Hi guys, I don't know if you've heard of this hacking game/training thing called Hackxor (I assume you have), but anyways, I'm stuck on a part of it.
In the game you play as a hacker trying to track down another hacker. At the beginning of the first stage (where I'm stuck) you are given a HTTP GET request. I was able to get the email of the hacker from the referer header, and I was also able to get what I think is their IP address from a vulnerable extension to the mail app in the game that lets you check logins to your account. All I need now is their actual name (I think), and that's where I'm stuck. Do I have to exploit the username database on the website or something? I have no idea because I'm a total noob 
I don't want to be told how to do it, because that feels like cheating. I just really need a push in the right direction. I hope this isn't a weird question or something. I'm new to the forum. 
The game can be downloaded here: http://hackxor.sourceforge.net/cgi-bin/index.pl

Thanks,
AllSeeingEye