegionSize));
for (; pbAddress < (PBYTE)mbi.BaseAddress + mbi.RegionSize; pbAddress += MM_ALLOCATION_GRANULARITY) {
PBYTE pbAlloc = (PBYTE)VirtualAllocEx(hProcess, pbAddress, cbAlloc,
MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
if (pbAlloc == NULL) {
DETOUR_TRACE(("VirtualAllocEx(%p) failed: %d\n", pbAddress, GetLastError()));
continue;
}
#ifdef _WIN64
// The offset from pbModule to any replacement import must fit into 32 bits.
if ((size_t)(pbAddress + cbAlloc - 1 - pbModule) > GB4) {
DETOUR_TRACE(("FindAndAllocateNearBase(2) failing due to distance >4GB %p\n", pbAddress));
return NULL;
}
#endif
DETOUR_TRACE(("[%p..%p] Allocated for import table.\n",
pbAlloc, pbAlloc + cbAlloc));
return pbAlloc;
}
}
return NULL;
}
static inline DWORD PadToDword(DWORD dw)
{
return (dw + 3) & ~3u;
}
static inline DWORD PadToDwordPtr(DWORD dw)
{
return (dw + 7) & ~7u;
}
static inline HRESULT ReplaceOptionalSizeA(_Inout_z_count_(cchDest) LPSTR pszDest,
_In_ size_t cchDest,
_In_z_ LPCSTR pszSize)
{
if (cchDest == 0 || pszDest == NULL || pszSize == NULL ||
pszSize[0] == '\0' || pszSize[1] == '\0' || pszSize[2] != '\0') {
// can not write into empty buffer or with string other than two chars.
return ERROR_INVALID_PARAMETER;
}
for (; cchDest >= 2; cchDest--, pszDest++) {
if (pszDest[0] == '?' && pszDest[1] == '?') {
pszDest[0] = pszSize[0];
pszDest[1] = pszSize[1];
break;
}
}
return S_OK;
}
static BOOL RecordExeRestore(HANDLE hProcess, HMODULE hModule, DETOUR_EXE_RESTORE& der)
{
// Save the various headers for DetourRestoreAfterWith.
ZeroMemory(&der, sizeof(der));
der.cb = sizeof(der);
der.pidh = (PBYTE)hModule;
der.cbidh = sizeof(der.idh);
if (!ReadProcessMemory(hProcess, der.pidh, &der.idh, sizeof(der.idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %d\n",
der.pidh, der.pidh + der.cbidh, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("IDH: %p..%p\n", der.pidh, der.pidh + der.cbidh));
// We read the NT header in two passes to get the full size.
// First we read just the Signature and FileHeader.
der.pinh = der.pidh + der.idh.e_lfanew;
der.cbinh = FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader);
if (!ReadProcessMemory(hProcess, der.pinh, &der.inh, der.cbinh, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %d\n",
der.pinh, der.pinh + der.cbinh, GetLastError()));
return FALSE;
}
// Second we read the OptionalHeader and Section headers.
der.cbinh = (FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
der.inh.FileHeader.SizeOfOptionalHeader +
der.inh.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER));
if (der.cbinh > sizeof(der.raw)) {
return FALSE;
}
if (!ReadProcessMemory(hProcess, der.pinh, &der.inh, der.cbinh, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %d\n",
der.pinh, der.pinh + der.cbinh, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("INH: %p..%p\n", der.pinh, der.pinh + der.cbinh));
// Third, we read the CLR header
if (der.inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
if (der.inh32.CLR_DIRECTORY.VirtualAddress != 0 &&
der.inh32.CLR_DIRECTORY.Size != 0) {
DETOUR_TRACE(("CLR32.VirtAddr=%x, CLR.Size=%x\n",
der.inh32.CLR_DIRECTORY.VirtualAddress,
der.inh32.CLR_DIRECTORY.Size));
der.pclr = ((PBYTE)hModule) + der.inh32.CLR_DIRECTORY.VirtualAddress;
}
}
else if (der.inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
if (der.inh64.CLR_DIRECTORY.VirtualAddress != 0 &&
der.inh64.CLR_DIRECTORY.Size != 0) {
DETOUR_TRACE(("CLR64.VirtAddr=%x, CLR.Size=%x\n",
der.inh64.CLR_DIRECTORY.VirtualAddress,
der.inh64.CLR_DIRECTORY.Size));
der.pclr = ((PBYTE)hModule) + der.inh64.CLR_DIRECTORY.VirtualAddress;
}
}
if (der.pclr != 0) {
der.cbclr = sizeof(der.clr);
if (!ReadProcessMemory(hProcess, der.pclr, &der.clr, der.cbclr, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(clr@%p..%p) failed: %d\n",
der.pclr, der.pclr + der.cbclr, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("CLR: %p..%p\n", der.pclr, der.pclr + der.cbclr));
}
return TRUE;
}
//////////////////////////////////////////////////////////////////////////////
//
#if DETOURS_32BIT
#define DWORD_XX DWORD32
#define IMAGE_NT_HEADERS_XX IMAGE_NT_HEADERS32
#define IMAGE_NT_OPTIONAL_HDR_MAGIC_XX IMAGE_NT_OPTIONAL_HDR32_MAGIC
#define IMAGE_ORDINAL_FLAG_XX IMAGE_ORDINAL_FLAG32
#define IMAGE_THUNK_DATAXX IMAGE_THUNK_DATA32
#define UPDATE_IMPORTS_XX UpdateImports32
#define DETOURS_BITS_XX 32
#include "uimports.cpp"
#undef DETOUR_EXE_RESTORE_FIELD_XX
#undef DWORD_XX
#undef IMAGE_NT_HEADERS_XX
#undef IMAGE_NT_OPTIONAL_HDR_MAGIC_XX
#undef IMAGE_ORDINAL_FLAG_XX
#undef UPDATE_IMPORTS_XX
#endif // DETOURS_32BIT
#if DETOURS_64BIT
#define DWORD_XX DWORD64
#define IMAGE_NT_HEADERS_XX IMAGE_NT_HEADERS64
#define IMAGE_NT_OPTIONAL_HDR_MAGIC_XX IMAGE_NT_OPTIONAL_HDR64_MAGIC
#define IMAGE_ORDINAL_FLAG_XX IMAGE_ORDINAL_FLAG64
#define IMAGE_THUNK_DATAXX IMAGE_THUNK_DATA64
#define UPDATE_IMPORTS_XX UpdateImports64
#define DETOURS_BITS_XX 64
#include "uimports.cpp"
#undef DETOUR_EXE_RESTORE_FIELD_XX
#undef DWORD_XX
#undef IMAGE_NT_HEADERS_XX
#undef IMAGE_NT_OPTIONAL_HDR_MAGIC_XX
#undef IMAGE_ORDINAL_FLAG_XX
#undef UPDATE_IMPORTS_XX
#endif // DETOURS_64BIT
//////////////////////////////////////////////////////////////////////////////
//
#if DETOURS_64BIT
C_ASSERT(sizeof(IMAGE_NT_HEADERS64) == sizeof(IMAGE_NT_HEADERS32) + 16);
static BOOL UpdateFrom32To64(HANDLE hProcess, HMODULE hModule, WORD machine,
DETOUR_EXE_RESTORE& der)
{
IMAGE_DOS_HEADER idh;
IMAGE_NT_HEADERS32 inh32;
IMAGE_NT_HEADERS64 inh64;
IMAGE_SECTION_HEADER sects[32];
PBYTE pbModule = (PBYTE)hModule;
DWORD n;
ZeroMemory(&inh32, sizeof(inh32));
ZeroMemory(&inh64, sizeof(inh64));
ZeroMemory(sects, sizeof(sects));
DETOUR_TRACE(("UpdateFrom32To64(%04x)\n", machine));
//////////////////////////////////////////////////////// Read old headers.
//
if (!ReadProcessMemory(hProcess, pbModule, &idh, sizeof(idh), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p) failed: %d\n",
pbModule, pbModule + sizeof(idh), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(idh@%p..%p)\n",
pbModule, pbModule + sizeof(idh)));
PBYTE pnh = pbModule + idh.e_lfanew;
if (!ReadProcessMemory(hProcess, pnh, &inh32, sizeof(inh32), NULL)) {
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p) failed: %d\n",
pnh, pnh + sizeof(inh32), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(inh@%p..%p)\n", pnh, pnh + sizeof(inh32)));
if (inh32.FileHeader.NumberOfSections > (sizeof(sects)/sizeof(sects[0]))) {
return FALSE;
}
PBYTE psects = pnh +
FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
inh32.FileHeader.SizeOfOptionalHeader;
ULONG cb = inh32.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
if (!ReadProcessMemory(hProcess, psects, §s, cb, NULL)) {
DETOUR_TRACE(("ReadProcessMemory(ish@%p..%p) failed: %d\n",
psects, psects + cb, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("ReadProcessMemory(ish@%p..%p)\n", psects, psects + cb));
////////////////////////////////////////////////////////// Convert header.
//
inh64.Signature = inh32.Signature;
inh64.FileHeader = inh32.FileHeader;
inh64.FileHeader.Machine = machine;
inh64.FileHeader.SizeOfOptionalHeader = sizeof(IMAGE_OPTIONAL_HEADER64);
inh64.OptionalHeader.Magic = IMAGE_NT_OPTIONAL_HDR64_MAGIC;
inh64.OptionalHeader.MajorLinkerVersion = inh32.OptionalHeader.MajorLinkerVersion;
inh64.OptionalHeader.MinorLinkerVersion = inh32.OptionalHeader.MinorLinkerVersion;
inh64.OptionalHeader.SizeOfCode = inh32.OptionalHeader.SizeOfCode;
inh64.OptionalHeader.SizeOfInitializedData = inh32.OptionalHeader.SizeOfInitializedData;
inh64.OptionalHeader.SizeOfUninitializedData = inh32.OptionalHeader.SizeOfUninitializedData;
inh64.OptionalHeader.AddressOfEntryPoint = inh32.OptionalHeader.AddressOfEntryPoint;
inh64.OptionalHeader.BaseOfCode = inh32.OptionalHeader.BaseOfCode;
inh64.OptionalHeader.ImageBase = inh32.OptionalHeader.ImageBase;
inh64.OptionalHeader.SectionAlignment = inh32.OptionalHeader.SectionAlignment;
inh64.OptionalHeader.FileAlignment = inh32.OptionalHeader.FileAlignment;
inh64.OptionalHeader.MajorOperatingSystemVersion
= inh32.OptionalHeader.MajorOperatingSystemVersion;
inh64.OptionalHeader.MinorOperatingSystemVersion
= inh32.OptionalHeader.MinorOperatingSystemVersion;
inh64.OptionalHeader.MajorImageVersion = inh32.OptionalHeader.MajorImageVersion;
inh64.OptionalHeader.MinorImageVersion = inh32.OptionalHeader.MinorImageVersion;
inh64.OptionalHeader.MajorSubsystemVersion = inh32.OptionalHeader.MajorSubsystemVersion;
inh64.OptionalHeader.MinorSubsystemVersion = inh32.OptionalHeader.MinorSubsystemVersion;
inh64.OptionalHeader.Win32VersionValue = inh32.OptionalHeader.Win32VersionValue;
inh64.OptionalHeader.SizeOfImage = inh32.OptionalHeader.SizeOfImage;
inh64.OptionalHeader.SizeOfHeaders = inh32.OptionalHeader.SizeOfHeaders;
inh64.OptionalHeader.CheckSum = inh32.OptionalHeader.CheckSum;
inh64.OptionalHeader.Subsystem = inh32.OptionalHeader.Subsystem;
inh64.OptionalHeader.DllCharacteristics = inh32.OptionalHeader.DllCharacteristics;
inh64.OptionalHeader.SizeOfStackReserve = inh32.OptionalHeader.SizeOfStackReserve;
inh64.OptionalHeader.SizeOfStackCommit = inh32.OptionalHeader.SizeOfStackCommit;
inh64.OptionalHeader.SizeOfHeapReserve = inh32.OptionalHeader.SizeOfHeapReserve;
inh64.OptionalHeader.SizeOfHeapCommit = inh32.OptionalHeader.SizeOfHeapCommit;
inh64.OptionalHeader.LoaderFlags = inh32.OptionalHeader.LoaderFlags;
inh64.OptionalHeader.NumberOfRvaAndSizes = inh32.OptionalHeader.NumberOfRvaAndSizes;
for (n = 0; n < IMAGE_NUMBEROF_DIRECTORY_ENTRIES; n++) {
inh64.OptionalHeader.DataDirectory[n] = inh32.OptionalHeader.DataDirectory[n];
}
/////////////////////////////////////////////////////// Write new headers.
//
DWORD dwProtect = 0;
if (!DetourVirtualProtectSameExecuteEx(hProcess, pbModule, inh64.OptionalHeader.SizeOfHeaders,
PAGE_EXECUTE_READWRITE, &dwProtect)) {
return FALSE;
}
if (!WriteProcessMemory(hProcess, pnh, &inh64, sizeof(inh64), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p) failed: %d\n",
pnh, pnh + sizeof(inh64), GetLastError()));
return FALSE;
}
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p)\n", pnh, pnh + sizeof(inh64)));
psects = pnh +
FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
inh64.FileHeader.SizeOfOptionalHeader;
cb = inh64.FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
if (!WriteProcessMemory(hProcess, psects, §s, cb, NULL)) {
DETOUR_TRACE(("WriteProcessMemory(ish@%p..%p) failed: %d\n",
psects, psects + cb, GetLastError()));
return FALSE;
}
DETOUR_TRACE(("WriteProcessMemory(ish@%p..%p)\n", psects, psects + cb));
// Record the updated headers.
if (!RecordExeRestore(hProcess, hModule, der)) {
return FALSE;
}
// Remove the import table.
if (der.pclr != NULL && (der.clr.Flags & COMIMAGE_FLAGS_ILONLY)) {
inh64.IMPORT_DIRECTORY.VirtualAddress = 0;
inh64.IMPORT_DIRECTORY.Size = 0;
if (!WriteProcessMemory(hProcess, pnh, &inh64, sizeof(inh64), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(inh@%p..%p) failed: %d\n",
pnh, pnh + sizeof(inh64), GetLastError()));
return FALSE;
}
}
DWORD dwOld = 0;
if (!VirtualProtectEx(hProcess, pbModule, inh64.OptionalHeader.SizeOfHeaders,
dwProtect, &dwOld)) {
return FALSE;
}
return TRUE;
}
#endif // DETOURS_64BIT
typedef BOOL(WINAPI *LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
static BOOL IsWow64ProcessHelper(HANDLE hProcess,
PBOOL Wow64Process)
{
#ifdef _X86_
if (Wow64Process == NULL) {
return FALSE;
}
// IsWow64Process is not available on all supported versions of Windows.
//
HMODULE hKernel32 = LoadLibraryW(L"KERNEL32.DLL");
if (hKernel32 == NULL) {
DETOUR_TRACE(("LoadLibraryW failed: %d\n", GetLastError()));
return FALSE;
}
LPFN_ISWOW64PROCESS pfnIsWow64Process = (LPFN_ISWOW64PROCESS)GetProcAddress(
hKernel32, "IsWow64Process");
if (pfnIsWow64Process == NULL) {
DETOUR_TRACE(("GetProcAddress failed: %d\n", GetLastError()));
return FALSE;
}
return pfnIsWow64Process(hProcess, Wow64Process);
#else
return IsWow64Process(hProcess, Wow64Process);
#endif
}
//////////////////////////////////////////////////////////////////////////////
//
BOOL WINAPI DetourUpdateProcessWithDll(_In_ HANDLE hProcess,
_In_reads_(nDlls) LPCSTR *rlpDlls,
_In_ DWORD nDlls)
{
// Find the next memory region that contains a mapped PE image.
//
BOOL bIs32BitProcess;
BOOL bIs64BitOS = FALSE;
HMODULE hModule = NULL;
HMODULE hLast = NULL;
DETOUR_TRACE(("DetourUpdateProcessWithDll(%p,dlls=%d)\n", hProcess, nDlls));
for (;;) {
IMAGE_NT_HEADERS32 inh;
if ((hLast = EnumerateModulesInProcess(hProcess, hLast, &inh)) == NULL) {
break;
}
DETOUR_TRACE(("%p machine=%04x magic=%04x\n",
hLast, inh.FileHeader.Machine, inh.OptionalHeader.Magic));
if ((inh.FileHeader.Characteristics & IMAGE_FILE_DLL) == 0) {
hModule = hLast;
DETOUR_TRACE(("%p Found EXE\n", hLast));
}
}
if (hModule == NULL) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
// Determine if the target process is 32bit or 64bit. This is a two-stop process:
//
// 1. First, determine if we're running on a 64bit operating system.
// - If we're running 64bit code (i.e. _WIN64 is defined), this is trivially true.
// - If we're running 32bit code (i.e. _WIN64 is not defined), test if
// we're running under Wow64. If so, it implies that the operating system
// is 64bit.
//
#ifdef _WIN64
bIs64BitOS = TRUE;
#else
if (!IsWow64ProcessHelper(GetCurrentProcess(), &bIs64BitOS)) {
return FALSE;
}
#endif
// 2. With the operating system bitness known, we can now consider the target process:
// - If we're running on a 64bit OS, the target process is 32bit in case
// it is running under Wow64. Otherwise, it's 64bit, running natively
// (without Wow64).
// - If we're running on a 32bit OS, the target process must be 32bit, too.
//
if (bIs64BitOS) {
if (!IsWow64ProcessHelper(hProcess, &bIs32BitProcess)) {
return FALSE;
}
} else {
bIs32BitProcess = TRUE;
}
DETOUR_TRACE((" 32BitExe=%d 32BitProcess\n", bHas32BitExe, bIs32BitProcess));
return DetourUpdateProcessWithDllEx(hProcess,
hModule,
bIs32BitProcess,
rlpDlls,
nDlls);
}
BOOL WINAPI DetourUpdateProcessWithDllEx(_In_ HANDLE hProcess,
_In_ HMODULE hModule,
_In_ BOOL bIs32BitProcess,
_In_reads_(nDlls) LPCSTR *rlpDlls,
_In_ DWORD nDlls)
{
// Find the next memory region that contains a mapped PE image.
//
BOOL bIs32BitExe = FALSE;
DETOUR_TRACE(("DetourUpdateProcessWithDllEx(%p,%p,dlls=%d)\n", hProcess, hModule, nDlls));
IMAGE_NT_HEADERS32 inh;
if (hModule == NULL || LoadNtHeaderFromProcess(hProcess, hModule, &inh) == NULL) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
if (inh.OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC
&& inh.FileHeader.Machine != 0) {
bIs32BitExe = TRUE;
}
DETOUR_TRACE((" 32BitExe=%d 32BitProcess\n", bIs32BitExe, bIs32BitProcess));
if (hModule == NULL) {
SetLastError(ERROR_INVALID_OPERATION);
return FALSE;
}
// Save the various headers for DetourRestoreAfterWith.
//
DETOUR_EXE_RESTORE der;
if (!RecordExeRestore(hProcess, hModule, der)) {
return FALSE;
}
#if defined(DETOURS_64BIT)
// Try to convert a neutral 32-bit managed binary to a 64-bit managed binary.
if (bIs32BitExe && !bIs32BitProcess) {
if (!der.pclr // Native binary
|| (der.clr.Flags & COMIMAGE_FLAGS_ILONLY) == 0 // Or mixed-mode MSIL
|| (der.clr.Flags & COMIMAGE_FLAGS_32BITREQUIRED) != 0) { // Or 32BIT Required MSIL
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
if (!UpdateFrom32To64(hProcess, hModule,
#if defined(DETOURS_X64)
IMAGE_FILE_MACHINE_AMD64,
#elif defined(DETOURS_IA64)
IMAGE_FILE_MACHINE_IA64,
#elif defined(DETOURS_ARM64)
IMAGE_FILE_MACHINE_ARM64,
#else
#error Must define one of DETOURS_X64 or DETOURS_IA64 or DETOURS_ARM64 on 64-bit.
#endif
der)) {
return FALSE;
}
bIs32BitExe = FALSE;
}
#endif // DETOURS_64BIT
// Now decide if we can insert the detour.
#if defined(DETOURS_32BIT)
if (bIs32BitProcess) {
// 32-bit native or 32-bit managed process on any platform.
if (!UpdateImports32(hProcess, hModule, rlpDlls, nDlls)) {
return FALSE;
}
}
else {
// 64-bit native or 64-bit managed process.
//
// Can't detour a 64-bit process with 32-bit code.
// Note: This happens for 32-bit PE binaries containing only
// manage code that have been marked as 64-bit ready.
//
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
#elif defined(DETOURS_64BIT)
if (bIs32BitProcess || bIs32BitExe) {
// Can't detour a 32-bit process with 64-bit code.
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
else {
// 64-bit native or 64-bit managed process on any platform.
if (!UpdateImports64(hProcess, hModule, rlpDlls, nDlls)) {
return FALSE;
}
}
#else
#pragma Must define one of DETOURS_32BIT or DETOURS_64BIT.
#endif // DETOURS_64BIT
/////////////////////////////////////////////////// Update the CLR header.
//
if (der.pclr != NULL) {
DETOUR_CLR_HEADER clr;
CopyMemory(&clr, &der.clr, sizeof(clr));
clr.Flags &= ~COMIMAGE_FLAGS_ILONLY; // Clear the IL_ONLY flag.
DWORD dwProtect;
if (!DetourVirtualProtectSameExecuteEx(hProcess, der.pclr, sizeof(clr), PAGE_READWRITE, &dwProtect)) {
DETOUR_TRACE(("VirtualProtectEx(clr) write failed: %d\n", GetLastError()));
return FALSE;
}
if (!WriteProcessMemory(hProcess, der.pclr, &clr, sizeof(clr), NULL)) {
DETOUR_TRACE(("WriteProcessMemory(clr) failed: %d\n", GetLastError()));
return FALSE;
}
if (!VirtualProtectEx(hProcess, der.pclr, sizeof(clr), dwProtect, &dwProtect)) {
DETOUR_TRACE(("VirtualProtectEx(clr) restore failed: %d\n", GetLastError()));
return FALSE;
}
DETOUR_TRACE(("CLR: %p..%p\n", der.pclr, der.pclr + der.cbclr));
#if DETOURS_64BIT
if (der.clr.Flags & COMIMAGE_FLAGS_32BITREQUIRED) { // Is the 32BIT Required Flag set?
// X64 never gets here because the process appears as a WOW64 process.
// However, on IA64, it doesn't appear to be a WOW process.
DETOUR_TRACE(("CLR Requires 32-bit\n", der.pclr, der.pclr + der.cbclr));
SetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
#endif // DETOURS_64BIT
}
//////////////////////////////// Save the undo data to the target process.
//
if (!DetourCopyPayloadToProcess(hProcess, DETOUR_EXE_RESTORE_GUID, &der, sizeof(der))) {
DETOUR_TRACE(("DetourCopyPayloadToProcess failed: %d\n", GetLastError()));
return FALSE;
}
return TRUE;
}
//////////////////////////////////////////////////////////////////////////////
//
BOOL WINAPI DetourCreateProcessWithDllA(_In_opt_ LPCSTR lpApplicationName,
_Inout_opt_ LPSTR lpCommandLine,
_In_opt_ LPSECURITY_ATTRIBUTES lpProcessAttributes,
_In_opt_ LPSECURITY_ATTRIBUTES lpThreadAttributes,
_In_ BOOL bInheritHandles,
_In_ DWORD dwCreationFlags,
_In_opt_ LPVOID lpEnvironment,
_In_opt_ LPCSTR lpCurrentDirectory,
_In_ LPSTARTUPINFOA lpStartupInfo,
_Out_ LPPROCESS_INFORMATION lpProcessInformation,
_In_ LPCSTR lpDllName,
_In_opt_ PDETOUR_CREATE_PROCESS_ROUTINEA pfCreateProcessA)
{
DWORD dwMyCreationFlags = (dwCreationFlags | CREATE_SUSPENDED);
PROCESS_INFORMATION pi;
BOOL fResult = FALSE;
if (pfCreateProcessA == NULL) {
pfCreateProcessA = CreateProcessA;
}
fResult = pfCreateProcessA(lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwMyCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
&pi);
if (lpProcessInformation != NULL) {
CopyMemory(lpProcessInformation, &pi, sizeof(pi));
}
if (!fResult) {
return FALSE;
}
LPCSTR rlpDlls[2];
DWORD nDlls = 0;
if (lpDllName != NULL) {
rlpDlls[nDlls++] = lpDllName;
}
if (!DetourUpdateProcessWithDll(pi.hProcess, rlpDlls, nDlls)) {
TerminateProcess(pi.hProcess, ~0u);
return FALSE;
}
if (!(dwCreationFlags & CREATE_SUSPENDED)) {
ResumeThread(pi.hThread);
}
return TRUE;
}
BOOL WINAPI DetourCreateProcessWithDllW(_In_opt_ LPCWSTR lpApplicationName,
_Inout_opt_ LPWSTR lpCommandLine,
_In_opt_ LPSECURITY_ATTRIBUTES lpProcessAttributes,
_In_opt_ LPSECURITY_ATTRIBUTES lpThreadAttributes,
_In_ BOOL bInheritHandles,
_In_ DWORD dwCreationFlags,
_In_opt_ LPVOID lpEnvironment,
_In_opt_ LPCWSTR lpCurrentDirectory,
_In_ LPSTARTUPINFOW lpStartupInfo,
_Out_ LPPROCESS_INFORMATION lpProcessInformation,
_In_ LPCSTR lpDllName,
_In_opt_ PDETOUR_CREATE_PROCESS_ROUTINEW pfCreateProcessW)
{
DWORD dwMyCreationFlags = (dwCreationFlags | CREATE_SUSPENDED);
PROCESS_INFORMATION pi;
if (pfCreateProcessW == NULL) {
pfCreateProcessW = CreateProcessW;
}
BOOL fResult = pfCreateProcessW(lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwMyCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
&pi);
if (lpProcessInformation) {
CopyMemory(lpProcessInformation, &pi, sizeof(pi));
}
if (!fResult) {
return FALSE;
}
LPCSTR rlpDlls[2];
DWORD nDlls = 0;
if (lpDllName != NULL) {
rlpDlls[nDlls++] = lpDllName;
}
if (!DetourUpdateProcessWithDll(pi.hProcess, rlpDlls, nDlls)) {
TerminateProcess(pi.hProcess, ~0u);
return FALSE;
}
if (!(dwCreationFlags & CREATE_SUSPENDED)) {
ResumeThread(pi.hThread);
}
return TRUE;
}
BOOL WINAPI DetourCopyPayloadToProcess(_In_ HANDLE hProcess,
_In_ REFGUID rguid,
_In_reads_bytes_(cbData) PVOID pvData,
_In_ DWORD cbData)
{
DWORD cbTotal = (sizeof(IMAGE_DOS_HEADER) +
sizeof(IMAGE_NT_HEADERS) +
sizeof(IMAGE_SECTION_HEADER) +
sizeof(DETOUR_SECTION_HEADER) +
sizeof(DETOUR_SECTION_RECORD) +
cbData);
PBYTE pbBase = (PBYTE)VirtualAllocEx(hProcess, NULL, cbTotal,
MEM_COMMIT, PAGE_READWRITE);
if (pbBase == NULL) {
DETOUR_TRACE(("VirtualAllocEx(%d) failed: %d\n", cbTotal, GetLastError()));
return FALSE;
}
PBYTE pbTarget = pbBase;
IMAGE_DOS_HEADER idh;
IMAGE_NT_HEADERS inh;
IMAGE_SECTION_HEADER ish;
DETOUR_SECTION_HEADER dsh;
DETOUR_SECTION_RECORD dsr;
SIZE_T cbWrote = 0;
ZeroMemory(&idh, sizeof(idh));
idh.e_magic = IMAGE_DOS_SIGNATURE;
idh.e_lfanew = sizeof(idh);
if (!WriteProcessMemory(hProcess, pbTarget, &idh, sizeof(idh), &cbWrote) ||
cbWrote != sizeof(idh)) {
DETOUR_TRACE(("WriteProcessMemory(idh) failed: %d\n", GetLastError()));
return FALSE;
}
pbTarget += sizeof(idh);
ZeroMemory(&inh, sizeof(inh));
inh.Signature = IMAGE_NT_SIGNATURE;
inh.FileHeader.SizeOfOptionalHeader = sizeof(inh.OptionalHeader);
inh.FileHeader.Characteristics = IMAGE_FILE_DLL;
inh.FileHeader.NumberOfSections = 1;
inh.OptionalHeader.Magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
if (!WriteProcessMemory(hProcess, pbTarget, &inh, sizeof(inh), &cbWrote) ||
cbWrote != sizeof(inh)) {
return FALSE;
}
pbTarget += sizeof(inh);
ZeroMemory(&ish, sizeof(ish));
memcpy(ish.Name, ".detour", sizeof(ish.Name));
ish.VirtualAddress = (DWORD)((pbTarget + sizeof(ish)) - pbBase);
ish.SizeOfRawData = (sizeof(DETOUR_SECTION_HEADER) +
sizeof(DETOUR_SECTION_RECORD) +
cbData);
if (!WriteProcessMemory(hProcess, pbTarget, &ish, sizeof(ish), &cbWrote) ||
cbWrote != sizeof(ish)) {
return FALSE;
}
pbTarget += sizeof(ish);
ZeroMemory(&dsh, sizeof(dsh));
dsh.cbHeaderSize = sizeof(dsh);
dsh.nSignature = DETOUR_SECTION_HEADER_SIGNATURE;
dsh.nDataOffset = sizeof(DETOUR_SECTION_HEADER);
dsh.cbDataSize = (sizeof(DETOUR_SECTION_HEADER) +
sizeof(DETOUR_SECTION_RECORD) +
cbData);
if (!WriteProcessMemory(hProcess, pbTarget, &dsh, sizeof(dsh), &cbWrote) ||
cbWrote != sizeof(dsh)) {
return FALSE;
}
pbTarget += sizeof(dsh);
ZeroMemory(&dsr, sizeof(dsr));
dsr.cbBytes = cbData + sizeof(DETOUR_SECTION_RECORD);
dsr.nReserved = 0;
dsr.guid = rguid;
if (!WriteProcessMemory(hProcess, pbTarget, &dsr, sizeof(dsr), &cbWrote) ||
cbWrote != sizeof(dsr)) {
return FALSE;
}
pbTarget += sizeof(dsr);
if (!WriteProcessMemory(hProcess, pbTarget, pvData, cbData, &cbWrote) ||
cbWrote != cbData) {
return FALSE;
}
pbTarget += cbData;
DETOUR_TRACE(("Copied %d byte payload into target process at %p\n",
cbTotal, pbTarget - cbTotal));
return TRUE;
}
static BOOL s_fSearchedForHelper = FALSE;
static PDETOUR_EXE_HELPER s_pHelper = NULL;
VOID CALLBACK DetourFinishHelperProcess(_In_ HWND,
_In_ HINSTANCE,
_In_ LPSTR,
_In_ INT)
{
LPCSTR * rlpDlls = NULL;
DWORD Result = 9900;
DWORD cOffset = 0;
DWORD cSize = 0;
HANDLE hProcess = NULL;
if (s_pHelper == NULL) {
DETOUR_TRACE(("DetourFinishHelperProcess called with s_pHelper = NULL.\n"));
Result = 9905;
goto Cleanup;
}
hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, s_pHelper->pid);
if (hProcess == NULL) {
DETOUR_TRACE(("OpenProcess(pid=%d) failed: %d\n",
s_pHelper->pid, GetLastError()));
Result = 9901;
goto Cleanup;
}
rlpDlls = new NOTHROW LPCSTR [s_pHelper->nDlls];
cSize = s_pHelper->cb - sizeof(DETOUR_EXE_HELPER);
for (DWORD n = 0; n < s_pHelper->nDlls; n++) {
size_t cchDest = 0;
HRESULT hr = StringCchLengthA(&s_pHelper->rDlls[cOffset], cSize - cOffset, &cchDest);