How to decode a JSFuck script?
let elem = yourJSFuck
function decode(elem) {
return (/\n(.+)/.exec(eval(elem.replace(/\s+/, "").slice(0, -2)))[1]);
}
console.log(decode(elem))
This should work, the source is from this page
You can use this website to decode jsfuck: http://codertab.com/jsunfuck
UPDATED I extracted the decode javascript from the URL above, this is how the decode process work: (javascript)
s = source.slice(0, source.length - 2); txtResult = eval(s);
Hope it help!
I have seen many decoding attempts around, but none that work reliably. The easiest way I have found to decode Non Alphanumeric Javascript is with Chrome.
Open Chrome > Go to jsfuck.com > paste the code you would like to decode in the window > hit Run This.
Then open the Console, in the case of your specific code from PasteBin there will be an error:
Uncaught TypeError: Cannot read property 'innerHTML' of null
To the right of the error, click the line number link, and the code will be revealed. The result is:
(function(){
window.false=document.getElementById('sc').innerHTML;
})
Which explains why you get the error trying to just decode it using JSFuck itself. There is no element with the id sc
on their site.