Noise (Harder)

Description

Noise is the new 100% secure chat application. Thanks to its start-to-start tunnel, your messages are encrypted end-to-end. You can even share secrets with your friends. Isn’t that great?

The noise-fix.patch is the patch applied to Noise challenge source code.

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

Files

docker-compose.yml
noise-harder.tar.xz
929.70 KiB – 3f57930677a2b06901e3050b63ce1e289400fbba10e7e598a29d74ee0bee57be
noise-fix.patch
1.93 KiB – 707b7b852da04488ec7116dd0265856519064148f2bb5f694c75d07eaa03c8a5

Author

BitK

Challenge Instructions

First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2024-web-noise-harder/docker-compose.public.yml -o docker-compose.yml
Launch the challenge by executing in the same folder:
docker compose up
Access the challenge at http://localhost:8000/.

⚠️ 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.

Flag

You don't have JavaScript actived. No problem! You can check your flag like this: echo -n 'PUT_THE_FLAG_HERE' | sha256sum # possible output: 17f4de33d3a0ee6fafcbd71f664a2ae0d0604adb586c2c319061b6762782ca70

Writeups

There are no public solutions for this challenge yet, but you can submit yours after getting the flag.