Project_Asakura/OpenParrot
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mirror of synced 2024-11-14 23:07:36 +01:00
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Merge branch 'master' of https://github.com/teknogods/OpenParrot

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This commit is contained in:
Reaver 2018-09-10 14:26:18 +03:00
commit 2fa0b799ad
1 changed files with 10 additions and 13 deletions
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23
OpenParrot/src/dllmain.cpp
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@ -11,17 +11,6 @@ static void RunMain();
static BYTE originalCode[20];
extern "C" PBYTE originalEP = 0;
void Main_UnprotectModule(HMODULE hModule)
{
PIMAGE_DOS_HEADER header = (PIMAGE_DOS_HEADER)hModule;
PIMAGE_NT_HEADERS ntHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)hModule + header->e_lfanew);
// unprotect the entire PE image
SIZE_T size = ntHeader->OptionalHeader.SizeOfImage;
DWORD oldProtect;
VirtualProtect((LPVOID)hModule, size, PAGE_EXECUTE_READWRITE, &oldProtect);
}
#ifdef _M_AMD64
extern "C" void Main_DoResume();
#endif
@ -30,8 +19,13 @@ static void Main_DoInit()
{
RunMain();
DWORD oldProtect;
VirtualProtect(originalEP, 20, PAGE_EXECUTE_READWRITE, &oldProtect);
memcpy(originalEP, &originalCode, sizeof(originalCode));
VirtualProtect(originalEP, 20, oldProtect, &oldProtect);
#if _M_IX86
__asm jmp originalEP
#elif defined(_M_AMD64)
@ -49,12 +43,13 @@ static void Main_SetSafeInit()
PIMAGE_DOS_HEADER header = (PIMAGE_DOS_HEADER)hModule;
PIMAGE_NT_HEADERS ntHeader = (PIMAGE_NT_HEADERS)((DWORD_PTR)hModule + header->e_lfanew);
Main_UnprotectModule(hModule);
// back up original code
PBYTE ep = (PBYTE)((DWORD_PTR)hModule + ntHeader->OptionalHeader.AddressOfEntryPoint);
memcpy(originalCode, ep, sizeof(originalCode));
DWORD oldProtect;
VirtualProtect(ep, 20, PAGE_EXECUTE_READWRITE, &oldProtect);
#ifdef _M_IX86
// patch to call our EP
int newEP = (int)Main_DoInit - ((int)ep + 5);
@ -68,6 +63,8 @@ static void Main_SetSafeInit()
ep[11] = 0xE0;
#endif
VirtualProtect(ep, 20, oldProtect, &oldProtect);
originalEP = ep;
}
}