Antonio Cocomazzi

offensive security - windows internals | BlueSky: | Mastodon:

[Antonio Cocomazzi @splinter_code]

The slides of our joint research talk “10 Years of Windows Privilege Escalation with Potatoes” at #POC2023 are out!

👉 https://t.co/nowgGQHA73

cc @decoder_it

[diversenok @diversenok_zero]

> A new Project Zero blog post by James Forshaw
https://t.co/5cojrQBXQV

Me: Oh hey, I recognize this function! UIAccess + GetProcessHandleFromHwnd / NtUserGetWindowProcessHandle were the core of my CVE-2021-31951 EoP 😋

So some fixes leading to v3 actually date a bit earlier

[Insomni'hack @1ns0mn1h4ck]

@decoder_it breaks down reflection attacks and their impact on enterprise security in this new talk at #INSO26. Are you interested in how modern authentication flow works? So this talk is for you!
Save your spot: https://t.co/U52kaanmth
#Infosec #INSO26 #CyberConference

[Andrea P @decoder_it]

Just dropped a short post on why some classic NTLM relay tricks seems to be dead on Server 2025.
https://t.co/UcYRo5YaWq

[Andrea P @decoder_it]

Just published a summary of "modern" Windows authentication reflection attacks. Turns out reflection never really died. 😅https://t.co/2YxXlaRMMC

[Andrea P @decoder_it]

Blog post about my recent CVE-2025-58726, aka “The Ghost Reflection” is out, read it here:
https://t.co/KnuLXeNLUc
🙃

[Andrea P @decoder_it]

Remember the CredMarshalInfo trick? If you hadn’t applied the June 2025 patch, CVE-2025-33073 would have been critical. We know that in NTLM local auth, msg 3 is empty:You can drop sign/seal -> from Domain User to DomainAdmin escalation. 😅

[Andrea P @decoder_it]

my simple poc: https://t.co/yLOUy2GXov

[Andrea P @decoder_it]

Coercing machine authentication on Windows 11 /2025 using the MS-PRN/PrinterBug DCERPC edition, since named pipes are no longer used.
Kerberos fails in this case due to a bad SPN from the spooler, forcing NTLM fallback.

[diversenok @diversenok_zero]

Better socket handle visibility coming soon to @SystemInformer 🔥

When viewing a process handle table, SI will recognize files under \Device\Afd and retrieve information about their state, protocol, addresses, and more. Also works on Bluetooth and Hyper-V sockets 🤩

[Antonio Cocomazzi @splinter_code]

Apply here → https://t.co/0bH9DST7Nc

Happy to chat if you want to learn more.

[Antonio Cocomazzi @splinter_code]

I’m hiring Staff Windows Security Researchers to join my XAT (eXploits and Anti-Tampering) team at @SentinelOne! 🔥

👉 https://t.co/0bH9DST7Nc

More details 👇

[Antonio Cocomazzi @splinter_code]

The role is opened in multiple locations in Europe (we’re hiring across Italy, Spain, Poland, Czech Republic, Slovakia and France), with optional relocation support to Czechia if you'd prefer to move (must be eligible to work in the EU already at the time of applying).

[Andrea P @decoder_it]

In my long history of submissions, I think this is the first time one has been marked as critical😅

[Cyber Saiyan | RomHack Conference, Training, Camp @cybersaiyanIT]

Another Monday. Another week of… endless emails, annoying meetings, and oh look, a three-headed monkey behind you!

Now that we have your attention, we can unveil the agenda for #RomHack2025 https://t.co/P793dQAZdu

#infosec #securityconference

[Andrea P @decoder_it]

I just published a blog post where I try to explain and demystify Kerberos relay attacks. I hope it’s a good and comprehensive starting point for anyone looking to learn more about this topic. ➡��https://t.co/OztMeuoU5L

[Microsoft Threat Intelligence @MsftSecIntel]

Microsoft has discovered post-compromise exploitation of CVE 2025-29824, a zero-day elevation of privilege vulnerability in Windows Common Log File System (CLFS), against a small number of targets. https://t.co/XdpZSxY3ye

[Elad Shamir @elad_shamir]

NTLM relay is still a major threat and is now even easier to abuse. We just added new NTLM relay edges to BloodHound to help defenders fix and attackers think in graphs.

Read my detailed post - the most comprehensive guide on NTLM relay & the new edges:

https://t.co/6MnmlzVjNq

[Boris Larin @oct0xor]

We (me + @2igosha) have discovered a new Google Chrome 0-day that is being used in targeted attacks to deliver sophisticated spyware 🔥🔥🔥. It was just fixed as CVE-2025-2783 and we are revealing the first details about it and “Operation ForumTroll” https://t.co/apx0oXZ6be

[Raffaele Sabato @syrion89]

Check out our new blog post!