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1. Forensics / Verify

   After logging in to a remote shell we find a folder files/ containing flags and fake flags and a script ./decrypt.sh as well to check and decrypt those files.

   If we run the script on one of those files we get an output telling us whether that file contains …

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2. General Skills / Binary Search

   We are provided a game script that automatically gets executed when connecting to the remote shell:

   #!/usr/bin/bash
   
   # Generate a random number between 1 and 1000
   target=$(( (RANDOM % 1000) + 1 ))
   
   echo "Welcome to the Binary Search Game!"
   echo "I'm thinking of a number between 1 and 1000."
   
   # Trap …

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