The event of the events is getting closer and again, we are very optimistic to have a lot of awesome trainings, talks, evening events, and discussions. But we again will also have some “features” and gimmicks for those of you who would like to play with new, old, or just interesting technologies. As you might remember, since some years one of these features is and again will be our own GSM Network. As we are improving our setup from year to year, this time we’d like to give you the chance to actively participate with ideas and your own services.
Continue readingHendrik Schmidt
TelcoSecDay 2017 – 2nd Round of Talks
Hello and a Happy new Year!
There are only two and a half months left, so I’d like to publish the next two talks for TelcoSecDay 2017, taking place at 21st of March in Heidelberg. Both talks are about the security of an upcoming technology which importance will raise in near future: 5G Networks.
One of the talks will be from an attacker’s point of view, highlighting weaknesses of 2G/3G/4G networks and what we have to fix in 5G, and the other one will give us insights into current developments of the 3GPP standardization group.
Continue readingTelcoSecDay 2017 – First Talks Published
Even if the CFP for TelcoSecDay 2017 is officially closed, I am still getting mails in. First of all: thank you for all your great feedback! As the TelcoSecDay is a complimentary and non-public event with highly specialized topics, it only works by sharing knowledge with each other. But please keep in mind that the speaker-slots are limited and I have to make a decision at some point of time.
Anyhow, I am looking forward for a great event and I am proud to publish the first accepted talks:
TelcoSecDay 2017 – CFP Opens
For the 6th year in a row, the next TelcoSecDay will take place in 2017 on March 21th. Again, it will be held one day before Troopers IT-Security Conference as an invitation-only event. For those of you who don’t know the TSD, it is organized by ERNW and is aimed at bringing researchers and people from the telecommunication industry together to discuss about current security weaknesses, challenges and strategies. To do so, various topics will be presented during the talks and there will surely be enough time to follow-up in extensive discussions.
To give you an idea, here’s the TSD 2016 agenda, and here’s the one of 2015.
Attacking BaseStations @Defcon24
Hello Guys,
back from my vacation I’d like to give you some impressions about Defcon 24 and our talk “Attacking BaseStations”. Defcon itself had a couple of great talks but was a very crowded location. Anyhow, we had a couple of great discussions with the people before and after our talk.
The talk “Attacking BaseStations” focussed on attack vectors we simulated in our lab. Besides attacking a BaseStation via Radio interface, in this talk we focussed on local and remote interfaces as introduced in “LTE vs. Darwin”. As target of evaluation one of our eNodeB’s came into play, which we purchased on the Internet. Anyhow, the talk covered the following attack scenarios:
Continue readingVoLTE Security Analysis, part 2
In our talk IMSEcure – Attacking VoLTE Brian and me presented some theoretical and practical attacks against IP Multimedia Subsystems (IMS). Some of the attacks already have been introduced in a former blogpost and Ahmad continued with a deeper analysis of the Flooding and targeted DoS scenario. But still, there are some open topics I’d like to continue with now. The methods I am demonstrating here also help to get a better understanding of VoLTE/IMS and how it is implemented on modern smartphones.
Continue readingArea41 Conference 2016
Last Friday, Brian and I were at the Area41 Security Conference. The conference is a branch of Defcon conference and is more or less a small conference of the Swiss hacker community. Being in a “rock music club”, the speakers presented on a stage where usually the rock stars are performing – which gives the conference a very special flair and an interesting atmosphere. We’ve been at the conference to present our research about VoLTE technology including some attack scenarios we’ve evaluated in the past. More on this later, let’s first talk about the conference itself.
Continue readingThe ULIN Story
Some of you might have noticed the articles, or the leaked manual itself, about a tool called ULIN. ULIN is a “bleeding-edge spy tool” for mobile communication networks. According to the manual, it is aimed to be a surveillance software for agencies (or others with enough money) for tracking and intercepting the Voice Calls and SMS of arbitrary phones. They call this “remote recording and geolocation of mobile handsets using 2G/3G/4G networks”.
Continue readingSome Notes on Utilizing Telco Networks for Penetration Tests
After a couple of years in pentesting Telco Networks, I’d like to give you some insight into our pentesting methodology and setup we are using for testing “Mobile and Telecommunication Devices”. I am not talking about pentesting professional providers’ equipment (as in previous blogposts), it is about pentesting of devices that have a modem in place like a lot of IoT devices (you know about the fridge having a GSM Modem, right?) do.
Continue readingTSD 2016 – Follow Up
Thanks again for all the great talks and fruitful discussions @TSD 2016! I hope everybody had a safe trip home and enjoyed Troopers as we did. In the meantime I contacted all speakers to talk about publication of their slidesets. Some of them agreed (or already published them on their own) so I’d like to share these with you:
Alexandre De Oliveira – Assaulting IPX Diameter roaming network
Siddharth Rao – The known unknowns of SS7 and beyond.
Joao Collier de Mendonca – “rucki zucki” scanning tool
Harald Welte – Open Source Network Elements for Security Analysis of Mobile Networks
Ravi & Altaf Shaik – Don’t connect to my 4G base station: investigating info leaks in 4G basebands