Nifty dipped below 0.50 fib level and closed above it. 17600 - 17500 is a possible zone where current bearish move could end and we can see reversal, if price doesn't crosses below 17400 then we can expect a reversal which may take Nifty to 18300 and above. Setup will be invalidated if prices crosses below 17400. Support currently is now at 17600 & 17400 while on the upside resistance is at 17770 - 18000 - 18300.