acw_sc__v2的算法破解之路
2021/5/11 20:25:32
本文主要是介绍acw_sc__v2的算法破解之路，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！
前言
- 本文仅供学习参考，如有侵权，请私信删除
- 由于版权问题，本文所展示的代码并非完整代码，也不提供相关工具，关键参数只提供思路。
提示
- 不知道该加密算法源自何处，但发现有不少网站均使用了该加密算法
- 该算法为固定算法，计算过程为固定不变的，将动态变量“arg1”代入算法中即可得到结果（也就是acw_sc__v2的Cookie值）
过程
- 案例源码（为方便看清，已做格式化处理）
<html><script>
var arg1 = 'ADA924E58A5ECA50A88727FA8C899B4F4D05CB26';
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};
this['\x66\x69\x72\x73\x74\x53\x74\x61\x74\x65'] = '\x5c\x77\x2b\x20\x2a\x5c\x28\x5c\x29\x20\x2a\x7b\x5c\x77\x2b\x20\x2a';
this['\x73\x65\x63\x6f\x6e\x64\x53\x74\x61\x74\x65'] = '\x5b\x27\x7c\x22\x5d\x2e\x2b\x5b\x27\x7c\x22\x5d\x3b\x3f\x20\x2a\x7d';
};
_0x5f325c['\x70\x72\x6f\x74\x6f\x74\x79\x70\x65']['\x63\x68\x65\x63\x6b\x53\x74\x61\x74\x65'] = function () {
var _0x19f809 = new RegExp(this['\x66\x69\x72\x73\x74\x53\x74\x61\x74\x65'] + this['\x73\x65\x63\x6f\x6e\x64\x53\x74\x61\x74\x65']);
return this['\x72\x75\x6e\x53\x74\x61\x74\x65'](_0x19f809['\x74\x65\x73\x74'](this['\x6e\x65\x77\x53\x74\x61\x74\x65']['\x74\x6f\x53\x74\x72\x69\x6e\x67']()) ? --this['\x73\x74\x61\x74\x65\x73'][0x1] : --this['\x73\x74\x61\x74\x65\x73'][0x0]);
};
_0x5f325c['\x70\x72\x6f\x74\x6f\x74\x79\x70\x65']['\x72\x75\x6e\x53\x74\x61\x74\x65'] = function (_0x4380bd) {
if (!Boolean(~_0x4380bd)) {
return _0x4380bd;
}
return this['\x67\x65\x74\x53\x74\x61\x74\x65'](this['\x72\x63\x34\x42\x79\x74\x65\x73']);
};
_0x5f325c['\x70\x72\x6f\x74\x6f\x74\x79\x70\x65']['\x67\x65\x74\x53\x74\x61\x74\x65'] = function (_0x58d85e) {
for (var _0x1c9f5b = 0x0, _0x1ce9e0 = this['\x73\x74\x61\x74\x65\x73']['\x6c\x65\x6e\x67\x74\x68']; _0x1c9f5b < _0x1ce9e0; _0x1c9f5b++) {
this['\x73\x74\x61\x74\x65\x73']['\x70\x75\x73\x68'](Math['\x72\x6f\x75\x6e\x64'](Math['\x72\x61\x6e\x64\x6f\x6d']()));
_0x1ce9e0 = this['\x73\x74\x61\x74\x65\x73']['\x6c\x65\x6e\x67\x74\x68'];
}
return _0x58d85e(this['\x73\x74\x61\x74\x65\x73'][0x0]);
};
new _0x5f325c(_0x55f3)['\x63\x68\x65\x63\x6b\x53\x74\x61\x74\x65']();
_0x55f3['\x6f\x6e\x63\x65'] = !![];
}
_0x48181e = _0x55f3['\x72\x63\x34'](_0x48181e, _0x1742fd);
_0x55f3['\x64\x61\x74\x61'][_0x4c97f0] = _0x48181e;
} else {
_0x48181e = _0x55f3['\x64\x61\x74\x61'][_0x4c97f0];
}
return _0x48181e;
};
var arg3 = null;
var arg4 = null;
var arg5 = null;
var arg6 = null;
var arg7 = null;
var arg8 = null;
var arg9 = null;
var arg10 = null;
var l = function () {
while (window[_0x55f3('0x1', '\x58\x4d\x57\x5e')] || window['\x5f\x5f\x70\x68\x61\x6e\x74\x6f\x6d\x61\x73']) {};
var _0x5e8b26 = _0x55f3('0x3', '\x6a\x53\x31\x59');
String[_0x55f3('0x5', '\x6e\x5d\x66\x52')][_0x55f3('0x6', '\x50\x67\x35\x34')] = function (_0x4e08d8) {
var _0x5a5d3b = '';
for (var _0xe89588 = 0x0; _0xe89588 < this[_0x55f3('0x8', '\x29\x68\x52\x63')] && _0xe89588 < _0x4e08d8[_0x55f3('0xa', '\x6a\x45\x26\x5e')]; _0xe89588 += 0x2) {
var _0x401af1 = parseInt(this[_0x55f3('0xb', '\x56\x32\x4b\x45')](_0xe89588, _0xe89588 + 0x2), 0x10);
var _0x105f59 = parseInt(_0x4e08d8[_0x55f3('0xd', '\x58\x4d\x57\x5e')](_0xe89588, _0xe89588 + 0x2), 0x10);
var _0x189e2c = (_0x401af1 ^ _0x105f59)[_0x55f3('0xf', '\x57\x31\x46\x45')](0x10);
if (_0x189e2c[_0x55f3('0x11', '\x4d\x47\x72\x76')] == 0x1) {
_0x189e2c = '\x30' + _0x189e2c;
}
_0x5a5d3b += _0x189e2c;
}
return _0x5a5d3b;
};
String['\x70\x72\x6f\x74\x6f\x74\x79\x70\x65'][_0x55f3('0x14', '\x5a\x2a\x44\x4d')] = function () {
var _0x4b082b = [0xf, 0x23, 0x1d, 0x18, 0x21, 0x10, 0x1, 0x26, 0xa, 0x9, 0x13, 0x1f, 0x28, 0x1b, 0x16, 0x17, 0x19, 0xd, 0x6, 0xb, 0x27, 0x12, 0x14, 0x8, 0xe, 0x15, 0x20, 0x1a, 0x2, 0x1e, 0x7, 0x4, 0x11, 0x5, 0x3, 0x1c, 0x22, 0x25, 0xc, 0x24];
var _0x4da0dc = [];
var _0x12605e = '';
for (var _0x20a7bf = 0x0; _0x20a7bf < this['\x6c\x65\x6e\x67\x74\x68']; _0x20a7bf++) {
var _0x385ee3 = this[_0x20a7bf];
for (var _0x217721 = 0x0; _0x217721 < _0x4b082b[_0x55f3('0x16', '\x61\x48\x2a\x4e')]; _0x217721++) {
if (_0x4b082b[_0x217721] == _0x20a7bf + 0x1) {
_0x4da0dc[_0x217721] = _0x385ee3;
}
}
}
_0x12605e = _0x4da0dc['\x6a\x6f\x69\x6e']('');
return _0x12605e;
};
var _0x23a392 = arg1[_0x55f3('0x19', '\x50\x67\x35\x34')]();
arg2 = _0x23a392[_0x55f3('0x1b', '\x7a\x35\x4f\x26')](_0x5e8b26);
setTimeout('\x72\x65\x6c\x6f\x61\x64\x28\x61\x72\x67\x32\x29', 0x2);
};
var _0x4db1c = function () {
function _0x355d23(_0x450614) {
if (('' + _0x450614 / _0x450614)[_0x55f3('0x1c', '\x56\x32\x4b\x45')] !== 0x1 || _0x450614 % 0x14 === 0x0) {
(function () {} [_0x55f3('0x1d', '\x43\x4e\x55\x59')]((undefined + '')[0x2] + (!![] + '')[0x3] + ([][_0x55f3('0x1e', '\x77\x38\x50\x52')]() + '')[0x2] + (undefined + '')[0x0] + (![] + [0x0] + String)[0x14] + (![] + [0x0] + String)[0x14] + (!![] + '')[0x3] + (!![] + '')[0x1])());
} else {
(function () {} ['\x63\x6f\x6e\x73\x74\x72\x75\x63\x74\x6f\x72']((undefined + '')[0x2] + (!![] + '')[0x3] + ([][_0x55f3('0x1f', '\x4c\x24\x28\x44')]() + '')[0x2] + (undefined + '')[0x0] + (![] + [0x0] + String)[0x14] + (![] + [0x0] + String)[0x14] + (!![] + '')[0x3] + (!![] + '')[0x1])());
}
_0x355d23(++_0x450614);
}
try {
_0x355d23(0x0);
} catch (_0x54c483) {}
};
if (function () {
var _0x470d8f = function () {
var _0x4c97f0 = !![];
return function (_0x1742fd, _0x4db1c) {
var _0x48181e = _0x4c97f0 ? function () {
if (_0x4db1c) {
var _0x55f3be = _0x4db1c['\x61\x70\x70\x6c\x79'](_0x1742fd, arguments);
_0x4db1c = null;
return _0x55f3be;
}
} : function () {};
_0x4c97f0 = ![];
return _0x48181e;
};
}();
var _0x501fd7 = _0x470d8f(this, function () {
var _0x4c97f0 = function () {
return '\x64\x65\x76';
},
_0x1742fd = function () {
return '\x77\x69\x6e\x64\x6f\x77';
};
var _0x55f3be = function () {
var _0x3ad9a1 = 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 !_0x3ad9a1['\x74\x65\x73\x74'](_0x4c97f0['\x74\x6f\x53\x74\x72\x69\x6e\x67']());
};
var _0x1b93ad = function () {
var _0x20bf34 = new RegExp('\x28\x5c\x5c\x5b\x78\x7c\x75\x5d\x28\x5c\x77\x29\x7b\x32\x2c\x34\x7d\x29\x2b');
return _0x20bf34['\x74\x65\x73\x74'](_0x1742fd['\x74\x6f\x53\x74\x72\x69\x6e\x67']());
};
var _0x5afe31 = function (_0x178627) {
var _0x1a0f04 = ~-0x1 >> 0x1 + 0xff % 0x0;
if (_0x178627['\x69\x6e\x64\x65\x78\x4f\x66']('\x69' === _0x1a0f04)) {
_0xd79219(_0x178627);
}
};
var _0xd79219 = function (_0x5792f7) {
var _0x4e08d8 = ~-0x4 >> 0x1 + 0xff % 0x0;
if (_0x5792f7['\x69\x6e\x64\x65\x78\x4f\x66']((!![] + '')[0x3]) !== _0x4e08d8) {
_0x5afe31(_0x5792f7);
}
};
if (!_0x55f3be()) {
if (!_0x1b93ad()) {
_0x5afe31('\x69\x6e\x64\u0435\x78\x4f\x66');
} else {
_0x5afe31('\x69\x6e\x64\x65\x78\x4f\x66');
}
} else {
_0x5afe31('\x69\x6e\x64\u0435\x78\x4f\x66');
}
});
_0x501fd7();
var _0x3a394d = function () {
var _0x1ab151 = !![];
return function (_0x372617, _0x42d229) {
var _0x3b3503 = _0x1ab151 ? function () {
if (_0x42d229) {
var _0x7086d9 = _0x42d229[_0x55f3('0x21', '\x4b\x4e\x29\x46')](_0x372617, arguments);
_0x42d229 = null;
return _0x7086d9;
}
} : function () {};
_0x1ab151 = ![];
return _0x3b3503;
};
}();
var _0x5b6351 = _0x3a394d(this, function () {
var _0x46cbaa = Function(_0x55f3('0x22', '\x26\x68\x5a\x59') + _0x55f3('0x23', '\x61\x48\x2a\x4e') + '\x29\x3b');
var _0x1766ff = function () {};
var _0x9b5e29 = _0x46cbaa();
_0x9b5e29[_0x55f3('0x26', '\x61\x48\x2a\x4e')]['\x6c\x6f\x67'] = _0x1766ff;
_0x9b5e29[_0x55f3('0x29', '\x56\x25\x59\x52')][_0x55f3('0x2a', '\x50\x5e\x45\x71')] = _0x1766ff;
_0x9b5e29[_0x55f3('0x2c', '\x6c\x67\x4d\x30')][_0x55f3('0x2d', '\x4c\x24\x28\x44')] = _0x1766ff;
_0x9b5e29[_0x55f3('0x2f', '\x43\x5a\x63\x38')][_0x55f3('0x30', '\x57\x75\x36\x25')] = _0x1766ff;
});
_0x5b6351();
try {
return !!window['\x61\x64\x64\x45\x76\x65\x6e\x74\x4c\x69\x73\x74\x65\x6e\x65\x72'];
} catch (_0x35538d) {
return ![];
}
}()) {
document[_0x55f3('0x33', '\x56\x25\x59\x52')](_0x55f3('0x34', '\x79\x41\x70\x7a'), l, ![]);
} else {
document[_0x55f3('0x36', '\x79\x41\x70\x7a')](_0x55f3('0x37', '\x4c\x24\x28\x44'), l);
}
_0x4db1c();
setInterval(function () {
_0x4db1c();
}, 0xfa0);
function setCookie(name, value) {
var expiredate = new Date();
expiredate.setTime(expiredate.getTime() + (3600 * 1000));
document.cookie = name + "=" + value + ";expires=" + expiredate.toGMTString() + ";max-age=3600;path=/";
}
function reload(x) {
setCookie("acw_sc__v2", x);
document.location.reload();
}
</script></html>
- 案例源码一眼即可看见“function reload(x) {setCookie(“acw_sc__v2”, x)”中的x就是我们要找的acw_sc__v2对应的值，那么逆向x的出处！
- 先将源码的\x12这种代码（usc2编码）还原（转为ansi编码），再看何处调用了reload方法，快速定位到三行关键代码：
var _0x23a392 = arg1[_0x55f3('0x19', '\x50\x67\x35\x34')]();
arg2 = _0x23a392[_0x55f3('0x1b', '\x7a\x35\x4f\x26')](_0x5e8b26);
setTimeout('\x72\x65\x6c\x6f\x61\x64\x28\x61\x72\x67\x32\x29', 0x2);
第一行意思为：将arg1变量通过固定算法加密
第二行意思为：将arg1加密后的值在与_0x5e8b26变量经过固定算法加密
第三行意思为：调用reload方法，将最终加密结果传入reload方法设置名为acw_sc__v2的Cookie
4. 以上分析完成，具体算法不做分享
算法实测
- 某网站请求的arg1值和acw_sc__v2的cookie
- 将arg1值代入已翻译的算法中，得到完整一样的acw_sc__v2结果
完整翻译算法下载地址【可直接调用】
链接：https://pan.baidu.com/s/1T6L_V50cVLlUccQ3bbzk9Q
提取码：2bj2
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