Cyber Defense
Mobile app security testing services that stop at the login screen miss the point. The attacker owns the device your app runs on. They can unpack the binary, read what you stored, hook what you call, and rewrite what you send, and none of that touches your server until it is already trusted.
We test iOS and Android builds the way that adversary does: static analysis of the shipped package, dynamic analysis on a rooted or jailbroken device, traffic interception through your pinning, and reverse engineering of the parts you assumed nobody would read. Then we test the backend the app talks to, because that is where the data actually lives.
Most mobile findings resolve into one of three sentences: it was stored in the clear, it was sent without protection, or the server trusted the client. If your API is the larger asset, pair this with an API security assessment; if you can share the source, source code security review reaches further into the same code.
Why you need it
01 / 06Every secret compiled into your app is readable. Every check performed on the device can be bypassed. Root and jailbreak detection, certificate pinning and obfuscation raise the cost of an attack; they do not prevent one, and designing as if they do is the most common structural flaw we find.
Tokens in shared preferences, personal data in an unencrypted SQLite database, credentials in the iOS keychain with the wrong accessibility class, sensitive values in logs and screenshots. All of it survives on a device that gets lost, sold or backed up to a laptop.
Mobile clients get endpoints that were built for convenience: bulk sync, offline reconciliation, device registration. They are frequently less well guarded than anything the website touches, and they are documented only in the binary.
Store review, banking and payment requirements, and privacy law all impose obligations on what a mobile app may store and transmit. Failing them stops a release; finding it in testing costs a sprint.
Instrument
02 / 06How a scanner's output compares with what a tester confirms once the binary is open and the traffic is intercepted.
What we deliver
03 / 06The IPA or APK as your users receive it: hardcoded API keys and credentials, exported components and intent handling on Android, URL schemes and universal links on iOS, debuggable and backup flags, weak or home-made cryptography, and third-party SDKs with known issues.
Everything the app writes to the device: shared preferences, UserDefaults, keychain and keystore entries and their protection classes, SQLite and Realm databases, caches, logs, crash reports and screenshots taken when the app backgrounds.
The app running on a rooted or jailbroken device, hooked with Frida and objection: bypassing root detection and certificate pinning to see the traffic underneath, tampering with client-side checks, and observing what the app does when it is lied to.
TLS configuration and pinning implementation, what is transmitted and whether it needed to be, and then the API itself: authentication, authorisation between accounts, and the endpoints only the binary knows about.
Token storage and lifetime, refresh handling, logout and remote revocation, session behaviour across device restarts, and whether the biometric check actually gates anything or merely animates before an already-valid token is used.
Decompiling the application to read its logic, assessing obfuscation for whether it is meaningful or decorative, repackaging and re-signing to test integrity checks, and reporting exactly what a determined analyst learns from your binary.
How we run it
04 / 06Platform targets, build variants, backend environments, the roles and account types in scope, and any device or region gating. We ask for a debuggable build where one exists, and test the production build regardless.
Day 1Package inspection and decompilation with MobSF, jadx and apktool: manifest and entitlements, exported surfaces, embedded secrets, cryptographic use and bundled dependencies.
Days 2-3The app on instrumented hardware, traffic intercepted through Burp Suite after pinning is bypassed, runtime hooking with Frida, and abuse of every client-side control that guards something on the server.
Days 3-6A file-by-file review of what the app leaves on disk, keychain and keystore protection classes, backup inclusion, and what shows in logs, screenshots and crash telemetry.
Days 5-6Findings with device, OS version, build and exact reproduction steps, ranked by what they reach. Platform-specific fixes, not generic advice. The Android and iOS answers are rarely the same.
Days 7-8The corrected build is tested again on the same devices, and we confirm the fix holds under the same instrumentation rather than only in a code diff.
After your fixesKey benefits
05 / 06A concrete list of the secrets, endpoints and logic recoverable from your shipped app, and which of them actually matter once the server stops trusting the client.
Tokens, personal data and cached records either move behind proper platform protection or stop being written at all.
A dated report per platform, mapped to OWASP MASVS, answers store review questions and enterprise security questionnaires without a fresh scramble each time.
Tools we use
06 / 06No “latest tech tools”. These are the ones your report will cite, alongside the manual work that a tool cannot do for you.
Static analysis and reversing
Runtime instrumentation
Traffic
Code and dependencies
Methodology
Why Aphelion
SharedDarshap Nayak, formerly of KPMG, holds a master’s degree in cybersecurity and more than seven years in security operations. Jaimin Somani brings fifteen-plus years of academic and hands-on VAPT. Hemang Desai is an ICT network specialist from Australia. You will meet them, not a logo.
Meet the teamEvery finding arrives with the reproduction steps, the affected asset and the fix, ranked by what it actually reaches in your environment, not by a CVSS number copied from a scanner. You get the report and the raw output, not a summary of a summary.
See how we testAhmedabad and Sharjah, working the same methodology on the same tooling. Indian data-residency requirements and UAE delivery are both ordinary here, and the AphelioNYX AD Pen-Test module runs entirely inside your perimeter when regulation says it must.
The platformInvent a statistic to make a slide land. Publish your name as a client without written permission. Print an award badge nobody awarded. Founded in 2024. We say so, and we attribute experience to the people who have it.
Ask us anythingAcross the globe, and across eight industries. We name a client only with their written permission.
AphelioNYX is SOC 2, ISO and GDPR compliant; attestations are available on request under NDA. We would rather hand you the report than print a badge.
Questions
FAQNext door
RelatedA personalised walkthrough and a free readiness assessment against the frameworks you are actually being asked for. Pick a time that suits you, or write to us. We reply within one business day.