old-34 (400)
Last updated
Last updated
첫 화면이다.
페이지 소스는 아래와 같다.
<html>
<head>
<title>Challenge 34</title>
<script>
var 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</script>
</head>
<body bgcolor="black">스크립트를 Javascript Beautifier을 통해 정리하면 아래와 같다.
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='];
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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 = 0x0;
for (var n = 0x0, p = i['length']; n < p; n++) {
var q = i[n];
m += ';\x20' + q;
var r = i[q];
i['push'](r);
p = i['length'];
if (r !== !![]) {
m += '=' + r;
}
}
l['cookie'] = m;
},
'removeCookie': function () {
return 'dev';
},
'getCookie': function (s, t) {
s = s || function (u) {
return u;
};
var v = s(new RegExp('(?:^|;\x20)' + t['replace'](/([.$?*|{}()[]\/+^])/g, '$1') + '=([^;]*)'));
var w = function (x, y) {
x(++y);
};
w(e, d);
return v ? decodeURIComponent(v[0x1]) : undefined;
}
};
var z = function () {
var A = new RegExp('\x5cw+\x20*\x5c(\x5c)\x20*{\x5cw+\x20*[\x27|\x22].+[\x27|\x22];?\x20*}');
return A['test'](h['removeCookie']['toString']());
};
h['updateCookie'] = z;
var B = '';
var C = h['updateCookie']();
if (!C) {
h['setCookie'](['*'], 'counter', 0x1);
} else if (C) {
B = h['getCookie'](null, 'counter');
} else {
h['removeCookie']();
}
};
g();
}(a, 0xa2));
var b = function (c, d) {
c = c - 0x0;
var e = a[c];
if (b['clOwyu'] === undefined) {
(function () {
var f = function () {
var g;
try {
g = Function('return\x20(function()\x20' + '{}.constructor(\x22return\x20this\x22)(\x20)' + ');')();
} catch (h) {
g = window;
}
return g;
};
var i = f();
var j = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
i['atob'] || (i['atob'] = function (k) {
var l = String(k)['replace'](/=+$/, '');
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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 J(this['DGOTpS'][0x0]);
};
new E(b)['DCDTIR']();
b['XvSLaK'] = !![];
}
e = b['wxbdQn'](e, d);
b['ZjQald'][c] = e;
} else {
e = D;
}
return e;
};
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var c = !![];
return function (d, e) {
var f = c ? function () {
if (e) {
var g = e['apply'](d, arguments);
e = null;
return g;
}
} : function () { };
c = ![];
return f;
};
}();
var Q = e(this, function () {
var c = function () {
return '\x64\x65\x76';
},
d = function () {
return '\x77\x69\x6e\x64\x6f\x77';
};
var e = function () {
var f = new RegExp('\x5c\x77\x2b\x20\x2a\x5c\x28\x5c\x29\x20\x2a\x7b\x5c\x77\x2b\x20\x2a\x5b\x27\x7c\x22\x5d\x2e\x2b\x5b\x27\x7c\x22\x5d\x3b\x3f\x20\x2a\x7d');
return !f['\x74\x65\x73\x74'](c['\x74\x6f\x53\x74\x72\x69\x6e\x67']());
};
var g = function () {
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return h['\x74\x65\x73\x74'](d['\x74\x6f\x53\x74\x72\x69\x6e\x67']());
};
var i = function (j) {
var k = ~-0x1 >> 0x1 + 0xff % 0x0;
if (j['\x69\x6e\x64\x65\x78\x4f\x66']('\x69' === k)) {
l(j);
}
};
var l = function (m) {
var 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');
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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) { }
}위 코드에서 아래 부분에 주목하였다.
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'));alert(b('0x1e', '14cN')); 을 개발자도구 콘솔에 입력하니 아래와 같이 알림 창이 떴다.
if문 안의 값들을 확인하면 아래와 같다.
https://webhacking.kr/challenge/js-7/?Passw0RRdd=1 에 접속하면 문제가 풀린다.
