Bypass NTLM Message Integrity Check – Drop the MIC
In An SMB Relay Race – How To Exploit LLMNR and SMB Message Signing for Fun and Profit, Jordan Drysdale shared the dangers of lack of SMB Signing requirements and […]
Red Team
Testing TLS and CertificatesÂ
Pentest reports sometimes include bad information under a heading like, “Weak TLS Configuration” or “Insecure SSL Certificates.” This article will explain how TLS is supposed to work, common ways it […]
Hunting for SSRF Bugs in PDF GeneratorsÂ
If you’ve been on a website and noticed one of the following features, there’s a good chance you’ve stumbled upon a hot spot for server-side request forgery (SSRF) bugs: Before […]
Spamming Microsoft 365 Like It’s 1995Â
I previously blogged about spoofing Microsoft 365 using the direct send feature enabled by default when creating a business 365 Exchange Online instance (https://www.blackhillsinfosec.com/spoofing-microsoft-365-like-its-1995/). Using the direct send feature, it […]
Abusing Active Directory Certificate Services (Part 3)
| Alyssa Snow In PART ONE and PART TWO of this blog series, we discussed common misconfigurations of Active Directory certificate templates. In this post, we will walk through exploitation […]
Introducing GraphRunner: A Post-Exploitation Toolset for Microsoft 365
By Beau Bullock & Steve Borosh TL;DR We built a post-compromise toolset called GraphRunner for interacting with the Microsoft Graph API. It provides various tools for performing reconnaissance, persistence, and […]
Abusing Active Directory Certificate Services (Part 2)
Misconfigurations in Active Directory Certificate Services (ADCS) can introduce critical vulnerabilities into an Enterprise Active Directory environment, such as paths of escalation from low privileged accounts to domain administrator.
Abusing Active Directory Certificate Services (Part 1)
Active Directory Certificate Services (ADCS) is used for public key infrastructure in an Active Directory environment. ADCS is widely used in enterprise Active Directory environments for managing certificates for systems, users, applications, and more.
Stop Phishing Yourself: How Auto-Forwarding and Exchange Contacts Can Stab You in the Back
Hayden Covington // Phishing is an ever-present threat, but lately, user education and spam filters have helped mitigate some of that threat. But what happens when a phish makes it […]