Blind Date

pwn x86/x64 blind FCSC 2021 solved on

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Description

A company wants to create an online service that protects their customers’ information. Can you show them that it is not secure by reading the flag.txt file on their server? The managers of this company did not want to give you the source code of their solution, nor the compiled binary, but they only offer you a remote access to their service.

Files

Author

Cryptanalyse

Challenge Instructions

  1. First, download docker-compose.yml:
    curl https://hackropole.fr/challenges/fcsc2021-pwn-blind-date/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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Writeups

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