On Sat, 22 Dec 2001, Joe Programmer wrote:
> But at some point, your app is going to have to do
>
>   if (validKeyEntered)
>      // do program
>   else
>      // refuse to do program
>
> and all the crackers have to do is insert a NOP in
> place of the if.

  it is much nicer to change the BNE to BEQ. hence, if you are
  a person with a valid key, it doesn't work.. otherwise, it does *g*

> You can read all about why it's a waste of time to try
> to make your app uncrackable in a paper Aaron Ardiri
> wrote.  Search the archives -- a link to it is in
> there somewhere.

  http://oasis.palm.com/dev/kb/papers/2169.cfm

  another technique not listed there is to release a trojan horse
  and, they'll never trust poking with your code again (joking)

// az
[EMAIL PROTECTED]
http://www.ardiri.com/


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