Indian equity benchmarks staged a powerful rebound on Friday, with the Sensex closing at 75,527.95 points and the Nifty reclaiming the 23,600 mark, as easing concerns over the Iran conflict and a sharp fall in crude oil prices triggered a broad-based rally across global markets.Sensex jumped 1,695.40 points to settle at 75,527.95, while Nifty soared 461.30 points to 23,622.90.