Points: 40 Category: Web Exploitation
Who doesn't love cookies? Try to figure out the best one. http://mercury.picoctf.net:17781/
(None)
The link goes to something that looks like this:
I typed in "snickerdoodle" and entered it.
I love snickerdoodle cookies!
Ctrl + Shift + I will reveal some things, navigate to storage, then find cookies storage.
I noticed there's a grand total of one cookie with a value of 0. I changed the value to 1 and refreshed the page.
I love chocolate chip cookies!
I kept increasing the numeric value of value by 1 until at 18, it gave the flag:
picoCTF{3v3ry1_l0v3s_c00k135_bb3b3535}