Built For Penetration Testing
Thick-client applications process data both on the user’s machine and on the server tier, exposing a much larger attack surface than a typical web app — local storage, IPC, custom protocols, binary tampering, and DLL hijacking all sit in scope.
Our engagement covers static binary review, runtime instrumentation, network-protocol analysis, and the server-side APIs the client talks to — closing both the local and remote halves of the application.
Schedule a ConsultationLocal Attack Surface
Files, registry, named pipes, IPC, and DLLs can all be tampered with by a local attacker.
Hidden Protocols
Custom binary protocols are rarely audited and often miss authentication and integrity checks.
Reverse-Engineering
Hardcoded secrets and weak obfuscation expose business logic and keys to extraction.
Compliance Pressure
PCI-DSS, RBI, and SEBI guidance increasingly require thick-client assessment for trading and banking software.
Reduce Risk, Protect Trust
Local Attack Surface
Files, registry, named pipes, IPC, and DLLs can all be tampered with by a local attacker.
Hidden Protocols
Custom binary protocols are rarely audited and often miss authentication and integrity checks.
Reverse-Engineering
Hardcoded secrets and weak obfuscation expose business logic and keys to extraction.
Compliance Pressure
PCI-DSS, RBI, and SEBI guidance increasingly require thick-client assessment for trading and banking software.
Privilege Escalation
Insecure installers and update routines are a reliable EoP path on Windows endpoints.
Server-Side Trust
Backend services often over-trust the client — a swap of the binary breaks the security model.
Penetration Testing Coverage
End-to-end validation across thick-client applications.
Why Customers Choose This
Full-Stack Coverage
Both client and server tiers tested in a single engagement.
Audit-Ready Evidence
Findings packaged with PoC, screenshots, and CVSS for compliance reviewers.
Reverse-Engineer Defense
Recommendations on obfuscation, integrity checks, and anti-tamper controls.
Reduced EoP Risk
Local privilege paths closed before they show up in real-world incidents.
Faster Remediation
Per-finding fix guidance referenced to OWASP MASVS and CWE.
Vendor-Neutral
No tool, language, or framework bias — we test what you ship.
Risks We Surface
Hardcoded Secrets
API keys, tokens, and credentials embedded in the binary.
Insecure IPC
Pipes, sockets, COM, and shared memory without authentication or ACLs.
Memory Tampering
Client-side checks bypassable by patching memory at runtime.
Installer Flaws
Unquoted service paths, insecure permissions, DLL planting in updaters.
Crypto Weakness
Custom or broken cryptography in client-server channels.
Backend Trust
Server APIs assuming the client is honest about scope and role.
What You Receive
Technical Report
Per-finding evidence with reproduction steps, severity, and remediation.
Executive Summary
Business-level overview for leadership and audit teams.
Hardening Checklist
Concrete controls mapped to OWASP MASVS and CWE.
Remediation Tracker
Living tracker of every finding, owner, status, and target date.
Retest Attestation
Post-fix re-validation with a clean letter for auditors.
PoC Artifacts
Tampered binaries, traffic captures, and scripts for engineering replay.
Our Engagement Process
Scoping
Map binaries, server endpoints, build pipeline, and user roles.
Static Analysis
Decompile binaries, hunt secrets, map calls to the backend.
Dynamic Analysis
Instrument the client, fuzz the protocol, intercept and replay traffic.
Local Privilege
Probe installer, services, scheduled tasks, and update routines.
Backend Testing
Treat the server APIs as a web target — OWASP Top 10 + business logic.
Reporting & Retest
Deliver findings, support fix cycles, and re-validate.
Trusted Partner
Specialist Team
Reverse engineers comfortable with C/C++, .NET, and JVM targets.
Both Halves Tested
Client and server in the same engagement — no blind spots.
Hands-On Remediation
We stay engaged through fix cycles, not just drop a report.
Audit-Friendly
Reports written for the auditor as much as the engineer.
Pragmatic Findings
No noisy false positives — every finding is reproducible.
Knowledge Transfer
Workshops and walkthroughs leave your team stronger.