Parasite - Injecting Some Fun into DLL Manipulation

Tired of boring dll injection tools? 🦠 Meet Parasite, a Nim-based library designed to make process manipulation exciting! 🚀 Combining the power of Winim & Jester with a user-friendly interface built on HTMX and Bulma CSS, Parasite injects fun into even the most mundane hacking tasks.

Parasite Highlights

• Inject Delight: Run code on DLL load (DllMain), optionally creating a separate thread and simulating necessary exports to satisfy the loader.
• Temporarily Disabling Loader Lock for Thread Creation: To avoid potential deadlocks when interacting with WinAPI functions like CreateThread and WaitForSingleObject, the LoaderLock is temporarily disabled during thread creation. This ensures seamless execution of these system calls without introducing synchronization conflicts.
• Remote Control: Spin up an HTTP server within the injected process, enabling remote control and communication (perfect for targets like lsass.exe).
• Process Playtime: Dynamically load/unload dlls in running processes for on-the-fly modifications.
• Memory Snapshot: Capture a full snapshot of the target's memory using dbghelp.dll's MiniDumpWriteDump.
• Process Migration: Hop between processes with classic DLL injection techniques (using WriteProcessMemory, CreateRemoteThread, and LoadLibrary).
• Command Execution: Execute shell commands within the context of your injected process for stealthy control.
• Modularity & Speed: Parasite's design encourages easy extensibility - build standalone executables (injectors, dumpers) with ease! And it's lightning-fast!⚡️

Getting Started

Tested under:

• Windows 10 x64 19042
• Nim Compiler v.2.0.0

Dependencies:

(Manage via nimble install)

• Winim = 3.9.3
• Jester = 0.6.0
• Nimja = 0.8.7
• psutil = 0.6.1

Building Parasite:

Precompiled x64 binaries are available for download in the releases section of this repo - no setup required, just start pwning!

Manual Build:

nimble build

or

nim c --app=lib --nomain -d:dumper -d:release --passL:-s -o:parasite-x64.dll src\parasite.nim
nim c --app=lib --nomain -d:dumper -d:fakeexports -d:release --passL:-s -o:dbghelp.dll parasite.nim

For a DLL with fake exports use -d:fakeexports after you adjust src\fakeexports.nim with the required exports.

x86 Support:

You can use 32-bit version of Nim to compile parasite to x86 arch. Alternatively, you can cross-compile on x64:

1. Ensure mingw-32 is in your path variable.
2. Compile with the following flags:

nim --cpu:i386 -d:release c src\parasite.nim

Known Limitations

• This project has been flagged as potentially malicious by certain antivirus vendors. This is likely because it has previously been weaponized and submitted to VT.
• The WMI module is still under development

Tools

This project includes additional tools for testing its functionalities independently of DLL hijacking techniques.

Tool	Description
dumper.exe	Dumps process memory using the MiniDumpWriteDump function.
injector.exe	Injects a DLL of your choice into a specified process via classic DLL injection.
parahttp.exe	Allow for testing web application features independently of any DLL injections

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This project draws inspiration from:

• The amazing OffensiveNim repository.
• The Loader Lock unlocking technique is heavily inspired by the work of @ElliotKillick, particularly his LdrLockLiberator repository.