old-34 -- Javascript (Debug)
URL: https://webhacking.kr/challenge/js-7/
Upon visiting the website we get an alert:
<html>
<head>
<title>Challenge 34</title>
<script>
var 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e=a[c];if(b['clOwyu']===undefined){(function(){var f=function(){var g;try{g=Function('return\x20(function()\x20'+'{}.constructor(\x22return\x20this\x22)(\x20)'+');')();}catch(h){g=window;}return g;};var i=f();var j='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';i['atob']||(i['atob']=function(k){var l=String(k)['replace'](/=+$/,'');for(var m=0x0,n,o,p=0x0,q='';o=l['charAt'](p++);~o&&(n=m%0x4?n*0x40+o:o,m++%0x4)?q+=String['fromCharCode'](0xff&n>>(-0x2*m&0x6)):0x0){o=j['indexOf'](o);}return q;});}());var r=function(s,d){var u=[],v=0x0,w,x='',y='';s=atob(s);for(var z=0x0,A=s['length'];z<A;z++){y+='%'+('00'+s['charCodeAt'](z)['toString'](0x10))['slice'](-0x2);}s=decodeURIComponent(y);for(var B=0x0;B<0x100;B++){u[B]=B;}for(B=0x0;B<0x100;B++){v=(v+u[B]+d['charCodeAt'](B%d['length']))%0x100;w=u[B];u[B]=u[v];u[v]=w;}B=0x0;v=0x0;for(var C=0x0;C<s['length'];C++){B=(B+0x1)%0x100;v=(v+u[B])%0x100;w=u[B];u[B]=u[v];u[v]=w;x+=String['fromCharCode'](s['charCodeAt'](C)^u[(u[B]+u[v])%0x100]);}return x;};b['wxbdQn']=r;b['ZjQald']={};b['clOwyu']=!![];}var D=b['ZjQald'][c];if(D===undefined){if(b['XvSLaK']===undefined){var E=function(F){this['swkpev']=F;this['DGOTpS']=[0x1,0x0,0x0];this['zlbdZJ']=function(){return'newState';};this['KCuPKs']='\x5cw+\x20*\x5c(\x5c)\x20*{\x5cw+\x20*';this['AnZPoE']='[\x27|\x22].+[\x27|\x22];?\x20*}';};E['prototype']['DCDTIR']=function(){var G=new RegExp(this['KCuPKs']+this['AnZPoE']);var H=G['test'](this['zlbdZJ']['toString']())?--this['DGOTpS'][0x1]:--this['DGOTpS'][0x0];return this['ZjMdYn'](H);};E['prototype']['ZjMdYn']=function(I){if(!Boolean(~I)){return I;}return this['LqSTke'](this['swkpev']);};E['prototype']['LqSTke']=function(J){for(var K=0x0,L=this['DGOTpS']['length'];K<L;K++){this['DGOTpS']['push'](Math['round'](Math['random']()));L=this['DGOTpS']['length'];}return 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n=~-0x4>>0x1+0xff%0x0;if(m['\x69\x6e\x64\x65\x78\x4f\x66']((!![]+'')[0x3])!==n){i(m);}};if(!e()){if(!g()){i('\x69\x6e\x64\u0435\x78\x4f\x66');}else{i('\x69\x6e\x64\x65\x78\x4f\x66');}}else{i('\x69\x6e\x64\u0435\x78\x4f\x66');}});Q();var q=function(){var r=!![];return function(s,t){var u=r?function(){if(b('0x0','hezG')!==b('0x1','A6hd')){if(t){if(b('0x2','G(vo')===b('0x3','K*$C')){q(this,function(){var j=new RegExp(b('0x4','$VvG'));var k=new RegExp(b('0x5','2@LG'),'i');var l=H(b('0x6','k(C)'));if(!j[b('0x7','14cN')](l+'chain')||!k[b('0x8','aEot')](l+b('0x9','ln]I'))){l('0');}else{H();}})();}else{var z=t[b('0xa','$ybZ')](s,arguments);t=null;return z;}}}else{var f=r?function(){if(t){var g=t[b('0xb','C%Xw')](s,arguments);t=null;return g;}}:function(){};r=![];return f;}}:function(){};r=![];return u;};}();(function(){q(this,function(){var D=new RegExp('function\x20*\x5c(\x20*\x5c)');var E=new RegExp(b('0xc','RLUb'),'i');var F=H(b('0xd','iWKi'));if(!D[b('0xe','ho]6')](F+b('0xf','RLUb'))||!E[b('0x10','X!$R')](F+b('0x11','RUTX'))){if(b('0x12','J[i1')===b('0x13','Pa4(')){F('0');}else{(function(){return!![];}[b('0x14','kK4Z')](b('0x15','X!$R')+b('0x16','llaF'))[b('0x17','3R^0')](b('0x18','iUmC')));}}else{H();}})();}());setInterval(function(){H();},0xfa0);if(location[b('0x19','iUmC')][b('0x1a','6]r1')](0x1)==b('0x1b','RLUb'))location[b('0x1c','4c%d')]=b('0x1d','llaF');else alert(b('0x1e','14cN'));function H(I){function J(K){if(b('0x1f','oYXf')!==b('0x20','ho]6')){return J;}else{if(typeof K==='string'){return function(M){}[b('0x21','2@LG')](b('0x22','joDm'))[b('0x23','iUmC')](b('0x24','llaF'));}else{if('thtMU'===b('0x25','Am%6')){if((''+K/K)[b('0x26','RLUb')]!==0x1||K%0x14===0x0){if(b('0x27','2@LG')!==b('0x28','bO4C')){return!![];}else{(function(){return!![];}[b('0x29','RLUb')](b('0x2a','ln]I')+b('0x2b','3R^0'))['call'](b('0x2c','c3hQ')));}}else{(function(){return![];}[b('0x2d','Am%6')](b('0x2e','14cN')+b('0x2f','$ybZ'))[b('0x30','Am%6')](b('0x31','O!T!')));}}else{H();}}J(++K);}}try{if(I){return J;}else{J(0x0);}}catch(P){}}
</script>
</head>
<body bgcolor="black">Deobfuscate Javascript with https://deobfuscate.io or https://deobfuscate.relative.im
var a = ["RcOhTDV1Ew==", "McOVwqpRBg==", "c8K/w43DvcK8", "SsOrTCF1CVDCgcKLEsKc", "NsK/w4Bc", "G1TDpwk=", "AcKtwqfDlW7Dsw==", "e3kkcQJfwoNFDEU9", "QMOXDBo=", "w5bCsWlh", "eWY6bg8=", "FnbDoEvDtl1LUkB7w4Q=", "esOZTiPDsg==", "bzfCkFfCtA==", "ZmzDjHcn", "PxLCm3LDvA==", "IcKlVy9pw57DgMK3w6kmwpvCiUnDhcOKw4A=", "LMKnwqECawEeEMOZQsK7wrLCscKpSG1AwqvDvjnDpMKhOSDCqQfDmVRowo1nwpzCh8OGc1vDv3cKVR/CgMK4w7PCukbCv8O8woNHXcK7SsOmMhHDnUEJw4lsw6g=", "wrTDnltl", "UMOXHRs=", "Tz0lw48=", "O8K0w5JcwrA=", "w5DCpnx/LA==", "HsKrS8KVQw==", "dcKvfnkhUQ3DncOFIsOew5lHwr7CjcKYAsOuwrc3UjhfwopNwqwuWcOjw4PDrkIRWAfCnSIdw5jDtsKyWFBMwq4YMQvDhRrCrlBlw71LUR5HGMKwEBs=", "w4RAw5xg", "RkQSNA==", "SsOsQztv", "wonDvMOwwow=", "wovDlMKvw5nCog==", "w73Ch8K5VcK/", "wpN7HsOMwpI=", "w5/CuMKDacOKPcKoB3jDomQ=", "wpnDvMOhwo0=", "wp4xwrvDvA==", "H1LDrhc=", "wo86woHDm37Dow==", "woY4wobDmg==", "wr/CgMKQNcOo", "ecOlUSF2S3fCsMKbGQ==", "E3nCrcKe", "w5d5w6HDnsOFw7RcRFjDosKsZ8OHEcOv", "QMOXDBrCrcKLwp3DvA==", "w5fDsiPDrsOf", "V3c3A0Q=", "E8OjwpNaP1lDTMKXcsO5", "G08JPDZMw5s8w4ITw54dEMKAwps=", "wo8pwoXDnmg=", "wpo5wqvDoMOQw6Jd", "bH4+TyM="];
(function (c, d) {
var e = function (f) {
while (--f) {
c.push(c.shift());
}
};
var g = function () {
var h = {data: {key: "cookie", value: "timeout"}, setCookie: function (i, j, k, l) {
l = l || {};
var m = j + "=" + k;
var n = 0;
for (var n = 0, p = i.length; n < p; n++) {
var q = i[n];
m += "; " + q;
var r = i[q];
i.push(r);
p = i.length;
if (r !== true) {
m += "=" + r;
}
}
l.cookie = m;
}, removeCookie: function () {
return "dev";
}, getCookie: function (s, t) {
s = s || function (u) {
return u;
};
var v = s(new RegExp("(?:^|; )" + t.replace(/([.$?*|{}()[]\/+^])/g, "$1") + "=([^;]*)"));
var w = function (x, y) {
x(++y);
};
w(e, d);
return v ? decodeURIComponent(v[1]) : undefined;
}};
var z = function () {
var A = new RegExp("\\w+ *\\(\\) *{\\w+ *['|\"].+['|\"];? *}");
return A.test(h.removeCookie.toString());
};
h.updateCookie = z;
var B = "";
var C = h.updateCookie();
if (!C) {
h.setCookie(["*"], "counter", 1);
} else if (C) {
B = h.getCookie(null, "counter");
} else {
h.removeCookie();
}
};
g();
}(a, 162));
var b = function (c, d) {
c = c - 0;
var e = a[c];
if (b.clOwyu === undefined) {
(function () {
var f = function () {
var g;
try {
g = Function('return (function() {}.constructor("return this")( ));')();
} catch (h) {
g = window;
}
return g;
};
var i = f();
var j = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
i.atob || (i.atob = function (k) {
var l = String(k).replace(/=+$/, "");
for (var m = 0, n, o, p = 0, q = ""; o = l.charAt(p++); ~o && (n = m % 4 ? n * 64 + o : o, m++ % 4) ? q += String.fromCharCode(255 & n >> (-2 * m & 6)) : 0) {
o = j.indexOf(o);
}
return q;
});
}());
var r = function (s, d) {
var u = [], v = 0, w, x = "", y = "";
s = atob(s);
for (var z = 0, A = s.length; z < A; z++) {
y += "%" + ("00" + s.charCodeAt(z).toString(16)).slice(-2);
}
s = decodeURIComponent(y);
for (var B = 0; B < 256; B++) {
u[B] = B;
}
for (B = 0; B < 256; B++) {
v = (v + u[B] + d.charCodeAt(B % d.length)) % 256;
w = u[B];
u[B] = u[v];
u[v] = w;
}
B = 0;
v = 0;
for (var C = 0; C < s.length; C++) {
B = (B + 1) % 256;
v = (v + u[B]) % 256;
w = u[B];
u[B] = u[v];
u[v] = w;
x += String.fromCharCode(s.charCodeAt(C) ^ u[(u[B] + u[v]) % 256]);
}
return x;
};
b.wxbdQn = r;
b.ZjQald = {};
b.clOwyu = true;
}
var D = b.ZjQald[c];
if (D === undefined) {
if (b.XvSLaK === undefined) {
var E = function (F) {
this.swkpev = F;
this.DGOTpS = [1, 0, 0];
this.zlbdZJ = function () {
return "newState";
};
this.KCuPKs = "\\w+ *\\(\\) *{\\w+ *";
this.AnZPoE = "['|\"].+['|\"];? *}";
};
E.prototype.DCDTIR = function () {
var G = new RegExp(this.KCuPKs + this.AnZPoE);
var H = G.test(this.zlbdZJ.toString()) ? --this.DGOTpS[1] : --this.DGOTpS[0];
return this.ZjMdYn(H);
};
E.prototype.ZjMdYn = function (I) {
if (!Boolean(~I)) {
return I;
}
return this.LqSTke(this.swkpev);
};
E.prototype.LqSTke = function (J) {
for (var K = 0, L = this.DGOTpS.length; K < L; K++) {
this.DGOTpS.push(Math.round(Math.random()));
L = this.DGOTpS.length;
}
return J(this.DGOTpS[0]);
};
new E(b).DCDTIR();
b.XvSLaK = true;
}
e = b.wxbdQn(e, d);
b.ZjQald[c] = e;
} else {
e = D;
}
return e;
};
var e = function () {
var c = true;
return function (d, e) {
var f = c ? function () {
if (e) {
var g = e.apply(d, arguments);
e = null;
return g;
}
} : function () {};
c = false;
return f;
};
}();
var Q = e(this, function () {
var e = function () {
var f = new RegExp("\\w+ *\\(\\) *{\\w+ *['|\"].+['|\"];? *}");
return !f.test(c.toString());
};
var g = function () {
var h = new RegExp("(\\\\[x|u](\\w){2,4})+");
return h.test(d.toString());
};
var i = function (j) {
var k = 0;
if (j.indexOf("i" === k)) {
l(j);
}
};
var l = function (m) {
var n = 3;
if (m.indexOf("true"[3]) !== n) {
i(m);
}
};
if (!e()) {
if (!g()) {
i("indеxOf");
} else {
i("indexOf");
}
} else {
i("indеxOf");
}
});
Q();
var q = function () {
var r = true;
return function (s, t) {
var u = r ? function () {
if (b("0x0", "hezG") !== b("0x1", "A6hd")) {
if (t) {
if (b("0x2", "G(vo") === b("0x3", "K*$C")) {
q(this, function () {
var j = new RegExp(b("0x4", "$VvG"));
var k = new RegExp(b("0x5", "2@LG"), "i");
var l = H(b("0x6", "k(C)"));
if (!j[b("0x7", "14cN")](l + "chain") || !k[b("0x8", "aEot")](l + b("0x9", "ln]I"))) {
l("0");
} else {
H();
}
})();
} else {
var z = t[b("0xa", "$ybZ")](s, arguments);
t = null;
return z;
}
}
} else {
var f = r ? function () {
if (t) {
var g = t[b("0xb", "C%Xw")](s, arguments);
t = null;
return g;
}
} : function () {};
r = false;
return f;
}
} : function () {};
r = false;
return u;
};
}();
(function () {
q(this, function () {
var D = new RegExp("function *\\( *\\)");
var E = new RegExp(b("0xc", "RLUb"), "i");
var F = H(b("0xd", "iWKi"));
if (!D[b("0xe", "ho]6")](F + b("0xf", "RLUb")) || !E[b("0x10", "X!$R")](F + b("0x11", "RUTX"))) {
if (b("0x12", "J[i1") === b("0x13", "Pa4(")) {
F("0");
} else {
(function () {
return true;
}[b("0x14", "kK4Z")](b("0x15", "X!$R") + b("0x16", "llaF"))[b("0x17", "3R^0")](b("0x18", "iUmC")));
}
} else {
H();
}
})();
}());
setInterval(function () {
H();
}, 4e3);
if (location[b("0x19", "iUmC")][b("0x1a", "6]r1")](1) == b("0x1b", "RLUb")) location[b("0x1c", "4c%d")] = b("0x1d", "llaF"); else alert(b("0x1e", "14cN"));
function H(I) {
function J(K) {
if (b("0x1f", "oYXf") !== b("0x20", "ho]6")) {
return J;
} else {
if (typeof K === "string") {
return function (M) {}[b("0x21", "2@LG")](b("0x22", "joDm"))[b("0x23", "iUmC")](b("0x24", "llaF"));
} else {
if ("thtMU" === b("0x25", "Am%6")) {
if (("" + K / K)[b("0x26", "RLUb")] !== 1 || K % 20 === 0) {
if (b("0x27", "2@LG") !== b("0x28", "bO4C")) {
return true;
} else {
(function () {
return true;
}[b("0x29", "RLUb")](b("0x2a", "ln]I") + b("0x2b", "3R^0")).call(b("0x2c", "c3hQ")));
}
} else {
(function () {
return false;
}[b("0x2d", "Am%6")](b("0x2e", "14cN") + b("0x2f", "$ybZ"))[b("0x30", "Am%6")](b("0x31", "O!T!")));
}
} else {
H();
}
}
J(++K);
}
}
try {
if (I) {
return J;
} else {
J(0);
}
} catch (P) {}
}Line looks interesting as it's using alert and location
if (location[b("0x19", "iUmC")][b("0x1a", "6]r1")](1) == b("0x1b", "RLUb")) location[b("0x1c", "4c%d")] = b("0x1d", "llaF"); else alert(b("0x1e", "14cN"));> console.log(b("0x19", "iUmC"))
VM389:1 hash
> console.log(b("0x1a", "6]r1"))
VM389:2 slice
> console.log(b("0x1b", "RLUb"))
VM389:3 Passw0RRdd
> console.log(b("0x1c", "4c%d"))
VM389:4 href
> console.log(b("0x1d", "llaF"))
VM389:5 ./?Passw0RRdd=1
> console.log(b("0x1e", "14cN"))
VM389:6 debug meNavigate to webhacking.kr/challenge/js-7/?Passw0RRdd=1
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