Category: Servers
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Revisiting & Revising An Old PowerShell Tool – Quickly Find The Largest Files
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…
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VMware vCenter CVE-2021-21972 Scanner
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…
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Disabling PowerShell v2 with Group Policy
In this post I am going to tackle something that I have been wanting to play around with for awhile, disabling PowerShell v2 at an enterprise scale. As a former systems engineer and now a security engineer, I have a love/hate relationship with PowerShell since it is amazingly useful but also incredibly dangerous in the…
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Everything You Need To Know To Get Started Logging PowerShell
Intro Recently, I have been spending a lot of time researching and working with PowerShell logging. Since PowerShell is readily available (built-in to the OS) and has an assortment of functionality that can be used across the entire kill chain right out of the box, it is an ideal candidate for virtually any type of…
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Gathering Windows, PowerShell and Sysmon Events with Winlogbeat – ELK 7 – Windows Server 2016 (Part II)
In part I of this series, Installing ELK 7 (Elasticsearch, Logstash and Kibana) on Windows Server 2016, I covered the following: Installing and configuring Elasticsearch, Logstash, and Kibana as Windows services Installing and configuring Winlogbeat to forward logs from the ELK server into ELK Installing and configuring Curator as a scheduled task (optional) Now, in…
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Installing ELK 7 (Elasticsearch, Logstash and Kibana) – Windows Server 2016 (Part I)
I am a huge fan of the Elastic stack as it can provide a great deal of visibility into even the largest of environments, which can help enable both engineering and security teams rapidly triage technical issues or incidents at scale. There’s also the fact that unlike Splunk, the Elastic software is free to use…
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Manually Updating the Firmwares on a Dell PowerEdge R610
Updating firmwares yet again… Shortly after the last time I posted on updating firmwares on Dell PowerEdge R610, I found out that Dell dropped support for all 11G servers from the SUU package along with the Lifecycle controller packages which basically broke the entire method I posted. However all hope is not lost, and the…
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Home Lab Cooling Upgrade!
In this video I show off my latest project – Upgrading the cooling system on my home lab in hopes of making it a little more efficient while quieting things down a bit. The original setup consisted of the following: 2 x 6″ Ducts with Fans 6″ Flexible Ducting Originally there was just a single…
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Apache Struts CVE-2018-11776 – Testing, Analyzing, & Detection
Intro Any time a new Apache Struts vulnerability comes out it should be taken pretty seriously as there are many “mission critical” systems that are leveraging the framework, with a considerable amount of them being public facing. Unfortunately, as a former Sys Ad I can tell you that many of these systems will go on…
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My Journey Into The OSCP
Intro This post is going to break away from my typical technical how-to style posts, and talk a little bit about something that has been a personal goal of mine for some time – The Offensive Security Certified Professional. When it comes to even thinking about enrolling in the OSCP, most people will question if…
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