Windows Credential Access with Mimikatz

Windows Red Team Lateral Movement With PsExec Prerequisites & Requirements In order to follow along with the tools and techniques utilized in this document, you will need to use one of the following offensive Linux distributions: Kali Linux Parrot OS The following is a list of recommended technical prerequisites that you will need in order to get the most out of this course: Familiarity with Linux system administration....

🚀 Lesson Learned: Deploying Qualys Across Multi-OS Environments We recently completed a Qualys deployment for a client spanning Dev, QA, PreProd, and Prod, covering both Windows and Linux environments. ✅ Windows deployment: Seamless and straightforward. ⚠️ Linux deployment: Encountered challenges — mainly around sudo/root access for automation. 💡 Key takeaway: When deploying agents or software across Linux servers: SSH key-based authentication is a lifesaver. Ansible is powerful, but knowing the sudo password (or having passwordless sudo) is critical for mass deployment. Testing on a small set of servers first saves time and headaches. This was a reminder that automation is only as smooth as the permissions you have, and small pre-deployment checks can prevent a lot of friction. #CyberSecurity #DevOps #Linux #Windows #Automation #Qualys #LessonsLearned

Wine 11.0: Elevating Windows Application Compatibility and Security on Linux As Senior Lead Security Analyst at AllSafeUs Research Labs, I've been closely monitoring the evolution of compatibility layers like Wine. The imminent release of Wine 11.0, scheduled for tomorrow, January 13th, marks a significant milestone, promising substantial advancements with NTSync support and improved WoW64 capabilities. This update is not merely about running more Windows applications; it has profound implications for enterprise security posture, operational efficiency, and the broader adoption of Linux in professional environments....

🚨 New Rust Vulnerability Discovered in the Linux Kernel! A recent flaw in the Rust for Linux RFL component highlights that adopting memory-safe languages is a powerful step, but not an automatic security guarantee. 🔍 Key Points from the Report: • The vulnerability, tracked as CVE-2024-40986, is a use-after-free flaw in the `netdevice` module of the Rust for Linux framework. • It received a CVSS score of 7.8 High severity and could allow local attackers to escalate privileges or crash the system. • The issue was introduced in a January 2024 patch and fixed in late June 2024. Major distributions like Ubuntu and Fedora have released updates. • This case shows that while Rust eliminates entire classes of memory bugs, logic errors in API usage can still create security risks. 🛡️ The Bigger Picture: This is a crucial reminder that "memory safety" is not synonymous with "flawless security." The shift to languages like Rust dramatically reduces the attack surface, but secure design and implementation remain paramount. What’s your take? As Rust adoption grows in critical systems, how should our security and code review practices evolve to catch these new types of logic-based vulnerabilities? Link:https://lnkd.in/gjjy3gtE

Sometimes we don’t have the luxury of using a GUI text editor—especially on Linux servers. That’s why learning Vim is so important. Sure, there are other tools like nano. But Vim was the first editor I was exposed to when learning how to code, so it’s the one I’m most comfortable with. Plus, let’s be honest—Vim is kind of awesome. Here are some Vim tricks I often use: In “normal” mode (the default mode when you enter Vim): - G → Jump to the last line - gg → to first line - 0 → to the start of a line - $ → to the end of a line - dd → delete the whole line - E → jump forward to the end of a word - / → search (then use n to navigate the result) #SOC #SOCAnalyst #Cybersecurity #SOCAnalyst #BlueTeam #IncidentResponse #InfoSec #ITSupport #Helpdesk https://lnkd.in/g7HisKx2

🔧 Linux Admin Tip 🔧 Today I resolved an issue where: ❌ Server was online ❌ Website was not loading Root cause: 👉 Firewall blocking port 443 Solution: ✔ Opened port via iptables ✔ Restarted services Always double-check firewall rules before SSL troubleshooting. Have you faced this issue before? 👇 #Linux #SystemAdmin #WebHosting #Troubleshooting

Mastering Privacy Automation: The Hacker’s Guide to System Hardening Across Windows, macOS, and Linux + Video Introduction: In an era of pervasive data tracking and expanding attack surfaces, system hardening has transitioned from an IT administrator's task to a critical skill for every security-conscious professional. Tools like `privacy.sexy` are revolutionizing this space by providing auditable, open-source scripts that automate the enforcement of privacy and security best practices across Windows, macOS, and Linux systems. This article deconstructs the technical underpinnings of privacy automation, providing you with actionable commands, integration strategies, and the foundational knowledge to not just use these tools but to master the principles behind them....

I recently built and documented a home lab where I installed Windows 10 and Kali Linux in Oracle VirtualBox to strengthen my hands-on understanding of virtualization, operating system deployment, and basic networking. What I worked on: -Installed and configured multiple virtual machines in VirtualBox -Configured NAT networking for isolated internet access -Documented the lab using Markdown in GitHub, including setup steps, troubleshooting, and lessons learned This lab serves as the foundation for future networking and security testing, including Windows administration, Linux usage, and Security+-aligned practice. Key takeaways: -How virtualization enables safe testing environments -The importance of proper resource allocation and network configuration -Why clear documentation matters just as much as the technical work Next steps: -expanding this lab with internal networking, a vulnerable machine, and basic security testing. Always open to learning and improving — feedback is welcome. #HomeLab #Cybersecurity #ITLearning #Virtualization #Windows #Linux #KaliLinux #NetworkPlus #SecurityPlus #GitHub

What Types of Linux Firewalls Exist and When Should You Use Each One? Iptables is an older tool. It provides direct access to the rule tables and still appears in many guides. You will run into it even if your system has moved on. Nftables is the newer replacement. It uses a simpler rule structure, making it easier for the kernel to process. Most modern systems lean toward this, even if older tools are still installed. Firewalld is a layer on top that works with zones. It changes rules without restarts, which helps on systems that shift services or networks over time. UFW is a beginner tool that focuses on quick allow and deny actions. Ubuntu and Debian ship it by default because many users only need the basics. Reference: https://lnkd.in/eEDStzd3

🌱 Day 12 of #100DaysOfDevOps 🚀 https://lnkd.in/gwqn8yJ9 Linux Network Services – Apache Port Conflict & Firewall Fix Resolved an Apache reachability issue on App Server 1 where the service was inaccessible on port 3002. 🔹 Identified httpd startup failure due to port already in use 🔹 Used netstat -tulnp to trace the conflict to sendmail 🔹 Reconfigured sendmail to use standard SMTP port 25 🔹 Restarted both sendmail and httpd services 🔹 Updated iptables to explicitly allow inbound traffic on port 3002 🔹 Verified connectivity from Jump host using curl http://stapp01:3002 🔧 Key takeaway: Effective troubleshooting requires checking service status, port conflicts, and firewall rules—in that order—without compromising security. On to Day 13 🚀 #100DaysOfDevOps #DevOps #Linux #Apache #Networking #iptables #Troubleshooting #SystemAdministration #LearningInPublic