picoCTF Power Cookie writeup

This is a web challenge on picoCTF.

Let's start up the challenge and go to the website.

Click on continue as guest

Now since the name of the challenge is Power COOKIE, I decided to go to the Application tab by right-clicking the page and then clicking on Inspect, then to Application

Under the Cookies section, we see a cookie. The value of isAdmin is set to 0.

I double click the 0 in the Value field and set it to 1

press Enter and reload the website

..and we have our flag!