APEX
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NewBuilt-in decompiler and saveinstance

Security research for games.

Apex is intended for security research involving Luau VM programs. Use it only with games, programs, and accounts you own.

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Sample session. The real window is laid out a little differently.







Documented functions
163


Documented names
562


Server hops in one run
100


Instances at once
Many







Platforms
Runs on Linux and on Windows


Apex is a Linux program. On Windows it runs inside WSL, the Windows Subsystem for Linux, with its window shown on the Windows desktop.


Install guide and required libraries


    

  • Linux
    Native
    x86-64 Linux with glibc 2.34 or newer and the listed display and runtime libraries.
    • 

  • Windows
    Through WSL 2
    Install WSL with Ubuntu, add the listed libraries, and run the same file. Windows 11 or a Windows 10 build with WSLg.
    • 






Features
Everything in one place


What Apex does, and the 163 functions behind it. Pick a row to open its reference.


    

  1. 01
    Stable over long runs
    Tested across 100 server hops in one run, with execution staying stable the whole way.
    Included
    2. 

  2. 02
    Built-in decompiler
    Apex's own decompiler turns script bytecode back into readable source, with indent width and column limit you can set.
    Included
    3. 

  3. 03
    Save instance
    Our own saveinstance saves the game's objects to a file you can open in an editor, as binary or XML, with a list of roots and options for what is saved.
    Included
    4. 

  4. 04
    Many instances at once
    Run several accounts side by side. Each has its own status and its own output tab.
    Included
    5. 

  5. 05
    A real editor
    Tabs, completion, saved scripts and a console.
    Included
    6. 

  6. 06
    Simple setup
    One file to download. Sign in once with your username and license key.
    Included
    7. 



The function library


    

  1. 01
    Closures
    Create, inspect, clone and hook functions.
    15 functions
    2. 

  2. 02
    Environment
    Reach the game's and the executor's global tables, the registry and the garbage collector.
    8 functions
    3. 

  3. 03
    Metatables
    Raw metatables, read-only tables and the current namecall method.
    6 functions
    4. 

  4. 04
    Reflection
    Thread identity, hidden properties, scriptability and properties the engine does not expose.
    8 functions
    5. 

  5. 05
    Instances
    Find, fire and inspect game objects.
    12 functions
    6. 

  6. 06
    Signals
    Connections, signal hooks and server-visible event raising.
    6 functions
    7. 

  7. 07
    Scripts
    Read, run and dump the scripts a game contains.
    12 functions
    8. 

  8. 08
    Debug
    The debug library and its executor additions.
    12 functions
    9. 

  9. 09
    Filesystem
    Read and write files in the workspace folder.
    13 functions
    10. 

  10. 10
    Encoding and crypto
    Base64, hashing, encryption and compression.
    5 functions
    11. 

  11. 11
    Drawing
    Draw shapes and text on screen.
    5 functions
    12. 

  12. 12
    Network
    WebSocket and HTTP requests.
    2 functions
    13. 

  13. 13
    Input
    Keyboard and mouse events.
    1 function
    14. 

  14. 14
    Actors
    Run code inside parallel Actor states.
    3 functions
    15. 

  15. 15
    Console and output
    Print, the launcher console and output capture.
    3 functions
    16. 

  16. 16
    Miscellaneous
    Everything else.
    52 functions
    17. 






Getting started
From download to first script


    

  1. Download and open Apex
    One file. Mark it executable and start it.
    2. 

  2. Enter your username and license key
    You are asked once, on first start.
    3. 

  3. Pick a target and run
    Paste a script and press Run. Output appears in that instance's tab.
    4. 






FAQ
Questions




Does it work on Windows?
Yes, through WSL 2. See the install guide for the libraries it needs.


Can I use one license on two computers, or twice at once?
One license works on one device and runs in one Apex at a time. Apex instances you start inside that Apex all count as that one. If you sign in somewhere else, close Apex on the first device and wait up to a minute.


Does it work on Mac?
No. Apex is built for x86-64 Linux, and Windows through WSL.


Where do I find what a function does?
In the function reference. Search by any name.