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Del Norte CTF Club 2022-23

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What are CTFs?

  • Cybersecurity Competitions
  • Stands for “Capture the Flag”
  • Main objective: find ‘flags’ for different problems:
    • Formatted as: “flag{whatever_stuff}”
  • You must use different cybersecurity skills to find flags

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Primary Categories for CTFs

  • Forensics
    • Finding hidden messages in files
  • Cryptography
    • Finding a flag from a given value or string (encryption)
  • Reverse Engineering
    • Taking a program and finding the flag from that
  • Osint
    • Looking through stuff online to get the data
  • Misc
    • Yes, this is a category
  • Binary Exploitations
    • Finding a vulnerability in a program and exploiting it
  • Web Exploitations
    • Ethically hacking websites

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Primary Competitions

  • PicoCTF
    • Global CTF with national and international leaderboards
    • FREE!!!!!!!!!!!
    • Top 5 teams earn prizes and top 3 earn a free visit to Carnegie Mellon University (aka CMU) for each leaderboard
    • Max 5 participants per team
    • Takes place in March and lasts for 2 weeks
    • Picoctf.org
  • ctftime.org

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Sample Forensics+Crypto Problem

Find the hidden message in this cat image: https://drive.google.com/file/d/1IXZyE9LQRLomH8X82CIphChY4SSYH2JA/view?usp=sharing

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When are the Meetings and what do we do?

  • Meeting Times/Location: Every 1-2 Weeks on Saturdays 7-8 PM in discord vc
  • Learn some concepts of all categories for CTFs
    • Check this before classes if you have no experience: (Highly recommended) Beginner’s guide
  • Do some practice rounds
    • Play.picoctf.org
  • Prepare for competitions
    • ctftime.org

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Questions?

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Thanks