Trever Carson came to 10-man St Mirren's rescue as the Buddies recovered from an early red card to earn another welcome point on the road.
In a game with few flashpoints, the first came within the opening ten minutes as Ethan Erhahon was given his marching orders after raising his arm to Rory McKenzie.
Despite their numerical and home advantage Kilmarnock struggled to open up the Buddies' steely defence all afternoon.