I was writing some challenges for PacketWars at TROOPERS22. One was intended to be a JWT key confusion challenge where the public key from an RSA JWT should be recovered and used to sign a symmetric JWT. For that, I was searching for a library vulnerable to JWT key confusion by default and found lua-resty-jwt. The original repository by SkyLothar is not maintained and different from the library that is installed with the LuaRocks package manager. The investigated library is a fork of the original repository, maintained by cdbattags in version 0.2.3 and was downloaded more than 4.8 million times according to LuaRocks.
While looking at the source code I found a way to circumvent authentication entirely.
At Troopers 2023, we gave a talk on how to attack DHL parcel tracking information based on OSINT. Since we previously had an exemplary disclosure process about this attack with DHL, Mr. Kiehne (from DHL) joined us to provide interesting background information and insights on how they addressed our findings.
The training Software-Defined Radio applied to security assessments was held by Sébastien Dudek at Troopers21 and was remotely organized – like most other events – due to Covid-19. Once we were all caffeinated, we had an exciting journey through basically all things radio.
Attackers are everywhere. They are now on the cloud too! Attacking the most popular cloud provider – AWS, requires the knowledge of how different services are setup, what defences do we need to bypass, what service attributes can be abused, where can information be leaked, how do I escalate privileges, what about monitoring solutions that may be present in the environment and so on! We try to answer these questions in our intense, hands-on scenario driven training on attacking and subsequently defending against the attacks on AWS.
As an attacker or defender, if you have ever asked any of the following questions, this training is for you:
Is there a process to attacking the cloud or do we go after the services as and when they are discovered?
Is SSRF the only vulnerability to access the metadata service on EC2?
How do I use stolen AWS secret keys to attack further?
How do I hide cover my tracks in AWS environment?
If I can’t see a service due to security group, can I still attack it?
How do I create better wordlists to discover and exploit S3 buckets that have uncommon names?
Can I impersonate other users within AWS?
Is there a way to extract secrets from AWS Lambda?
How do I prevent credential compromise in AWS?
How can I be sure there is no attacker already within my cloud infrastructure?
How do I enumerate and move between accounts that are part of AWS organisations?
So, the burning question is: how does this affect Web and Desktop app security? If you want to find out, come to our training and you will experience this in a 100% hands-on fashion! 🙂
Our workshop “TLS in the enterprise” was held for the first time at Troopers 2018 and was our special contribution to the IT Security world to increase the usage of TLS and point out the pitfalls, when switching to TLS.
But time is changing and TLS is a kind of standard nowadays, at least when looking at HTTPS, but there are still a lot of things to do regarding other protocols like
SMTP, POP3 and IMAP
SIP and RTP
SSL based VPNs
just to name a few ;-). We will cover that in our training too, but the most important new stuff will be Post Quantum Security and how it will affect the future of encryption. We will talk about crypto algorithms and which of them can still be used in the future, we will talk about timelines and preparation (including the actual state of technology) like develop your master plan and we will try to clear up the myths regarding quantum computers to get your enterprise ready for the post quantum era :-).
Become aware that quantum computers will likely break most traditional public key crypto and every secret it protects. Examples for affected crypto: RSA, DH, ECC, ElGamal, PKI, digital certificates, digital signatures, VPNs, WiFi protection, smartcards, HSMs, crypto currencies, two factor authentication which relies on digital certificates (e.g. FIDO keys, Google security keys, etc.) and of course TLS.
And the quantum computers are not that far away, as the following timeline proves:
1998: first working quantum computer
2016: Google develops quantum computer
2017: D-Waves announces the commercial availability of the D-Wave 2000Q™ quantum computer
2017: IBM and Microsoft announces quantum computers
2018: several quantum microprocessors available
2019: likely over 100 quantum computers available
hmm, you are afraid now? No ;-)! You are curious? You got the point, it’s time to get prepared. The early bird catches the worm (which btw. is also true for getting your Troopers ticket and workshop seat 😉 ) the NSA said, and it moved to post-quantum in January 2016.
So to satisfy your curiosity, see you at our workshop “TLS in the enterprise” at Troopers 2020.
Containerization dominates the market nowadays. Fancy buzzwords like continuous integration/deployment/delivery, microservices, containers, DevOps are floating around, but what do they mean? What benefits do they offer compared to the old dogmas? You’re gonna find out in our training!
We are going to start with the basics of Docker, Containers and DevOps, but soon you’ll end up with your own applications running inside containers with the images residing in your own registry. Of course, following the microservices approach, and the second day hasn’t even started.After the fundamental topics of containerization are understood, you’re going to create and operate your own Kubernetes cluster. A lot of fun and challenging exercises lie ahead, to give you hands-on experience with all the technologies.
We at ERNW have not only security written on our banner, it is a mindset we share. Therefore, be prepared to get knee deep into security in regards of the discussed technologies. We will tackle the security aspects from the bottom-up, what Containerization tools can offer and how all these can be enforced and enhanced with Kubernetes to secure your clusters. From there on you are ready for the final challenge. You will jump into the role of an attacker who did compromise a Container in the cluster and escalate your privileges to Cluster Admin.
Attendees who absolved the training will have a solid understanding of container technology, especially with Docker and Kubernetes and of course the security challenges those technologies bring to the table.
So, if you’re up to a challenging training and want to get not only your feet wet with Docker and Kubernetes, you can reserve your spot for the training right here.
“If it’s a thing, then there’s an app for it!”…We trust mobile apps to process our bank transactions, handle our private data and set us up on romantic dates. However, few of us care to wonder,”How (in)secure can these apps be?” Well… at Troopers 20, you can learn how to answer this question yourself!
Windows 10 is one of the most commonly deployed operating systems at this time. Knowledge about its components and internal working principles is highly beneficial. Among other things, such a knowledge enables:
in-depth studies of undocumented, or poorly documented, system functionalities;
development of performant and compatible software to monitor or extend the activities of the operating system itself; and
analysis of security-related issues, such as persistent malware.
like in recent years the popular Hacking 101 workshop will take place on TROOPERS20, too! The workshop will give you an insight into the hacking techniques required for penetration testing. These techniques will cover various topics: