A85: Re: Assembly virus


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A85: Re: Assembly virus




I think most of us probably crash our calculators every day anyways :(.
Certainly you could write a virus.  I would think it would be more fun to
write one that just made all of the variables grow, little by little.  Or
maybe it did nothing but spread itself across during file transfer.  Once
you crash someone's calc, it would be harder to pass it on to the next
person.  Anyways, learn some assembly and you can then program your own
virus.  Good luck (but i don't really think writing most viruses requires
too many "mad skillz").

-mike pearce

-----Original Message-----
From: Matt Cooper <mnemonicdevice@hotmail.com>
To: assembly-85@lists.ticalc.org <assembly-85@lists.ticalc.org>
Date: Monday, March 08, 1999 8:28 PM
Subject: A85: Assembly virus


>
>Alright, I know this couldn't possibly work else it would have been done
>before, but why couldn't someone write code that would use Usgard's TSR
>calls to attach itself to the system and then wreak havoc with the
>system somehow.  My thought was perhaps have it increment a 32bit
>location, then read a 16bit location which is the less-significant side
>of the 32bit value.  If that 16bit value = 00 (basically.. the 256th
>time Usgard is loaded) then hang the system.  Or delete variables.  Or
>diddle the first 7 bytes of Usgard so that IT will hang the calc.  Etc.
>
>I don't have the mad skillz to do this, but if I did, I would!
>
>--Matt Cooper
>
>
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