Welcome to the dark side(fbi, 25 points)
"At Silk Road, every precaution is made to ensure your anonymity and security, from connecting to the site, to making your transactions, to receiving your items."

First of all you'll need Tor to visit the .onion site. In these types of challenges involving a site, viewing the source is pretty much always the first step. By viewing the source, we see a comment at the top, "<!-- 25 - EKO{buy_me_some_b0ts} -->". That's our flag.

<span>Flag: EKO{buy_me_some_b0ts}</span>

Original writeup (http://specterdev.blogspot.ca/2016/10/write-up-ekoparty-2016-ctf-misc-50pt.html).