Hacker Summer Camp 2017: Pros vs Joes CTF

Series: Hacker Summer Camp 2017

I’ve returned from this year’s edition of Hacker Summer Camp, and while I’m completely and utterly exhausted, I wanted to get my thoughts about this year’s events out before I completely forget what happened.

The Pros vs Joes CTF was, yet again, a high quality event despite the usual bumps and twists. This was the largest PvJ ever, with more than 80 people involved between Blue Pros, Blue Joes, Red Cell, Grey Cell, and Gold Cell. Each blue team had 11 players between the two Pros and 9 Joes, making them slightly larger than in years past. (Though I believe that’s a temporary “feature” of this year’s game.)

I was also incredibly happy by the diversity displayed by the event this year: at least 3 of the blue teams had women on them, as did both Gold and Grey cells. Teams had experienced players, with some being veterans, as well as players with no professional experience (students) and professionals working outside the information security industry (my team alone had two electrical engineers). This mix is part of what makes Pros vs Joes so good – everybody has something to contribute, and you get such a wide range of views and experiences. Two players on my team absolutely crushed the Windows aspects of the game, which was incredible because everyone knows I’m a hardcore Linux guy. (The last version of Windows I used as a “daily driver” was Windows XP SP 2. In 2003.)

Game mechanics were incredibly different this year than in years past. No longer did a team turn in “integrity flags” for local points. More hosts had multiple scored services. Tickets incurred a penality if they were reopened. Most signiciantly, there was a store where teams could buy a variety of things, including the services of a Red Team member, a Security Onion box (I gotta give Security Onion a try!), or “outsourcing” a grey team ticket. My team chose to make little use of this store, but other teams made extensive use of Dichotomy’s Emporium. (I’m not convinced that either is an “optimal” strategy, because a lot depends on the strengths and weaknesses of their own team.) I can’t wait to see the analysis from our data scientist on the different aspects of the game.

The game environment, on the other hand, was essentially unchanged from last year. The same vulnerabilities and hosts were present. This lead to quite a bit of surprise when, during scorched earth, I was able to use the same BIND 9 bug to take out DNS (and consequently, the ability of Scorebot to reach any services) for all 3 other teams (which was a repeat of my same scorched earth tactic from last year). A note to future captains: DNS is important, perhaps you’d like to patch that machine.

Scorched Earth

I’ll leave any major announcements about the game to Dichotomy, but I do want to mention that I envision more collaboration between the Pros & Staff over the next year. Pros vs Joes is a learning CTF first, and this will allow us to build a more immersive environment and a better set of resources for the blue staff to use in mentoring Joes.

I was exhausted by the end of this PvJ, but it was a kind of good exhaustion. No matter how tired I was, I was satisfied to know that all of my players seemed to have learned something throughout the course of the game, and the cherry on top was a victory for ShellAntics. Thanks to Dichotomy, Gold Cell, Red Cell (no hard feelings t1v0?), and of course, the awesome Joes on my team.