Well really speaking not much can be done except asking your host to shut you down. If you live in the US/UK with strict laws you can be prosecuted, anywhere else they may be unable to do it.
But whats the point of starting a community with a nulled software? It may be malicious and your users wont trust you. It seems a stupid idea, ultimately you will also try for adsense and other ad platforms where you will anyway be rejected so well...