Years ago, I wrote a series of posts covering the basics of building and exploiting vulnerable machines for learning purposes. With my two most recent posts covering virtual labs, it seems like an appropriate time to revisit the topic. I've used the misconfiguration I'm going to cover in this article on several Capture the Flag events and mock pentests over the years. It ... READ MORE
Offense
Building a Lab Network – Faux Corporate Networks
Last month, I mentioned the possibility of setting up a second virtual firewall in a lab environment to simulate a corporate network with mock internal and external spaces. I frequently do this for CTFs, student pentesting projects, and more. Offensive security training is rapidly moving towards realistic environments. Organizations like HackTheBox which historically have ... READ MORE
Building a Lab Network in Proxmox and Sophos UTM9
One of the best ways to acquire and maintain an offensive security skill set is to build a home lab and populate it with intentionally vulnerable machines. The most straightforward option is to simply spin up VMs in VirtualBox or VMWare Player and manage everything locally. To take things to the next level, however, you really need a hypervisor like ESXi or Proxmox. Nowadays, ... READ MORE
Enumerating Emails via Office.com
On a recent penetration test, I discovered that manually attempting to log into Office.com would give an indication as to whether an email address exists or not. Both of the techniques I was familiar with for Office365 username enumeration, using the Autodiscover API and ActiveSync, have both been fixed so this was definitely something worth exploring. I captured a few ... READ MORE
Socially Susceptible – Augmenting phishing with machine learning classifiers
Crafting sophisticated phishing campaigns is a necessary part of offensive tradecraft for testing security conscious and complex environments. The old adage goes "a chain is only as strong as its weakest link". Historically this chain has been people, but with increased resources and focus on testing, attackers have worked to find ways to increase their chances of gaining a ... READ MORE
Netscaler Still in the Wild
It has been two months since Cirtix released details about CVE-2019-19781, a vulnerability found in their NetScaler product. In that time, we here at RSM have been working with several of our clients to help mitigate this vulnerability and remediate the effects of any successful compromises on their systems. Unfortunately, it appears that many more networks are affected by this ... READ MORE
Solarwinds
How a Default SolarWinds Guest Account Can Facilitate Compromise – and How to Fix It The Problem SolarWinds is a leading provider of network monitoring and configuration management software. However, there’s a default feature on the SolarWinds Orion Network Performance Monitor tool that could be putting your organization at big risk. The issue is a default guest account ... READ MORE
Google Dorks
Google Dork: Finding the Information You Don’t Know Exists Reconnaissance Reconnaissance. It’s a technique not unknown to most teenagers, and if we’re honest, we’ve all done it ourselves too – Googling the person you just met at the bar, Facebook stalking the new person at work, we all know the drill. This is the age of social media and data breaches, so we all know there’s a ... READ MORE
Saurus’ Guide to Security+
Hello fellow security professionals and those aspiring to be! Saurus here and excited to write to you on a new blog post. Being a consultant keeps me fairly busy. In addition to managing my workload I recently obtained my COMPTIA Security+ certification. While the experience of taking the exam is still fresh in mind, I wanted to draft up a blog post about some of the ... READ MORE
Spam Filter Evasion With King Phisher
It's no secret that phishing is the top attack vector when it comes to external compromise. So when it comes to penetration testing this is a vector that we can not ignore. However, as consultants, we are interacting with different clients and environments almost every week. Much like endpoint protection, there are a multitude of different spam filters and protection controls ... READ MORE