线下AWD平台搭建以及一些相关问题解决
一.前言
文章首发于tools,因为发现了一些新问题但是没法改,所以在博客进行补充。
因为很多人可能没有机会参加线下的AWD比赛,导致缺乏这方面经验,比如我参加过五次线下AWD攻防,虽然看过许多网上的AWD打发套路,但终究都是纸上谈兵,所以前几次都是被吊锤,一来不熟悉环境,二来有点手忙脚乱,其实根本原因就是缺乏经验,因此最近翻了翻Github,终于找到一个不错的项目,下面便是搭建过程和一些注意事项。
二、平台搭建过程:
准备工作:需要准备一台Ubuntu虚拟机,我的版本是16.04,过程比较详细,如果会这些的大佬挑重点看就行。
1.更新apt包索引
$ sudo apt-get update
2.安装git
$ sudo apt install git
3.安装docker
$ sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu$(lsb_release -cs) stable"
//查看可用的docker
$ sudo apt-cache madison docker-ce
[attach]79574[/attach]
//选择要安装的特定版本
$ sudo apt-get install docker-ce=
//比如我要安装 18.06.3~ce~3-0~ubuntu,命令如下
$ sudo apt-get install docker-ce=18.06.3~ce~3-0~ubuntu
4.克隆项目
$ sudo git clone https://github.com/zhl2008/awd-platform.git
5.进入项目
$ sudo cd awd-platform/
6.下载镜像
$ sudo docker pull zhl2008/web_14.04
到此环境已经搭建完毕了,接下来讲一下操作方法和规则:
三、操作方法:
以root权限进入/awd-platform目录下,以yunnan_simple镜像为例:
镜像已下载,直接启动即可
1.复制镜像
# python batch.py web_yunnan_simple 3//复制3个web_yunnan_simple的靶机,数值可改
# python start.py ./ 3 //启动三个docker靶机和check服务器、flag_server服务器。数值可改
2.裁判机启动:这里他写的check.py有问题,是无法启用的,所以我改了一下,根据爬取页面关键字判断网页是否被删除,当然也可以添加其他的页面,比如不允许删除admin.php,可以添加admin_check()函数,根据admin页面关键字判断是否被删除。
#!/usr/bin/env python # -*- coding:utf8 -*- ''' ''' import hashlib import base64 sleep_time = 300 debug = True headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36"} import time import httplib import urllib2 import ssl my_time = 'AAAA' __doc__ = 'http(method,host,port,url,data,headers)' flag_server = '172.17.0.1' key = '744def038f39652db118a68ab34895dc' hosts = open('host.lists','r').readlines() user_id = [host.split(':')[0] for host in hosts] hosts = [host.split(':')[1] for host in hosts] port = 80 def http(method,host,port,url,data,headers): con=httplib.HTTPConnection(host,port,timeout=2) if method=='post' or method=='POST': headers['Content-Length']=len(data) headers['Content-Type']='application/x-www-form-urlencoded' con.request("POST",url,data,headers=headers) else: headers['Content-Length'] = 0 con.request("GET",url,headers=headers) res = con.getresponse() if res.getheader('set-cookie'): #headers['Cookie'] = res.getheader('set-cookie') pass if res.getheader('Location'): print "Your 302 direct is: "+res.getheader('Location') a = res.read() con.close() return a def https(method,host,port,url,data,headers): url = 'https://' + host + ":" + str(port) + url req = urllib2.Request(url,data,headers) response = urllib2.urlopen(req) return response.read() def get_score(): res = http('get',flag_server,8080,'/score.php?key=%s'%key,'',headers) print res user_scores = res.split('|') print "******************************************************************" res = '' print res print "******************************************************************" return user_scores def write_score(scores): scores = '|'.join(scores) res = http('get',flag_server,8080,'/score.php?key=%s&write=1&score=%s'%(key,scores),'',headers) if res == "success": return True else: print res raise ValueError class check(): def index_check(self): res = http('get',host,port,'/index.php?file=%s'%str(my_time),'',headers) if 'perspi' in res: return True if debug: print "[fail!] index_fail" return False def server_check(): try: a = check() if not a.index_check(): return False return True except Exception,e: print e return False game_round = 0 while True: scores = get_score() scores = [] print "--------------------------- round %d -------------------------------"%game_round for host in hosts: print "---------------------------------------------------------------" host = host[:-1] if server_check(): print "Host: "+host+" seems ok" scores.append("0") else: print "Host: "+host+" seems down" scores.append("-10") game_round += 1 write_score(scores) time.sleep(sleep_time)
#docker attach check_server
#python check.py
我稍微改了一下它的check时间和flag刷新时间,因为原版两分钟一次,太快了,所以我把它改为了5分钟。具体修改方法只要将/awd-platform/check_server/gen_flag.py 的time_span 变量设置为5*60即可,也可以改成其他的,同理还有/awd-platform/flag_server/config.php 的 min_time_span变量设置为300、/awd-platform/flag.py 变量time_span设置为5*60
3.关闭环境命令:
#python stop_clean.py
四、注意事项及规则:
1.靶机端口规则:(假设服务器ip为192.168.1.1)
Team1:192.168.1.1:8801
Team2:192.168.1.1:8802
Team3:192.168.1.1:8803
……
以此类推
2.各个靶机的ssh密码可以在项目的文件夹下的pass.txt文件中,开始比赛时告知各个选手ssh密码。
SSH的端口规则为:(假设服务器ip为192.168.1.1)
Team1:192.168.1.1:2201
Team2:192.168.1.1:2202
Team3:192.168.1.1:2203
……
以此类推
3.提交flag方法:(假设服务器ip为192.168.1.1)
http://192.168.1.1:8080/flag_file.php?token=teamX&flag=xxxx
(teamX中的X为自己队伍号,flag为其他队伍的flag)
4.记分牌:查看实时分数情况,没做到实时刷新一下(假设服务器ip为192.168.1.1)
http://192.168.1.1:8080
5.攻击情况:(假设服务器ip为192.168.1.1)
http://192.168.1.1:8080/result.txt
愉快的玩耍吧
五、解决的一些问题:
在一次测试中,发现在一轮的五分钟有效时间内一直提交某个对手的正确flag可以无限加分,在审计一波代码后发现,关键点在这里
config.php:
php $team_number = 3; $user_list = []; $token_list = array(); $ip_list = array(); for ($i=1; $i <= $team_number; $i++) { array_push($user_list,'team'.$i); $token_list['team'.$i] = $i - 1; $ip_list['172.17.0.'.($i+1)] = $i - 1; } $key = '744def038f39652db118a68ab34895dc'; $time_file = './time.txt'; $min_time_span = 120; $record = './score.txt';
flag_file.php:
require 'config.php'; $now_time = time(); $flag_file = 'xxxxxxxx_flag'; function check_time($attack_uid,$victim_uid){ global $time_file; global $min_time_span; global $now_time; global $team_number; $old_times = explode('|' , file_get_contents($time_file)); //print $now_time; $id = $attack_uid * $team_number + $victim_uid; //print $old_times[$id]; if ($now_time - $old_times[$id] < $min_time_span){ die("error: submit too quick ". ($min_time_span + $old_times[$id] - $now_time). " seconds left"); }else{ return True; } }
这边的flag_file.php包含了config.php的配置,即变量$min_time_span和变量$time_file,通过$now_time记录当前时间戳,然后通过与$time_file记录的时间戳节点进行相减,如果符合小于预设的时间差(即一轮多长时间)这一条件则当前时间段无法再次提交flag。
然而 $time_file = './time.txt'; 中的time.txt是这样的
哈哈 ,为了辨别每一支队伍代表的格子,将其写为0|1|2|3|4......,然后将变量$old_times输出,经过对比后得出team对应的位置(我这里只找了三个)
此时只需要写一个脚本将五分钟为周期的时间戳更新到time.txt中即可
脚本如下,在启动docker之前五分钟运行,或者后五分钟也可以,改一下脚本内的配置即可,这个脚本是按照某一个时间整点的00 05 10 15 进行记录时间戳的,按自己需要也可以改为其他的
#!/usr/bin/env python #coding:UTF-8 import time import os print int(time.time()) Unix_time = int(time.time()) print time.ctime(Unix_time) while True: time_his = [] time_list = ["00","05","10","15","20","25","30"] for i in time_list: dt = "2019-04-28 10:"+str(i)+":00" time_his.append(dt) a = time_his[0] b = time_his[1] c = time_his[2] d = time_his[3] e = time_his[4] f = time_his[5] g = time_his[6] time_stamp = [a,b,c,d,e,f,g] for k in time_stamp: h = open("time.txt", 'w+') timeArray = time.strptime(k, "%Y-%m-%d %H:%M:%S") timestamp = time.mktime(timeArray) print (int(timestamp)) data = (int(timestamp)) separated = '|' zero = '0' print >>h,(zero),(separated),(data),(separated),(zero),(separated),(data),(separated),(zero),(separated),(zero),(separated),(data),(separated),(zero),(separated),(zero), # 0|data|0|data|0|0|data|0|0 h.close() time.sleep(300)
目前这个问题解决了,但是需要一点技巧,就是开启这个脚本的时间要把握好。多调试几次应该就差不多了。
参考:
https://mp.weixin.qq.com/s?__biz=MzU1MzE3Njg2Mw==&mid=2247486325&idx=1&sn=96c04f3609a04260eabdd187fc7c38b1&chksm=fbf79105cc8018131579ad228dbf22a33bbdf0c8c71d3b8c090583b42ea21d80de53fc1efa70&scene=27&key=593393174013ce6d958e86eb764289b105cb7cea44d471bd3f9fe1a2ed76f546343dacb9b40a352e642e425b55c2a4d9698146a114ecd9680ed3262c8f96f6a206f0c78d6818ce0028c9bc75830936f0&ascene=7&uin=NTQ5ODg5NzY1&devicetype=Windows+10&version=6206061c&lang=zh_CN&pass_ticket=s3n8uD0SG7m1vojw%2F%2BN7uxdrTxvWnumzuUe%2BTLY12QY9yFKjU7n%2FNruWi9PS1sJO&winzoom=1