Dmytro Oleksiuk 💥 d_olex@mastodon.social Profile picture
zero-fucks-given infosec research | contacts: https://t.co/AB3QnrPja0 | 🇺🇦 Ukraine needs your help to kill Ruϟϟian zombies: https://t.co/ihU9OLujfk
Jul 25, 2022 7 tweets 3 min read
So, what's wrong with #CosmicStrand UEFI implant from the first glance on its sample? What exactly lessons APT malware developers can learn from open source projects? 🧵⬇️ First, it is really trivial to detect this malware presence by patched nt!KiFilterFiberContext() function in order to disable PatchGuard. My UEFI rootkit is not interfering with PatchGuard at all, it also not using any permanent in-memory patches or callbacks, only temporary ones
Jul 9, 2022 4 tweets 1 min read
Cool project, that's how you suppose to do it right!
PS: the darkness tempts me to break my faith in the omnipotence of IDA 6.1 and Python 2.7 😂 It's not a joke, by the way. I have IDA 7.6 or something relatively recent to use plugins wrote by other people, but my main battle version is an early 6. something. On my typical test cases it did not evolved much in disassembly quality, so why bother with updates
May 31, 2022 4 tweets 1 min read
Is there any good recommendations for unofficial Apple service centers who can do complicated board-level repair of latest intel machines and accepts foreign customers? Exact country and budget doesn’t matter This T2 chip with hardware encrypted soldered down SSD is buried few of my research projects (usually I’m not bothering to backup or preserve this crap) so I’m looking the ways to get my data back
May 10, 2021 20 tweets 9 min read
I have a new weird obsession: DAT recorders! So, here's a really long thread about this outstanding piece of obsolete tech ⬇️⬇️⬇️ DAT was introduced by Sony in 1987 as recording and playback medium for digital audio. It adopted 16-bit PCM format with 44.1, 48 or 32 kHz of sampling rate. It's like an audio CD but stored on the magnetic tape. DAT cassette is about half size of the compact cassette
Jun 22, 2017 6 tweets 2 min read
Rogue PCI-E/FireWire/Thunderbolt/etc. device can exploit platform firmware vulns to execute arbitrary System Management Mode code [1/x] ImageImage Normally SMM memory is protected against rogue DMA using TSEGMB register, discovered vulnerability allows to break this mechanism [2/x]