How to Steal Passwords via Android Payload

hello null-byte world :D

i have a qst ! after creat an android payload and send it to some one , and start multi/handler , all what i can do dumpsms , webcamsnap .... etc ??

can i upload a script to victim phone to steal all passwords ? or steal them manually via shell ? going some place in android os and find them ? and after them download them as .db ?? or even steal the access token of fb ?? i searched for that alot but i dont find any things in google or youtube , can i take ur help and tnx for all