In this Black Hills Information Security (BHIS) webcast, we explore using GoLang to author malware with embedded shellcode. GoLang is a Google-authored modern successor language to C/C++. It is multi-platform, high performance, multi-threaded, and unlike C/C++ includes garbage collection! It has the advantage of compiling to native machine code, unlike .NET C# which is dependent […]
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Jordan and Kent have heard from a lot of people that the past Black Hills Information Security (BHIS) webcasts: “Group Policies That Kill Kill Chains” and “Active Directory Best Practices to Frustrate Attackers” have changed their business models for the better. And since they’ve been offered the BHIS soapbox again, they thought it was time […]
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Why is blockchain security important? Blockchain usage has exploded since the Bitcoin whitepaper was first published in 2008. Many applications rely on this technology for increased trust and privacy, where they would otherwise be absent from a centralized system. The ecosystem surrounding blockchain technology is large, complex, and has many moving pieces. Exchanges exist where […]
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Ray Felch // Preface: Recently, I acquired a few home automation devices, so that I might research Zigbee and get a better understanding of how this very popular wireless technology interconnects with the internet of things (IoT’s) and to determine just how secure this platform really is. I was already somewhat familiar with home automation […]
Dale Hobbs // The Center for Internet Security (CIS) Controls are a recommended set of highly effective defensive actions for cyber defense that provide specific and actionable methods to prevent the most dangerous and pervasive cyber-attacks. They were initially developed by the SANS Institute and were originally known as the SANS Critical Security Controls. They are the combined knowledge of a variety of industry experts from every market into what is effectively […]
Steve Borosh // The year of 2021 has presented some interesting challenges to securing Windows and Active Directory environments with new flaws that Microsoft has been slow to address. In June, @Harmj0y and @tifkin_ released some excellent research and a whitepaper discussing some potential attack paths with Active Directory Certificate Services (“AD CS”) (https://posts.specterops.io/certified-pre-owned-d95910965cd2). This was followed by a modified version of impacket (https://github.com/SecureAuthCorp/impacket/pull/1101) which provides […]
#hivenightmare / #lolwut Jeff McJunkin* // What is it? tl;dr — Unpatched privilege escalation in Windows 10 in nearly all supported builds. The vulnerability (CVE-2021–36934) allows an attacker with limited user code execution on Windows 10 (or 11) to gain administrative privileges locally, allowing any of the following follow-on attacks: Stealing credential material for any […]
tokyoneon // Spoofing credential prompts is an effective privilege escalation and lateral movement technique. It’s not uncommon to experience seemingly random password prompts for Outlook, VPNs, and various other authentication protocols in Windows environments. Adversaries will abuse functionalities built into Windows and PowerShell to invoke credential popups to acquire user passwords. As defined by the MITRE […]
We’ve been having a problem with people that want to play with Security Onion or RITA at home. If a home router does not have a mirror port it can be difficult to try cool/free network monitoring tools. Sure, one could buy another router that has those features. But it is far easier to not […]
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