The server welcomed us with the following message: Here we use a well-known cryptosystem, which introduced in late 90s as a part...

Three weeks ago, the Dragon Sector team represented by j00ru , valis , redford , mak , tkd and q3k took part in the onsite finals of the ...

Because you guys found this keygen-me very hard and interesting (thanks!) during the game we've decided to publish the sources of re300 ...

kpop (web200) We were given the source files of a service used to archive information about our favorite songs - after some quick skimmi...

Two weeks ago, I participated in Plaid CTF with the team, solving several interesting tasks mostly but not solely related to low-level expl...

Without further ado: http://ctf.dragonsector.pl/ . The teaser will start on the 26 th of April, 9:00 A.M. CEST (GMT+2) - for other tim...

Looking at the binary for the first time we can say that this challenge is a 64bit ELF binary that does something related with ptrace. Becau...