ExternalFreelancerRemote$750–$1500 USD

Runtime API Hooking Instrumentation Project

Summary

Freelancer Client is hiring: Runtime API Hooking Instrumentation Project.

Location: Remote

The task at hand is to design and code a robust, highly-performant runtime function-hooking layer that lets me modify app behaviour on the fly. My main goal is modding—changing what the target application does in real time—rather than simply logging or passively analysing it.

API hooking will be the core technique; if you can complement that with DLL injection, Frida scripts, or other low-level methods, all the better, so long as the final solution stays lean, stable, and compatible across OS versions.

I’d like to see examples of similar work you’ve already shipped, hear your thoughts on a realistic timeline, and agree on a phased cost structure. Once we connect, I’ll share the technical specs, test apps and acceptance criteria in detail so you can scope the effort precisely.

Skills: C Programming, Mobile App Development, Android, Software Architecture, Instrumentation, Software Development, API, Software Engineering

Budget: $750–$1500 USD


Source: Freelancer Client via Remote / Online. Apply on the source website.

Original

The task at hand is to design and code a robust, highly-performant runtime function-hooking layer that lets me modify app behaviour on the fly. My main goal is modding—changing what the target application does in real time—rather than simply logging or passively analysing it.

Target platforms (must be fully supported):
• Windows
• Android

API hooking will be the core technique; if you can complement that with DLL injection, Frida scripts, or other low-level methods, all the better, so long as the final solution stays lean, stable, and compatible across OS versions.

I’d like to see examples of similar work you’ve already shipped, hear your thoughts on a realistic timeline, and agree on a phased cost structure. Once we connect, I’ll share the technical specs, test apps and acceptance criteria in detail so you can scope the effort precisely.

Location & Details

SourceFreelancer
Budget$750–$1500 USD
LocationRemote
Posted2026-05-18 13:45:59
C ProgrammingMobile App DevelopmentAndroidSoftware ArchitectureInstrumentationSoftware DevelopmentAPISoftware Engineering
Apply on source →

About this listing

This remote opportunity was imported from Freelancer and is shown here for discovery. To apply, follow the link to the original posting.

Skills mentioned:
C ProgrammingMobile App DevelopmentAndroidSoftware ArchitectureInstrumentationSoftware DevelopmentAPISoftware Engineering