Frida — Install, Use, Optimise (2026)

Last updated: May 18, 2026

Dynamic instrumentation toolkit for iOS, Android, Linux, Windows, macOS — hook functions, modify return values, dump memory at runtime.

Installation

Pick the install method that matches your stack. The Docker option is the cleanest for one-off scans where you don’t want to pollute your workstation.

Linux/macOS

pipx install frida-tools

Frida server (Android)

Download frida-server-XX-android-arm64 from github.com/frida/frida/releases, push to /data/local/tmp/, chmod +x, run as root

Frida server (iOS, jailbroken)

Add frida.re repo in Cydia → install Frida

Core commands

The handful of invocations you’ll actually run on 90% of engagements:

List processes

frida-ps -U

Attach to app + interactive REPL

frida -U -n com.target.app

Hook a Java method

frida -U -l hook.js com.target.app

Trace native function calls

frida-trace -U -i "open*" com.target.app

Dump app memory

frida-ps -Ua → fridump -U com.target.app

SSL pinning bypass

frida -U -l ssl-pinning-bypass.js com.target.app

Performance optimisation

What separates a junior who runs the default invocation from a practitioner who knows the knobs:

• Frida server in /data/local/tmp/ on Android needs root. For non-rooted, use objection patchapk to embed gadget into APK.
• Hook scripts: minimise console.log output during Java method tracing — adds significant overhead.
• frida-trace generates handler stubs in __handlers__/ — edit for filtered logging.
• Long-running hooks: use Interceptor.attach with onEnter/onLeave; avoid inline replaceAll which leaks memory.
• Connection: USB (-U) is fastest. -H over TCP works but adds latency.

Common pitfalls

Real failure modes that bite people on engagements. Most are recoverable; a few are reputation-damaging.

• Anti-Frida detection in serious apps: checks for frida-server process, /data/local/tmp/re.frida.server, Frida memory signatures. Bypass libraries (frida-anti-anti) lag behind detection logic.
• Frida server version MUST match frida-tools client version exactly.
• iOS App Store apps require jailbreak — for distribution-signed apps, you can’t Frida them on stock devices.
• Hook scripts that throw cause Frida to detach the process — wrap in try/catch.

Modern alternatives in 2026

The ecosystem moves fast. These are tools you should at least be aware of:

• Objection — wraps Frida with common-task automations.
• r2frida — radare2 + Frida combo.
• Xposed (Android only) — older, requires modded ROM.

India context and engagement notes

For Indian fintech mobile pen-tests: Frida bypassing SSL pinning is the day-1 task. Indian banks use Promon SHIELD / Appdome / BlueShield wrappers — you’ll spend days fighting RASP detection. Budget for it in scoping.

⚖️ Legal: Use only on systems you own or have explicit written authorisation to test. In India, unauthorised access is punishable under Section 66 of the IT Act, 2000 (up to 3 years imprisonment + fine). Pair every engagement with a signed Statement of Work or Rules of Engagement before running anything from this page.

Related engagement → How we ran a mobile + API security review for a BFSI client