If you filed asylum when you are in status and are still in status , you can do AOS here. If you are out of status, except in the case of marrying us citizen ( in this case you can do AOS in front of immigration judge) , you have to go for Counslor processing outside US. At that moment of time, it can be done in any other country then Nepal. But risk remains, what if they deny your GC through employment, you wont be able to appeal it since it is Counsler processing and you wont be able to come back to US. You will lose the credibility in asylum case too. I am in the same boat so i have done research.

And this sucks big time.