Indian benchmark indices, Sensex and Nifty 50, are expected to have a flat to negative start on December 5, influenced by GIFT Nifty trading at 24,517.50. On December 4, the market closed positively for the fourth consecutive session, with Sensex up 110.58 points at 80,956.33 and Nifty up 10.30 points at 24,467.45, driven by gains in realty and financial stocks.