yeah, the trans is most likely fine, if there's no atf, there wouldn't be any motion transfer via the torque converter, so the car just stops. fix the lines, fill it up with atf and go.
2012 X3 - m-sport - stock
2004 325xi turbo - megasquirt3 for engine, Megashift for auto trans - build thread
1994 supra MKIV - single 72mm - aem v2, 1000CC ID, dual denso pump
2004 SE-R SpecV turbo - megasquirt3