mov eax, 0x8b90909d \n not eax \n push eax \n mov eax, 0x9a8dd091 \n not eax \n push eax \n mov eax, 0x969d8cd0 \n not eax \n push eax \n xor eax, eax
put the string /sbin/reboot on the stack through eax register then clear it