Monthly Archives March 2015

After a challenging enough "Warm Up" challenge at BCTF2015 which involved cracking a poorly thought out RSA encryption, the next challenge we decided to tackle was the weak_enc challenge worth only 200 points. I don't normally do crypto but the warmup challenge really got me in the mood so, here we go! The challenge was fairly self explanatory thankfully, a…

Our first time doing Vancouver BSides which was an event said to be aimed at beginners and students. I was expecting a fun and medium challenge but I found it to be trickier than expected and where I knew the general direction of the solutions for a number of problems I didn't get enough time to focus on them during…

For this years CodeGate teams faced some ingenious challenges. Today I will write up the first challenge we solved which seems to have also been first for many of the teams. This challenge is Systemshock. □ description ========================================== Login : ssh systemshock@54.65.236.17 Password : systemshocked ========================================== Upon logging in you are placed into the systemshock user home path with the…

This challenge in the forensics genre had only the following as the clue: It seems that my files are gone! http://public.givemesecurity.info/gone.img.tar.bz2 Upon downloading and decompressing the gone.img.tar.bz2 file you find a Linux EXT4 filesystem which you can mount.  root@mankrik:~/opentoall/gone/tmp# file 1fdb86c25131bb3aa247bada29b29115.img 1fdb86c25131bb3aa247bada29b29115.img: Linux rev 1.0 ext4 filesystem data, UUID=1385df22-b2ce-4b4f-858e-79ae1932ca1a (extents) (huge files) However upon mounting the filesystem you find it…

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