how do you guys null a script or plugin

God day to you all,
i just wanted to ask if someone can help me by teaching me how to null scripts.

they decode it 1st, google about decoding methods. then they read it and find the license check script and reverse it. to make it doesnt work and accepts anythings

There's a wordpress plugin I really want nulled!!!

But it's sold here, so I can't ask for that. It's Revive Old Post Wordpress Plugin

I did try searching the internet for a nulled version. You know, torrents, blackhat forums, and I came out empty. The guys selling it are either Extremely good at getting any nulled version removed, or they're just that good at creating it that it can't be nulled.

Oh well, I don't know why I posted. Actually, if someone has the nulled version of the plugin, hit me up. I mean, don't go cracking it anything, that would be illegal. But if you already have a cracked version of it and care to share, do share by sending me a PM XD