4 ms·

Can you explain it plainly? I seems like there's a funny joke or irony in there but I don't have the experience to detect it properly.

by edoceo 5y ago

PaulBGD_ 5y ago
There was a recent 0 day in iMessage relating to image parsing, in a open library that Apple used. I’m not sure why the poster is being so vague, but the blog post is an interesting read. The second comment just seems like a dig at apple in general.
- vmception 5y ago
  and the software patent system with the supporting wording in the US constitution there are levels to this absurdity
  - acchow 5y ago
    you have quite the curious style in conveying information implicitly
vmception 5y ago
NSO Group’s iOS exploit was sold to nation states who spied on journalists and dissidents with it. The code behind it got leaked a few days ago and its a mind bending process that essentially did what I described, using an old image decompression algorithm. Its so absurd and also perceptive that making fun of it is the best way to process it.
acchow 5y ago
> Maybe they should find logic gates in the decompression algorithm There is an iMessage zero-click exploit from NSO Group used in the wild. Project Zero did a deep dive on it: https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-i... After a series of steps, the exploit eventually arrives at the need to do general computation. They achieve this by utilizing a part of the JBIG2 decompression algorithm, effectively using the phases of decompression to emulate logic gates to eventually build NAND gates, and from that a simple instruction set for a virtual computer. They then execute arbitrary code on this virtual machine. > use those to emulate a threaded cpu, and launch a multithreaded decoding process on that cpu This is a tongue-in-cheek joke I suppose. Even if you built multi-threading support on the virtual machine, it is still an emulated environment running within a single-threaded decompression algorithm. So it is effectively single-threaded on the real machine. > which finds the original decompression process in memory and executes on the same image being decompressed The original exploit is quite meta, so OP is just making a meta joke here. When I read the comment I suspected immediately that it was a joke in reference to the above exploit, but it was cryptic enough that I wasn't quite sure.

Can you explain it plainly? I seems like there's a funny joke or irony in there but I don't have the experience to detect it properly.

by edoceo 5y ago

Can you explain it plainly? I seems like there's a funny joke or irony in there but I don't have the experience to detect it properly.

PaulBGD_ 5y ago

There was a recent 0 day in iMessage relating to image parsing, in a open library that Apple used. I’m not sure why the poster is being so vague, but the blog post is an interesting read. The second comment just seems like a dig at apple in general.

vmception 5y ago
and the software patent system with the supporting wording in the US constitution there are levels to this absurdity
- acchow 5y ago
  you have quite the curious style in conveying information implicitly

vmception 5y ago

NSO Group’s iOS exploit was sold to nation states who spied on journalists and dissidents with it. The code behind it got leaked a few days ago and its a mind bending process that essentially did what I described, using an old image decompression algorithm. Its so absurd and also perceptive that making fun of it is the best way to process it.

acchow 5y ago

> Maybe they should find logic gates in the decompression algorithm There is an iMessage zero-click exploit from NSO Group used in the wild. Project Zero did a deep dive on it: https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-i... After a series of steps, the exploit eventually arrives at the need to do general computation. They achieve this by utilizing a part of the JBIG2 decompression algorithm, effectively using the phases of decompression to emulate logic gates to eventually build NAND gates, and from that a simple instruction set for a virtual computer. They then execute arbitrary code on this virtual machine. > use those to emulate a threaded cpu, and launch a multithreaded decoding process on that cpu This is a tongue-in-cheek joke I suppose. Even if you built multi-threading support on the virtual machine, it is still an emulated environment running within a single-threaded decompression algorithm. So it is effectively single-threaded on the real machine. > which finds the original decompression process in memory and executes on the same image being decompressed The original exploit is quite meta, so OP is just making a meta joke here. When I read the comment I suspected immediately that it was a joke in reference to the above exploit, but it was cryptic enough that I wasn't quite sure.