Mykola Grymalyuk
@khronokernel
Followers
4,486
Following
99
Media
96
Statuses
293
Project lead of OpenCore Legacy Patcher. Researcher and Developer at RIPEDA Consulting. Proud Ukrainian 🇺🇦
Alberta, Canada
Joined July 2020
Don't wanna be here?
Send us removal request.
Explore trending content on Musk Viewer
Venezuela
• 1253856 Tweets
Doom
• 265294 Tweets
Marvel
• 239315 Tweets
#BINIatKCONLA2024
• 225080 Tweets
#SDCC
• 214284 Tweets
Robert Downey Jr
• 211289 Tweets
#บวงสรวงJACKANDJOKER
• 140439 Tweets
God Kabir Creator Of Universe
• 135272 Tweets
ワンフェス
• 105085 Tweets
The MCU
• 83093 Tweets
#UFC304
• 76928 Tweets
Cruzeiro
• 71821 Tweets
Yankees
• 61291 Tweets
Gallardo
• 58703 Tweets
Russo
• 54253 Tweets
Apollo
• 52702 Tweets
Fantastic Four
• 49369 Tweets
Botafogo
• 49042 Tweets
Kang
• 42891 Tweets
#ニノさん
• 24555 Tweets
Cássio
• 23517 Tweets
Iron Man
• 22060 Tweets
Kevin Feige
• 20523 Tweets
Fortaleza
• 19641 Tweets
設営完了
• 17364 Tweets
アベンジャーズ
• 16526 Tweets
勇気100
• 15970 Tweets
Doutor Destino
• 14834 Tweets
Tony Stark
• 13807 Tweets
Barreal
• 12983 Tweets
ディケイド
• 12585 Tweets
Onana
• 12395 Tweets
Pedro Pascal
• 11814 Tweets
Martinelli
• 11814 Tweets
vingadores
• 10610 Tweets
After many months of work, we’ve finally gotten macOS Ventura running on legacy Metal GPUs!
This includes my early 2008 Mac Pro (Nvidia Kepler and AMD GCN 1), 2012 Mac mini, 2014 Mac mini and 2014 5k iMac!
43
143
960
With much anticipation, we're proud to announce OpenCore Legacy Patcher 1.0.0! And with it, macOS Sonoma support!
This release now supports 83 unsupported Macs, allowing all fo them to see one more year of the latest macOS release!
52
158
819
After many months of heavy anticipation, OpenCore Legacy Patcher 0.5.0 adds support for macOS Ventura 🎉
With this release, most people with a 2012 or newer Mac listed below should be able to install Apple's latest OS with ease!
32
98
446
After much anticipation, OpenCore Legacy Patcher v0.6.0 has finally released! And with it, hardware support for so many more machines on macOS Ventura, including non-Metal GPUs!
23
86
401
For those curious why iPhone Mirroring is a T2/Apple Silicon feature (ie. not on the 2019 iMac), it seems Apple uses hardware device attestation for the pairing.
So on older machines like with OpenCore Legacy Patcher (or Hackintoshes), the feature unfortunately does not work:
12
23
395
Another milestone hit with legacy Macs and macOS Sonoma: 3802-based GPU accel! Includes hardware such as Intel’s Ivy Bridge and Haswell, and Nvidia’s Kepler.
Amazing work from the dev team, especially EduCovas. And many thanks to everyone who’ve donated:
16
42
340
For the first time outside of Cupertino Headquarters, a 2013 Trash Can Mac Pro booted macOS Ventura!
Insanely generous person donated a 2013 Mac Pro to us for development, and with fairly quick turn around we got the machine booting!
7
42
318
Major milestone hit within the OpenCore Legacy Patcher Project, we got automatic Rosetta Cryptex installed on older, pre-AVX2.0 Macs!
This means no more manual OS.dmg swapping, and restoration of easy to install OS updates for Ivy Bridge and older!
Long live Penryn!
17
27
290
With Sonoma a day away, wanted to give the community a bit of a heads up with where OpenCore Legacy Patcher is.
We were hoping for an October release, and so unfortunately won’t have day 1 support tomorrow. Instead we'll be releasing OCLP 1.0.0 on Oct 2:
8
34
249
Bit of a tangent from my usual legacy Mac patching, however finally figured out how to bypass Apple’s VM limit on Apple silicon Macs with macOS Guest VMs!
Below are 9 VMs running at once, and surprisingly usable!
Blog:
14
34
216
After many requests, the team and I are proud to announce we’ve opened up donations for OpenCore Legacy Patcher!
If you enjoy what we do, we would greatly appreciate your support. This greatly helps us purchase needed hardware to improve the project!
5
40
192
Back home in Ukraine, today is our Christmas. And to celebrate, I believe it's fitting to release an early build of non-Metal Graphics Acceleration to the public!
Insane work from our amazing devs, this wouldn't be possible without EduCovas and
@ASentientBot
!
12
18
185
First Apple CVE 🥳 CVE-2024-27822
Funniest part is I didn’t even know if Apple read my report, had someone else reach out and congratulate me lol
8
8
149
Bit of a mini update on OpenCore Legacy Patcher, we’ve published our binaries as a preview for macOS Sonoma support this fall!
Currently targets Macs with Metal-based GPUs, more info can be found below:
4
25
124
So while working on OCLP, I found a oddly terrifying statistic: Our project currently supports 77 Mac models...
- 20 iMacs
- 7 MacBooks
- 25 MacBook Pros
- 11 MacBook Airs
- 8 Mac minis
- 4 Mac Pros
- 2 Xserves
This includes Macs from 2017 all the way back to 2007!
4
11
120
With macOS Sonoma Beta 6, landscape wallpaper is the default again. Hasn’t been the case since Catalina!
8
3
113
Finally got a Vega 64 working in Ventura with pre-AVX2.0 hardware! Had to hot rod the MacPro3,1, GPU barely fits ;p
But she boots! Big thanks to one of our gracious users, this Vega 64 was donated by them for development.
4
10
108
Happy 2nd birthday to OpenCore Legacy Patcher!
2 years ago today, we launched our initial developer preview for Big Sur. Now 2 years later, we've added Monterey and Ventura to the list!
Thank you everyone for supporting our project for this long!
7
13
105
Just hit a massive milestone, 1 million downloads on OpenCore Legacy Patcher! Insane to think just how many people rely on our project to get software support and that some of them are even Macs from 2007/2008!
Thank you to the devs and the community for all the support!
8
11
104
Otherwise, no proper time estimate can be given for mainline support in OpenCore Legacy Patcher, but we hope everyone’s excited for what’s to come!
5
0
96
As I procrastinate finals, thought I’d write about macOS’s System Integrity Protection and clear up some misconceptions with this setting:
3
20
91
Insane props to
@ASentientBot
and EduCovas for working through this!
Especially
@ASentientBot
, without his amazing work on DSCE we wouldn’t be able to get Ventura acceleration today. He’s spent so much work on this amazing repo:
5
6
87
Another blog post, this time with a Parallels Desktop exploit!
CVE-2024-34331: Privilege escalation through malicious createinstallmedia binary:
3
25
84
Hope everyone’s excited for the coming release, we’re planning for the same hardware supported range as with OCLP and Ventura.
Here’s just a small sample of machines running Sonoma internally:
6
5
83
For more technical information on Sonoma’s challenges with OpenCore Legacy Patcher, see below.
These are not simple problems, so we’re unlikely to release support anytime soon. A rough estimate is 6 months, but hopefully we’ll pull through a bit sooner!
2
12
81
After much work and head bashing, we’ve finally been able to resolve the Kepler issue plaguing macOS 12.5! Nvidia lives another day!
Fix is implemented in OpenCore Legacy Patcher v0.4.10:
5
9
81
This also marks OpenCore Legacy Patcher’s 4th major OS. Crazy to think we’ve lived through Big Sur, Monterey, Ventura and now Sonoma!
Don’t know how many more years Apple will give us, but it’s been amazing journey up-to now.
4
1
79
Still a fair bit left to do before general public beta testing, but honestly impressed major hurdles like KDK-less (Intel/Kepler), AVX2 and legacy Metal are being surpassed before Ventura's launch.
Lots of work left, but it's less than before ;p
1
1
69
And as always, amazing work from EduCovas and
@ASentientBot
! This project wouldn’t be where it is today without these talented developers.
As well as thank you to everyone who’ve donated hardware to our project, the Vega support you see today is thanks to our users!
3
4
69
This release wouldn’t have been possible without the community supporting us, and all the developers who've poured endless hours into this project. Thank you to EduCovas,
@asentientbot
,
@dhinakg
and so many more amazing developers. We couldn’t have gotten this far without you!
1
1
69
Was taking a peak at Apple’s Rapid Security Response system in 13.2, seems quite interesting.
If you install 13.2 (a) on a system with a broken APFS seal (ie. root patching), macOS will install the RSR update and revert the APFS snapshot in the process to the last sealed version
1
13
66
Still a lot of work left to do, namely power management needs tuning but otherwise the machine runs great!
Early support for the 2013 Mac Pro should land in OCLP 0.5.1, and hopefully with the following releases we’ll get those little quirks ironed out!
4
4
65
A second blog less than a week after? Well guess so!
This time with CVE-2024-27822: macOS PackageKit Privilege Escalation though ZSH env files:
3
16
65
We’re hoping to release sometime next week, however we’re keeping a watchful eye in case Apple throws a curve ball our way. Apple doesn’t like making our lives easy ;p
2
1
63
There's still a lot of work remaining, but we hoping to have early beta tests in the coming month depending how other challenges go. But proper release is still a ways off.
Otherwise we hope everyone’s excited for this fall!
2
2
60
Not sure if anyone else noticed, but in
#macOS
Ventura Apple added Mellanox Ethernet support!
Specifically for those based off the Linux MLX5 driver, which include some 100Gbe and 200Gbe devices like the ConnectX-6!
AppleEthernetMLX5.kext also supports Intel and Apple Silicon:
4
14
58
Finally got to finish the legacy Metal on Ventura blog post!
It’s a 2 part post, 1st for macOS Big Sur/Mont changes and 2nd for Ventura shenanigans. This post does hide a lot of the dead ends we faced while developing however ;p
8
9
59
Compare this to Apple’s lineup of 38 in Ventura:
- 9 iMacs
- 1 iMac Pro
- 1 MacBook
- 17 MacBook Pros
- 6 MacBook Airs
- 2 Mac minis
- 1 Mac Pro
- 1 Mac Studio
Always felt we were heavily understaffed with our small group of hobbyists, but this puts it to a whole new level haha
2
2
58
Mini follow up to CVE-2024-27822, Apple patched it in both macOS 12.7.5 and 13.6.7!
Though Apple didn’t reference it in either security notes, glad to see n-1 and n-2 still getting some love. Do wonder why it was only referenced in 14.5’s notes 🤔
4
6
57
Day away from
@bsides_calgary
2023! Excited to talk about our old trusty Macs and OpenCore Legacy Patcher ;p
4
4
56
Another blog post a bit sooner than expected! Though unfortunately this one’s not as successful as usual.
But at least we got custom serial numbers working ;p
4
5
51
Regarding support for other models such as Mac Pros (pre-2019), and non-Metal Macs (per-2012 systems), we’re hard at work getting support ready. We’d recommend staying on macOS Monterey until we’ve added support.
No estimate can be given at this time.
2
0
51
Was an amazing time, thank you MacDevOps for having me!
Posted my slides here:
Security day continued with Mykola talking Electron security. And about his newly released open source Lectricus tool
0
3
12
2
10
51
And a huge thank you to all our other devs and testers. Thank you DhiankG,
@flagers2
,
@Alex_iPhone5s
, Ausdauersportler,
@crystall1nedev
,
@Jazzzny225
,
@Maxdec94
,
@UHDbits
and everyone else who’s helped along the way! We wouldn’t have gotten this far without them!
3
1
50
With regards to
@dhinakg
’s tweet earlier today, we’re currently dealing with impersonation with OpenCore Legacy Patcher.
We ask everyone if you can, please report this malicious site so that it cannot hurt other users stumbling upon it:
2
7
49
Currently we’re targeting support for 2012 and newer Macs with Ivy Bridge+ CPUs. Older machines may work, however features such as GPU Acceleration, Wifi and USB may break. 2013 Mac Pro is unsupported due to aforementioned boot issues, otherwise all other machines should work!
7
1
46
Do note that this is still an early build, and will be available publicly for everyone when OCLP 0.5.4 officially releases later this month.
As always, stay on Monterey for the best support while patches get ironed out.
Otherwise hope everyone enjoys the new patches!
1
1
47
Whoever manages KDKs at Apple, hope you’re doing alright. Today’s KDK is labeled as the usual DMG but is actually PKG @-@
Simple rename works for anyone having issues
2
4
47
Proud to announce that I'll be speaking at the cyber security conference,
@bsides_calgary
, this November! Will be looking into how security has evolved over the years on macOS!
This will be my first time presenting at a conference, so go easy on me ;p
3
2
41
@ClassicII_MrMac
I remember wanting a cheese grater for so long.
Got lucky with a dead G5 unit when I was 17, converted her to a Hackintosh. Still running to this day, as my local server with Proxmox! Gotta keep those macOS installers somewhere
(And yes, I did convert the FireWire to USB-C ;p)
1
1
41
I generally don’t like asking for donations, but we’d greatly appreciate if anyone would be willing to donate a 2013 Trash Can Mac Pro for OpenCore Legacy Patcher.
Been trying for some time to get Ventura running on them, however we’ve been unable to make any progress remotely…
5
17
42
Really proud to say I’ve been asked to speak at MDOYVR! Excited to talk macOS/Electron security, as well as meet many of the amazing devs and Mac Admins making the community what it is!
📷 Announcing Mykola Grymalyuk who will speak at MacDevOpsYVR 2024 about "Electron Security" He asks an important question: "Does keeping Electron apps on your Mac make it insecure?" Join us June 20-21, 2024
0
2
11
2
2
42
And yes, that is a SATA to 6pin, then 6pin to 8pin adapter to get this little guy running.
Really should invest in a fire extinguisher one of these days 🧯
2
2
39
New blog post!
Wanted to share my thoughts on Apple’s Rapid Security Response system, and why we’re unlikely to see it used in the future:
3
1
37
So cursed fact of the day: When
@MacStadium
provided us a 2018 Mac mini running Mojave for OCLP’s Build Server, apparently the system’s root volume was HFS+
For reference, High Sierra made APFS default on SSDs and Mojave required all boot drives to be APFS.
This’ll be fun lol
2
0
35
Finished up my talk at
@bsides_calgary
2023, had an amazing time! I posted my slides to my blog, a video recording should hopefully be coming from BSides in a month or so.
3
3
35
Here with a fun one, CVE-2023-44077: ShareBrowser Privilege Escalation 🎉
2
8
33
This release wouldn't be possible with the amazing talents of
@ASentientBot
and EduCovas. Without the DSCE project and endless hours working on these projects, we would have no legacy Metal graphics acceleration today.
2
0
34
Hey I know that spot!
I'm starting to get pretty excited for
#WWDC23
😀
What hardware or OS announcement are you looking forward to the most?
13
7
197
1
0
33
Unfortunate part is that I still need a machine for class, and apparently the only semi-recent laptop I have is a base model 2016 13” MacBook Pro running Ventura (with OCLP ofc ;p)
Gonna be an interesting week on this poor little machine. Trial by fire for our patches 🔥
3
1
32
After my trip at the Developer Centre, got to visit Apple’s Infinite Loop Campus!
3
0
32
Well if the twitter ship is truly sinking, you can find me on Mastodon:
Really enjoyed my time on twitter otherwise, met so many great developers, engineers and other amazing people through this site. Hope this ship can still be saved 🤞
2
1
30
Another year, and another round of WWDC hardware bingo!
Wrote about my predictions for which machines are likely to get the cut for macOS 14.
#WWDC23
7
8
28
This is a great take away from this whole situation. I look at the time my colleagues and I have poured into OpenCore Legacy Patcher, and we very well know that it’ll all end someday.
I wish the best for
@ChristianSelig
, and hope Apollo’s been able to open up some doors for him!
@alexmarktl
@ChristianSelig
At the same time, there is incredible opportunity to build on a powerful API and do things you wouldn't have been able to otherwise. Unless you pivot and build up the underlying service after some time - but that is often an entirely different scope.
I think the lesson is more
3
1
166
2
0
26
First day of
@bsides_calgary
Cyber Security Conference, absolutely loved the cassette name tag (B side ;p)
Sadly nothing about macOS, though got the chance to talk about OCLP to one of the presenters (using the good ol MacBookPro11,4)
1
4
27
Bit late, but BSides Calgary finally uploaded recordings of everyone's talk! Unfortunately first 10min has no audio, and the rest is a bit broken but happy there's a recording.
“Legacy Macs, Modern Solutions. A Hacker's Approach to Mac Sustainability.”
2
5
27
But now that I’m home, the other developers and I have been cranking away at getting your old Macs running Ventura!
Hopefully by the fall, we can get something the community can use!
3
0
26
Something I hadn’t noticed up till now, Apple’s now shipping a Cryptex in the Safari 17 beta.
Interesting part is the amount of logic going into poststall scripts including usage of cryptegraft.
Additionally, a new internal VM model, VirtualMac2,3 (vmac300ap), was referenced.
2
2
25
My MacDevOpsYVR 2024 talk is up! “Electron Security: Making your Mac a worse place?”
Thank you again to
@macvfx
and all the other amazing organizers for putting on such a great conference!
2
4
24
Another blog post! This time CVE-2024-4395, local privilege escalation in Jamf Compliance Editor.
And huge shoutout to
@JamfSoftware
’s security team, one of the smoothest reports I’ve done thus far.
0
4
23
Second day in California for
#WWDC2022
! Did a check-in, the Developer Centre is super cool!
All the rooms are named after different macOS releases, I believe the oldest I saw was Puma, and no macOS 13 rooms (yet) ;p
2
1
24
Heading out of Edmonton Airport currently, just a few more days till
#WWDC22
!
Even grabbed my old MacBookPro9,2 for some work on OCLP with macOS 13 ;p
6
0
23
While there’s some more quirks I need to investigate, first impression feels like a pretty good implementation that ensures everyone, including tinkerers, developers and OpenCore Legacy Patcher users, can get critical security as soon as possible.
1
0
23
Reference to the previous post, here’s the tower of minis!
- Macmini4,1 (Penryn 2.4Ghz, 320M)
- Macmini5,1 (Sandy 2.3Ghz, HD 3000)
- Macmini6,1 (Ivy 2.5Ghz, HD 4000)
- Macmini7,1 (Haswell 2.6Ghz, Iris 5100)
- Macmini8,1 (Coffee 3.0Ghz, UHD 630)
0
1
22
If you have a Trash Can you’d like to send, send me a DM. We’d greatly appreciate it!
Some more information on the situation with the Trash Can Mac Pro (MacPro6,1) and macOS Ventura:
0
2
23
Seems I’ve been proven wrong, Apple has deployed an RSR to the release channel. Still doesn’t change the fact kernel side can’t be updated, but good to see Apple’s pushing security updates at a faster pace.
Looking inside the Cryptexes, I did notice April 19 for last modified 🤔
🚨🔐Apple has released the first Rapid Security Response update for macOS Ventura devices.
macOS Security Response 13.3.1 (a)
The update size is 309.8MB💾
More info as it becomes available..💡
13
16
83
1
2
23
@austinnotduncan
Hi, loved seeing OpenCore Legacy Patcher in your latest video but seems you grabbed the wrong URL for our guide lol
Not sure who paulocmarques is, but our documentation is officially hosted at :
1
0
19
For those wanting more info from my last tweet with pre-AVX2.0 installs, source is now up on Github! Merged the manual APFS patches into the kext, added some more debug options, and wrote some more info in the README.
2
4
21
Schedule’s finally up, and seems I’ll be one of the first sessions! Super excited to speak next month 🎉
Looking forward to a awesome lineup of speakers at BSides Calgary 2023! Everyone from first-time to veteran speakers have something to teach us at the November 16-17 event. A tentative schedule is listed on the registration site() and will be updated as
0
2
3
1
1
21
Fun fact: Apple currently has a 2013 Trash Can Mac Pro on their refurbished site in the UK. Anyone want to bite the bullet on one of the last Trash Cans straight from Apple? Low price of $6.3K USD lol
Good eye from
@Jazzzny225
on finding this little guy
4
2
21
Another day, another broken KDK!
Poor engineer uploaded today’s KDK (22F5037d) as a disk image, same happened on 13.3 Beta 3:
As before, simple rename to .pkg resolves this
Whoever manages KDKs at Apple, hope you’re doing alright. Today’s KDK is labeled as the usual DMG but is actually PKG @-@
Simple rename works for anyone having issues
2
4
47
0
0
20
macOS Ventura dropped! Sadly pre-Kaby Lake hardware was removed, but we’ll see how far we can get on my old 2012 MacBook Pro!
And sitting next to me is
@ClassicII_MrMac
cranking those blog posts out!
1
2
21
Almost been 10 months since I bought my 14” MacBook Pro, amazing machine but battery life seemed to have tanked semi recently (3-4h?)
System Report shows 144 cycles with 90% health(?!?) I’ve never had a machine burn through its battery so quickly, old 13” was 77 cycles yr+. 1/7
1
0
20
For those wondering why the new Mac Studio model is so strange (Mac13,x), the reasons are:
- 13: H13 / Internal SOC naming
- Drop Type info from Model ID
Future Macs won't be using the standard MacminiX,Y connotation, instead developers are expected to the MobileGestalt
2
4
21
Looks like the Battery Saga finally ends for my 14” MacBook Pro!
Early morning class yesterday, the right shift key died on my machine. Brought it to the Apple Store and they took it in immediately. They even had a top case in stock! 3-5 business days for repairs
2
1
20
Sadly a lot of the booths were managed by sales teams, couldn’t talk to many engineers. Was told to bug Silicon Valley a few times for jobs and internships lol
Lines up with how I know no one in lower level macOS research/development in Alberta. Thankfully I’m still a student
0
0
20
Less than a week after demonstrating Nvidia Web Driver acceleration for
#Monterey
, Nvidia seems to have revoked their Web Driver certificates.
Because of this, High Sierra users now have zero official resources for installing Web Drivers through proper channels.
2
0
20
@theevilbit
I went insane with this issue, and realized most people using OCLP had the same happen (since we use it for patching). KDK nuking only happens during OS updates.
We had to implement a “backup” system, where we restore the KDK if required:
2
1
18
To add to this atrocity, I got a GT710 running with the same Web Drivers! After I certain point, I wonder when this becomes a crime
1
0
17
Sample of what happens on vulnerable OSes:
(Blog post coming soon, I promise)
0
1
16