Mobile Application Testing

Mobile is a fat client running on hostile devices. We assume the attacker has your APK/IPA, can hook runtime behavior, and can man-in-the-middle traffic. If your security depends on “they won’t,” it’s already broken.

What we cover

  • Binary and package analysis (secrets, endpoints, feature flags)

  • Local storage and sensitive data handling

  • Network security (TLS, pinning, traffic integrity)

  • Auth token lifecycle and refresh behavior

  • Abuse of deep links, intents, and inter-app communication

  • Backend API exposure through mobile-only pathways

Common Failure Modes

Secrets and sensitive data exposure

Secrets and sensitive data exposure

  • Hardcoded keys/tokens and debug endpoints
  • Insecure local storage for auth and PII
  • Over-permissive logging and analytics leakage (OWASP Mobile Application Security)
Transport and traffic manipulation

Transport and traffic manipulation

  • Weak TLS handling and bypassable pinning
  • Missing request signing / integrity checks
  • Replayable requests where state is assumed client-side
Runtime tampering and abuse

Runtime tampering and abuse

  • Hookable security checks (root/jailbreak detection theater)
  • Weak attestation assumptions
  • Feature gating enforced only in UI, not server-side

How we work

01

Static review

Static review

binaries, configs, dependencies, secrets

02

Dynamic testing

Dynamic testing

runtime inspection + traffic interception

03

Abuse testing

Abuse testing

auth, storage, and integrity assumptions

04

Backend validation

Backend validation

confirm server controls actually exist

05

Reporting

Reporting

show real user impact and exploit feasibility

Tools and Standards

Core Tooling

  • MobSF for automated static/dynamic mobile triage
  • Frida for runtime instrumentation and bypass testing
  • OWASP Mobile AppSec guidance (MASTG/MASVS ecosystem)
  • Threat-focused test design using real attacker behaviors

Platform coverage

  • iOS and Android
  • Native, React Native, Flutter (as applicable)
PortswiggerGithubMitreOWASP

What we map to

  • OWASP Mobile security controls and test cases (MASTG)
  • NIST SSDF for secure engineering practices that stick
Background

Deliverables

Securing High-Impact Enterprise System

What Our Clients Trust us with

Client Video
▶

We partnered with ImmuneBytes for a security audit of our products. Their expertise and professionalism instilled confidence throughout the process. They promptly addressed our questions, and their thorough analysis significantly enhanced our project's security, safeguarding our users' assets. We highly recommend ImmuneBytes and look forward to future collaborations.

Aruje Jahan

Lokr, Product Owner

ImmuneBytes demonstrated the perfect blend of expertise, commitment, and accountability, resulting in an audit that surpassed expectations. Their thorough approach and dedication ensured a high-quality outcome, reflecting their capability and professionalism in delivering exceptional service.

Dheeraj Borra

Stader Labs, Co-Founder

Robots can do audits, but the personal touch makes a difference. That's why we love Immunebytes! Not only do they do top-class audits, but they also take the time to understand our project and why certain things are done in specific ways. They take the time to ensure we feel heard, which shows in their work.

Yog Shrusti

Farmsent, Co-Founder & CEO

We are thoroughly impressed by their team, who left no scope for a communication gap and provided a quick turnaround time. They took up each requirement with utmost detail and acted on it. It was a pleasing experience to work with you. Looking to working with you guys again!

Mac P

Ethernity, Chief Engineer

What You Need to Know?

Frequently Asked Questions

Minimum: Before every major release. Better: Quarterly, especially if you're pushing frequent updates. Best: Continuous testing integrated into your release pipeline. If you handle sensitive data (payments, health, auth), lean toward quarterly or continuous.

We decompile the app, reverse-engineer the binary, intercept network traffic, and analyze API calls. Hidden endpoints are common—devs forget to remove staging APIs or leave debug features enabled. We find them.

Android apps can expose components (activities, services, broadcast receivers) to other apps. If these aren't properly protected, malicious apps can trigger privileged actions they shouldn't have access to—like bypassing payment screens or accessing restricted data

Apps requesting more permissions than needed, permissions granted at install without user awareness, and background permissions that enable tracking or data exfiltration. We flag over-permissioning and recommend least-privilege models.

iOS or Android (single platform): 1–2 weeks. Both platforms: 2–3 weeks. Complex app with backend integration: 3–4 weeks.

$8K–$25K depending on platform count, feature complexity, and backend integration testing. Use our calculator for accurate estimates.

Secure Systems

Let’s Evaluate Risks and Secure your Systems

+917303699708team@immunebytes.com
Immunebytes

A blockchain security audit firm with the goal of making the Web3 space more secure through innovative and effective solutions.

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