Welcome to the public DEF CON 27 (2019) OpenCTF Repository - Developed, Organized, and Hosted by Neg9.

The event was hoted in-person at the annual DEF CON Hacker Convention over Friday/Saturday (2019-08-09 — 2019-08-10) in the contest area.

• Contest website: https://openctf.cat (Archive: website-openctf.cat/)
• Contest Twitter: @open_ctf and @Neg9
• DEF CON Forum Contest Thread: https://forum.defcon.org/node/228347
• CTFTime Event Page: https://ctftime.org/event/861

All challenges that were available during the contest are published here under challenges/, and details about how challenges are structured is described in challenges/README.md

If you find a problem with a challenge in any way, please feel free to create a Github issue here, however there is little expectation of major fixes going forward.

This work, including all challenge material from the event, is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License