@cirosec@infosec.exchange avatar cirosec , to random German

This multi-part blog series is discussing an undocumented feature of Windows: instrumentation callbacks (ICs).

In part 4 we cover ICs from a more theoretical standpoint. Mainly restrictions on unsetting them, how set ICs can be detected and how new ones can be prevented from being set.

Learn more at https://cirosec.de/en/news/windows-instrumentation-callbacks-part-4/

ALT
@mattst88@fosstodon.org avatar mattst88 , to random

After a ton of work, I've finally gotten over my perfectionism and made https://github.com/mattst88/ip32prom-decompiler public.

It decompiles the PROM firmware for the Silicon Graphics O2 (IP32) and reassembles it into a bit-identical image.

Even if that doesn't sound interesting to you, the README and reverse-engineering document should make for a fun read.

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@LeoDJ@chaos.social avatar LeoDJ , to random

Does anybody have some experience with 'hacking' Stratasys (F900) printers?
I'm specifically looking for the ability to use 3rd party filaments without the OpenAM software. (Sends stuff to their server and costs too much)

So one probably needs to customize the profiles in the Insight slicer software and maybe even something in the printer software itself?
:BoostOK:

(I'm already aware of the cartridge reversing efforts: https://github.com/bvanheu/stratatools )

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@madmoose@mastodon.social avatar madmoose , to random

The Dune map renderer is complete!

You can navigate around the map here: https://thomas.fach-pedersen.net/dune/map/

Click the arrow icons or use the arrow keys on your keyboard.

If you want the globe view, you'll have to navigate to https://thomas.fach-pedersen.net/dune/globe/, I haven't put them into one app yet :)

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@mike@mikecoats.social avatar mike , to random

My proofs of concept are complete!

I've managed to print "Hello, world!" on my 4610-TG3 from some Rust code running on an ESP32-C6. I've also dumped the opening screens from Zork to get a feel for where the project's going.

https://mikecoats.social/@mike/115748543630953329

The opening of Zork, output on a receipt printer.

ALT
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@maehw@chaos.social avatar maehw , to random German

Hi everyone. I don't understand the following assembly code and looking for explanations. I am not sure the Ghidra decompiler is doing the right thing here. Having trouble understanding the loop mnemonic here (loop a5, LAB_400f7cd4). a5 holds the loop count for the zero overhead loop. But what does the label hold? The end, i.e. where to continue after all iterations? Where does the loop begin and where is the end of an iteration? I am confused by the docs.

ALT
@poisonpunk@mastodon.social avatar poisonpunk , to random

dives into the case of an officer of public works in the former named Valerij Černohajev, who wrote, in very specific terms, a manuscript describing a .
his daughter & her husband have translated the document & ask any expert to peer review it so it can be scientifically collaborated & verified.
here's the link:

https://www.engineeringinfinitybook.com/

watch them explain it all to here

https://youtu.be/-LSUrmfl46E?

poisonpunk OP ,
@poisonpunk@mastodon.social avatar
@alexandreborges@infosec.exchange avatar alexandreborges , to random

Decomp2dbg:

"decomp2dbg aims to shorten the gap of context switching between decompiler and debugger by introducing a generic API for decompiler-to-debugger symbol syncing."

https://github.com/mahaloz/decomp2dbg

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@codev@mastodon.world avatar codev , to random

Greetings, fellow mastodonians 🐘💻️️

I’m an Android reverse engineer — think digital archaeologist, but for APKs instead of fossils.

Excited to hang out here, meet cool people, and resist the urge to decompile everything I see.

Beep boop, let’s vibe.😎 😎 😎



@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random

Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican

https://simonwillison.net/2025/Nov/9/gpt-5-codex-mini/

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random
@infosecdj@infosec.exchange avatar infosecdj , to random

Oh my, it is already. Time flies when you're busy, I guess!

This is one of them older decaps, apparently a L6284 by ST. I am not sure about the exact function of this one, but it does look like a driver of some sort. Literally half the die (on the right) is taken by the output driver circuitry. The rest is populated by a variety of analog and digital IP, a lot of it quite interesting in structure. The digital control unit sits right in the centre, a blob of dense standard cell circuitry. I suggest taking some time to explore the die!

SiPron map: https://siliconprawn.org/map/st/l6284/infosecdj_mz_nikon20x/

ALT
@h4ckernews@mastodon.social avatar h4ckernews Bot , to random

Reverse-engineered CUPS driver for Phomemo receipt/label printers

https://github.com/vivier/phomemo-tools

@h4ckernews@mastodon.social avatar h4ckernews Bot , to random