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2023-08-17 01:35

ws

Registered: Apr 2012
Posts: 251

Malicious Packer?

I was interested in this entry Galaxy Cargo + Poker because i wanted to see if the badness of the raster routine had anything to do with PAL/NTSC timing. It turned out, that it is just very badly coded.

What puzzled me was, that the depacker was partially obfuscated by an EOR routine. I reverted that and started the program again, but for fun i also altered the chars in the SYS line to WS/G*P. Prog started and all of a sudden, my attached disk was empty, named "PREPARE TO DIE!". (I probably could have used Ians Unp64 V2.36, which gives a depacked largefile, but what i wanted was to have just an de-ofuscated original binary.) My mistake was to not examine the code any further.

This packer actually has a routine checking if the sysline was altered, and if so, the routine will format your currently inserted Disk or VOLUME to "PREPARE TO DIE!". Imagine if one had mounted a flashdrive or even an entire harddisk. Quite dangerous.

Does anybody know something about this >PWR< Packer(?) thing?

Are there any other examples of malicious C64 code like this, like screwing up your disk if things have been altered?

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2024-01-20 12:52

chatGPZ

Registered: Dec 2001
Posts: 11349

Works offline just fine. And nothing has been "taken away", ever.

Edit: correction, the PS3 Store "closed" recently (you can no more buy games - but of course still play what you have bought). About 15 years after anyone would want to use it.

2024-01-20 19:17

ws

Registered: Apr 2012
Posts: 251

To chime in on that: funny, i have just a few months ago ripped all my PS3 games from the console and managed to put them in RPCS3. Well surely i cannot play any online stuff, but then again: i have none of the games that require that. So. Yeah, it could be seen as kind of a malicious business model :-D

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