AmateursCTF 2024


CTF Archive.

AmateursCTF 2024

Les Amateurs's second CTF competition, with problems aimed at high schoolers and a spread from beginner-friendly tasks up through harder categories.

This archive currently includes the AmateursCTF 2024 challenges that were verified as rehostable on pwn.college.

Original Date: Sat, 06 Apr. 2024, 06:00 UTC — Mon, 08 Apr. 2024, 00:00 UTC
Original URL: https://amateurs.team/
CTFtime Entry: AmateursCTF 2024
Organizing Team: les amateurs de la competition ctf



Challenges

An RSA oracle cubes a randomly chosen (flag << 256) + noise value after adding your chosen scramble.

Author: helloperson

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

A giant modular linear relation comes with enough information to recover the original flag offline.

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

out.txt contains the output of a custom keystream construction applied to thousands of random samples and the flag.

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

Almost as bad of a time as the transcription quality.

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

In 2004, I wrote a program to calculate the flag using the latest and greatest Java 1.5. It's still running to this day.

Author: cinabun

Connect with SSH

Link your SSH key, then connect with: ssh [email protected]

30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

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