pas to asc conversion is probably searched by users that want to import and work with Papyrus game assets in 3ds Max. In the past it was possible to import Papyrus asset files (.pas) to 3ds Max via special plugin (MAX plugins.de). Whilst this has been used years ago, it might still be viable in modern version of 3ds Max.
Unfortunately, we have not found any specific information about such conversion, so if you have issues wth importing .pas files to 3ds Max, it would be best to contact 3ds Max support or some community website.
Updated: January 18, 2023