scriptcontext grabber

namespace Memory2
{
bool compare(const char* location, const char* pattern, const char* mask)
{
for (; *mask; ++pattern, ++mask, ++location)
{
if (*mask == 'x' && *location != *pattern)
{
return false;
}
}
return true;
}
uintptr_t scan(const char* pattern, const char* mask, uintptr_t start, uintptr_t end)
{
for (; start <= end; ++start)
{
if (compare((char*)start, (char*)pattern, mask))
{
return start;
}
}
return 0;
}
uintptr_t scan(const char* pattern, const char* mask)
{
MODULEINFO moduleInfo;
if (GetModuleInformation(GetCurrentProcess(), GetModuleHandle(0), &moduleInfo, sizeof(moduleInfo)))
return scan(pattern, mask, (uintptr_t)moduleInfo.lpBaseOfDll, moduleInfo.SizeOfImage + (uintptr_t)moduleInfo.lpBaseOfDll);
return 0;
}
uintptr_t scan(char* pattern, size_t start = 0x400000, size_t end = 0xffffffff)
{
MEMORY_BASIC_INFORMATION mbi;
char* buffer = reinterpret_cast<char*>(malloc(1024));
while (start < end)
{
VirtualQueryEx(GetCurrentProcess(), (void*)start, &mbi, sizeof(mbi));
if ((mbi.AllocationProtect & 238) && !(mbi.Protect & 257) && (mbi.State & 4096) && (mbi.Protect & (PAGE_READWRITE | PAGE_WRITECOPY | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY)))
{
for (char* i = (char*)mbi.BaseAddress; i < (char*)mbi.BaseAddress + mbi.RegionSize;) {
SIZE_T bytesRead;
ReadProcessMemory(GetCurrentProcess(), i, buffer, 1024, &bytesRead);
for (int pad = 0; pad < bytesRead; pad++)
{
if (*(uintptr_t*)(buffer + pad) == *(uintptr_t*)pattern) {
return (uintptr_t)(i + pad);
}
}
i += bytesRead;
}
}
start += mbi.RegionSize;
}
return 0;
}
}

uintptr_t grabcontext() {
uint32_t ScriptContextVftable = *((uint32_t*)(Memory2::scan("\xC7\x07\x00\x00\x00\x00\xC7\x47\x00\x00\x00\x00\x00\x8B\x87", "xx????xx?????xx") + 2));
return Memory2::scan((char*)& ScriptContextVftable);
}