aradzu10/webassdecoders

Graduation's project. Hide JavaScript code from clients.

WASM - Collection of run-time Decoders

Matan Dombelski's and Arad Zulti's Graduation project

Project's Goals

We would like to enable websites to hide their Javasctipt code, and we are doing so by sending Decoders.
Decoder is a method to hide code by creating it at run-time.

Phases

Each of the following is a standalone decoder:

Project	Description
Phase 1	Poc - running Js code from Wasm
Phase 3	Encryption, using substitution cipher, at preprocessing, decryption at run-time
Phase 4	Encryption, using AES cipher, at preprocessing, decryption at run-time
Phase 5	Read the code from text file
Phase 6	Create a Lookup Tabel of chars
Phase 7	Create a Lookup Tabel of chars, and saving it dynamically
Phase 8	Create a Lookup Tabel of stings
Phase 9	Create the code by a web library
Phase 10	Steganography. Hide the code inside an image
Phase 11	Hide the code inside classes, and build it using virtual functions
Phase 12	Hide the encrypted code inside an image
Phase 13	Combination of P.9, P.11
Phase 14	Run the code only when the user move his mouse to certain location
Phase 15	Like P.14, with advance to how we run the code
Phase 16	Combination of P.13, P.15

Project structure

Every phase has tree folders:

Folder	Purpose
src	Source files
build	Bat build script
code	where we saved the code we wanted to hide

Build instrsuctions (on Windows)

Prerequisites

• Emscripten - we assume it stand next to repository folder
  |-- WebAssDecoder
  |-- emsdk-master

How to build and run

Using bat file

• Go to build folder and run build_and_run.bat
  first arg: files to compile root folder, second arg: output location (assume: build/main.js)
• The script run server. Navigate to: http://localhost:8080/PhaseX.html (Replace X with the Phase)
  We created a simple html to each phase.

Using VS code

• Open main file
• In the toolbar. Terminal -> Run Task... -> Wasm Build
• The script run server. Navigate to: http://localhost:8080/PhaseX.html (Replace X with the Phase)
  We created a simple html to each phase.