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From: n074ev@tamuts.tamu.edu (Christopher Walton)
Newsgroups: comp.sys.amiga
Subject: Re: Copy protection (was Re: Awesome! No I am Pi**ed!)
Message-ID: <10696@helios.TAMU.EDU>
Date: 6 Dec 90 00:07:38 GMT
References: <JKH.90Dec3092012@bambam.pcs.com> <1990Dec5.041002.453@sbcs.sunysb.edu> <1990Dec5.205822.216@evax.arl.utexas.edu>
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In article <1990Dec5.205822.216@evax.arl.utexas.edu> hill@evax.arl.utexas.edu (Adam Hill) writes:
>
>  Ok how about this scheme:
>
>   A program is encrypted. The program is DECRYPTED by a program who searches
>  the ENCRYPTED program for the key. Heck.. You could embed multiple keys in 
>  program and use 1 or 2 of them to defeat people that look at where the disk 
>  is seeking to.
>
>Just my 1/2 piece of kindling .... :-)
>-- 
> adam hill                                 
> hill@evax.arl.utexas.edu                        Make Up Your Own Mind.. AMIGA!
>                                                   Amiga... Multimedia NOW  
> Most Common Phrase at DevCon '90 - "Shhhhhhh.."  

   I seriously hope you are kidding!  This is a SIMPLE thing to over come.
All you do is look at the bootblock, if it is loading from boot block, or
the startup-seq. and then read the code of the program that is doing the 
decrypting to see where it goes, and how many times it goes somewhere, and
continiue to look until the game or whatever it is actually starts and       
finishes.   This is so simple I have seen a program do this auto-magically 
by reading the code, and out put a de-crypted file, and whala, no protection.

Very simple technique, but for personal use it might be OK, but not for
big time marketed things.  By the way, some, I think they should be illegal,
copy programs like RAW COPY, do this as well with there parameters.

Christopher Walton
n074ev@tamuts.tamu.edu