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Challenges will treat the following topics (non-exhaustive):

• Cryptography
• Reverse-Engineering
• Exploit
• Web
• Forensic
• Hardware

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Individual hardware requirements:

• a computer
• Power strip(s)
• a L2 swtich
• a RJ-45 cable to access challenges
• a brain

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• Competitors have to be physically present.
• Maximum number of participants per team is 8 and minimum is 1.
• Internet connection will be provided.

It is strictly prohibited and can be subject to disqualification to:

• attack machines other than designated ones,
• share flags or solutions between teams,
• DoS GreHack CTF infrastructure.

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You can prepare yourself by giving a look to previous GreHack challenges: