I did a little more research and found out that the android app stores epubs as when it is extracted. i,e if you change the .epub extension to .zip and extract the file you will get the format in which the android app stores them.
Code:
https://www.mobileread.com/forums/showthread.php?t=220019
And the sqlite file which is being used to store the last read position, is it specific to each epubs or is there a central sqlite file which the reader uses?
And I was thinking if I can copy the folder from Android to my laptop and get dropbox to sync it, is there anyway calibre can read this?
I know its a long shot, but just asking.