Indian benchmark indices Sensex and Nifty ended the week on a positive note, rising up to 0.5% even as broader markets crashed amid rising headwinds including oil prices crossing $117 per barrel.Sensex jumped 308 points to close at nearly 74,460 while Nifty 50 gained 116 points to end the session at 23,053 on Friday. This came even as broader markets crashed, with Nifty Midcap 100 and Nifty Smallcap 250 indices dropping up to 2%.