Thick Client Pentesting
Applications aren’t all browser-based. Many still rely on thick clients—desktop software that interacts with local resources, internal APIs, and backend systems.
Resonance tests these apps like an attacker would: reverse engineering logic, intercepting communications, and breaking assumptions about trust.
Our Approach
We assess Windows, macOS, and cross-platform applications—whether standalone, connected to internal systems, or interfacing with cloud APIs. That includes:
– Authentication and session handling
– Local storage and insecure data caching
– API communication and encryption misuse
– Privilege escalation through local execution
– Insecure DLL loading, code injection, and IPC abuse
– Weak obfuscation and bypassable protections
– Business logic flaws exposed at the client level
How We Work
We reverse engineer binaries, analyze traffic, inspect memory, and dig into how the app behaves in the real world. We look beyond known CVEs—identifying how a malicious user or insider could abuse the application directly.
Realistic Scenarios, Not Just Static Checks
Can a user bypass access controls by modifying client-side logic? Can they tamper with requests to escalate privileges? Is sensitive data recoverable from memory or logs? We answer those questions with real, hands-on testing.
Reporting That Makes Sense
Findings are ranked by impact and exploitability—with clear steps to reproduce, fix, and verify. We also walk your dev team through the results, review patches, and support follow-up tests if needed
We Test Like Real Attackers—Because That’s Who You’re Up Against
We don’t run generic scans or follow scripts. Our team mimics real-world adversaries to identify how your systems can actually be compromised.
Recon with Purpose
We start with targeted reconnaissance—mapping exposed services, third-party integrations, misconfigured assets, leaked credentials, and shadow infrastructure. Everything a motivated attacker would find, we do too.
End-to-End Surface Analysis
We break down your app, infra, and cloud stack the way an attacker would. That includes APIs, session flows, identity paths, data flows, access controls, and business logic—so no layer is left unchecked.

Our approach

We provide enterprise-grade protection, adapted for smaller teams. No need for in-house experts—our tools are simple, effective, and scalable.

We’re a dedicated team—our work doesn’t stop after delivering a one-time audit report. We stay involved to help you track issues, monitor risks, and improve your security posture over time.

We help you stay ahead with tools that detect issues early, reduce exposure, and support your response—not just once a year, but continuously.
Resonance offers a variety of custom pricing options
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