How I Passed CRTP on My First Attempt: Why Methodology and Reconnaissance Are Everything

The CRTP (Certified Red Team Professional) exam doesn't waste time with multiple-choice questions or theoretical scenarios. Altered Security drops you straight into a fully patched enterprise Active Directory environment consisting of five target servers and a foothold student machine. You are given 24 hours to gain OS-level command execution on every single target. Simple as that.

That practical, hands-on structure is exactly why candidates who only know traditional written exams often find it challenging, while those who invest time in real hands-on lab practice can succeed regardless of prior formal background. The exam focuses purely on post-exploitation within Active Directory — abusing native features, Kerberos delegation, forest trusts, certificate services (AD CS), and misconfigured ACLs rather than throwing unpatched software exploits.

Because the lab reflects a real corporate environment, trying to blindly run public tools or copy-paste commands will quickly lead to a wall. Passing CRTP on your first try comes down to systematic methodology, thorough reconnaissance, and sharp operational security (OPSEC). The course doesn't just teach you how to execute attacks — it teaches you how to map an environment cleanly, maintain full awareness of your tradecraft, and operate seamlessly within the domain.

Here is how I approached the exam, built my workflow, and compromised the entire environment on my first try.

My Background & Mindset Going In

Before taking the CRTP, I already had a solid background in offensive security through penetration testing, bug bounty hunting, and vulnerability research. While I was familiar with security concepts and low-level mechanics, CRTP was my first structured deep dive into pure Active Directory post-exploitation.

One major focus I maintained throughout the course was operating with proper operational security (OPSEC). Learning to blend into legitimate traffic and navigate host defenses — whether through AMSI bypasses, handling PowerShell logging/ETW patching, or dealing with Microsoft Defender for Endpoint (MDE) — was an essential habit for every module.

My goal going in wasn't to memorize syntax or rush through the labs. I wanted to internalize the true post-exploitation mindset:

• Operational Awareness: Managing tradecraft cleanly by bypassing host controls (AMSI, ETW, script block logging) and blending into legitimate domain traffic.
• No Reliance on Scanners: Moving away from automated vulnerability tools in favor of manual, deliberate techniques.
• Deep Understanding: Learning why a misconfiguration exists rather than blindly executing scripts.
• Continuous Enumeration: Treating recon as an ongoing cycle with every new privilege gained, rather than a one-time step.

The CRTP Approach: Why Recon Drives the Engine

Many candidates enter the 24-hour exam expecting a sprint. They get their initial shell on the student machine and immediately start attempting noisy local privilege escalation scripts or throwing public binaries.

The CRTP course structure intentionally discourages this. Altered Security designs the environment to reflect modern enterprise defenses, including live Microsoft Defender components. If you do not know what you are looking at before you execute a command, you will fail or waste critical hours chasing rabbit holes.

During my preparation and exam, thorough reconnaissance and careful execution accounted for 80% of the work.

The Exam & Report

On exam day, sticking to my methodology made the process smooth and controlled. I managed to compromise all 5 target machines and achieve full Enterprise Admin privileges in 8 hours.

After completing the hands-on objectives, I spent another 2 hours putting together a fully detailed report. My final deliverable ended up being approximately 50 pages, detailing a step-by-step walkthrough of my attack paths, evidence screenshots, clear command logs, and practical, actionable remediation strategies for each underlying misconfiguration.

Final Thoughts

I successfully passed the CRTP on my first attempt. Looking back, it was an incredible learning experience that transformed how I view Active Directory security.

If you are preparing for the exam, remember: focus on your methodology, respect the environment's security controls, and never treat enumeration as a one-step task. When you focus on understanding how Active Directory functions and maintain solid operational awareness throughout your engagement, the exam becomes a rewarding showcase of your skills.