Revaulting

Description

We are being told that this online safe is not secure enough. Can you prove it by accessing its contents?

Note: Thanks to $in for pointing out a minor bug in the initial challenge.

Files

docker-compose.yml
revaulting
114.46 KiB – 0f3566cf7e73e608cf133caac7a73d5b8b2d7a9d9757d12f69a20451a77897c3

Author

Cryptanalyse

Challenge Instructions

First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2021-crypto-revaulting/docker-compose.public.yml -o docker-compose.yml
Launch the challenge by executing in the same folder:
docker compose up
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.

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: 19ef88ba1b0b650a3b056b6c5112a0dd294f4dacf3c1bf622a80db4d0ed67aab

Writeups

I've been looking for a long time and I still can't find the flag!

You can vote for the solutions you prefer by using the on their respective pages.

Date	Author	Language	Tags	Vote
2023-11-22	sin-infosec	🇬🇧	TeamFrance