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Taskbar10: Revised the pattern for patching the new IME context menu so that it works on 25951

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This commit is contained in:
Amrsatrio 2023-12-22 19:56:12 +07:00
parent ce9f973167
commit 4bea5f688d
1 changed files with 27 additions and 50 deletions
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77
ExplorerPatcher/utility.h
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@ -583,64 +583,41 @@ inline BOOL IncrementDLLReferenceCount(HINSTANCE hinst)
return TRUE;
}
#ifdef _WIN64
PVOID FindPattern(PVOID pBase, SIZE_T dwSize, LPCSTR lpPattern, LPCSTR lpMask);
inline BOOL WINAPI PatchContextMenuOfNewMicrosoftIME(BOOL* bFound)
{
// huge thanks to @Simplestas: https://github.com/valinet/ExplorerPatcher/issues/598
if (bFound) *bFound = FALSE;
DWORD patch_from, patch_to;
if (IsWindows11Version22H2OrHigher())
{
// cmp byte ptr [rbp+40h+arg_0], r13b
patch_from = 0x506D3844;
patch_to = 0x546D3844;
}
else
{
// cmp byte ptr [rbp+50h], r12b
patch_from = 0x50653844;
patch_to = 0x54653844;
}
HMODULE hInputSwitch = NULL;
if (!GetModuleHandleExW(0, L"InputSwitch.dll", &hInputSwitch))
{
return FALSE;
}
PIMAGE_DOS_HEADER dosHeader = (PIMAGE_DOS_HEADER)hInputSwitch;
PIMAGE_NT_HEADERS pNTHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)dosHeader + dosHeader->e_lfanew);
PIMAGE_SECTION_HEADER pSectionHeader = (PIMAGE_SECTION_HEADER)(pNTHeader + 1);
char* mod = 0;
int i;
for (i = 0; i < pNTHeader->FileHeader.NumberOfSections; i++)
{
//if (strcmp((char*)pSectionHeader[i].Name, ".text") == 0)
if ((pSectionHeader[i].Characteristics & IMAGE_SCN_CNT_CODE) && pSectionHeader[i].SizeOfRawData)
{
mod = (char*)dosHeader + pSectionHeader[i].VirtualAddress;
break;
}
}
if (!mod)
{
MODULEINFO mi;
GetModuleInformation(GetCurrentProcess(), hInputSwitch, &mi, sizeof(mi));
// 44 38 ?? ?? 74 ?? 48 8B CE E8 ?? ?? ?? ?? 85 C0
// ^^ Change jz into jmp
PBYTE match = (PBYTE)FindPattern(
hInputSwitch,
mi.SizeOfImage,
"\x44\x38\x00\x00\x74\x00\x48\x8B\xCE\xE8\x00\x00\x00\x00\x85\xC0",
"xx??x?xxxx????xx"
);
if (!match)
return FALSE;
}
for (size_t off = 0; off < pSectionHeader[i].Misc.VirtualSize - sizeof(DWORD); ++off)
{
DWORD* ptr = (DWORD*)(mod + off);
if (*ptr == patch_from)
{
if (bFound) *bFound = TRUE;
DWORD prot;
if (VirtualProtect(ptr, sizeof(DWORD), PAGE_EXECUTE_READWRITE, &prot))
{
*ptr = patch_to;
VirtualProtect(ptr, sizeof(DWORD), prot, &prot);
return TRUE;
}
break;
}
}
return FALSE;
DWORD dwOldProtect;
if (!VirtualProtect(match + 4, 1, PAGE_EXECUTE_READWRITE, &dwOldProtect))
return FALSE;
match[6] = 0xEB;
VirtualProtect(match + 4, 1, dwOldProtect, &dwOldProtect);
return TRUE;
}
#endif
extern UINT PleaseWaitTimeout;
extern HHOOK PleaseWaitHook;