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Subject: Re: Chessmaster in Fritz GUI?? Legal

Author: Shep

Date: 04:58:59 07/26/99

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On July 24, 1999 at 00:16:38, Dave Gomboc wrote:

>On July 23, 1999 at 10:52:29, Shep wrote:
>
>>On July 23, 1999 at 07:59:11, Dave Gomboc wrote:
>>
>>>Just figure out where the engine is embedded in the executable and what the
>>>interface to it is, and hook in there. ;-)
>>
>>Maybe I will give it a try, but don't expect too much (the best I accomplished
>>in that field was ripping the music off most games back in the C64 area :).
>>The version string should give a good hint where to look (at least CM 5500 had
>>something like "The King v2.55" in its exe somewhere).
>
>Ah, yes.  I had lots of fun on the C64 when I was a kid.  I even disassembled
>parts of Sargon II back then.  They had self-modifying code to try to throw you
>off, that was pretty cool.  Tracing through, some part got executed, then a bit
>later it would start overwriting the earlier bit, then jump back to the earlier
>part (at an address that would have given an illegal opcode -- not even a C64
>undocumented instruction) and start executing the new code.

Yup, it's good these times are over. At least for that reason. ;-)


>>>Okay, it is possible that they didn't compile the engine as a static library
>>>within the .exe, that would make it more difficult...
>>
>>Still a master hacker's job, fiddling with a compiled executable. :-|
>
>Maybe you'll get lucky, did they strip the symbol table?

I'll check it. However, I am not actually one of the fittest in x86 assembly, so
maybe someone else will have better chances of success... :-(

---
Shep



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