We recently ran our Black Hat challenge where the ultimate prize was a seat on one of our training courses at Black Hat this year. This would allow the winner to attend any one of the following:
Simply trying out this feature and viewing how it functions. Viewing the feed tester result, we noticed that the contents of the XML formatted RSS feed were echoed and it became clear that this may be vulnerable to XXE. The first step would be to try a simple XML payload such as:
It looks like we have some more XML being submitted.. Again we tried XXE and found that using "file://" in our payload created an error. There were ways around this, however the returned data would be truncated and we would not be able to see the full contents of flag2.txt... When stuck with XXE and not being able to see the result (or complete result) there is always the chance that we can get the data out via the network. To do this we needed to generate a payload that would allow us to fetch an external DTD and then "submit" the contents of our target file to a server under our control. Our payload on our server looked like this:
As soon as the XML decoder parsed our malicious payload, we would receive the base64 encoded contents on our server:
Now it was a simple matter of decoding the payload and we had the second flag. This was not the only way to get flag 2! It was the most "fun" way of doing it though and used a really handy method. Remember it for your next pentest...
The two runners up who both can claim one of our awesome 2014 t-shirts:
Vitaly aka @send9
Sash aka @secdefect
Starting-point: Read the contents of /home/spuser/flag1.txt
Once you've completed the challenge, email us with a screenshot of your victory and a short overview of how you did it.
The prize: The winner of this challenge will be offered a free seat on any one of the SensePost training courses at Black Hat 2014.
It's almost Black Hat time again and as always SensePost will be presenting numerous Hacking by Numbers training course, which we've rewritten this year. For more information on the training courses on offer at Black Hat this year, check out:
The course has undergone the full reloaded treatment, with our trainers pouring new tips, tricks and skills into the course, along with incorporating feedback from previous students.
The training introduces all the core skills required to test applications across the major mobile platforms, particularly:
For a full break-down of the course structure check-out our BlackHat training page (https://www.blackhat.com/us-14/training/hacking-by-numbers-reloaded-mobile-bootcamp.html)
Your trainers will be Etienne (@kamp_staaldraad) and Jurgens, both crazy about mobile security and have executed numerous killshots on all the major mobile platforms.
- Etienne and Jurgens -
Why Infrastructure Hacking Isn't Dead
If you work in IT Security you may have heard people utter the phrase,
“Infrastructure hacking is dead!”
We hear this all the time but in all honesty, our everyday experience of working in the industry tells a completely different story.
With this in mind we've decided to factor out our “infrastructure related h@x0ry” from our Bootcamp Course and create a brand spanking new one, completely dedicated to all things ‘infrastructure'.
What You'll Learn
We've re-loaded this course to not only reinforce basic footprinting methodologies - which to be honest, are essential for target acquisition - but to also enable you to exploit common, real-world vulnerabilities.
But that's not all.
We've also highlighted methods for compromising Microsoft Active Directory infrastructures - something that's typical for corporate environments. The way in which we approach this is thorough, effective and shows you how to become DA without necessarily pulling all of your hair out.
A complete company takeover is really just a matter of time.
Get Hands-On Experience
As with all SensePost training courses, we don't just want you to sit there and watch us talk for a few days. Where's the fun in that and how on earth will you get real, tangible experience if you're just sat in a chair?
Not only will we all be doing practicals at the end of each topic, we've also created a brilliant culmination exercise:
“You'll need to compromise a company via the Internet and steal as much data as possible!”
The Bottom Line
The brand new Bootcamp Reloaded Infrastructure will provide you with a thorough introduction to real world hacking of corporate environments. You'll learn everything you need to successfully compromise most corporate networks out there.
For more information on our training offering, head over to here.
BlackOps you say?
At SensePost we have a range of courses in our Hacking by Numbers reloaded series. We feel each one has its own special place. I've delivered almost all the courses over the years, but my somewhat biased favourite is our recently updated BlackOps Edition. Myself (Glenn) and Vlad will be presenting this course at BlackHat Vegas in August.
Where Does BlackOps fit in?
Our introductory courses (Cadet and Bootcamp) are meant to establish the hacker mindset - they introduce the student to psychological aspects of an attacker, and build on that to demonstrate real world capability. BlackOps is designed for students who understand the basics of hacking (either from attending Bootcamp/Cadet, or from real-world experience) and want to acquire deeper knowledge of techniques we use. We built the course based on our 13 years of experience of performing security assessments.
But really, what's the course about?
This course is aimed at those who've been performing penetration testing for a while, but still feel a bit lost when they've compromised a host, or network and want to know the best possible approach to take for the next step. All of the labs in this course come from real life assessments, with the final lab being a full-blown social engineering attack against an admin with pivoting, exfiltration and the works. Specifically, we're going to cover the following topics:
1. Advanced Targeting
A hacker who can quickly and effectively identify targets is a successful attacker. We'll be looking at non-standard techniques for identifying targets, such as mDNS, IPv6, and other rapid reconnaissance techniques.
You may know how to roll a generic metasploit payload, but we'll be looking at some lesser utilised approaches to compromise. From WPAD injection, to rogue routers in IPv6, to good old smbrelay attacks, to crypto attacks against obfuscated credentials.
4. Privilege Escalation
So you've gotten a shell, now what?
Following on somewhat succinctly, how do you elevate your privileges after compromising a box? Everyone wants to be root or enterprise admin, but how do you go about this without raising the alarm and keeping your shell?
Don't underestimate the importance, or intricacies of this topic. Once you've compromised a lowly network edge server, or the receptionist PC, how do you bounce through that box to get to the good stuff, three DMZs deep? We'll show you how. A must-have for every hackers box of tricks.
6. Open Source Intelligence (OSINT)
Finding out as much as possible about an adversary from publicly available information is one of the most important steps of any hack. This relates to both infrastructure (domains, IP ranges, etc) and personnel. In this section we'll focus mainly on the latter. How can you find out more information about the girlfriend of the son of your target company's CEO? We'll show you. Why would you want to? A good social engineering attack abuses trust relationships, so nothing makes a dad click on that dodgy looking email if it was from his son.
7. HIPS Evasion
Hackers don't like getting caught. So we'll teach you how to evade 100% (yes, 100%) of anti-virus products on the market, as well as hiding from smart traffic filtering devices. Bring your own ninja outfits, we'll provide the skill-set.
8. Client Side Attacks
The weakest layer of the OSI stack - the human. Trust us, if you really want to compromise an organization, going after the receptionist's outdated Windows box is the first stepping stone. After all, why wouldn't she open an email that appears to come from her boss, and has a harmless .xls attached?
Each module of the above modules has a theory section followed by a practical lab to allow you to practise your newly acquired skills. The course finishes with a Capture-the-Flag, with a grand prize. Honestly, this final lab is enjoyable and guaranteed to bring a smile on your face whilst doing it.
We're looking forward to sharing out knowledge, experience, and passion for security with you. Please sign up here.
-Glenn & Vlad