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Re: Need someone to do a little cracking

Subject: Re: Need someone to do a little cracking
From: "Michael J. Mahon" <mjmahon@aol.com>
Date: Mon, 01 Jun 2009 23:29:14 -0700
In-reply-to: <mpt8251ooia7ej5nncv10vrei27ic19rfc@4ax.com>
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sirghoul@optonline.net wrote:

I have an original of the program RSVP that I've been trying to convert to .dsk

Converted the disk to normal dos with the b942/be48/copya routine. Boots cleanly, but there seem to be at least 2 disk
check routines:

1 in the file ddmover

1 in the file main.

Anyone want to take a crack at this??

download the images from:

http://www.sendspace.com/file/7vy5nt


FWIW, the DDMOVER program contains a decryption routine at $8CE1 that
does a "running" or "chain" EOR to decrypt the code stored at $8AFA to
$8BFB.

Patching the RTS at $8D26 to BRK and running the code will reveal
the decrypted code.

-michael

******** Note new website URL ********

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Home page:  http://home.comcast.net/~mjmahon/

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