How to jail break iphone 4s verizon with a bad esn to work on any gsm sim?

I'm about to buy iphone 4s which is used i'm purchasing it from ebay and it is a verizon iphone which is a cdma company but iphone 4s has support for both cdma and gsm there are no different models for cdma and gsm. But will the gsm be unlocked if not how to jailbreak it but the biggest problem is that the iphone has a bad esn

Bad ESN = stolen phone.

So the question is how do you get a stolen CDMA phone to work on a GSM network?

You don't. The GSM capability of the iPhone 4S is for global use.

Actually, Verizon will unlock it under the right circumstances. Bad ESN = wrong circumstances.