Random one guys but I have has the misfortune of picking up and old legacy project for our systems queuing process and right now I am trying to piece together all the parts of it with no documentation - yes I said it NO DOCUMENTATION!
The one part I am really struggling with is this very ugly piece of javascript - I can see it's in an interval that keeps submitting a form in an interval every 400ms but it's all the insanity in the middle i am trying to work out.
(function(){
var a = function() {try{return !!window.addEventListener} catch(e) {return !1} },
b = function(b, c) {a() ? document.addEventListener("DOMContentLoaded", b, c) : document.attachEvent("onreadystatechange", b)};
b(function(){
var a = document.getElementById('cf-content');a.style.display = 'block';
setTimeout(function(){
var s,t,o,p,b,r,e,a,k,i,n,g,f, OBQXEnQ={"GMuEaNBC":+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![])+(+[])+(+[])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]))/+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(+[])+(!+[]+!![]+!![]+!![])+(+[])+(!+[]+!![]+!![]+!![])+(+[])+(!+[]+!![]+!![]+!![]+!![]+!![])+(+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]))};
g = String.fromCharCode;
o = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
e = function(s) {
s += "==".slice(2 - (s.length & 3));
var bm, r = "", r1, r2, i = 0;
for (; i < s.length;) {
bm = o.indexOf(s.charAt(i++)) << 18 | o.indexOf(s.charAt(i++)) << 12
| (r1 = o.indexOf(s.charAt(i++))) << 6 | (r2 = o.indexOf(s.charAt(i++)));
r += r1 === 64 ? g(bm >> 16 & 255)
: r2 === 64 ? g(bm >> 16 & 255, bm >> 8 & 255)
: g(bm >> 16 & 255, bm >> 8 & 255, bm & 255);
}
return r;
};
t = document.createElement('div');
t.innerHTML="<a href='/'>x</a>";
t = t.firstChild.href;r = t.match(/https?:\/\//)[0];
t = t.substr(r.length); t = t.substr(0,t.length-1);
a = document.getElementById('jschl-answer');
f = document.getElementById('challenge-form');
;OBQXEnQ.GMuEaNBC+=+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(+[])+(!+[]+!![]+!![]+!![])+(+!![])+(!+[]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![])+(+!![]))/+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![])+(!+[]+!![])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![])+(!+[]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]));OBQXEnQ.GMuEaNBC-=+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(+[])+(!+[]+!![]+!![]+!![])+(+!![])+(!+[]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]))/+((+!![]+[])+(!+[]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![])+(+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(+!![])+(+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![]));OBQXEnQ.GMuEa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nQ.GMuEaNBC+=+((!+[]+!![]+!![]+!![]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![])+(+[])+(+[])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![])+(!+[]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![]))/+((!+[]+!![]+!![]+!![]+[])+(!+[]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]+!![]+!![])+(+[])+(+[])+(!+[]+!![]+!![]+!![]+!![]+!![]+!![])+(!+[]+!![]+!![]+!![]));a.value = (+OBQXEnQ.GMuEaNBC + t.length).toFixed(10); '; 121'
f.action += location.hash;
f.submit();
}, 4000);
}, false);
})();
Here is the markup
<form id="challenge-form" action="/Queue.aspx?__cf_chl_jschl_tk__=5f04d92efb1edb011edabc24cda3a235e06eb8ba-1581158560-0-AW-KwafTO7e0NxbCGPpzLlWrAU7w5hIso3jE7mgZFhCOvFb1g3xqglnwGhj6WL-2y_ECUZbobHbvPBykf59dve4xLS5aozksjkZkH12e8LOF1svbylQRNURkKmiILeAOhzeKXmzSH4ipu1OhgrKsjNfLgvcXIWz4a24GCSxxjNZKnLmsKLI3pPcN6SxeZASqynHvvZVf1n6Xa297FqIEu2a44P0_ztTkpIJodgatQyaXHrI4zYudSNdD_OGEmgCpyhuyHLjx8un4ILE2lcKwecKmWx2UZlzttaeQgsqJP3vd" method="POST" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="r" value="10a1cf729542cb5335935dbd86df47dfd6e6c413-1581158560-0-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"></input>
<input type="hidden" name="jschl_vc" value="d308f58453fdc399f02de1819459f64d"/>
<input type="hidden" name="pass" value="1581158564.634-jWe4nK3hOC"/>
<input type="hidden" id="jschl-answer" name="jschl_answer"/>
