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Offline weirdamiTopic starter

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AREXX viruses?
« on: March 11, 2004, 09:24:22 AM »
My wandering brain strikes again! :lol:

Are there any AREXX viruses? Is such a thing possible? I'm asking because I remembered something about how visual basic script viruses were causing big problems with Windows users.

Same question about SHEEP, if anything really is known about what I here's going to be the AREXX replacement. (If that bit of info has changed, let me know.  :oops: )
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Offline carls

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Re: AREXX viruses?
« Reply #1 on: March 11, 2004, 09:32:43 AM »
I've never heard of something like that but if you're unsure, just look at the script source code before executing it.

I Windows, VBA/VBScript viruses are made possible because you can embed such macros and scripts in the actual documents. AFAIK, all ARexx-enabled applications on AmigaOS requires the ARexx scripts to be individual files. This means that no script will be automatically executed just because you opened a spreadsheet.

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Offline Piru

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Re: AREXX viruses?
« Reply #2 on: March 11, 2004, 10:18:17 AM »
Quote
Are there any AREXX viruses?

At least I haven't heard of any in the wild.

I've heard of a "proof of concept" demonstrations on multiview + AREXX combination, though.

Quote
Is such a thing possible?

Most certainly. There are several holes in amiga systems that allow execution of embedded AREXX scripts.

One is multiview displaying amigaguide document. You can embed a script that is executed once the document is displayed.

Another is a MUI string formatting code combined with APIPE:, such constructs could be sent via email or embedded to malicious web pages (though most mailers and browsers have been fixed by now).

Both vulnerabilities have been demonstrated successfully. I would imagine the only reason why such viruses don't exist is the very small amiga userbase (and many using their PC to browse and read email anyway).
 

Offline ptek

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Re: AREXX viruses?
« Reply #3 on: March 11, 2004, 10:51:33 AM »
SHEEP !

BTW : What happened to SHEEP ? Is it dead ? Never heard any news about it ...

Same question to AmigaDE? Did it turned into a ghost ?!
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Offline mikeymike

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Re: AREXX viruses?
« Reply #4 on: March 11, 2004, 10:59:00 AM »
Well just like people are stupid enough to open executable email attachments in Windows, they could be stupid enough to open arexx scripts.

Admittedly once MS applications are out of the loop, the number of vectors for attack drop sharply :-)