Specifications
| Format | Challenges |
|---|---|
| Level | Intermediate, Advanced |
| Price | Free |
| Access | Registration required |
| Activity | Active |
| Language | EN |
| Category | Web, Cryptography, Forensics, Pwn, Reverse, Misc |
A challenge set built on a stated refusal: no guessing and no simulation. Challenges run against real systems and real data, so the answer is recoverable from what you are handed. Six categories: Crypto, Forensics, Misc, Pwning, Reversing, Web. Registration required.
Pros & cons
Pros
- Challenges run on real systems rather than a sandbox emulator
- The no-guessing rule weeds out challenges written for a solve rate
- Free once registered, with six categories to move between
Cons
- You cannot read a statement or a hint without an account
- The floor is high: without crypto and reversing basics most tasks stay shut
- Real-data challenges turn into long sitting sessions rather than quick wins
Who it fits
Suits someone who has solved hundreds of tasks elsewhere and wants conditions that do not flatter them. If crypto and reversing are shaky, warm up on smaller sites first.
Getting started
- Register, then begin with Web and Forensics, where the entry is most obvious
- Read each statement to the end before running anything: the data is meant to be enough
- Keep separate notes per challenge, some need a careful chain of steps
History
The no-guessing principle is stated rather than merely implied, and the challenges are built on real datasets to keep it honest, which is also why some of them are awkward to finish in one sitting. Six categories, all still growing, and nothing behind a paywall. Checked.