were are the robots

Solution

When entering the webpage we find this:

Both the title of the challenge and the starting page suggest looking into the robots.txt which is a file used to block web crawlers from accessing certain parts of the site. In this case, we find the following:

We can see that there is a “Disallow” section with /8028f.html URL. When we go to that page we find the following:

As easy as that, we finally get the flag:

Flag

The flag is picoCTF{ca1cu1at1ng_Mach1n3s_8028f}