Hacktopia · CTF

Capture the flag

Four beginner-friendly puzzles. Find each flag, paste it in, and unlock the next mission. Progress is saved in your browser.

0 / 4 solved

CHALLENGE 01

EASY✓ SOLVED

Every good engagement starts with recon. The first flag is hiding somewhere on this very page — you just need to look in the right place.

HINTSources are crucial — nothing escapes a good hacker’s eyes.

CHALLENGE 02

EASY✓ SOLVED

Decode the following string to find the flag:

53 45 43 52 45 54 5f 46 4c 41 47 7b 48 65 78 5f 49 73 5f 46 75 6e 5f 54 6f 2d 44 65 63 6f 64 65 7d

HINTIf you are a chef, you know how to bake.

CHALLENGE 03

MEDIUM✓ SOLVED

An “admin portal” guards the next flag. Its login check is built the lazy way — by gluing your input straight into a SQL query.

HINTWhen the security uncle is like Forrest Gump.

CHALLENGE 04

MEDIUM✓ SOLVED

There is a page on this site that isn’t linked from anywhere. Find it and read it carefully.

HINTEven search engines are told where not to look.