So I was lurking through the forums for an acurate anwser to my question but mostly there wasnt any good info on that particular topic.

So here it is:

As I assumed the monitor mode for built in wifi card on Samsung Galaxy s2 is not suppported.
So what if I were to connect an external wifi adapter supported on regular pc to SG2 through micro usb converter .
Would it work on the go? If not, is it even possible? I'm sure someone already tried that. Could anyone enlighten me and point me in right direction?