Massachusetts Wholesaling Question

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Good afternoon, 

I have been doing a lot of research through the bigger pockets forum, mostly related to wholesaling. It seems that all the talk about wholesaling is based in other states. My confusion is surrounding the process of getting a property under contract and then assigning it to a cash buyer. 

In Massachusetts, is it as simple as using a P&S with the seller, then using an Assignment of Contract for with the Cash buyer?

Also, is my understanding correct that Massachusetts does not use Title companies for closing, they use Real Estate Attorneys?

Thank you for your support.