javascript-obfuscator

#JavaScript obfuscator for Node.js

JavaScript obfuscator for Node.js and free alternative of js-obfuscator (which uses javascriptobfuscator.com) without any limits and sending data on server. Compatible with ES6. Tested on Angular2 bundle. https://gist.github.com/sanex3339/ffc2876123b52e6d11ce45369fd53acf

###Installation

Install the package with NPM and add it to your devDependencies:

npm install --save-dev javascript-obfuscator

###Usage:

var JavaScriptObfuscator = require('javascript-obfuscator');

var obfuscatedCode = JavaScriptObfuscator.obfuscate(
    `
    (function(){
        var variable = 'abc';
        console.log(variable);
    })();
    `,
    {
        rotateUnicodeArray: false
    }
);

console.log(obfuscatedCode);
/*
var _0x8741 = [
    '\u0061\u0062\u0063',
    '\u006c\u006f\u0067'
];
(function () {
    var _0x45e59c = _0x8741[0];
    console[_0x8741[1]](_0x45e59c);
}());
*/

obfuscate(sourceCode, options)

###sourceCode Type: string Default: null

Any valid SourceCode

###options Type: Object Default: null

Options for JavaScript obfuscator:

{
    rotateUnicodeArray: true
    // ...
}

###Available options ####compact Type: boolean Default: true

Compact code output in one line.

####debugProtection Type: boolean Default: false

#####This option can cause browser freeze while Developer Tools is enabled! Use at own risk.

Force enable debug mode in some browsers (mainly based on WebKit) on page load, if Developers Tools panel is enbaled. With this options using of Debug panel is impossible.

WebKit based browsers: blocking site window, but you still can navigate through Developers Tools panel. Firefox: not blocking site window, but you still can't use Debug panel.

####debugProtectionInterval Type: boolean Default: false

#####This option can cause browser freeze even while Developer Tools is disabled! Use at own risk.

Works if debugProtection is enabled.

Force enable debug mode in some browsers (mainly based on WebKit) when Developers Tools panel was enbaled, even after page was loaded.

####disableConsoleOutput Type: boolean Default: true

Disable console.log, console.info, console.error and console.warn messages output into browser console.

####encodeUnicodeArray Type: boolean Default: false

#####unicodeArray option must be be enabled

This option can slightly slowdown your code speed.

All strings in unicode array becomes encoded in Base64. To decode strings, special function will inserted on page under unicodeArray node.

####reservedNames Type: string[] Default: []

Disable obfuscation of given variable names, function names and names of function parameters.

####rotateUnicodeArray Type: boolean Default: true

#####unicodeArray option must be be enabled

For more hard understanding of code, during each obfuscation all literal values are stored in array as Unicode codes sequence. This options will rotate all values inside array on a random value during obfuscation of code, and insert inside source code helper function which will rotate array values back to their original indexes.

This option affected only on visual code organisation, because we can easily get original array during debug process.

Not recommended for small source code, because helper function will attract attention.

####unicodeArray Type: boolean Default: true

Put all literal strings into array and replace every literal string by array call.

####wrapUnicodeArrayCalls Type: boolean Default: true

#####unicodeArray option must be be enabled

Instead using direct calls to unicodeArray items var t = _0x43a123[0x0], when index 0x0 can be easy reverted to 0 with few js beautifiers, this option wrap all calls to special function instead.

var t = _0x12a634('0x0')