Squareroots hacking the Himalaya

November 4, 2014

Himalaya, 24th of October 2014 We are in one of the world’s most targeted areas when it comes to cyber attacks: Dharamsala, India, HQ of the Tibetan Exile Government is one of the main targets of Chinese hackers. Here, over 70 hackers from all over the world met for the hillhacks hacking conference (hillhacks.in). One […]


CTF-Workshop Oktober 2014

September 5, 2014

This page is intentionally left german. Nach den letzten erfolgreichen Workshops, für die wir viel positives Feedback bekommen haben, wollen wir auch im kommenden Wintersemester wieder einen Kompakt-Workshop zum Thema Hacking und CTF-Wettbewerbe veranstalten. Der Termin für diesen Workshop ist das Wochenende vom 10. bis 12. Oktober. Wir, das sind die squareroots, das 2006 gegründete […]


ASIS CTF 2014: Blocks (Stego 100)

May 16, 2014

This challenge comes with an 361x361px large image—that’s 19×19 squares of 19x19px each. Every square is either black or white. After analyzing the alpha-planes, a hidden pattern can be found in Alpha plane 0. This second pattern contains 19×19 squares of 1x1px. For the next step we scaled down the first image to match the […]


ASIS CTF 2014: Random Image

May 11, 2014

This crypto-challenge was appointed with 150 points. A very nice task – kudos to the guys from ASIS for organizing the ctf. About the task: when downloading and unziping the file you’ll get two things: A picture enc.png A python script color-crypto.py The image only contains random noise or at least does not resemble anything. […]


VolgaCTF 2014 Writeup: crypto100

April 2, 2014

In this task, we have got a ciphertext and an oracle that we can use to encrypt data. Looking at the ciphertext we can see that is a big big number. Time to test the oracle: connect to the server and we’re greeted with “enter your text”. After entering some text, the ciphertext is diplayed […]


Artikel im Mannheimer Morgen

October 12, 2013

Nach einem Interview mit dem Mannheimer Morgen ist ein Artikel über die squareroots nun online abrufbar: http://www.morgenweb.de/mannheim/mannheim-stadt/kampf-um-virtuelle-fahnen-1.1239405    


Nächster CTF-Workshop vom 22. bis 24. Februar

January 25, 2013

This page intentionally left german. UPDATE 2: Da wir bereits unser hartes Limit für den Workshop erreicht haben, werden wir aller Wahrscheinlichkeit nach  definitiv einen zweiten Termin anbieten. Nach unserem aktuellen Plan wird dieser Dieser wird 2 Wochen nach dem Erst-Termin sein, also vom 8.3. bis 10.3.. Wer Interesse an der Teilnahme zu diesem Termin hat, […]


Workshops Spring Term 2011 – update

March 8, 2011

We recognised a small mistake in our lower contribution and, partly, in e-mails. Due to scheduling conflicts, the first workshop will not take place on Thursday but instead on: Wednesday, 03/09/2011 The remaining information is still valid. In general, as in recent years: We will give a short introduction which is immediately followed by exercises. […]


Troopers 2011 & PacketWars™

March 7, 2011

Since we scored second during last year’s PacketWars™ challenge on Troopers, we are invited to compete again. Troopers is an IT-security conference which is hosted every year by the company ERNW GmbH at PMA in Heidelberg. During this conference, a so called PacketWars takes place. This kind of IT-security contests is fundamentally different from CTF contests which […]


Workshops Spring Term 2011

February 14, 2011

As every spring term, the squareroots are organizing a series of security related workshops. These workshops deal with all kind of IT security related topics like crypto, network security and webhacking. Since we want to encourage all students of the University of Mannheim to participate, no prior “hacking knowledge” is necessary. Everyone who is interested […]