Mänu

Nice, there is a new SSH client option -Z in OpenSSH 10.5 that prints the keys that will be tried for public key authentication in the order that they will be used. Manpage: man.openbsd.org/ssh.1#Z So you can see which public keys are disclosed to the remote system. #ssh #openssh

Pentesting passkeys? Security analyst @emanuelduss.ch shows two JS snippets for tampering with the WebAuthn APIs. Handy for checking if you can login using a security key without knowing the PIN. Check out the technical details and how he got there: blog.compass-security.com/2026/08/a-no...

Pipeleek 1.0 is out 💧 Secret scanning across 7 CI/CD platforms, plus runner and Renovate bot exploitation. Want to see one leaked job log turn into repo takeover? Try our deliberately vulnerable GitLab Attack Lab. Happy leeking! blog.compass-security.com/2026/08/pipe... #DevSecOps #CICD

#RBCD attacks in Impacket have been extended across an arbitrary number of domains! 🚀 Discover how to impersonate arbitrary identities through complex #ActiveDirectory forest trusts, including SPN-less exploitation. 📚 www.synacktiv.com/en/publicati... 🔨 github.com/synacktiv/im...

Frisch von der Presse: Du protestiert gegen neue Rechenzentren für Big Tech oder bist für Palästina? Dann solltest du die nächsten Abschnitte lesen. Es könnte ein Revival des Fichenstaats geben. Wo genau solche Aktivitäten in Datenbanken des Geheimdiensts landen www.republik.ch/2026/06/02/c...

On sshlabs.compass-security.training you can find a presentation and a Docker-based hands-on lab in which you can learn how SSH works, how it can be attacked and how to protect it. #security #infosec #network #ssh #openssh #pentest

SSH everywhere, misconfigurations somewhere. Our new SSH Labs let you get your hands dirty: slides, video, and a Docker-based lab. Created by our Security Analyst @emanuelduss.ch, learn how SSH breaks and how to fix it: blog.compass-security.com/2026/05/ssh-... #SSH #InfoSec #Security

Collision! Although successful on stage, Emanuele Barbeno, Cyrill Bannwart, Yves Bieri, Lukasz D., Urs Mueller (@compasssecurity) of Compass Security targeted Anthropic Claude Code, hitting a one-vulnerability collision with a previous attempt and earning $20,000 & 2 Master of Pwn points. #Pwn2Own

Fast Android File Access via SSHFS over Wi-Fi or USB (MTP Alternative): emanuelduss.ch/posts/fast-a... #android #mtp #sshfs

Simple shell function that calls the ip.thc.org service to get subdomains or CNAMEs pointing to a subdomain, or IP addresses pointing to a subdomain: gist.github.com/emanuelduss/... For quick and dirty subdomain enumeration 😀 THX @hackerschoice.bsky.social for this nice service 🤘 #pentest #dns

WinGet can be more than a package manager. We show how .𝚠𝚒𝚗𝚐𝚎𝚝 configs + a self-referencing LNK become a viable initial access payload when Microsoft Store is enabled. Includes detection queries & mitigation tips. blog.compass-security.com/2026/03/wing... #RedTeam #Windows #LOLBins #InitialAccess

John Ostrowski (Compass Security) and Manuel Kiesel (Cyllective AG) worked together on CVE-2025-13154, a Lenovo Vantage LPE. Even after Microsoft closed a known primitive, collaboration led to a working PoC. blog.compass-security.com/2026/02/from... #Windows #CVE #SecurityResearch #PrivEsc

This was a really cool and awesome course ❤️! I learned so much in these two days and did a lot of stuff I never did and never heard about before. It was cool when (after some nasty debugging 🫠) the encryption key could finally be sniffed 🤘. Thanks a lot for your training, you guys rock!

🚨 New blog post! Read about CVE-2025-13154, a privilege-escalation vulnerability in a Lenovo Vantage add-in called SmartPerformance. cyllective.com/blog/posts/l... #windows #cve #infosec #pentest

This is probably the easiest way to perform reverse DNS lookups over IP address ranges using the built-in tool getent and bash brace expansion: getent hosts 130.59.{20,31}.{0..255} Useful if you are on a system/container with limited tools. #pentest #dns #linux

THC Release 💥: The world’s largest IP<>Domain database: ip.thc.org All forward and reverse IPs, all CNAMES and all subdomains of every domain. For free. Updated monthly. Try: curl ip.thc.org/1.1.1.1 Raw data (187GB): ip.thc.org/docs/bulk-da... (The fine work of messede 👌)

Two blog posts just dropped - one with the details on the bloatware pwning shenanigans I was up to earlier in the year, and another on pipetap, a new Windows named pipe proxy/tool. sensepost.com/blog/2025/pw... sensepost.com/blog/2025/pi...

New video out! Security analyst John Ostrowski show the hands-on process behind discovering CVE-2025-24076 and CVE-2025-24994 described in our recent blog post. Watch here: youtu.be/YwNcTuHxnAI #security #pentest #windowsinternals #vulnresearch

NTLM relays failing because of EPA? 😒 Nick Powers & @tw1sm.bsky.social break down how to enumerate EPA settings across more protocols + drop new tooling (RelayInformer) to make relays predictable. Check out their blog for more: ghst.ly/4rqwpRs

Want to understand how Windows handles authentication and access tokens? Security analyst @emanuelduss.ch explains how they’re created, used, and abused - with live demos. 🎥Presentation: youtu.be/_ODdwpxXRR4?... #Security #Pentest #WindowsInternals

802.11evil now shows a Wi-Fi QR code, sends router advertisements for IPv6 support, can set static routes via DHCP and disable Wi-Fi to only act as a router. See changelog: emanuelduss.ch/posts/create... #pentest #network #tls #mitm

Credential Guard was supposed to end credential dumping. It didn't. Valdemar Carøe just dropped a new blog post detailing techniques for extracting credentials on fully patched Windows 11 & Server 2025 with modern protections enabled. Read for more: ghst.ly/4qtl2rm

📢 Confirmed! Emanuele Barbeno, Cyrill Bannwart, Yves Bieri, Lukasz D., Urs Mueller of Compass Security combined an arbitrary file write & cleartext transmission of sensitive data to exploit the @home_assistant Green. Their third round win earns them $20,000 and 4 Master of Pwn points. #Pwn2Own

#Pentest of gRPC-Web apps is tricky due to the binary format. We are releasing bRPC-Web, a @portswigger.net @burpsuite.bsky.social extension developed by our @muukong.bsky.social that helps manipulate #gRPC-Web traffic, even in absence of #protobuf schemas. blog.compass-security.com/2025/10/brpc...

Learn about a FortiProxy Domain Fronting Protection bypass discovered by our analyst @emanuelduss.ch. Details in the advisory: www.compass-security.com/en/news/deta... Curious how web filters are evaded? Read his blog series: blog.compass-security.com/2025/03/bypa... #cve #pentest #bypass

Talks from the Balkan Computer Congress 2025 security conference, which took place last September, are available on YouTube www.youtube.com/playlist?lis...

I’m excited to announce that I’ll be presenting The Fragile Lock: Novel Bypasses for SAML Authentication at Black Hat Europe! In this talk, I’ll show how I was able to continuously bypass security patches to achieve complete auth bypass for major libraries. #BHEU @blackhatevents.bsky.social

The final episode of our Kerberos deep dive is live! RBCD opens new attack paths in Kerberos. Learn how misconfigs enable privilege escalation and how to defend. youtu.be/l97RDnzdrXY?... #Kerberos #ActiveDirectory

I've been researching the Microsoft cloud for almost 7 years now. A few months ago that research resulted in the most impactful vulnerability I will probably ever find: a token validation flaw allowing me to get Global Admin in any Entra ID tenant. Blog: dirkjanm.io/obtaining-gl...

Episode 5 of our Kerberos deep dive is live. Constrained delegation isn’t bulletproof. See how attackers exploit it, and how to defend with monitoring & best practices. youtu.be/rnhr02eKU0I?... #Kerberos #ActiveDirectory

I've been hacking on a new Windows Named Pipe tool called PipeTap which helps analyse named pipe communications. Born out of necessity while doing some vulnerability research on a target, its been super useful in reversing it's fairly complex protocol. :)

Episode 3 of our Kerberos deep dive is live. AS-REP Roasting abuses accounts without pre-auth. Learn the risks, how attackers exploit it, and how to defend. youtu.be/56BjmyOTN5o?... #Kerberos #ActiveDirectory

We use @jameskettle.com Burp extension Collaborator Everywhere daily. Now our upgrades are in v2: customizable payloads, storage, visibility. Perfect for OOB bugs like SSRF. Find out more here: blog.compass-security.com/2025/09/coll... #AppSec #BurpSuite #Pentesting

Episode 2 of our Kerberos deep dive is live. Kerberoasting lets attackers steal AD service account credentials. See how it works and how to protect your systems: youtu.be/PhNspeJ0r-4?... #Kerberos #ActiveDirectory

New blog post about fast and easy file sharing via IPv6 link-local addresses over a network cable and how it can be used to bypass & abuse some always-on corporate VPNs: emanuelduss.ch/posts/fast-a... #ipv6

Kerberos powers auth in Windows and hides big security risks. We’re launching a 6-part deep dive: from protocol basics to attacks plus how to stop them. Starts today → blog.compass-security.com/2025/09/tami... → Subscribe to our channel! #Kerberos #ActiveDirectory

Passwords are dead, long live passkeys! 🔑 In our latest blog, we go hands-on: real-life setups, plus tips for recovery and avoiding pitfalls. blog.compass-security.com/2025/08/into... #Passkeys #CyberSecurity #Authentication

The DSInternals PowerShell module just got an upgrade! 🔥 Updates include: ✅ Golden dMSA Attack ✅ Full LAPS support ✅ Trust password & BitLocker recovery key extraction ✅ Read-only domain controller database compatibility Read more from Michael Grafnetter: ghst.ly/412rZ7F

Zscaler SAML SP Authentication Bypass via Certificate Cloning & Signature Spoofing (CVE-2025-54982) by @amberwolfsec.bsky.social: blog.amberwolf.com/blog/2025/au... #saml #zscaler

China has started filtering and censoring internet traffic taking place over the QUIC protocol. The filtering started in April last year. The Great Firewall now decrypts QUIC packets at scale and uses a separate blocklist for QUIC traffic, separate from its main filters gfw.report/publications...

Reverse engineering Microsoft’s SQLCMD.exe to implement Channel Binding support for MSSQL into Impacket’s mssqlclient.py. Storytime from Aurelien (@Defte_ on the bird site), including instructions for reproducing the test environment yourself. sensepost.com/blog/2025/a-...

BloodHound v8.0 is here! 🎉 This update introduces BloodHound OpenGraph, revolutionizing Identity Attack Path Management by exposing attack paths throughout your entire tech stack, not just AD/Entra ID. Read more from Justin Kohler: ghst.ly/bloodhoundv8 🧵: 1/7

Not at Black Hat / DEF CON? You can still join the mission to kill HTTP/1.1: - Watch the livestream from #DEFCON at 16:30 PT on the 8th - Read the whitepaper on our website - Grab the HTTP Request Smuggler update & WebSecAcademy lab Follow for updates & links. It's nearly time!

Entra Connect sync accounts can be exploited to hijack device userCertificate properties, enabling device impersonation and conditional access bypass. @hotnops.bsky.social explores cross-domain compromise tradecraft within the same tenant. Read more: ghst.ly/3ISMGN9

It's been almost a year since my last blog... So, here is a new one: Extending AD CS attack surface to the cloud with Intune certificates. Also includes ESC1 over Intune (in some cases). dirkjanm.io/extending-ad... Oh, and a new tool for SCEP: github.com/dirkjanm/sce...

We've just released a massive update to Collaborator Everywhere! This is a complete rewrite by @compass-security.com which adds loads of features including in-tool payload customization. Massive thanks to Compass for this epic project takeover. Check out the new features:

Teammate Leonid discovered a leaked credential that allowed anyone unauthorized access to all Microsoft tenants of orgs that use Synology's "Active Backup for Microsoft 365" (ABM), including sensitive data like Teams channel messages. 🤓 #synology #disclosure #modzero modzero.com/en/blog/when...

Introducing the BloodHound Query Library! 📚 @martinsohn.dk & @joeydreijer.bsky.social explore the new collection of Cypher queries designed to help BloodHound users to unlock the full potential of the BloodHound platform by creating an open query ecosystem. ghst.ly/4jTgRQQ

👀 We have also released a paper which really goes into the nitty-gritty for those who are interested 🕵️‍♀️: www.redteam-pentesting.de/publications... For those that only need a short overview, here's our advisory 🚨: www.redteam-pentesting.de/advisories/r...

🚨 Our new blog post about Windows CVE-2025-33073 which we discovered is live: 🪞The Reflective Kerberos Relay Attack - Remote privilege escalation from low-priv user to SYSTEM with RCE by applying a long forgotten NTLM relay technique to Kerberos: blog.redteam-pentesting.de/2025/reflect...