The 26-year-old Scot scored a career-best result at the Marina Bay Circuit, and his manager Richard Goddard believed the result had improved Di Resta's hopes of moving from Force India to a bigger team.
The former DTM champion had been linked with drives at McLaren and Ferrari, although the first of those seats has gone to Sergio Perez.
Di Resta continues to be linked with a move to Maranello in place of Felipe Massa, while Force India are likely to want to retain his services after another promising season.
But in the meantime he admits his future is up in the air.
"There is nothing at the moment," he said. "Our team policy is to not talk about driver contracts and there is not much more I can say.
"Things have progressed quite a bit since Singapore and I am sure reactions from that will be sorted soon."
If Di Resta were to go to Ferrari it is likely that it would only be on a one-year contract, with the Italian team rumoured to have already secured the services of reigning world champion Sebastian Vettel from the start of the 2014 campaign.
But Di Resta admitted he would be interested in making the switch, regardless of the length of his contract.
He said: "I have always said, when I was coming through my career and into Formula One, the important thing is winning races and winning championships, and whenever the opportunity is given, that's the position I want to be in.
"But just now, obviously with Force India, my mentality is different and results like we get in Singapore are big. That's the position I am in. I've got six races up and coming to try and maximise, to do a job under the contract that I am in."