Internal Infrastructure Penetration Testing
Emulate insider threats and post compromise scenarios to identify vulnerabilities within your internal network, Active Directory environment, and endpoint configurations before adversaries exploit them.
Overview
Internal infrastructure remains one of the most critical yet frequently overlooked attack surfaces. Once an adversary gains initial access, whether through phishing, a compromised VPN, or a malicious insider, the internal network becomes the primary battleground. Our internal infrastructure penetration testing simulates these post compromise scenarios to evaluate how effectively your organisation can detect, contain, and respond to threats operating within your environment.
Our assessments focus on Active Directory security, network segmentation effectiveness, privilege escalation pathways, and lateral movement opportunities. We leverage the same tools and techniques used by advanced persistent threat groups to provide a realistic evaluation of your internal security posture.
Our Assessment Methodology
Internal Reconnaissance
- Map internal network topology, subnets, and VLAN configurations
- Enumerate Active Directory structure including domains, trusts, and group policies
Credential and Access Testing
- Test for weak, default, and reused credentials across network services
- Perform Kerberoasting, AS REP roasting, and password spraying attacks
Privilege Escalation and Lateral Movement
- Exploit misconfigured Group Policy Objects and delegation settings
- Identify and exploit unpatched systems for local privilege escalation
Domain Compromise Assessment
- Attempt full domain compromise through identified attack chains
- Assess the impact of domain admin level access on business operations
Internal Reconnaissance
- Map internal network topology, subnets, and VLAN configurations
- Enumerate Active Directory structure including domains, trusts, and group policies
- Identify high value targets such as domain controllers, file servers, and databases
- Discover network services, shares, and exposed management interfaces
Credential and Access Testing
- Test for weak, default, and reused credentials across network services
- Perform Kerberoasting, AS REP roasting, and password spraying attacks
- Evaluate NTLM relay and pass the hash attack opportunities
- Assess service account security and managed identity configurations
Privilege Escalation and Lateral Movement
- Exploit misconfigured Group Policy Objects and delegation settings
- Identify and exploit unpatched systems for local privilege escalation
- Test lateral movement pathways using tools such as BloodHound and CrackMapExec
- Evaluate network segmentation controls and firewall rule effectiveness
Domain Compromise Assessment
- Attempt full domain compromise through identified attack chains
- Assess the impact of domain admin level access on business operations
- Evaluate detection and response capabilities against simulated attacks
- Document complete attack paths from initial access to domain dominance
Key Outcomes
AD Security Posture
Comprehensive assessment of Active Directory configuration, trust relationships, and privilege boundaries
Attack Path Analysis
Visual mapping of exploitable pathways from standard user to domain administrator access
Segmentation Review
Evaluation of network segmentation effectiveness and lateral movement containment controls
Detection Gap Analysis
Assessment of your security monitoring and incident response capabilities against simulated threats
AD Security Posture
Comprehensive assessment of Active Directory configuration, trust relationships, and privilege boundaries
Attack Path Analysis
Visual mapping of exploitable pathways from standard user to domain administrator access
Segmentation Review
Evaluation of network segmentation effectiveness and lateral movement containment controls
Detection Gap Analysis
Assessment of your security monitoring and incident response capabilities against simulated threats
Deliverables
Internal Penetration Test Report with complete attack chain documentation
Active Directory Security Assessment with configuration recommendations
Attack Path Visualisation Report using BloodHound analysis
Network Segmentation Effectiveness Review
Executive Summary with risk prioritisation and strategic guidance
Remediation Verification Report following retesting engagement
Ready to Get Started?
Identify and eliminate internal attack pathways before adversaries exploit them. Our team simulates real world insider threats to strengthen your internal security posture.