AzDevRecon: Turning Tokens into DevOps Portal
WKL is releasing a new tool focusing on Azure DevOps enumeration with an emphasis on cases where you as an attacker don’t have a username and password to log into…
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CI/CD Attack Path: Reverse Shell via Azure DevOps and GitHub Integration on a Self-Hosted Agent
Attackers can exploit improperly secured Azure DevOps pipelines to execute malicious code on self-hosted on-premises agents creating a direct path from cloud environments to internal infrastructure. In this post, we’ll…
Understanding Type Confusion in Kernel Driver
In this blog post, we will explore type confusion vulnerabilities in Windows kernel drivers. Type confusion occurs when a program mistakenly treats a piece of memory as a different object…
Understanding Out-Of-Bounds in Windows Kernel Driver
In this blog post, we will explore different types of out-of-bounds (OOB) vulnerabilities in Windows kernel drivers. Our objective is to demonstrate how simple mistakes in memory management, structure handling,…
Understanding Null Pointer Dereference in Windows Kernel Drivers
In this blog post, we’ll explore one of the classic yet dangerous bugs—null pointer dereference. We’ll break down what it really means, build a custom vulnerable driver, and see firsthand…
Understanding Arbitrary Access Primitives in Windows Kernel
In this blog post, we will explore some of the most powerful and commonly abused vulnerabilities in kernel-mode: arbitrary access primitives. From reading kernel memory and hijacking execution flows, to…
Understanding Double Free in Windows Kernel Drivers
What is Double-Free? A double-free vulnerability occurs when a program frees the same memory block multiple times. This typically happens when ExFreePoolWithTag or ExFreePool is called twice on the same…
Understanding Use-After-Free (UAF) in Windows Kernel Drivers
In this blog post, we’ll explore use-after-free (UAF) vulnerabilities in Windows kernel drivers. We will start by developing a custom vulnerable driver and analyzing how UAF occurs. Additionally, we will…
Understanding Integer Overflow in Windows Kernel Exploitation
In this blog post, we will explore integer overflows in Windows kernel drivers and cover how arithmetic operations can lead to security vulnerabilities. We will analyze real-world cases, build a…
Harnessing the Power of Cobalt Strike Profiles for EDR Evasion – Part 2
This blog post is a continuation of the previous entry “Harnessing the Power of Cobalt Strike Profiles for EDR Evasion“, we covered the malleable profile aspects of Cobalt Strike and…
Windows Kernel Buffer Overflow
In this blog post, we will explore buffer overflows in Windows kernel drivers. We’ll begin with a brief discussion of user-to-kernel interaction via IOCTL (input/output control) requests, which often serve…
Understanding Windows Kernel Pool Memory
This blog covers Windows pool memory from scratch, including memory types, debugging in WinDbg, and analyzing pool tags. We’ll also use a custom tool to enumerate pool tags effortlessly and…
HuntingCallbacks – Enumerating the Entire system32
What are Callbacks? Certain Windows APIs support passing a function pointer as one of its parameters. This parameter is then called when a particular event is triggered, or a scenario…
LayeredSyscall – Abusing VEH to Bypass EDRs
Asking any offensive security researcher how an EDR could be bypassed will result one of many possible answers, such as removing hooks, direct syscalls, indirect syscalls, etc. In this blog…
Exploiting (GH-13690) mt_rand in php in 2024
This blog post delves into the inner workings of mt_rand(), exposing its weaknesses and demonstrating how these vulnerabilities can be exploited. We’ll examine real-world scenarios and provide insights into more…
Burp Suite vs. Caido: Navigating the Evolving Landscape of Best Web Application Security Testing Tools
In the ever-evolving landscape of web application security testing, selecting the right tools is crucial for ensuring robust security measures. Two prominent contenders in this field are Burp Suite and…
Abusing Azure Logic Apps – Part 1
This will be a multi-part blog series on abusing logic apps. In this blog, we will cover a few scenarios on how we can leverage our privileges on our storage…
Sleeping Safely in Thread Pools
A thread pool is a collection of worker threads that efficiently execute asynchronous callbacks on behalf of the application. The thread pool is primarily used to reduce the number of…
Pivoting from Microsoft Cloud to On-Premise Machines
This article will demonstrate one situation discovered during a recent cloud penetration test that allowed us to pivot from a Microsoft cloud environment to on-premise machines via PSRemoting. Yes, you read the above…
A Technical Deep Dive: Comparing Anti-Cheat Bypass and EDR Bypass
In the evolving landscape of digital security, two prominent challenges emerge that pose significant threats to the integrity of online systems and user data: anti-cheat bypass and EDR bypass. These…
Flipper Zero and 433MHz Hacking – Part 1
What is the Flipper Zero? The Flipper Zero can best be described as a hardware hacking multi-tool. The Flipper Zero is an open-sourced hardware, hand-held device. The ability to explore…
Mockingjay Memory Allocation Primitive
A new post from Security Joes brought attention to a process injection technique previously underutilized in offensive security. The RWX injection primitive, now dubbed “Mockingjay,” offers attackers an advantage to…
Developing Winsock Communication in Malware
Winsock is an API (Application Programming Interface) that provides a standardized interface for network programming in the Windows operating system. It enables applications to establish network connections and send and…
Security & Risk Assessment: Boblov KJ21
I was recently browsing a large online retailer and came across this headline for a product: BOBLOV KJ21 Body Camera, 1296P Body Wearable Camera Support Memory Expand Max 128G 8-10Hours…
Navigating Stealthy WMI Lateral Movement
Introduction In this article, we’ll look at a Python script that uses Windows Management Instrumentation (WMI) to remotely control a target computer. The script makes use of COM to communicate…
Unleashing the Unseen: Harnessing the Power of Cobalt Strike Profiles for EDR Evasion
In this blog post, we will go through the importance of each profile’s option, and explore the differences between default and customized Malleable C2 profiles used in the Cobalt Strike…
“Can’t Stop the Phish” – Tips for Warming Up Your Email Domain Right
Introduction Phishing continues to be a lucrative vector for adversaries year after year. In 2022, for intrusions observed by Mandiant, phishing was the second most utilized vector for initial access.…
Masking the Implant with Stack Encryption
This article is a demonstration of memory-based detection and evasion techniques. Whenever you build a Command & Control or you perform threat hunting, there will be scenarios when you might…
Unveiling OSINT Techniques: Exploring LinkedIn, Illicit Services, and Dehashed for Information Gathering
Introduction Open Source Intelligence (OSINT) is becoming increasingly popular due to its effectiveness in gathering information. The purpose of this blog is to explore the use of LinkedIn, Illicit Services,…
Clutch Highlights White Knight Labs as A Top B2B Company in Pennsylvania
Our team began almost five years ago to give companies the best possible digital experience. After all this time, we’re happy to report that not only are we making progress,…
Bypassing ETW For Fun and Profit
EDR products have the option of using multiple sources to collect information on a Widows operating system. One of these log sources is ETW (Event Tracing for Windows). ETW consumers…
Neutering the EDR
EDR (Endpoint Detection and Response) products attempt to detect misbehavior that slightly deviates from the baseline, by continuously analyzing the memory for inter-process interactions. While a few so-called EDRs are…
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