Encryptor 2000

crypto symmetric FCSC 2020 solved on

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Description

We give you access to a remote service that encrypts a secret. Can you find this secret?

Note: This challenge has been made for the finale of FCSC 2020.

Files

Author

Cryptanalyse

Challenge Instructions

  1. First, download docker-compose.yml:
    curl https://hackropole.fr/challenges/fcsc2020-crypto-encryptor2000/docker-compose.public.yml -o docker-compose.yml
  2. Launch the challenge by executing in the same folder:
    docker compose up
  3. Then, in another console, access the challenge with Netcat:
    nc localhost 4000
⚠️ Important: You must solve the challenge by interacting with the Docker container through the exposed network port. Any other way is not considered valid.

In case you encounter problems, please consult the FAQ.

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