The result leaves the Buddies in the bottom two in the SPL, one place and one point behind their opponents, but Lennon was keen to highlight the positives from the game.
"This is a very difficult venue to come to and they are a very hard-working side but I thought we matched that and showed a bit of quality in the second half," he said.
"All that was missing for us was a goal, but our endeavour and commitment couldn't be faulted.
"The final ball was fantastic. We drew a couple of good saves and hit the woodwork. There was absolutely everything bar the end product.
"I am absolutely delighted that we are getting there and, more than that, in the manner that we are getting there.
"I certainly believe we are starting to see a bit of the old St Mirren coming back in there."