A second trivial web task.
As previously we check for robots.txt and again there is:
User-agent: *
Disallow: /flag/
And in the directory there is flag.txt.
The link is actually broken, but we can fix the name by hand.
Once we get there it says: You are using the wrong browser, 'Builder browser 1.0.1' is required.
If we set User-agent to this string we get: You are refered from the wrong location hackover.18 would be the correct place to come from.
And if we set Referer to this string we get: aGFja292ZXIxOHs0bmdyeVczYlMzcnYzclM0eXNOMH0= which decoded as base64 string gives hackover18{4ngryW3bS3rv3rS4ysN0}