DetourUndetected

void *Desvio(PBYTE src, const PBYTE dst, const int len)
{
	DWORD dwProtect;
	PBYTE jmp = (PBYTE)malloc(len + 5);
	INT i;
		char znak = 0x62;
	SIZE_T BytesWritten;


	MEMORY_BASIC_INFORMATION MemInfo;
	LPVOID m_address = 0;


	HANDLE Server = OpenProcess(PROCESS_ALL_ACCESS | PROCESS_VM_READ | PROCESS_VM_WRITE |PROCESS_VM_OPERATION, false, GetCurrentProcessId());


	if((VirtualProtect(src, len, PAGE_EXECUTE_READWRITE, &dwProtect)) != NULL){
		
		VirtualProtect(src, len, PAGE_EXECUTE_READWRITE, &dwProtect);
		
		if(Server){
			memcpy(jmp, src, len);
			VirtualProtectEx (Server , src, len, PAGE_EXECUTE_READWRITE, &dwProtect);
			WriteProcessMemory(Server,(LPVOID) src, &znak, 1, &BytesWritten);
			VirtualProtectEx(Server, (LPVOID)src, 1, dwProtect, &dwProtect);
		}	
	}


	//memcpy(jmp, src, len);
	jmp += len;


	*(BYTE*)(jmp + 0) = 0xE9;
	*(DWORD*)(jmp + 1) = (DWORD)(src + len - jmp) - 5;
	*(WORD*)(src + 0) = 0xC033;
	*(WORD*)(src + 2) = 0xC085;
	*(WORD*)(src + 4) = 0x840F;
	*(DWORD*)(src + 6) = (DWORD)(dst - src) - 10;
	i = 10;


	for (; i < len; i++)
		*(BYTE*)(src + i) = 0x90;


	VirtualProtect(src, len, dwProtect, &dwProtect);
	CloseHandle(Server);
	return(jmp - len);
}