So can someone help me null a software step by step, so I can learn too . I have the code source, but don't know how to do, Thanks
The #1 most useful tools to know and understand is the browser console (dev tools), second and not least is knowing how to manipulate your hosts file.
If you read the comments above, there is No step by step. Each script is different (some similar). With coding experience, learning and reading it becomes easier.
Follow some of the instructions above, play around with some scripts and when you get stuck, make a post about it.
We recsntly had 2 excellent new ressources from a novice coder, that nobody ever had before. He started the process, asked for help, found a way and madenit happen. He went from zero to expert javascript nuller in 24 hrs....
Help yourself, get things started and the community will help, when the time comes.
Hints
You are looking for licensing information and how it works
You are looking for backlinks (starts with http)
You want to cancel auto-update and other callbacks (starts with http)
Some developpers will put a blind (hidden) pixel image somewhere (usually during install) that calls back to their server. This lets them know someone installed their software and other usefull info such as Server IP, Browser and desktop info, etc... You want to find it and remove it.
Some scripts automatically check for updates, same as above , it gives away server info to the dev. You want to disable this functionality.
Some developpers have hidden code (encoded or ibfuscated) that only runs when it detects a nulled or invalid license. This can bring havoc, the hidden code can do anything, but mostly they wipe your DB (irrevokably). Discover and decode (or deobfuscate) all hidden code to check for maljcious intent.
Licenses (once found) cannoften be null with a simple return true; or php continue;
The meat of nulling a script is not bypassing the license, this is often achieved easily. The real game is finding all the ways the developper tries to know about you, your server and your installation. Often installing a nulled triggers a backdoor, or sends phpmail emails out with install information, you have to find and prevent it.
Nulled scripts (unless they professionally nulled or cracked) will always leak information to the developper. Nulled scripts are not for commercial use. They are to Try Before You Buy. They are for reverse engineering research and learning. Not for making money from other peoples work.
^this lesson is lost on most people. 95% of nullcavd users downlaod and install scripts to use commercially, that is why very little effort is put into removing callbacks and backlinks by nullerz. Every nulled script on nullcave or elsewhere is very dangerous to use. Never use nulled scripts commercially. Ever. You will get caught, you will get sued, you will lose a lot more than the price of an Envato subscrition, don't be stupid.
GreyHat not BlackHat
We do this for lulz, open source activism and to keep current in "best practises".