Description

Cookie Monster has hidden his top-secret cookie recipe somewhere on his website. As an aspiring cookie detective, your mission is to uncover this delectable secret. Can you outsmart Cookie Monster and find the hidden recipe? You can access the Cookie Monster here and good luck

solution

We should check for HTTP cookies.

Check the cookies
Start DevTools in the browser by pressing F12 or using Ctrl + Shift + I.
Then select the Application tab and make sure http://verbal-sleep.picoctf.net:56241 is selected under Cookies in the menu to the left.

Note the string in the Value field (cGljb0NURntjMDBrMWVfbTBuc3Rlcl9sMHZlc19jMDBraWVzXzZDMkZCN0YzfQ%3D%3D) that looks Base64-encoded.

decord this using cyberchef

picoCTF{c00k1e_m0nster_l0ves_c00kies_6C2FB7F3}

This challenge demonstrated a classic and simple but very important web exploitation technique: extracting hidden data from HTTP cookies.

HTTP Cookies Cookies can carry session data, tracking info, or even hidden flags.

A cookie is a small piece of data that a website stores on your browser to remember information about you.

Description#

solution#

✅ Conclusion of the “Cookie Monster Secret Recipe” Challenge – picoCTF 2025#

HTTP Cookies Cookies can carry session data, tracking info, or even hidden flags.#

🍪 What is a Cookie (in web browsers)?#

Description

solution

✅ Conclusion of the “Cookie Monster Secret Recipe” Challenge – picoCTF 2025

HTTP Cookies Cookies can carry session data, tracking info, or even hidden flags.

🍪 What is a Cookie (in web browsers)?