Automated WordPress plugin creator? No, I don't believe so. The WordPress.org site does have some very detailed tutorials telling how to create WordPress plugins, though. Once you get going it shouldn't be difficult. Look at the source code of other plugins for help! It's the best way to learn.
There's no generator that I'm aware of, but creating a WordPress plugin is fairly simple. WordPress is extremely flexible and easy to work with. I'd try looking at the Hello Dolly plugin that comes as default, and also reading this tutorial: net.tutsplus . com/tutorials/wordpress/creating-a-custom-wordpress-plugin-from-scratch/ That may help you.