i have heard these methods below.i m not sure whether it will work
You can hack your friend's facebook account by aquiring their Ip..
To Do so we will be using “netstat" command in windows. If you want
to know the IP address of a specific person on facebook or orkut or any chat service, there is only one way:
Just invite or ping him for a chat and while chat is ON open ‘Command Prompt‘ on your PC (Start >Run>cmd).
CAUTION: before trying this make sure you close all the other tabs in your browser and only facebook is open. Also if possible delete all the
history and cache from your
When command prompt opens Type the following command and hit Enter.
And you will get all established connections IP addresses there.
Note down all the suspicious IP’s Tracing Location
To do so we will be using IP tracer service. For this you can rely on http://www.ip-details.com
Now you get ip address of your victim you can hack him remotely!
Trace his/her location and much more !!
follow this link how to hack fb account using the IP step by step http://www.supportitdesk.com/steps-to-hack-facebook-account-in-a-minute