CyberCat

I don't know why people prefer integers type for this purpose which forces you to deal with endianness. I just simplified yours too. void inject(uint64_t offset, const void *bytes, size_t bytes_len) { MSHookMemory((void *)getRealOffset(offset), bytes, bytes_len); } Usage: //offset & bytes literal & bytes length /* mov w0, #1 ret */ inject(0x100299DC4, "\x20\x00\x80\x52\xC0\x03\x5F\xD6", 8); You can write as many bytes as you want with this.