Computers | RobWillis.info

Revisiting Purple Teaming AD with BloodHound CE & AD-Miner

robwillisinfo — Fri, 05 Dec 2025 01:07:35 +0000

A few months ago, I published a blog post that involved managing Bloodhound CE with Docker Compose: Purple Teaming AD with BloodHound CE & AD-Miner Since then, BloodHound CE has seen some pretty significant improvements, including new tools to simplify container management. Because of this, I wanted to revisit this setup and put together an […]

The post Revisiting Purple Teaming AD with BloodHound CE & AD-Miner first appeared on RobWillis.info.

Installing Omarchy On VMware Workstation

robwillisinfo — Wed, 05 Nov 2025 11:12:29 +0000

If you’re trying to run Omarchy on VMware Workstation, you might be experiencing some issues with the GUI after what appears to be a successful installation. With the basic graphics option configured on the virtual machine, Omarchy will boot but then fall to a black screen right after entering the password. Enabling accelerated graphics gets […]

The post Installing Omarchy On VMware Workstation first appeared on RobWillis.info.

Home Lab (2025)

robwillisinfo — Sat, 04 Oct 2025 23:10:14 +0000

It’s been a while since I’ve made a video, and even longer since I’ve shown my home lab setup! I’ve been doing some cleaning and thinking about upgrades, so I figured now would be a good time to show where everything currently stands.

The post Home Lab (2025) first appeared on RobWillis.info.

Introducing Invoke-EncryptionSimulator: A PowerShell Tool for Simulating Late-Stage Ransomware Attacks

robwillisinfo — Thu, 14 Mar 2024 04:53:37 +0000

Invoke-EncryptionSimulator Invoke-EncryptionSimulator is designed to be a simple and safe way to emulate the encryption stage of a ransomware deployment to aid in development and testing of controls focusing on file system level changes rather than process related telemetry. Invoke-EncryptionSimulator is designed to be a simple and safe way to emulate the encryption stage of […]

The post Introducing Invoke-EncryptionSimulator: A PowerShell Tool for Simulating Late-Stage Ransomware Attacks first appeared on RobWillis.info.

Analyzing & Detecting IIS Backdoors

robwillisinfo — Sat, 05 Nov 2022 08:00:12 +0000

IIS Extensions As Backdoors Microsoft recently published an interesting blog explaining how they’ve noticed a new trend where attackers have been leveraging Internet Information Services (IIS) extensions to covertly backdoor Windows servers: https://www.microsoft.com/security/blog/2022/07/26/malicious-iis-extensions-quietly-open-persistent-backdoors-into-servers/ The Microsoft post contains a wealth of information on this topic, but I really wanted to dig through the specifics in order […]

The post Analyzing & Detecting IIS Backdoors first appeared on RobWillis.info.

New Tool! Invoke-RPCMap: PowerShell Script for Remote RPC Service Enumeration

robwillisinfo — Mon, 27 Jun 2022 02:13:00 +0000

Invoke-RPCMap Invoke-RPCMap can be used to enumerate local and remote RPC services/ports via the RPC Endpoint Mapper service. This information can useful during an investigation where a connection to a remote port is known, but the service is running under a generic process like svchost.exe. This script will do the following: Create a local log […]

The post New Tool! Invoke-RPCMap: PowerShell Script for Remote RPC Service Enumeration first appeared on RobWillis.info.

Revisiting & Revising An Old PowerShell Tool – Quickly Find The Largest Files

robwillisinfo — Tue, 06 Apr 2021 07:05:37 +0000

A few years ago I wrote a script to help find the largest files on a drive using PowerShell without the need to install any additional software. This script was extremely useful for quickly narrowing in on files that may be easy to remove in order to help free up disk space, particularly in situations […]

The post Revisiting & Revising An Old PowerShell Tool – Quickly Find The Largest Files first appeared on RobWillis.info.

VMware vCenter CVE-2021-21972 Scanner

robwillisinfo — Sat, 27 Feb 2021 10:31:52 +0000

In this post, I am releasing a PowerShell POC script that will scan the specified target hosts and attempt to detect those that are vulnerable to VMware vCenter CVE-2021-21972. You can find the script, Invoke-CVE-2021-21972-Scan.ps1, on my github here: https://github.com/robwillisinfo/VMware_vCenter_CVE-2021-21972 The script executes in the following order: Create a log file, default log name is […]

The post VMware vCenter CVE-2021-21972 Scanner first appeared on RobWillis.info.

Defending Against PowerShell Attacks

robwillisinfo — Mon, 22 Feb 2021 04:07:54 +0000

It’s no secret that I am a big fan of PowerShell and recently I have been spending a considerable amount of time researching and testing it from a security perspective. While there is a lot of solid information out there, I have found it can still be a challenge to really get a solid grasp […]

The post Defending Against PowerShell Attacks first appeared on RobWillis.info.

Invoke-Decoder – A PowerShell script to decode/deobfuscate malware samples

robwillisinfo — Sun, 02 Aug 2020 03:57:08 +0000

I have been spending a lot of time reviewing PowerShell based attacks and malware over the last few months and I wanted to take some time to really understand how some of the common obfuscation techniques really work under the hood. The best way for me to learn more about something like this is to […]

The post Invoke-Decoder – A PowerShell script to decode/deobfuscate malware samples first appeared on RobWillis.info.