MyBB Community Forums

I am looking for a script/plugin that syncs users between mybb and wordpress users.
I searched all through but didn't find anything. I see there are too many threads here about that but none help

Here is what i want to do:
when a user registers on wordpress, he can login with the same details on mybb. AND VICE VERSA
i found a plugin that did it but it could not allow wordpress registrations. (it didn't work too)

Please can anyone guide me a way. I'm desperate

I'm looking for the same thing! I'm afraid there's no such a plugin, it requires a lot of time. Programmers and developers are doing it from around 150$-250$!