Bomb the Bass used remixed Assault of Precinct 13 samples for the Megablast track. But it's very obvious that they've only modified these ones from "The Splash Band". This group made a John Carpenter Remix album in the mid 80s. The samples are from the track "The End (Disco)".
The track name is badly retranslated from the German Assault release, which is also known here as "Das Ende". Looks like they never known the original name of this movie.
Here's a mp3 sample of this track: