iOS
Keychain use, jailbreak detection and iOS-specific storage and permissions.
Native Swift and Objective-C, or cross-platform builds.
4.9on G2
Mobile Application Penetration Testing Services
Protect your users and your brand by finding the flaws in your iOS and Android apps before attackers do, end to end, from the device to the backend.
When FICO needed security services, I immediately turned to them. Their expertise, efficiency, and thoroughness continue to impress.Hilik Kotler, CISO, FICO
We test the whole mobile journey, not just the app.
Most of a mobile app's risk sits outside the screen: in local storage, in the traffic, in the backend API and in the SDKs bundled with it. We test the client side, the server side and the APIs between them.
Testing runs against OWASP MASVS and MASTG, and goes further into the business logic of your mobile flows, the complex issues automated tools and other vendors consistently miss.
Penetration testing, done properly.
- Expert ethical hackersExperienced security professionals with deep expertise in offensive security.
- Advanced hybrid testingStrategic automation for common issues, manual deep-dive testing for the hard-to-find ones.
- Tailored to your environmentEvery test is customized, so results are accurate and relevant.
- Actionable insightsA report with prioritized remediation steps your engineers can act on.
- Fast turnaroundComprehensive results without long waits, so you can act quickly.
- Testers you can talk toKickoff, status updates and a post-assessment review, with testers on hand to clarify findings.
- Results on our platformTrack status, manage remediation and see analytics on findings in one place.
- Fixed scope, fixed priceOne clear quote upfront. No change orders mid-test.
How a mobile app pentest runs.
Scope, test, report, retest: agreed with your team before we start.
Scope
- Scope and attack surface mappingWe map the app on each platform: screens, flows, permissions, SDKs, deep links and the backend services it calls.
- Discovery and reconnaissanceWe analyze the binary and its traffic to understand what the app stores, sends and trusts.
Test
- Automated and manual testingAutomated analysis, then manual testing of local storage, authentication, network communication and platform-specific controls.
- Exploitation and attack simulationWe tamper with the running app and its traffic to prove real impact: bypassed controls, exposed data, abused flows.
- Post-exploitation and risk analysisWe follow each weakness into the backend and other users' data, and rank it by real risk.
Report
- Reporting and remediation guidanceFindings ranked by risk, with clear, prioritized remediation steps your engineers can act on.
Fix and keep going
- RetestingOnce fixes are in, we retest to confirm each finding is closed.
- PT as a ServiceFor ongoing protection, continuous penetration testing through our PTaaS program.
iOS or Android?
Android
Intents, root detection, the keystore and Android-specific storage and permissions.
Native Kotlin and Java, or cross-platform builds.
Most teams test both. We tailor the methodology to each platform's risk profile, including React Native, Flutter and Ionic apps.
What mobile application penetration testing does for your business.
- Protect your usersKeep personal and payment data safe on the device and in transit.
- Protect your brand and ratingsFix the flaws before they become incidents and one-star reviews.
- Secure the backend tooThe APIs behind your app tested as part of the same engagement.
- Know your SDK riskThird-party SDKs assessed for what they collect and expose.
- Meet compliance requirementsEvidence for PCI DSS, SOC 2, ISO 27001 and customer reviews.
Why teams choose GRSee for mobile application penetration testing.
We met our compliance requirements in less time, with a higher quality result.Jonathan Jaffe, CISO, Lemonade
- End-to-end coverageClient side, server side and the APIs between them, in one engagement.
- Platform-specific methodologyiOS and Android each tested against their own risks, using OWASP MASVS and MASTG.
- Root causes, not symptomsWe help your team understand each issue so fixes stick.
Related services
Working with GRSee felt like working with an extension of our own team.Tomer Cohavi, VP Engineering, Snappy
Mobile app pentest guides from our team.
- Application Penetration Testing: Types and Essential StepsShay Aberbach, Aug 12, 2025Read the guide
- Penetration Testing Steps From Pre-Engagement to ReportingTom Rozen, Aug 8, 2025Read the guide
- Types of Penetration Testing and Their Applications in CybersecurityTom Rozen, Aug 7, 2025Read the guide
Mobile app pentest questions, answered.
Still not sure? Bring your questions to a scoping call.
What is mobile application penetration testing?
It simulates real-world attacks on your iOS and Android apps to find vulnerabilities in the app binary, runtime behavior, local storage, network traffic and backend APIs, tested against OWASP MASVS and MASTG.
Do you test both iOS and Android apps?
Yes: native (Swift, Objective-C, Kotlin, Java), cross-platform (React Native, Flutter, Ionic) and hybrid apps, with the methodology tailored to each platform's risks.
What is included in mobile app API testing?
Authentication and session flaws, authorization issues (BOLA, IDOR), input validation, business logic abuse, rate limiting and server-side enforcement of mobile controls such as certificate pinning and device attestation.
How is mobile testing different from web application testing?
It covers everything a web test does, plus mobile-only risks: insecure local storage, reverse engineering of the binary, runtime tampering and hooking, deep-link and IPC abuse, and platform permission misuse.
Do you test business logic in mobile flows?
Yes. We abuse workflows, bypass controls and chain vulnerabilities across the app and backend, the issues automated tools typically miss.
How often should penetration tests be conducted?
At least annually, and after major system updates, infrastructure changes or security incidents. High-risk industries may need more frequent testing.
Will testing disrupt our operations?
Testing is planned to minimize disruption. We coordinate timing, use controlled methods, and can test staging or development environments instead of production if you prefer.
Do you retest after we fix the findings?
Yes. We retest to verify that vulnerabilities have been properly remediated before findings are closed.
Book your scoping call.
Pick a time that suits you. You leave with a scope and a fixed quote.
- Testers you can talk to
- A retest after you fix
- Results on our platform
Local teams, your time zone
- United States
- Europe
- Middle East
We work in your time zone and support you in multiple languages.
We feel that GRSee sees the big picture and they are here with us for the long run, not just a project.Adi Ben Daya, Co-Founder and VP R&D, Remitly IL
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