Welcome to StemCTF

This is a simple CTF challenge. Try to find the flag!

CTF Logo

Flag format: stemCTF{...}

Example: stemCTF{example_flag} <-- This is just an example, not the actual flag --

Available Challenges

Challenge 1: Binary Decoder

Easy

Decode a binary number to find the flag.

Start Challenge

Challenge 2: Image Metadata

Easy

Find the flag hidden inside an image's metadata.

Start Challenge

Challenge 3: Secure Login

Medium

Bypass this 'secure' login form to get the flag.

Start Challenge

Challenge 4: Error Detective

Medium

Investigate error messages to find the hidden flag.

Start Challenge

Challenge 5: Caesar Cipher

Medium

Decode Julius Caesar's secret message to find the flag.

Start Challenge

Challenge 6: QR Code Hunt

Easy

Scan the QR code with your phone to reveal the hidden flag.

Start Challenge

Challenge 7: CSS Secrets

Medium

Find the flag hidden in the CSS stylesheets.

Start Challenge

Challenge 8: XSS Filter Bypass

Hard

Bypass the comment filter and execute JavaScript in the browser to reveal the flag.

Start Challenge

Final Challenge: Colorful Flag

Medium

Unlock by solving:

  • 3 Easy challenges
  • OR 2 Easy & 1 Medium challenge
  • OR 2 Easy, 2 Medium & 1 Hard challenge
Locked