EC-Council Certified Ethical Hacker (CEH) v12Mobile Platform, IoT, and OT HackingMedium
An ethical hacker is tasked with identifying vulnerabilities in a custom Android application that processes sensitive financial data. They suspect that the application might be storing unencrypted user credentials or API keys directly within its local storage, violating secure coding practices. Which of the following tools or techniques would be most effective for an ethical hacker to examine the application's local data storage for such vulnerabilities on a rooted device?
- APerforming a brute-force attack against the application's login form.
- BDirectly browsing the application's data directories via a file manager or ADB shell.
- CEmploying a disassembler like IDA Pro on the APK.
- DUsing Wireshark to capture network traffic.
Show answer & explanationAnswer & explanation
Correct answer: B. Directly browsing the application's data directories via a file manager or ADB shell.
On a rooted Android device, an ethical hacker has full access to the file system. Directly browsing the application's data directories (e.g., /data/data/<package_name>) using a file manager or ADB shell allows them to inspect databases, shared preferences, and other files where unencrypted sensitive data might be stored.
Why the other options are wrong
- A. Brute-forcing the login form tests authentication strength, not local data storage practices.
- C. IDA Pro is a disassembler for static code analysis, not for examining runtime local data storage on a device.
- D. Wireshark captures network traffic, not local storage content.
Mobile App Local Storage Inspection
The process of examining an installed mobile application's private data directories on a device to identify insecure storage of sensitive information.
- Requires a rooted/jailbroken device for full access to app's data.
- Targets databases (SQLite), shared preferences, cached files.
- Identifies vulnerabilities like unencrypted credentials, API keys, PII.
Memory trick: Rooted access opens the app's 'data cabinet' for inspection.