Retour Function

bool RetourFunc(BYTE *src, BYTE *restore, const int len);

bool RetourFunc(BYTE *src, BYTE *restore, const int len)
{
	DWORD dwback;
		
	if(!VirtualProtect(src, len, PAGE_READWRITE, &dwback))	{ return false; }
	if(!memcpy(src, restore, len))							{ return false; }

	restore[0] = 0xE9;
	*(DWORD*)(restore+1) = (DWORD)(src - restore) - 5;

	if(!VirtualProtect(src, len, dwback, &dwback))			{ return false; }
	
	return true;
}