README

Makes it easy to unpack JavaScript code packed by Dean Edwards packer tool. Supports all known encodings. The input script may contain multiple encoded code blocks, mixed with non-encoded code, and supports repeatedly encoded code.

Installation via Composer

composer require "backendrulz/javascript-unpacker"

Usage

echo JavaScriptUnpacker::unpack(file_get_contents('/path/to/packed.js'));

Unpack JavaScript via PHP eval(function(p,a,c,k,e,d)

$js =<<<JS
eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('0.1(\'2 3!\');',4,4,'console|log|Hello|world'.split('|'),0,{}));
JS;

echo JavaScriptUnpacker::unpack($js);
// output: console.log('Hello world!');;

Requirements

PHP >= 8.3

Testing

composer test

License

MIT