Vulnhub之DC-1渗透测试

本是古典何须时尚 2023-10-06 17:14 25阅读 0赞

#### 目录 ####

*  1、靶机概述
 *  2、信息收集
 *  3、获取shell
 *  4、提权

## 1、靶机概述 ##

DESCRIPTION  
DC-1 is a purposely built vulnerable lab for the purpose of gaining experience in the world of penetration testing.

It was designed to be a challenge for beginners, but just how easy it is will depend on your skills and knowledge, and your ability to learn.

To successfully complete this challenge, you will require Linux skills, familiarity with the Linux command line and experience with basic penetration testing tools, such as the tools that can be found on Kali Linux, or Parrot Security OS.

There are multiple ways of gaining root, however, I have included some flags which contain clues for beginners.

There are five flags in total, but the ultimate goal is to find and read the flag in root’s home directory. You don’t even need to be root to do this, however, you will require root privileges.

Depending on your skill level, you may be able to skip finding most of these flags and go straight for root.

Beginners may encounter challenges that they have never come across previously, but a Google search should be all that is required to obtain the information required to complete this challenge.  
链接: [靶机地址][Link 1].  
Kali：192.168.29.131  
靶机：192.168.29.136

## 2、信息收集 ##

扫描靶机IP地址  
![在这里插入图片描述][20210407164446518.png]  
继续扫描靶机开启的端口和服务，可知靶机开启了22、80、111、56999端口  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70]  
页面访问80端口，后端是以drupal为框架的站点。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 1]  
页面点一点，没发现存在弱口令、sql注入、信息泄露等的漏洞。  
msf中搜索drupal是否存在漏洞  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 2]  
这里使用exploit/unix/webapp/drupal\_drupalgeddon2注入漏洞

## 3、获取shell ##

设置目标地址192.168.29.136，目标端口80  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 3]  
run之后，与靶机建立会话  
![在这里插入图片描述][20210407171148913.png]  
此时的session非标准shell，所以我们需要得到一个交互式的shell，执行命令`python -c 'import pty;pty.spawn("/bin/bash")'`，得到一个标准shell  
![在这里插入图片描述][2021040717143117.png]

## 4、提权 ##

发现flag1  
![在这里插入图片描述][20210407172738599.png]  
flag1提示我们寻找配置文件  
![在这里插入图片描述][2021040717284960.png]  
在/var/www/sites/default目录下找到settings.php，打开找到flag2和数据库用户名和密码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 4]  
登录数据库  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 6]  
查看users表内容，密码是被加密的。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 7]  
查询drupal版本  
![在这里插入图片描述][20210407180601554.png]  
使用searchsploit搜索drupal有关的漏洞  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 8]  
可以利用添加管理员用户或者重置管理员密码。

方法一：添加一个具有admin权限的用户admin1,密码admin1`python /usr/share/exploitdb/exploits/php/webapps/34992.py -t http://192.168.29.136 -u admin1 -p admin1`  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 9]  
登录后台，登录成功。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 10]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 11]  
方法二：重置admin用户密码。  
/var/www/scripts/password-hash.sh文件是对数据库用户密码进行加密的文件。  
生成123456的密文  
![在这里插入图片描述][20210408180416906.png]  
重连数据库，然后更新admin用户密码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 12]  
使用账户名admin 密码123456登录后台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 13]  
点击Dashboard找到flag3  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 14]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 15]  
flag3提示用find来执行命令  
在/home/flag4目录下找flag4  
![在这里插入图片描述][20210408183649351.png]

下一步，查找具有suid权限位的命令`find / -perm -u=s -type f 2>/dev/null`或者用`find / -perm -4000`  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 16]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 17]  
发现find命令就具有root权限。

下面获取root权限  
![在这里插入图片描述][20210408183316623.png]  
在/root目录下找到flag5  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d1bzE1ODkwMDI1MDE5_size_16_color_FFFFFF_t_70 18]

[Link 1]: https://www.vulnhub.com/entry/dc-1,292/
[20210407164446518.png]: https://img-blog.csdnimg.cn/20210407164446518.png
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