Challenge Overview
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
After going to http://verbal-sleep.picoctf.net:64848/ you can put in any username and password and then look at the cookies in the dev tools. Depending on your browser it may be in a different location, a common location would be in the application tab.
Once you see all the cookies you should see one called secret_recipe with this value: cGljb0NURntjMDBrMWVfbTBuc3Rlcl9sMHZlc19jMDBraWVzXzc3MUQ1RUIwfQ%3D%3D
cGljb0NURntjMDBrMWVfbTBuc3Rlcl9sMHZlc19jMDBraWVzXzc3MUQ1RUIwfQ is base64 for flag and now CyberChef or echo "cGljb0NURntjMDBrMWVfbTBuc3Rlcl9sMHZlc19jMDBraWVzXzc3MUQ1RUIwfQ" | base64 -d could be used to get the flag.
Flag: picoCTF{c00k1e_m0nster_l0ves_c00kies_771D5EB0}