Break a weak RSA cookie encryption system and retrieve the flag.

Find the original flag by brute forcing a modular equation.

Investigate a damaged disk.

Use XSS, RFI and some cyber skills get a shell on the server and escalate your privileges.

Exploit a simple known CVE and then escalate your privileges with fail2ban.

Exploit a self-implemented encryption system made with PHP.

You need to exploit some web vulnerabilities and enumerate in order to escalate privileges and gain root.

This room is the challenge based on the crypto rooms.

This room involves phishing users to gain a shell.

This room involves finding a public exploit, abusing it to obtain a backdoor and doing privilege esclation to get root.