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Find out what attackers can pull out of your desktop app.
Book a free scoping call. You’ll get clear recommendations, a timeline and a fixed quote — whether you go ahead with us or not.
+91 98183 63944Desktop and client-server applications often hold credentials, business logic and direct database access on the user’s machine. We reverse-engineer, intercept and attack them the way a real adversary would — and show you exactly how to fix what we find.
Thick clients run on endpoints you don’t control. Anything inside them — keys, SQL queries, licence checks, business rules — can be extracted, modified or replayed. Automated scanners barely touch these apps, so we test them by hand, from the binary all the way to the backend.
| AUTOMATED SCANNER | XTREME INFOSEC THICK CLIENT TEST | |
|---|---|---|
| Known vulnerable libraries | ✓ | ✓ |
| Binary & reverse-engineering analysis | ✕ | ✓ |
| Traffic interception (HTTP & non-HTTP) | Limited | ✓ |
| Client-side control bypass | ✕ | ✓ |
| Secrets in local storage & memory | ✕ | ✓ |
| Server-side API & database testing | Limited | ✓ |
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Click an area to see what we look for — and an example of what we find.
Decompiling and reverse-engineering the application to uncover what it hides.
Intercepting and manipulating client–server traffic — HTTP and proprietary protocols.
Whether access controls are enforced on the server — not just in the client.
Secrets and sensitive data left behind on the user’s machine.
How the app interacts with the operating system and other software.
The backend APIs, services and databases the client talks to.
Agree the application, versions, user roles and test environment.
Map the architecture, binaries, protocols and data flows.
Reverse-engineer, intercept and attack the client and server.
Every finding verified, rated by risk, with clear fixes.
We confirm your fixes work before you close the issue.
Every engagement is scoped to your application. Tell us what you need and we’ll send a fixed quote.
A focused application assessment — ideal before a launch, a release or an audit.
A complete assessment of the client, its network traffic and the backend it relies on.
Regular testing that keeps pace as your application changes.
“Their penetration testing methodology was thorough and aligned with OWASP standards. The final report was detailed, actionable, and easy for our developers to understand.”
“Xtreme InfoSec identified critical vulnerabilities that other vendors missed, with excellent remediation support.”
A thick (or fat) client is a desktop or client-server application that does significant processing on the user’s machine — for example trading terminals, ERP and accounting software, healthcare systems or internal admin tools.
No. We can test the installed application as a black box. Source code or debug builds help us go deeper and faster, so we recommend sharing them where possible.
Windows and macOS desktop applications built with .NET, Java, C/C++, Electron and similar frameworks — along with the APIs, services and databases they connect to.
Absolutely. Every finding comes with clear, step-by-step fixes, and our team stays with your developers until the critical issues are closed.
Book a free scoping call. You’ll get clear recommendations, a timeline and a fixed quote — whether you go ahead with us or not.
+91 98183 63944