synch Sharepoint project list or custom list with CRM 2011 online task

Hi, we are using Sharepoint 2013 online and CRM 2011 online - Is there a way to synch the tasks list that we create in SharePoint back to CRM 2011 online? its a very basic tasks that has state/end dates and some description and notes that's all. 

If its not possible out-of-box, how can we access the task list in sharepoint programmatically - From  CRM, I would simply create a plug-in on create/update of Task and would like to pass the record over to Sharepoint list and would like to do the same from sharepoint as well. Any idea would be very helpful.