It's been a long time since I lived there, but I thought you could buy beer and wine after 1:00pm on Sundays (I think that was the time). But, hard liquor you couldn't get because the ABC stores were closed.

Edit: BTW, you can purchase NO ALCOHOL in Indiana on Sunday. Unless, of course, you go to a restaurant that makes at least 51% of their income, on average, from food sales. Then, you can buy any alcoholic beverage your heart desires (beer, wine, whiskey, etc.)