Readers of this blog probably know that I like to try NTLM relaying over all protocols possible! Relaying to Microsoft SQL (MSSQL) is known to work when using the default weak configuration.
With this blog post, we show some dangerous configurations and release a small tool to automate NTLM relaying in these cases.
Internet of Things (IoT) and Operational Technology (OT) is an area that has grown strongly in recent years and is increasingly being used in the business world. To be able to test the security in this area, let’s take a closer look at the Message Queuing Telemetry Transport (MQTT) protocol to understand the strengths and weaknesses of the protocol.
When accessing a remote server, one should always assume it has been compromised or might be in the near future. It is particularly crucial for users with administrative privileges to establish a secure connection to the Remote Desktop Protocol (RDP) service in order to not fall victim to credential theft or impersonation. To achieve this, there exist several measures in Windows. In this blog post, we’ll look at some of them, their benefits and their drawbacks.
Nowadays more and more security tools are used to monitor and generate alerts from different sources (EDR, Proxy, etc.).These alerts often contains URL, domain names, or file hashes that can and should be compared with a threat intelligence source to immediately identify current threats and avoid when possible false positives. In this article, we will […]
In June last year, the good folks at SpecterOps dropped awesome research on Active Directory Certificate Services (AD CS) misconfigurations. Since then, we find and report these critical vulnerabilities at our customers regularly. One of these new attack path is relaying NTLM authentication to unprotected HTTP endpoints. This allows an attacker to get a valid […]
More and more companies use Microsoft 365, well even we at Compass-Security use it internally. Moving to the cloud solves many issues that our DFIR team had to deal with in the past years. Managed infrastructure means no ProxyShell, Hafnium, etc. We’re grateful for that.
Email authentication and security is another complex topic that was often misconfigured in the past. We often could send phishing email in the name of our clients during assessments. Office 365 makes the life of scammers and phishers somehow harder. We’re also grateful for that.
However we still encounter some O365 environments where it’s possible to send spoofed emails. Why is that, you ask? We also wondered and dug into the O365 features and settings!
The ntds.dit file from a domain controller contains all password hashes of the domain. In a company with employees around the globe we were allowed to analyze the hashes. Here are the results, and the reason why you should implement a banned password list.
Passwordless products promise greater security and convenience by allowing users to log in to Windows systems with only their smartphone. But what is going on behind the scenes and how could a domain’s security stance be worsened by such a solution? In this post I will explain how these products are implemented and detail the vulnerabilities and weaknesses discovered in three tested products.
BloodHound is the way to go to for finding attack paths in an Active Directory (AD) environment. However, it is not always clear how the data is gathered without looking at the code of SharpHound, the data ingestor for BloodHound. Microsoft hardened their systems over time through updates, which makes enumeration of Active Directory (AD) […]
BloodHound is the way to go to for finding attack paths in an Active Directory (AD) environment. However, it is not always clear how the data is gathered without looking at the code of SharpHound, the data ingestor for BloodHound. Microsoft hardened their systems over time through updates, which makes enumeration of Active Directory (AD) […]
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