python requests库爆破目录遍历漏洞找flag

题目的页面

 题目的目录遍历有一定规律，都是数字排序，而且只有两层目录

#! /usr/bin/env python
# _*_  coding:utf-8 _*_
import requests

url = "http://challenge-cf866d8944333af5.sandbox.ctfhub.com:10800/flag_in_here/"

for i in range(5):
    for j in range(5):
        url_ctf =url+str(i)+"/"+str(j)
        r = requests.get(url_ctf)
        r.encoding = 'utf-8'
        get_file=r.text
        if "flag.txt" in get_file:
            print(url_ctf)

 执行后flag在这个页面中