What license about unity's default scripts

What license about unity’s default scripts likes CharacterMotor, FPSController and so on.

I want to redistribute C# version of CharacterMotor script which I converted via my Homepage. Is it permitted?

It is certainly authorized to distribute free versions of those scripts (under open source license or just free license).

As far as I know, every resources given by UT in tutorial and examples can be used for commercial games. But, I don’t think that it will be fair to sell them.