Usefull add-ons for Webapp Pentesting and Bug Bounty

So here is just a very short one. Always when I have to set up a new pentest machine, I have to look it up again, so here is a small list of browser addons that are usefull for webapp pentesting (using Firefox):

  • wappalyzer
  • Temp Mail
  • Hackbar Quantum
  • retire.js
  • Foxy Proxy Basic
  • shodan.io
  • Export Cookies

Book review: Real-World Bug Hunting

One of the good things about Defcon is that there is a No Starch Press store at the vendors area. 

So I bought it for the flight, but it took a bit longer until I was through the book.

The book has 20 chapters, starting with Bug Bounty Basics. The next 17 chapters go through different classes of vulnerabitlites like XSS, SQLi, memory corruption, CSRF and so on.

After an explanation of the vulnerabilty itself, real reports are also included with further hints. At the end of each chapter the reader can find useful takeaways.

The last two chapters are not about bugs, one is about finding bugs in general, including some descriptions for tactics and tools. The last chapter is about writing a good report, communication to the companies and how to deal with the different programmes, which seems very useful to me.

Real-World Bug Hunting is helping to maximaize payouts and finding more bugs. It shows up lots of attack vectors and creative way for exploing them.

The book is not for beginners. I recommend to have a look at the recommendations list, the bug bounty beginners and the penetration tester basics articles for more resources.

Real-World Bug Hunting: A Field Guide to Web Hacking
Author: Peter Yaworski
Content: A very practical guide to bug hunting and bug bounties
Career: Penetration Tester, Bug Bounty
Level: Beginner, Intermediate
Buy at Amazon U.S.
Buy at Amazon Germany

Review Threatcon & Offensive HTML, SVG, CSS & Other Browser-Evil

End of August I travelled from Germany to far away Kathmandu in Nepal for visiting threatcon and the browser security workshop by Mario Heiderich and the beautiful country. Here is a short review.

Browser Security Workshop

With the conference I booked the 2 days workshop Offensive HTML, SVG, CSS & Other Browser-Evil. The covered topics:

  • History of browser security and the browser market
  • Defense 101
  • XSS
  • URL obfuscation
  • Unicode, character sets
  • Breaking Filters (WAF)
  • IE/Edge compatibility modes
  • mXSS

The presentation includes 255 slides, so in 2 days it was not possible to cover everything, also there was no time for the hands-on parts. XSS is not the big topic anymore, but I was happy I can fresh up my knowlege and also learned some new stuff.

The Conference

The conference was one day with a single track, so contrary to Blackhat & Defcon everything was clearly arranged. On the speaker list were Mario Heiderich, Jim Manico, Georgia Weidman, Vignesh, Yogesh Ojha, Aniruddha Dolas and Prashant Tilekar, you may see some familiar names here.

Between the presentations there was lot of time for networking and discussions, with the business pass I also joint the evening event which came with great drinks & food.

For me the best at conferences, of course, is the networking part. It was a great pleasure to meet and connect with new people and friends.

When you are new to IT security I highly recommend to visit smaller and local conferences if possible, it is much easier to connect and to visit.

Thanks to the organizers of threatcon for a great event.

Visiting Nepal

After the conference I took four days for traveling and sightseeing, this is just a very small impression (I made >1000 shots). I travel a lot, and this was one of the most impressive experiences I’ve had.

More free Pentesting resources

While I wrote the articles about how to start a pentesting career I came accross more great resources that I did not mention before, so here they are. Most of it is hands-on :).

The Complete Beginner Network Penetration Testing Course for 2019

CTP/OSCE Prep – Wrapping Up Our Prep
Article with OSCE resources.
https://h0mbre.github.io/CTP_Summary/#

Web Application Exploits and Defenses
Online Webapp hacking.
https://google-gruyere.appspot.com/

XSS challenges
Online XSS challenges.
http://xss-quiz.int21h.jp/

XXE Lab
XXE Lab for downloading and hacking.
https://github.com/jbarone/xxelab

Root Me
Hacking challenges online.
https://www.root-me.org/

Cryptopals
Crypto hacking CTF.
https://cryptopals.com/

RingZer0 CTF
https://ringzer0ctf.com/challenges

Damn Vulnerable Web Application (DVWA)
Vulnerable weeb hacking VM (download).
http://www.dvwa.co.uk/

Pentesterlab
List of the free Webapp hacking excercises.
https://pentesterlab.com/exercises?dir=desc&only=free&sort=published_at

Link List with more CTFs and excercises
https://wheresmykeyboard.com/2016/07/hacking-sites-ctfs-wargames-practice-hacking-skills/

Kali Training
https://kali.training/

Vulnhub
Loads of challenges and VMs (downloads).
https://www.vulnhub.com/

Career Path Security Researcher & Bug Bounty

Security Researchers work in the field of bug bounties and exploitation, often they are independent but sometimes they also work as employees. I think that both paths are not easy, but of course it can be done. On both paths you can earn lots of $$$ but I also heard of people who came out disappointed. Some people starting this as a side job and then go independent. If you don’t know some basics look here and here.

The reason why I put both paths in one post is that for me you need a similar mindset. You have to be highly motivated, need to learn a lot before you gain some success (well, at least for most people) and if you go independent you work on your own. For both you need a plan or tactics, you can’t just start hacking and hope to find something.

When you want to participate in bug bounties normally you are using platforms like hackerone or bugcrowd, but lot’s of companies have their own bounty programs. Since most of these programs are public this makes starting easy.

On the other hand, when you want to start as a researcher and do exploit development, you also have some public resources like ZDI or zerodium. But what is more important than in bug bounty, is networking with other researchers and companies. One way is to go at conferences and trainings, have a look at the links section of this article.

Both paths might take months or even years until you get into it, so this article can only be a starting point that I hope is helpful.

Links

Bug Bounty

Blog Articles, programs

LevelUp 0x02 – Bug Bounty Hunter Methodology v3

Advanced Web Attacks and Exploitation (AWAE)

Probably interesting for both paths, but web hacking is more bug bounty for me…
https://www.offensive-security.com/information-security-training/advanced-web-attack-and-exploitation/

Exploiting

35C3 – From Zero to Zero Day

The Exploit tutorials from corelan

https://www.corelan.be/index.php/articles/
That said, I can highly recommend the trainings that you can book at several conferences:
https://www.corelan-training.com/

OSCE- Cracking the Perimeter (CTP)

Also mentioned here before, the Offensive Security course and certification:
https://www.offensive-security.com/information-security-training/cracking-the-perimeter/

OSEE – Advanced Windows Exploitation (AWE)

I also heard great things about the AWE (OSEE) for more in depth exploitation, but I don’t have personal experience here.

Even more links:
https://www.zerodayinitiative.com/
https://zerodium.com/
https://googleprojectzero.blogspot.com/
and especially this article from project zero:
https://googleprojectzero.blogspot.com/p/working-at-project-zero.html

Conferences

As said before, learning new things and networking is really important, so here are some conferences that seem good, you should also consider to take some trainings:

Books

Hands-On Bug Hunting for Penetration Testers
Author: Joseph Marshall
Content: Go through common bugs in Webapps and introduction to bug bounties
Career: Penetration Tester, Bug Bounty
Level: Beginner
Buy at Amazon U.S.
Buy at Amazon Germany

The Shellcoder’s Handbook
Authors: Chris Anley, John Heasman, Felix “FX” Lindner, Gerardo Richarte
Content: Exploiting security holes for Windows, Solaris, MacOSX, Cisco. Although from 2007 still worth reading.
Career: Penetration Tester, Exploiter
Level: Intermediate, Experts
Buy at Amazon U.S.
Buy at Amazon Germany

Hacking: The Art of Exploitation
Author: Jon Erickson
Content: Goes from the first steps in Bash and C to in depth exploitation and debugging on Linux.
Career: Penetration Tester, Exploit Developer
Level: Beginner, Intermediate, Expert
Buy at Amazon U.S.
Buy at Amazon Germany

And here is a great free book:
Modern Windows Exploit Development
http://docs.alexomar.com/biblioteca/Modern%20Windows%20Exploit%20Development.pdf

Book Review Hands-on Bug Hunting for Penetration Testers

Hands-On Bug Hunting for Penetration Testers
Author: Joseph Marshall
Content: Go through common bugs in Webapps and introduction to bug bounties
Career: Penetration Tester, Bug Bounty
Level: Beginner
Buy at Amazon U.S.
Buy at Amazon Germany

The main audience of Bug Hunting for Penetration Testers are coders and penetration testers interested in bug bounties. The book goes through bug bounty programs, penetration testing and the usual web security vulnerabilites like XSS, SQL injections, XEE and so on.

As the title sais, the book was written for people with prior knowledge in penetration testing. So the vulnerabtilies are not explained in depth, but nevertheless it is suitable also for beginners if they are willing to go deeper later and using other sources, after each chapter there are some recommendations for it.

For me the perspective as a bug hunter is pretty interesting, and the book is going into automatisation of some tasks and which vulnerabilites are usually interesting for bug bounty programs and how to report them. For getting an impression about the coding have a look here, unfortunatelly the code base is for python 2.7 and not python 3. The books is also informing about information gathering and bug bounty strategies. What I also like are the end-to-end examples, from finding and exploiting a vulnerability to a short example report. Later reporting is explained into more detail.

If you are interested in Bug Bounty programs you should have a look into this book.

Review Portswigger Web Security Academy

Link: Web Security Academy
Content: Teaches the basics of Web Application Security, so far SQL Injection, XSS, OS command injection and File Path traversal. Comes with small labs.
Career: Penetration Tester but I recommend it also for everyone interested in security
Level: Beginner
Price: Free

Web Security Academy

The description from the originial website:
Welcome to the Web Security Academy. This is a brand new learning resource providing free training on web security vulnerabilities, techniques for finding and exploiting bugs, and defensive measures for avoiding them.
The Web Security Academy contains high-quality learning materials, interactive vulnerability labs, and video tutorials. You can learn at your own pace, wherever and whenever suits you. Best of all, everything is free!

For tracking and doing the labs you need to create an accout.

I found the explanations and the labs very suitable for beginners and I think it is a great starting point for web application security.

The team behind it is the same that is behind the Burpsuite and the famous Web Application Hackers Handbook (consider buying it if you want to go deeper into the topic):

The Web Application Hackers Handbook
Authors: Daffy Stuttard, Marcus Pinto
Content: The standard book about hacking Web Applications, goes into depth about the most important topics. Authors also created the BurpSuit.
Career: Penetration Tester
Level: Good for beginners, but also useful for experienced penetration testers
Buy at Amazon U.S.
Buy at Amazon Germany