Real Understanding Of Serial Generation

It is as soon as there is one leaked valid key

there are already leaked keys

Originally Posted by posiedon

there are already leaked keys

But we can blacklist the leaked keys in next version. Right? Or, if program uses the online license check method, we could disable the keys.
The point is that the hacker should not be able to create the keygen.

Why you need keygen if you have one valid key and it's not blaclisted yet?
You can enter look what winrar do it, make dump of unpacked code, rebuild and go on....so 1000bitRSA or 2000bitRSA it doesn't matter until it hasn't good release...

[swork3]

one other thing that came to my mind - what is if you "simply" patch it but you do not find the call home?
if i would make an protection i would try to make an serial number independant (hidden) connection to my
company - and you would be happy that you patched the jump...

Well supprisingly your always know if it calls home, thnx to SP2 for XP or Zone Alarm or Port Explorer, my Fav at the moment... I actually brought this one too, though I could not crack it... Sigh..

But with the above it will tell you every time it wants to talk then just sniff the packets to find out what it wants...


Pozzy!

The obvious conclusion imho, is that keygens are the best solution. The great thing with a keygen (unlike *most* patches), is that there's a pretty good chance it will work with subsequent releases of the same app.

Once you have mastered the art of patching, it is definitely worthwhile attempting to try creating a keygen. It helps you learn an awful lot more about reverse-engineering.

Of course, there are times when a patch and a keygen is the best solution. I can remember downloading keygens for SubmitWolf 5.x and the keys they generated all got accepted, no problem. But when it did it secondary online check to see if you were licenced to download the updates/addons it failed. This is why I created a keygen and patch combined, and it worked a treat.

But let's be honest, both methods are worthy ways of allowing free software to proliferate. Do whatever you're comfortable with.