Binary and package analysis
Inspect executables, libraries, installers, manifests, signatures, debug artifacts, hardcoded endpoints, secrets, unsafe compiler options, permissions, and dependency loading behavior.
WINDOWS · MACOS · DESKTOP · PROTOCOLS
Thick Client Penetration Testing
Desktop and thick client penetration testing for binaries, local storage, update mechanisms, IPC, custom protocols, backend trust, and privilege boundaries.
EXPERT-LED · MANUAL VALIDATION
Assess what the desktop client exposes and what the server trusts
Desktop software blends local operating-system risk with remote APIs, proprietary protocols, update channels, and privileged components. Testing examines the client as attacker-controlled while validating whether local manipulation can cross security boundaries.
HOW THE TESTING FEELS IN PRACTICE
Thick client penetration testing, done by hand
Automation gives coverage. The findings that matter come from someone chaining weak controls together, questioning assumptions, and checking what a motivated attacker could reach next.
- Manual attack-path testing, not a scanner export
- Evidence you can reproduce and hand to engineering
- One retest round after remediation
ASSESSMENT COVERAGE
What the test covers
Coverage is finalized during scoping, then tested with a mix of systematic checks and manual attack-path analysis.
Local data and credential handling
Review configuration, logs, caches, databases, temporary files, registry or preferences, keychain use, tokens, memory exposure, crash dumps, and multi-user separation.
IPC and local attack surface
Test named pipes, sockets, RPC, COM, XPC, services, URL handlers, file associations, shared memory, local web servers, plugins, and trust between low and high privilege components.
Update and supply-chain controls
Assess update discovery, transport, signatures, rollback, package integrity, installer permissions, search-order hijacking, repair behavior, and whether untrusted users can influence privileged updates.
Network protocols and backend APIs
Proxy or instrument standard and custom protocols to test authentication, authorization, certificate validation, replay, message integrity, API trust, and client-controlled values.
Privilege and operating-system boundaries
Validate file and directory permissions, service configuration, DLL or library loading, helper tools, scheduled tasks, sandbox assumptions, and paths from standard user to elevated execution.
RULES OF ENGAGEMENT FIRST
Penetration testing methodology
Every phase is designed to produce defensible evidence without taking unnecessary operational risk.
Scope and rules of engagement
Agree targets, environments, identities, exclusions, test windows, data handling, escalation contacts, and stop conditions before testing starts.
Architecture and threat review
Map sensitive assets, trust boundaries, data flows, likely attackers, and high-impact misuse cases so the test reflects the product rather than a generic checklist.
Systematic coverage
Use repeatable tooling and standards-aligned checks to cover the agreed surface while recording assumptions, constraints, and evidence.
Manual attack-path testing
Challenge identity, authorization, workflows, configuration, integrations, and chained weaknesses that require human context and adversarial reasoning.
Safe impact validation
Use the minimum proof required to establish exploitability. Destructive actions, persistence, and unnecessary data access stay outside scope unless separately authorized.
Report, remediation, and retest
Deliver risk context, reproduction evidence, root-cause fixes, and a stakeholder walkthrough. One retest round verifies agreed remediation.
ACTIONABLE OUTPUTS
What you receive
The report is written for two audiences: stakeholders who need a clear risk decision and engineers who need enough detail to reproduce and fix the issue.
- Executive summary and risk themes
- Scope, assumptions, exclusions, and coverage record
- Prioritized findings with evidence and reproduction steps
- Business impact and severity rationale
- Root-cause remediation guidance
- Retest status and residual-risk notes
KEEP REVIEWING YOUR CONTROLS
Security checklists for your team
COMMON SCOPING QUESTIONS
Thick client penetration testing FAQ
Which desktop platforms can be tested?
Windows and macOS applications can be scoped. Linux desktop or specialized clients can be reviewed after confirming packaging, runtime, and test-environment requirements.
Do you test installers and auto-update mechanisms?
Yes. Package integrity, signatures, transport, rollback, permissions, privileged helpers, repair behavior, and library loading paths can be included.
Can proprietary network protocols be tested?
Yes when a test environment, representative traffic, protocol context, and safe operating constraints are available. Instrumentation and message manipulation may be used.
Is source code required?
No. A black-box binary assessment is possible. Targeted source or symbols can improve analysis of complex local trust and update logic when available.
CLEAR SCOPE · CONTROLLED TESTING · USEFUL REPORT
Request a Thick client penetration testing scope
Share the target, environment, roles, and objective. The service field is already selected so you can send the right context quickly.
- Written scope and assumptions before testing
- Safe rules of engagement and escalation path
- Manual validation with reproducible evidence
- Remediation walkthrough and one retest round
TELL US ABOUT YOUR SCOPE
Request a security assessment
Share a few details about the target and your goals. We will reply with the right testing approach and a clear proposal.
Protected against automated submissions. Only submit systems you own or are authorized to test. Do not include passwords, API keys, or other secrets.