Please note: This is the 2017 edition of the Hogwarts Library ebook, featuring bespoke cover artwork from Olly Moss and a new foreword from J.K. Rowling. Thanks to r_73en for putting it together and sharing as well as  @g0tmi1k and the @vulnhub team for continuing to maintain this community. Sure enough I was able to use this technique to gain command execution: I uploaded a PHP reverse shell but could not get it working (I’d come to find out why later on). Browsing to the web application I was greeted with a page touting the new Rashomon IPS service which would prove to be the bane of my existence for a few days. As always, I started out with a super stealthy nmap scan 😉 . I attempt to upload a PHP reverse shell. We would like to show you a description here but the site won’t allow us. This page shows that the “lang” parameter gets set as a cookie. You can grab a copy for yourself here: https://www.vulnhub.com/entry/violator-1,153/. The package libssl1.0.0 was dropped from Ubuntu after 18.04. Once the VM boots select “rescue mode” or “rescue a broken system” from the main menu. There are many ways to do this, the way I did it worked but of course there are other options. Maybe I can use this to pull down something interesting? I went back and made a word list from everything I had seen so far. Take Shutter for example. This may mean that the package is missing, has been obsoleted, or is only available from another source. I compiled it locally and downloaded it using Curl thanks to knightmare’s trolling. I extracted the flag.txt file and had the next flag as well as what appeared to be 2 passwords. “those blocks chain together”  (cipher block chaining); The Spanish swear word was likely a key “supercalifragilisticoespialidoso”; An allusion to rockyou (possibly rockyou.txt for brute forcing the passphrase); and. The JavaScript file from earlier gave us a user name and the login prompt states “FBI Personnel” so I followed the username format and configured Intruder to attempt a brute-force with the user ‘carl.hanratty’. Interesting, we have port 80 and 3306 (MySQL) open. I spent a great deal of time enumerating the file system. I attempt to connect anonymously and get rejected so let’s try out this exploit.  If successful, I will be able to use the mod_copy module SITE CPFR/SITE CPTO commands to read/write files remotely and unauthenticated. I moved over to the /tmp directory, created a file named ‘cat’ with /bin/sh as the contents and modified it to be executable. The next step was running the binary to call my fake ‘cat’ binary. We would like to show you a description here but the site won’t allow us. The hidden directory ‘basildon’ in the root directory contains a file, crocs.rar. Draft submission. Checking it out gives us a hint to another directory: I move onward to the ‘client’ directory and am presented with a login page for the Very Secure Bank. Oftentimes when creating a VM we are left with a great deal of extra/wasted space and a bloated .ova file upon export. 326568 (England/Wales) and SC039730 (Scotland). Meaning we can create a file in ANY directory (even those owned by root). I create my own version of the spin binary which allows me to run command as root like so…. The ‘promisedyouamiracle’ image appeared to have an interested base64 encoded string in the exif data. Knightmare provided me with the following hints to get going (I’ve also learned by now to set the HDD on all his VMs to non-persistent 🙂 ) : As always, we start off with a quick nmap scan. I would have tried combos such as eric.burdon, eburdon etc but ‘eric@example.com’ seemed to be nudging me in the right direction. The .notes file refers to the privilege escalation explanations, one of them being backwards (more on that later) as well as a hint at how to open Eric’s backdoor and a mention of Billy and Veronica’s account passwords. The readme has a note that VMware users may have issues. Now I was in as theproclaimers, what was the next step? This tells us that hosts will check into the puppetmaster every 10 minutes for anything new, like abused modules :). Tried and failed. The following command will open the truecrypt container (after we enter the password). Bi raunchy anal enjoyment in three-some xxx games. Now, the binary was meant to call ‘cat’ but not with the absolute path so I could not use a symlink. I also took the time to read the upload.php page. I was able to obtain root privileges using a kernel exploit, which is my least favorite method but still got the job done. Potato Head! Next we have to re-install the GRUB boot loader. However, listening carefully he actually says “67” not 1467. Unique and kept me on my toes. rev 2021.2.10.38546, The best answers are voted up and rise to the top. The readme has a note that VMware users may have issues. I created a tiny shell script with the following PHP command and hosted it on my local Apache server: I then executed the following two commands to upload the shell script to /tmp and execute it: The usual enumeration turned up an interesting SUID binary in /opt. Google showed that the ‘fastest man alive’ clue was potentially talking about the Flash, also known as Barry Allen. I was fully expecting another binary challenge to grab the flag, but alas it was just a text file. To check if libssl0.9.8 has been renamed in Ubuntu 20.04 run … There is a lot of information here but the most important being in messages 2 and 3. Standard ports 22 and 80 open with a proxy service on port 8080. The string ‘Rkfpuzrahngvat’ obtained from the telnet connection earlier was interesting and appeared to be some sort of encrypted or ciphered text. I decoded the base64 in Burp which gave me the MD5 of ‘personnel’. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'python3-pip' has no installation candidate The bug was reported in the Debian bugs list. Now we have another image file which I pull down locally and run steghide against. Now we just su to root and grab our prize: Google translate told me the flag text translates to “Congratulations, now the report begins.”. Next, click back to the SDA view, right click on SDA5 and choose copy then click back to the SDB and select paste inside the blue box which is your extended partition. It only takes a minute to sign up. A while back knightmare asked me to test his boot2root challenge named Violator. Having chatted quite a bit and debugging issues on other VMs I had already picked up several colorful Scottish expressions but boy was I in for a ride! Once open, we can mount the truecrypt container at a mountpoint of our choosing. More on that later. I next turned my attention to the ‘p’ parameter to see if I could get something going. Flag#3 – “During his Travels Frank has Been Known to Intercept Traffic” Digging around for quite some time led me back to the same JavaScript file with some more interesting comments. Changing my path to just “.” meant that if I would be able to run the msgmike binary by just typing out the absolute path (/home/kane/msgmike). If we type a ; after the ‘Message for root:’ prompt we can redirect output to the command of our choice. Now, if I just ran the ‘cat’ command it would run /bin/sh. Hmm, a password protected rar containing an image file. A new VM was released on Vulnhub this week. Now lets find that code! The ebd.txt file stated that the backdoor was closed, more on that later. We would like to show you a description here but the site won’t allow us. Lucky for us he was gracious enough to give up the final flag without a fight. E: Unable to locate package python-pip E: Package ‘python-dev’ has no installation candidate And the MySQL credentials in cleartext in the config.php file: Enjoyable VM with a privilege escalation method I hadn’t seen on Vulhub yet. This was a fun challenge and I got to play around with forensics tools a bit. I attempted to carve it up for a while and didn’t get anywhere. I had already checked out every image though! None of the privilege escalation exploits alluded to in the FTP directory worked nor was I was to guess billy’s password. Re-export the .ova file and it should be considerably smaller. Next we will want to add a second hard drive to the VM (in this case I added a 10GB hard drive because I knew the filesystem of the VM would fit). “Mr. There are several ways to get a shell but this is what I tried after trying to obtain a reverse shell with mknod, netcat and other methods did not work. I attempted to grab /etc/shadow but was denied. When I retire, should I really pull money out of my brokerage account first when all my investments are long term? As always, we start off with a super stealthy nmap scan. Taking a look at the list of users I decided to Google for who cpgrogran could be. I pulled down the image and checked it with exiftool but did not find any hidden treasures. Should I use DATE or VARCHAR in storing dates in MySQL? Package firmware-b43-lpphy-installer is not available, but is referred to by another package. Throwing the request to Burp repeater got me my first bit of data. While I tried to achieve this with some crazy Burp rules (unsuccessfully) @GKNSB whipped up this awesome custom SQLmap tamper script which worked flawlessly. As always thank you to @g0tmi1k for hosting these challenges and maintaining Vulnhub. The password that worked was actually ‘secret’ not ‘secrets’. List of Amc - Free ebook download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read book online for free. I use the built-in meterpreter portfwd command to set up the tcp relay. Thanks to knightmare for putting this challenge together as well as @g0tmi1k and the @vulnhub team for continuing to maintain this community. After some considering flopping around the following ran for me and gave a hit on my listener. Turning to this great reverse shell cheat sheet I decided to use the trust mknod technique to fire myself a reverse shell. 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