Refer, Register & Win Plugin

Hello,

I’m looking for a Contest plugin that would do the following:
– Our users must be registered in our wordpress site in order to be able to participate in the contest
– Once they login they find next to each item published in the contest a link or social media icons that allow them to share the post or item.
– Once they share it whenever someone REGISTER on our website using their referral link they earn a specified number of points.
– Once they reach a certain number of points that is set for that item they win.

Please let me know if there is such a plugin.

Thank you
C.