Frida Overview

Apr 22, 2026 00:00:00 Android
Apr 22, 2026 00:00:00 Android Examples
Apr 22, 2026 00:00:00 Best Practices
Apr 22, 2026 00:00:00 Bridges
Apr 22, 2026 00:00:00 Building
Apr 22, 2026 00:00:00 C API
Apr 22, 2026 00:00:00 Contributing
Apr 22, 2026 00:00:00 Footprint
Apr 22, 2026 00:00:00 frida CLI
Apr 22, 2026 00:00:00 frida-discover
Apr 22, 2026 00:00:00 frida-kill
Apr 22, 2026 00:00:00 frida-ls-devices
Apr 22, 2026 00:00:00 frida-ps
Apr 22, 2026 00:00:00 frida-trace
Apr 22, 2026 00:00:00 Functions
Apr 22, 2026 00:00:00 Gadget
Apr 22, 2026 00:00:00 Go API
Apr 22, 2026 00:00:00 GSoC Ideas 2015
Apr 22, 2026 00:00:00 GSoD Ideas 2023
Apr 22, 2026 00:00:00 gum-graft
Apr 22, 2026 00:00:00 Hacking
Apr 22, 2026 00:00:00 History
Apr 22, 2026 00:00:00 Installation
Apr 22, 2026 00:00:00 iOS
Apr 22, 2026 00:00:00 iOS Examples
Apr 22, 2026 00:00:00 JavaScript API
Apr 22, 2026 00:00:00 JavaScript Examples
Apr 22, 2026 00:00:00 Linux Examples
Apr 22, 2026 00:00:00 macOS Examples
Apr 22, 2026 00:00:00 Messages
Apr 22, 2026 00:00:00 Modes
Apr 22, 2026 00:00:00 Presentations
Apr 22, 2026 00:00:00 Quickstart
Apr 22, 2026 00:00:00 Session Initialization Primer
Apr 22, 2026 00:00:00 Stalker
Apr 22, 2026 00:00:00 Swift API
Apr 22, 2026 00:00:00 Troubleshooting
Apr 22, 2026 00:00:00 Windows Examples

Frida Documentation Overview

What is Frida?

Frida is a dynamic code instrumentation toolkit that lets you inject snippets of JavaScript or your own library into native applications at runtime.

Supported platforms: Windows, macOS, GNU/Linux, iOS, watchOS, tvOS, Android, FreeBSD, QNX
Analogy: “Greasemonkey for native apps”
Core language: C, with QuickJS injected into target processes
Scripting language: JavaScript (runs inside the target process with full memory and function access)
Host-side language: Python (primary), plus Node.js, Swift, .NET, Qml, Go, C — or any language via custom bindings
Communication: Bidirectional channel between the host app and the JS runtime inside the target

Language Bindings

Language	Repository
Python	https://github.com/frida/frida-python
Node.js	https://github.com/frida/frida-node
Swift	https://github.com/frida/frida-swift
.NET	https://github.com/frida/frida-clr
Qml	https://github.com/frida/frida-qml
Go	https://github.com/frida/frida-go

Additional bindings for other languages/environments are straightforward to build on top of the C API.

Architecture

Host process (Python/Node/etc.)
  │
  │  frida Python/language binding
  │
  ▼
Frida C core
  │
  │  injects QuickJS + Frida runtime
  │
  ▼
Target process (native app)
  └─ JavaScript executes with:
       - Full memory read/write access
       - Function hooking (interceptor)
       - Native function calls
       - Bidirectional messaging back to host

Key Use Cases

Use Case	Description
Protocol reverse engineering	Trace encrypted network APIs on iOS/Android apps where Wireshark cannot decrypt traffic
Remote diagnostics	Attach to deployed desktop apps without rebuilding — add logging via a Python script
Protocol manipulation	Build a Wireshark-like tool that can also intercept and mutate function calls
Black-box testing	Inject test logic into production binaries without modifying source code

Error Safety

Frida catches JavaScript errors and surfaces them as exceptions rather than crashing the target process. This makes iterative scripting safe.

Documentation Sections

Section	Contents
Getting Started	Installation, quickstart
Tutorials	Platform-specific guides
Examples	Windows, macOS, Linux, iOS, Android code samples
Tools	`frida`, `frida-trace`, `frida-ps`, `frida-ls-devices`, `frida-kill`, `frida-discover` CLI reference
API Reference	JavaScript API, Python API, C API, Swift API, Go API
Miscellaneous	Stalker (code coverage/tracing engine), Gadget (no-jailbreak injection), Gum, messages protocol