I am trying to reverse engineer a website which has a function for decoding an encoded string. The function gets called in one of the inlined scripts:  <script type='text/javascript'>     var str = dec("BHUJLOUBHUNK"); </scri...

So I'm decrypting a javascript code, and after long time of looking on the internet I have no clue on how to decrypt this a quick way.  The code starts off with a large Array containing all strings of the entire script.   var _$_21e2 = ["jQue...

Here is one example:  eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--){d[e(c)]=k[c]||e(c)}k=[function(e){retur...

I am trying to edit a Greasemonkey/jQuery script. I can't post the link here. The code is obfuscated and compressed with minify. It starts like this:  var _0x21e9 = ["\x67\x65\x74\x4D\x6F\x6E\x74\x68", "\x67\x65\x74\x55\x54\x43\x44\x6...

I have a piece of nasty javascript that I would like to de-obfuscate.  I know that I can spin up a VM and behold the malware in all of its glory, but I am more interested in not having it run, but viewing it in a non-obfuscated form.  If it needs to...

Can source maps help to deobfuscate the code that was previously minified with Closure/Uglifyjs?  Are there real obstacles in how source maps work, or is it not there just because nobody cared about it? I'm not quite sure if it may work in a sim...

I'm attempting to decode the following text with hexadecimal characters prefixing by "Zq".  I've tried to decode this from base 16, 32, 64 whithout success. It's an encoded instruction from a JavaScript source code.  I would like...

A friend of mine's site was being listed as malicious, and we found some obfuscated code that had been injected into his index.php without him knowing. I deobfuscated the code down two levels and found this:  (code can be viewed in the edit histo...

I have searched Google for a converter but I did not find anything. Is there any tools available or I must make one to decode my obfuscated JavaScript code ?  I presume there is such a tool but I'm not searching Google with the right keywords. Th...

I received a spam email that contained an attachment with a .js file, and out of curiosity I opened it up in notepad (didn't run it of course). Had to disable ESET temporarily as it was marking this as a trojan. I was wondering what this actually...