Palindrome (Harder)

pwn x86/x64 FCSC 2022 solved on

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Description

Here is a shellcoding exercice as you like it! [At least I hope you do :-)]

A simpler variant of this challenge is available here: Palindrome.

Files

  • docker-compose.yml
  • run.py
    1.13 KiB – 5cd1dcbf1c3d8cfd5001f6c68517ed4523c2dd435bc8939d5a7746d17765fb5d
  • execut0r
    16.61 KiB – 14b79a02098bed63ae19017431271b9485a37bdcc80766fb2fdeb60735b27ac1
  • execut0r.c
    402 B – 22eee7a1a06c01e8e68c488fba25ccaa0a05bb8354d06ef42e6ec090ba4ed5c6

Authors

XeR
Cryptanalyse

Challenge Instructions

  1. First, download docker-compose.yml:
    curl https://hackropole.fr/challenges/fcsc2022-pwn-palindrome-harder/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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