Sensex rises over 500 points, Nifty above 23,900; auto stocks lead

Indian benchmark equity indices opened flat on Friday amid year-end trading. Gains were observed across sectors, led by auto stocks. IndusInd Bank shares surged after putting MFI loans for sale. Kfin Tech, Amber Enterprises, and Intellect Design Arena witnessed profit booking. Analysts suggest support and resistance levels for Nifty.