Thick client applications are desktop software installed on user devices that perform complex operations locally while securely communicating with backend systems. They are commonly used in critical environments such as banking, healthcare, ERP, and POS systems.
Because these applications often handle sensitive data and critical business logic, they are prime targets for attackers exploiting flaws like insecure local storage, weak authentication, and unvalidated inputs.
Our Thick Client Penetration Testing service thoroughly evaluates your desktop applications by uncovering hidden vulnerabilities in client-side controls, backend communications, and data storage. We simulate sophisticated attack scenarios to reveal weaknesses that could disrupt operations or expose sensitive data.
Network Communication Analysis
Local Data Storage Security
Binary and Code Analysis
Authentication & Authorization Testing
Input Validation & Injection Attacks
Memory & Runtime Analysis
Encryption & Secure Storage
Configuration Review
Define target applications, versions, backend endpoints, and available test accounts. Establish testing objectives, rules of engagement, and communication channels.
Analyze source code (if available) or reverse-engineer binaries to uncover insecure coding practices, hardcoded secrets, or embedded credentials.
Execute the application while monitoring runtime behavior, network communications, and memory usage to identify exploitable conditions.
Evaluate credential handling, session management, role-based access controls, and potential privilege escalation paths.
Test inputs for injection vulnerabilities, buffer overflows, and business logic bypasses that could compromise application integrity.
Examine local files, databases, and registry entries for sensitive data exposure, improper encryption, or residual information.
Intercept and analyze client-server communications to test encryption strength, detect replay vulnerabilities, and ensure integrity of transmitted data.
Deliver a complete report including executive summary, methodology, prioritized findings with PoCs, business impact, and actionable remediation, followed by a restitution meeting.
Thick client applications often process sensitive data and business operations locally, making them high-value targets. Vulnerabilities in local storage, communication, or privilege management can lead to data leaks, unauthorized transactions, or full system compromise. This service identifies and mitigates those risks before they impact your operations.
Typically around 5 business days, depending on application size, complexity, and available documentation.
All testing is safe and non-destructive. When performed in production, activities are coordinated with your team to minimize impact. Intrusive tests are only executed after explicit approval.
