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Javascript Unobfuscator

Tool/Unobfuscator to unobfuscate a JS script. Javascript snippets or lines codes can be minified or obfuscated in order to reduce their size or to protect them.

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Javascript Unobfuscator -

Tag(s) : Programming Language

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Javascript Unobfuscator

Javascript Deobfuscator Decoder



See also: URL DecoderBrainfuck

Tool/Unobfuscator to unobfuscate a JS script. Javascript snippets or lines codes can be minified or obfuscated in order to reduce their size or to protect them.

Answers to Questions

What is Javascript obfuscation?

Obfuscation is to turn JS native syntax into a human unreadable code (or very difficult to understand). This work is done by Javascript Obfuscators. This is a way to protect the code so that it is difficult to make reverse engineering. It's also a game to write source code with unreadable and unnatural syntax.

The techniques use ASCII codes (to replace characters with letters), changing names of variables by short non-defined names, overcoding such as base64, and so on.

What is Javascript Deobfuscation?

The disobfuscation JS is the inverse of the obfuscation. The goal is to rewrite / decode / deobfuscate / decrypt javascript obfuscated code to retrieve native JS. Tools are called unobfuscator or deobfuscator.

How to decrypt JS coded with PACKER?

Go to here (link) website

Copy paste this in the address bar:javascript:for (i=0;i < document.forms.length;++i) {for(j=0;j < document.forms[i].elements.length;++j){document.forms[i].elements[j].removeAttribute("readonly"); document.forms[i].elements[j].removeAttribute("disabled");}}

Paste the obfuscated code in the lower textarea and click Decode to get something like:

Example: var ..... = ......;
eval(......);

Replace the eval with a document.write

Execute javascript with a JavaScript editor.

What is Javascript minification?

JS minification is similar to obfuscation but for reasons of size and bandwidth saving. The principle is to reduce the size of the code, even if it makes it unreadable.

Source code

dCode retains ownership of the online 'Javascript Unobfuscator' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Javascript Unobfuscator download for offline use on PC, tablet, iPhone or Android !

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Questions / Comments

Thanks to your feedback and relevant comments, dCode has developped the best Javascript Unobfuscator tool, so feel free to write! Thank you !


Source : https://www.dcode.fr/javascript-unobfuscator
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