During the 2015 DEF CON CTF, LegitBS was gracious enough to let us run a LiveCTF mini-challenge inside the regular CTF event.
Two challenges (github.com/Vector35/defcon201...) were written for the event. The first, HearYe was a qualifying challenge to get the top four times (we only had hardware to be able to do captures on four simultaneous machines and figured logistically we wouldn't be able to do more anyway) for the final event that used the rocklock challenge.
Unfortunately, the mic level for one of the mics was far too low and one half of the commentators audio was lost. This video is uploaded for posterity's sake even though the final product is hard to watch given the broken audio.
Thanks to HJ from LegitBS who was the other commentator, again our apologies for the broken audio. Lesson learned -- always record audio from multiple sources when you plan to edit later!