Web Development Deobfuscation of JavaScript code

[MrPlugin]

Options for deobfuscation of JavaScript code

1. Readable view of JavaScript in the browser
Modern browsers can uncompress the code compressed to save traffic to its original state.
In Chrome (Chromium) - theF12, selectSourcesand click on the icon with curly braces{ }
In Firefox, this button is available on the "Debugger"
2. JStillery

git clone https://github.com/mindedsecurity/JStillery
cd JStillery
sudo npm install

+ the program is available as an online service from the author: https://mindedsecurity.github.io/jstillery/

3. JavaScript online deobfuscator
Service address: http://deobfuscatejavascript.com

4. JS Beautifier

sudo apt install npm
sudo npm -g install js-beautify
js-beautify -h

online service from the authors: https://beautifier.io

5. UglifyJS

sudo apt install uglifyjs

Run example: to improve the appearance of the file, the -b option is used ; the file (or several files) must be specified before the options:
uglifyjs medium.js -b
The program can also process files passed on standard input:
cat medium.js | uglifyjs -b