Re: How to generate a Windows style license key

tomstdenis_at_gmail.com
Date: 09/29/05 

Date: 29 Sep 2005 06:25:58 -0700

post...@big-numbers.com wrote:
> >>>I break your license algorithm along with the license algorithms of 200
> >>other programs. I put them on a CD and sell them on the corner for $4
> >>each or something. Wow that's hard.
>
> Go ahead collect all the keys you want.
> Keybuster.com has it's Key ONLINE so you can just Activate or
> Deactivate a Key.
> Once you think a Key is being mis-used you can de-activate that key and
> the application does not work anymore
> cause it uses an ONLINE KEY CHECK.
> That's the beauty and difference of that service compared to other
> Keygens etc.

...

Um ... why wouldn't I just patch your binary to not even bother with
the key call?

I mean seriously, in 2005, people are still fooled into thinking you
can not run general purpose code on a general purpose computer?

You have a

call secret_key_func
test eax,eax
jnz FAILED_HAX0RZ

I replace that jnz with jz or heck a nop

voila. Done.

Now not all software is that trivial but judging by the numbers I'd say
it's a losing battle.

Tom