The 3rd edition of the Hack4Krak CTF 2026 - the biggest CTF for highschoolers in Poland 🇵🇱
Note
This edition has finished. The repository is archived. It now stands as a complete record of every task, its configuration, and an official write-up. Browse, learn, and reproduce.
|
participants took part |
teams captured at least one flag |
flags submitted during the CTF |
tasks across 9 categories |
teams solved every single task |
Over 30 hours of non-stop hacking across two days.
Every task links to its description (the prompt players saw) and its write-up (how it was meant to be cracked).
This repository follows the layout defined by Hack4Krak/TasksTemplate. Visit it for the technical background, or browse the docs/ directory.
| Path | What's inside |
|---|---|
tasks/ |
Configuration, source, tests & write-up for every task |
config/ |
Configuration for the specific CTF event (timeline, labels, deployments) |
toolbox/ |
Our custom CLI for working with this repository |
docs/ |
Documentation — structure, testing & deployment |
Running the Hack4Krak Toolbox locally:
# 1. Download all required dependencies
uv sync
# 2. Run the CLI
uv run toolboxGot questions about tasks, configuration, or deployment? Join our Discord. We'll be happy to help.
Tasks were made by the Hack4Krak team: Norbiros, wojpo, Goteusz, Sanielia & P0m1d00r.
Huge thanks to them for grinding out all the tasks down to the very last second, and thank you for participating. See you next edition!