FREE HACKING CHALLENGES · OLYMPIAD-GRADE CTF TRAINING
Train like an ethical hacker.
90 hands-on labs across popular cybersecurity domains. Real vulnerabilities in live containers — start practising and learning in seconds.
$ cyberlearner start BA-05
Spinning up container…
Target ready — 10.10.14.7:31337
$ nc 10.10.14.7 31337
Welcome to Overwriting RIP
YOUR PROGRESS
0 / 0
86
Hands-on labs
10
Disciplines
5
Learning paths
Live
Container per lab
$0
Free
LEARNING PATHS
Pick a discipline. Follow the track.
Each path orders its labs from fundamentals to competition difficulty. Start anywhere — solves count everywhere.
PWN
22 labs
Binary Exploitation
Memory layout and GDB through ROP chains, canary bypasses and shellcoding.
REV
27 labs
Reverse Engineering
Anti-debug tricks, VM detection, keygens, obfuscated binaries in C, Rust and Go.
DFIR
22 labs
Forensics & Blue Team
Disk images, packet captures, memory dumps — then tune a WAF against real attacks.
CRYPTO
18 labs
Cryptography
Classic oracles to post-quantum: NTRU, LWE, SIDH and lattice attacks.
WEB
5 labs
Web Exploitation
Host header tricks, auth bypasses and request smuggling on live targets.
???
2 labs
Mystery Labs
No category. No hints. 500 points each. Attempt if you dare.
Practical targets, easy setup
Every lab spins up a live container with a real vulnerability. Click start, get an environment, and start learning.
Built to olympiad standards
Challenge design and difficulty curves calibrated for international competition prep.
Complex Ideas, Simply Explained
Many labs include a plain-language writeup of the technique.
Web
Reverse Engineering
Binary Exploitation
Cryptography
Forensics
OSINT
Blue Team
AI Security
Network
Steganography
Security Engineering