Generate Frida hook scripts using modern Frida API. Activate when the user wants to write Frida scripts, hook functions at runtime, trace calls or arguments or return values, intercept native or ObjC or Java methods, dump memory or exports, or handle native module load timing for Android and other t

rev frida Frida Script Generator Generate Frida instrumentation scripts for dynamic analysis, hooking, and runtime inspection. Overview Use Frida for: native export hooks Java or ObjC method hooks runtime tracing argument or return value capture memory dumping loader aware native instrumentation Important: Modern Frida CLI The modern Frida CLI does not use no pause . A spawned process resumes after the script is loaded. Modern API Reference Module & Symbol Lookup Interceptor NativeFunction & NativeCallback Memory Operations ObjC Java Script Generation Guidelines When generating Frida scripts: 1. Always use the modern API such as Process.getModuleByName() and mod.getExportByName() . 2. Do not use no pause . 3. Prefer load event driven native hooking over polling. 4. Print pointers and buffers in readable form. 5. Wrap risky hooks in try/catch . 6. Use hexdump() for binary inspection. Handle Native Module Load Timing Do not assume a target .so is already loaded. Preferred order: 1. Hook android dlopen ext or dlopen and install hooks when the target library loads. 2. Use an immediate Process.findModuleByName() check for already loaded modules. 3. Use polling only as a fallback. Use this helper by default: Use it like this: If the target may already be loaded, combine an immediate check with the load hook: Use polling only as a fallback: Notes: On Android, prefer android dlopen ext before dlopen . Deduplicate by module base, not only by path. onLeave of dlopen/android dlopen ext is usually the right time to install hooks after constructors have run. If Java drives native loading, also consider System.loadLibrary , Runtime.loadLibrary0 , dlsym , or RegisterNatives . Do Not Blindly Hook init Series Functions Do not tell the user to hook .init , .init array , constructors, or JNI OnLoad blindly. These are fragile points: many libraries perform one time setup there bad hooks can crash the process before the real target logic runs early hooks can change timing and hide the behavior the user wants to study constructor code often fans out into many unrelated helpers Before suggesting an init stage hook: 1. identify why early hooking is required 2. identify the exact module and exact initialization routine 3. confirm whether the target symbol or behavior only exists before normal exports are reachable 4. prefer a later stable hook if it gives the same visibility Prefer this order: 1. hook a stable exported function after module load 2. hook RegisterNatives , dlsym , or the first real business function 3. hook JNI OnLoad only if native registration or anti debug setup happens there 4. hook constructors or .init array only if there is strong evidence that the critical logic is there If proposing an early init hook, state: why the normal export hook is insufficient what exact function or address should be hooked what failure mode to expect how to verify the hook did not break initialization Bad advice: Better advice: wait for module load confirm the constructor target by symbols, xrefs, strings, or trace evidence attach only after identifying the exact initialization function explain the risk to the user before using an init stage hook Prefer Constructor Dispatchers Over Blind init Hooks If anti debug logic is suspected inside the constructor chain, prefer observing or hooking the dispatcher first instead of attaching blindly to raw .init array entries. Useful higher level targets include: call constructors call array linker side constructor walkers app side wrapper functions that iterate constructor tables Why this is safer: one hook can reveal the full constructor sequence you can see which constructor runs immediately before termination or anti debug setup it reduces blind patching of unrelated initialization code it lets you log constructor targets first and patch only the offending one later Recommended workflow: 1. hook module load 2. identify whether the process terminates during constructor execution 3. if yes, hook call constructors or call array when available 4. log each constructor target as it is dispatched 5. identify the exact constructor that performs anti debug checks 6. patch or hook that constructor, or patch the specific anti debug branch inside it Only suggest call constructors or call array when: the target platform or linker build exposes those functions symbols, traces, or disassembly indicate they are actually used the user needs visibility into constructor time anti debug behavior Warn about these constraints: these functions are loader or linker internals and names may vary by Android version, vendor build, or platform they may not be exported and may require symbol recovery or offset based attachment hooking them too early can affect every library load, so scope logging carefully use them for discovery first, not as a default permanent bypass Good guidance: “The process dies during native library initialization. First hook the constructor dispatcher such as call constructors or call array if present, log the constructor targets, then move to the exact offending constructor.” Bad guidance: “Hook every .init array entry and patch until it stops crashing.” Pointer and Buffer Logging

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