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All labs/google-ctf-2021-tonality

Crypto

Google CTF 2021: tonality

A signing oracle over a protobuf protocol: the server signs one message of your choice and you must forge a signature on another.

Not startedDockercommit 9b27830x86_64 · aarch64Secret

Objective

Retrieve the flag from the challenge service.

The brief for this lab lives in its repository.

Submit evidenceSecret

Launch the lab

Open it in the Cyber CTF launcher, or run it yourself with Docker Compose.

Open in the launcher Source code

›Run it manually

$git clone https://github.com/CyberCTF/google-ctf-2021-tonality && cd google-ctf-2021-tonality && docker compose up -d

Without the launcher, the lab uses its public development evidence: great for practice, but it won't complete the lab.

Details

Category: Crypto
Difficulty: Hard
Evidence: Secret
Runtime: Docker
Runs on: x86_64, aarch64
Commit: 9b27830
Repository: CyberCTF/google-ctf-2021-tonality