Introduction 2022 was a tough year. It seemed like no one was safe. Nvidia, Samsung, Ubisoft, T-Mobile, Microsoft, Okta, Uber—and those were just some of Lapsus$’s breaches. What’s a Script Kiddie to do to be better protected in 2023? Another year in the books, and it was another big year for cybersecurity. While 2022 did…
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Business Email Compromise (BEC) within the Microsoft 365 environment is becoming a more common attack vector. In case you’re unfamiliar with what exactly BEC entails, it’s when an attacker or unauthorized user gains access to a business email account via social engineering. Most commonly, an attacker compromises an account, intercepts email conversation(s), and uses this…
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Nowadays, password managers are king. We use password managers to secure our most sensitive credentials to a myriad of services and sites; a compromise of the password manager could prove devastating. Due to recently disclosed critical Common Vulnerabilities and Exposures (CVEs) involving ManageEngine’s Password Manager Pro software, a client came to us at TrustedSec, wondering:…
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There are two common reasons you may want to change a user’s password during a penetration test: You have their NT hash but not their plaintext password. Changing their password to a known plaintext value can allow you to access services in which Pass-the-Hash is not an option. You don’t have their NT hash or…
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Having spent a career working with Group Policies, I thought now might be a good time to give an overview of it and I felt like doing a little writeup about Group Policies. I especially want to highlight why having admin access to clients can be really bad. It is important that everyone understands the weaknesses…
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Many of our customers follow the best practice of creating separate accounts for day-to-day tasks and administrative ones. In the event of an attack, using separate accounts is often a great way to slow things down and give security teams a little extra time for discovery and identification of an attack. Because many attacks happen…
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IT departments around the globe spend countless hours and money ensuring that their company’s data and infrastructure are properly secured. Startup company? Install a firewall and maybe get an antivirus subscription. Past the startup phase? Upgrade your firewall to have an Intrusion Prevention Sensor (IPS) and/or maybe an Intrusion Detection Sensor (IDS). Hitting the revenue…
ReadThis blog was written by Martin Bos, Senior Principal Security Consultant – TrustedSec Unless you’ve been living under a rock for the past few months you have probably heard about the dump from the 2012 LinkedIn hack being released. TrustedSec was able to acquire a copy of the list and use it for research purposes. Our…
ReadA while back Jeremy Druin asked me to be a part of a password cracking class along with Martin Bos. I was to cover the very basics, things like “What is a password hash?”, “What types are there?”, and “What is the history of passwords, hashes and cracking them?”. This got me thinking about a…
ReadI’ve been searching quite a while now for the best way to search for domain admin tokens, once admin rights are attained on a large number of systems during a pentest. Normally, I run “psexec_loggedin_users” within Metasploit, spool the output to a file, then egrep it for users in the “Domain Admins” group. This often…
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