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RedTeam Pentesting

@redteam-pentesting.de
84 followers 49 following 32 posts

Account for RedTeam Pentesting GmbH Imprint: redteam-pentesting.de/imprint

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RedTeam Pentesting @redteam-pentesting.de · 21/09/2026
🚨 Rocket Remote Desktop encrypts users' saved credentials with their Windows SIDs. Every user with access to a Windows client on which the client software is installed has access to the database, where these credentials are saved. No fix available yet. www.redteam-pentesting.de/en/advisorie...
redteam-pentesting.de
RedTeam Pentesting - Insecure Storage and Weak Encryption of Credentials in Rocket Remote Desktop
Attackers with access to a computer with Rocket Remote Desktop can read the credentials of the global database. With these credentials, they can view and decrypt the saved credentials of all users who...
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RedTeam Pentesting @redteam-pentesting.de · 30/01/2026
🚀Our tool keycred for KeyCredentialLinks and Shadow Credential attacks now works with updated domain controllers again! It turns out, Microsoft violated their own specs. Try it out: github.com/RedTeamPente...
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RedTeam Pentesting @redteam-pentesting.de · 04/12/2025
🚨Nextcloud was vulnerable to XSS in PDF.js (CVE-2024-4367) found by Thomas Rinsma at CodeanIO. Although Nextcloud mitigated the vulnerability in their portal by disabling eval, the viewer.html component of the vulnerable PDF.js was still exposed. www.redteam-pentesting.de/en/advisorie...
redteam-pentesting.de
RedTeam Pentesting - Cross-Site Scripting in Nextcloud: Development files shipped in files_pdfviewer app
Nextcloud’s PDF viewer uses an outdated version of PDF.js vulnerable to CVE-2024-4367. Attackers with regular user access to a Nextcloud instance are able to prepare a special link. If this link is vi...
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Reposted by RedTeam Pentesting
Pwn-la-Chapelle @pwn-la-chapelle.eu · 30/11/2025
Haix-la-Chapelle 2025 is over! 128 teams submitted at least one flag, 270 correct flags were submitted, and 589 drinks consumed. The winners are: 🥇 Team tjcsc with 3165 points 🥈Team THEM?! with 2665 points 🥉Team IT-Security Club with 2087 points Thanks to all participants, see you next year!
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Pwn-la-Chapelle @pwn-la-chapelle.eu · 28/11/2025
By popular demand, registrations for Haix-la-Chapelle are now open! Register your account here: haix-la-chapelle.eu/register If you experience any issues, open a support ticket on our discord: discord.gg/ASYqv7N2Rj
haix-la-chapelle.eu
Haix-la-Chapelle 2025
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Pwn-la-Chapelle @pwn-la-chapelle.eu · 26/11/2025
It's hard hosting a new CTF #haix25
Panic Calm meme

First row:
New unknown haix la chapelle ctf, *panic picture*
Second row:
they have glühwein and flags, *kalm picture*
last row:
red flags, *panic picture*
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Reposted by RedTeam Pentesting
Pwn-la-Chapelle @pwn-la-chapelle.eu · 19/11/2025
Just 10 days left until our first CTF, Haix-la-Chapelle, starts! We have been hard at work and are excited to have you play our challenges 👀 CTF starts at 10am CET on 29th November with prizes sponsored by our lovely sponsors @redteam-pentesting.de and @binary.ninja
ctftime.org
Haix-la-Chapelle 2025
Haix‑la‑Chapelle 2025 is a online Jeopardy-style CTF organized for the first time by Pwn‑la‑Chapelle and friends! It...
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RedTeam Pentesting @redteam-pentesting.de · 19/11/2025
🔥Only 10 days left until the Haix-la-Chapelle 2025 CTF is starting on November 29! We're sponsoring the prize money for the best writeups and are excited to see your creative solutions. haix-la-chapelle.eu
haix-la-chapelle.eu
Haix-la-Chapelle 2025
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RedTeam Pentesting @redteam-pentesting.de · 13/11/2025
🚨8 months after public disclosure, RHEL @almalinux.org @rockylinux.org are still vulnerable for a Ghostscript RCE with a reliable public exploit (CVE-2025-27835 and others)! It can be triggered by opening LibreOffice docs or through a server that uses ImageMagick for file conversion!
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Taggart @taggart-tech.com · 20/10/2025
So CVE-2025-33073 (Reflective Kerberos Relay) has been added to CISA KEV. In the original writeup, SMB Signing (server-side) is listed as a mitigation for this vulnerability. HOWEVER... blog.redteam-pentesting.de/2025/reflect...
blog.redteam-pentesting.de
A Look in the Mirror - The Reflective Kerberos Relay Attack
It is a sad truth in IT security that some vulnerabilities never quite want to die and time and time again, vulnerabilities that have long been fixed get revived and come right back at you. While rese...
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Reposted by RedTeam Pentesting
Pwn-la-Chapelle @pwn-la-chapelle.eu · 08/10/2025
We are happy to announce that we will be hosting our first ever CTF, Haix-la-Chapelle 2025, on the 29th of November! It will be a Jeopardy style CTF and will start at 10 am Berlin time, lasting for 24 hours. You can find the CTFTime event at ctftime.org/event/2951 See you there!
haix-la-chapelle.eu
Haix-la-Chapelle 2025
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RedTeam Pentesting @redteam-pentesting.de · 19/08/2025
👀 Turns out MS-EVEN can do a lot more than NULL auth: In addition to leaking environment variables, it is possible to coerce authentication from arbitrary logged on users* 🤯 *If you are willing to trigger Windows Defender.
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RedTeam Pentesting @redteam-pentesting.de · 17/06/2025
We're excited to host our XSS workshop for RWTH Aachen University's SecLab, again. Today, the students will face XSS challenges as well as a hunt for IT security easter eggs to climb the leaderboard 🏆 #rwth #informatik #aachen
Screenshot of the XSS Lab web application showing the leaderboard.
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RedTeam Pentesting @redteam-pentesting.de · 11/06/2025
Based on our testing, MS seems to have fixed CVE-2025-33073 by blocking the CredUnmarshalTargetInfo/CREDENTIAL_TARGET_INFORMATIONW trick! @tiraniddo.dev @decoder-it.bsky.social @synacktiv.com #infosecsky #infosec #pentests #redteam #cybersky #cybersecurity bsky.app/profile/redt...
x.com
RedTeam Pentesting on X: "🚨 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: https://t.co/ab21IXtp9T" / X
🚨 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: https://t.co/ab21IXtp9T
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RedTeam Pentesting @redteam-pentesting.de · 11/06/2025
🚨 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...
blog.redteam-pentesting.de
A Look in the Mirror - The Reflective Kerberos Relay Attack
It is a sad truth in IT security that some vulnerabilities never quite want to die and time and time again, vulnerabilities that have long been fixed get revived and come right back at you. While rese...
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RedTeam Pentesting @redteam-pentesting.de · 10/06/2025
🚨🚨🚨 Just a heads-up: Microsoft will release a fix for a vulnerability we discovered as part of Patch Tuesday, today. MS classified CVE-2025-33073 as "important" and we recommend patching soon. Stay tuned for our blog post and paper about it tomorrow at 10:00 am CEST 🔥
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RedTeam Pentesting @redteam-pentesting.de · 05/06/2025
Newer Windows clients often enforce signing ✍️ when using SMB fileshares. To quickly deploy an SMB server with signing supported we implemented this in impacket's smbserver.​py based on a prior work by @lowercasedrm.bsky.social . github.com/fortra/impac...
github.com
smbserver.py: add signing support by using computer account with NetLogon by rtpt-romankarwacik · Pull Request #1975 · fortra/impacket
This pull requests adds the option to support signing for arbitrary clients in a domain. Most of the NetLogon code is based on this gist by @ThePirateWhoSmellsOfSunflowers. To use this functionalit...
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RedTeam Pentesting @redteam-pentesting.de · 04/06/2025
🎉 It is finally time for a new blog post! Join us on our deep dive into Windows Authentication Coercion and its current state in 2025, including some brand-new tooling ✨ #infosecsky #infosec #pentests #redteam #cybersky #cybersecurity blog.redteam-pentesting.de/2025/windows...
blog.redteam-pentesting.de
The Ultimate Guide to Windows Coercion Techniques in 2025
Windows authentication coercion often feels like a magic bullet against the average Active Directory. With any old low-privileged account, it usually allows us to gain full administrative access to al...
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