Solution for Net-Force.nl : Level 701 - Hey, where are you from?
This is the link to the original challenge: http://www.net-force.nl/challenge/level701/index.php
When all the HTTP vars are [OK] you will find the password!
Modify Headers - https://addons.mozilla.org/en-US/firefox/addon/modify-headers/
User Agent Switcher - https://addons.mozilla.org/en-US/firefox/addon/user-agent-switcher/
Logic Behind this challenge:
Well from initial analysis, it seems that the author of this challenge wanted us to fake our data to conform to what he / she wanted.
So let's use Modify Headers and fill it with these information as shown in the image below.
It seems like we are required to get it right if we use a Mac or Ubuntu. But in this case, i prefer to use User Agent Switcher and changed it to Android user agent.
After changing to that, we smelled success and immediately. The answer appeared right before our eyes.
The password is: httpheaders