I would suggest the train 12785
In Hyderabad... it all depends on which platform the train stops..you can take MMTS and get down on PF2 at Kacheguda and board 12785 on PF3... but if it is on PF4..you have to use the lift/escalator or FOB
In Bangalore, you can get down at Bangalore Cant (BNC) so that you can walk straight out to exit without FOB.