picobrowser - 200pt

Challenge

This website can be rendered only by picobrowser, go and catch the flag! https://2019shell1.picoctf.com/problem/45071/ (link)
or http://2019shell1.picoctf.com:45071

Hints

You dont need to download a new web browser

Solution

When we connect to the website we can see a big green “flag” button but if we press it we get an error You're not picobrowser!
and our browser info. So first thing to try is to modify the user-agent in our request with picobrowser. To do that we can open
network tab in firefox console and load the flag page. We can edit the request headers and write picobrowser instead of our usual
user-agent, then we send the request again

picoCTF{p1c0_s3cr3t_ag3nt_1ef9ee50}