I wanted to provide the SnackBar animation from top, instead of the regular behavior that displays the SnackBar from bottom. Is this easily hackable?
No it is not possible. The documentation states that
They show a brief message at the bottom of the screen on mobile and lower left on larger devices. Snackbars appear above all other elements on screen and only one can be displayed at a time.
You could use a third part library, like Crouton for instance