Mobile Application VAPT · iOS & Android

Mobile app testing that assumes the device is already compromised.

Once your app is on a phone, the attacker holds the binary, the traffic and the runtime. We decompile it, hook it live, strip its protections and follow every request back into your APIs, mapped to OWASP MASVS and MASTG throughout. iOS and Android, for product teams in Pakistan and abroad.

The app, the runtime and the backend, tested as one attack surface.

Our mobile application penetration testing follows the OWASP Mobile Application Security Verification Standard (MASVS) and its companion testing guide, MASTG. OWASP MASVS testing is tiered, so we agree the level at scoping: L1 for most consumer apps, L2 for anything that moves money or handles health data. Where tamper resistance matters, we add the MASVS-R resilience controls. Every finding cites the control it breaks and the MASTG test that exposed it, so developers and auditors read from the same map.

We pull apart the APK or IPA with static analysis, then instrument the running app with Frida and Objection to watch what it actually does. Which secrets it loads, where it writes, how far it trusts the server. Certificate pinning, root and jailbreak detection and anti-debugging are attacked, because a motivated adversary will do the same. Deep links, exported components, WebViews and inter-process communication are probed for entry points from other apps.

Banks, wallets and payment apps in Pakistan test regularly because State Bank of Pakistan expectations on technology governance and cybersecurity call for independent testing of customer-facing apps. The same engagement serves product teams shipping for overseas clients who ask for a current pentest report before go-live. Everything runs remotely, under NDA from the first conversation, on test devices we supply, and ends with a report your developers can work from without a translator.

What we test in your mobile app.

Android Penetration Testing

APK decompiled, rebuilt and instrumented on rooted devices and emulators. We go after what Android exposes and developers forget: exported activities, content providers, broadcast receivers and the WebViews behind them.

  • Decompilation & manifest review
  • Exported components, intents & content providers
  • WebView & deep link handling

iOS Penetration Testing

IPA analysis on jailbroken devices with Frida, across Objective-C and Swift runtimes. Keychain usage, file protection classes, URL schemes and Universal Links get the same scrutiny as the login screen.

  • Keychain, NSUserDefaults & data protection classes
  • URL schemes, Universal Links & app extensions
  • Runtime hooking across Objective-C & Swift

Backend API Testing

The app is a client; the money and data sit behind the API. Every endpoint the app calls is enumerated from traffic and code, then tested for authorisation, rate-limit and logic flaws with the OWASP API Security Top 10 as the baseline.

  • Object-level authorisation (BOLA/IDOR)
  • Token issuance, refresh & revocation
  • Replay, tampering & rate-limit abuse

Reverse Engineering & Tamper Resistance

Obfuscation, anti-debugging, integrity checks and hooking detection are attacked with the same tooling adversaries use, so you learn what a determined reverse engineer sees and how quickly.

  • Obfuscation & string-encryption review
  • Repackaging & runtime hooking resistance (MASVS-R)
  • Hard-coded keys, secrets & endpoints

Data Storage & Privacy

Where the app puts things when nobody is watching: local databases, caches, logs, backups, screenshots, clipboard and third-party SDKs.

  • Unencrypted SQLite, Realm & shared preferences
  • Logs, crash reports & keyboard caches
  • SDK data flows & permission over-reach

Authentication, Biometrics & Session

Biometric prompts that can be skipped, PINs checked on the device, sessions that never expire. We test whether the login is enforced by the server or merely drawn on the screen.

  • Biometric bypass via runtime patching
  • PIN, OTP & device-binding logic
  • Session lifetime, logout & token storage

Retest & Release Sign-Off

Fixes verified against the original PoCs, an attestation letter for your client or regulator, and a release candidate checked before it ships.

  • One retest of reported findings included
  • Attestation letter on a clean retest
  • Delta check on the release candidate

Compliance Mapping

Findings are mapped to MASVS controls and to the frameworks your auditors ask about, so one engagement feeds several questionnaires. For banks and wallets, the summary is written with regulator-facing reviews in mind.

  • MASVS L1/L2 & R control coverage
  • ISO 27001, SOC 2 & HIPAA evidence
  • Regulator-facing summary for banks & fintechs

How an engagement runs.

  1. / 01

    Scoping & MASVS Level

    We agree platforms, build types, MASVS level (L1, L2, R), backend scope and test accounts. Everything happens under NDA, and the Rules of Engagement fix the boundaries, the devices we may use and the emergency contact path.

  2. / 02

    Static Analysis & Recon

    Binaries are decompiled and mapped: permissions, exported surfaces, third-party SDKs, hard-coded secrets, endpoints and the cryptography in use. The attack plan is shaped here, before a single request is sent.

  3. / 03

    Dynamic Testing & Instrumentation

    On rooted and jailbroken devices we hook the live process, intercept traffic and manipulate the runtime to reach states the UI never allows.

  4. / 04

    Backend & Business Logic Attacks

    Every endpoint the app touches is tested from every account, role and device we hold: authorisation gaps, transaction tampering, replay, rate limits and the logic flaws no automated tool can model. A confirmed critical triggers an immediate call to your emergency contact.

  5. / 05

    Report, Debrief & Retest

    Executive summary for leadership, technical report with reproducible PoCs and MASVS mapping for engineers, a private debrief, then a retest once fixes land and an attestation letter on a clean retest.

Why teams choose Zencryptix.

  1. / 01

    Researchers first, consultants second

    58 companies, including Uber, Sony and Ford, have publicly acknowledged our founders' vulnerability disclosures. Your mobile engagement gets the same instinct for the bug that turns into an incident, backed by OSCP- and eWPTX-certified testers.

  2. / 02

    Protections rated by effort, not presence

    Pinning, root detection and obfuscation are attacked as a matter of routine, and each one is rated by how long it held. What you get back is which technique defeated it, or failed to, and what would make it hold longer.

  3. / 03

    Backend in scope by default

    Most critical mobile findings are server-side. We do not quote a mobile test that stops at the binary. The APIs the app calls are tested across accounts, roles and devices in the same engagement, and the report treats app and backend as one system.

Common questions.

No. Most mobile application penetration testing is grey box: we work from a release or staging build plus test accounts. If you can share source, we use it to go deeper and faster, especially on cryptography and business logic, and the report points at files and functions rather than decompiled offsets. Black box is also possible where a client or regulator asks for it.
For Android, a release or debuggable APK/AAB pointed at a staging environment. For iOS, an IPA or a TestFlight invite; we handle the jailbroken devices and re-signing ourselves. Send the build with its protections switched on, exactly as you would ship it: assessing them is part of the engagement.
A single app on both platforms with its backend API typically runs two to four weeks end to end, including the debrief. Super-apps, multiple apps or full MASVS-R resilience testing can extend that to six. Effort is set by the number of platforms, the MASVS level and the size of the API surface, and the quote reflects that. You receive it, with a schedule, within 48 hours of scoping.
Yes, and we recommend you never scope them out. The app is only a client; authorisation and transaction logic live on the server. Endpoints are enumerated from traffic and code and tested against the OWASP API Security Top 10, cross-account and cross-device. That includes the calls the current app version no longer makes but the server still answers.
Yes. Pinning, root and jailbreak detection, anti-debugging and hooking checks are attacked with runtime instrumentation or binary patching as a routine step. The report records the technique used against each control and how to raise the bar, so your developers know where the next version should invest.
One retest of reported findings is included in a standard engagement, scheduled once your team confirms fixes have landed. Each finding is re-verified against its original proof of concept, and on a clean retest we issue an attestation letter for your client or regulator.
The report maps to OWASP MASVS. Banks and fintechs can file it alongside their State Bank of Pakistan technology governance evidence; product teams can pass it to overseas clients asking for a current pentest report. It supports compliance; it is not a certificate in itself.

Send us the build. We'll send back what an attacker would find.

Tell us the platforms, the build type and what the app does. You'll hear from us within 24 hours and have a detailed quote within 48 hours of scoping.

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