Who is behind it?

The Pwn2Win CTF is being organized by members from 'Epic Leet Team', a brazilian CTF team.


10/20/2017 (friday), to be started at 13:37 (UTC -3), for 48 hours straight.

Sign in:

Registration is open here. This year we'll be using a fully auditable platform based on Non-interactive Zero Knowledge (NIZK) proofs. All teams have a copy of the database and it is possible to independently audit submitted flags and scoreboard. More information about the platform you can see on the published paper: https://arxiv.org/abs/1708.05844.


Top 1: 1000.00 BRL converted to BTC  + Certificates
Top 2 and 3: Certificates

The personalized certificates are just like "medals" from the event, something that you will use to testify your participation and Top 3 in this hardcore competition.


1) In order to receive the prizes, The Winning Team have to deliver at least 10 write-ups describing complex challenges of their choice;
2) The prizes may be changed without warning (ironic, no?);
3) The certificates will be made at least a week after the event and only to members of winning teams;
4) Your team must provide a Bitcoin address if you are not playing 4fun. Read more at https://bitcoin.org/en/how-functions. It will be required after the CTF ends, and if it not sent within 48 hours, the prize will be donated to the Barreto's Cancer Hospital (Hospital de Câncer de Barretos). 


Let's start with the rules - specifically what you and your team CANNOT do. :)

1 - It's strictly forbidden to perform any kind of Denial of Service Attack (DoS/DDoS) against the servers or the competition's infrastructure;
2 - Do NOT try to use Brute Force on the flag submission system because the flags are not possible to guess;
3 - Do NOT try to exchange flags or write-ups during the competition;
4 - Do NOT share recent discoveries related to challenges publicly on IRC channels, nor in any other way with contestants of other teams;

Ok, and now, for the more informative rules...

5 - Our official channel is the #TecLand on the Freenode (irc.freenode.net), and it's essential that all players stay there during the competition in case there are important announcements.
6 - Clues will be given in a direct or indirect form in our IRC channel, stay alert! :)
7 - The flag pattern will be as follows: CTF-BR{flag_here};
8 - The competition will last for 48 hours in a row, no breaks;
9 - The teams may have as many members as they want;
10 - Any kind of violation of these rules will mean immediate disqualification of the team;
11 - Most important rule: Have fun and Learn a lot! :)


Our judges will be the operators in the #TecLand channel (Freenode). Any Doubts, talk to them.
Like in the second edition,  we'll do a Thematic CTF. Every challenge context will revolve around a ficticional story. We'll have the Attack Step, which is the largest and more complex challenge, and consequently with the biggest awarding, Also the Jeopardy challenges, inside various categories (including subjects like Physics, Eletronics and PPC-M (Programming like Marathons)). This time, we choose to use a dynamic scoreboard system, where all challenges starts with 500 points, and according to the amount of solves, they decrease the score.

The CTF will basically consist of 2 Steps. Your team will only be able to visualize some challenges when have solved a specific number of challenges. These challenges of the second stage are those that require isolation, meaning that specific and unique machines will be allocated to your team, and you will receive the credentials of our VPN Server to access them. This stage can be summarized with this image: 


The winner team will be the one to score the largest within the 48 hours. In the case of a tie, the team that got to their score first will be crowned winner. 





If you have any questions, contact us in our e-mail contato *at* tecland dot com dot br.

For the first time, these tiny letters on the bottom of the screen are not a prank. \o/ if you got to this point, means that you probably read all our informations and instructions. And for that, we will award your team with 10 extra points in the competition, after all, reading is FUNDAMENTAL for a competition like this. Use the flag "CTF-BR{RTFM_1s_4_g00d_3xpr3ss10n_v3.0}" on the challenge named "Bônus 10" during the day of the event and guarantee your extra score! ;)