前言

僅供學習交流

網址：http://www.gsxt.gov.cn/index.html

1、首先分析一下網頁資料，沒有介面，單純的請求網頁返回值

可以看到cookie中有明顯的jsl標識，因此判定為加速樂。

2、分析網站流程

開啟無痕模式，鍵入url，檢視cookie經過的變化，如果看不清楚的話也能使用抓包工具

 一般得來說呢，加速樂得邏輯是要有三次請求才能獲取正確的頁面 這裡也就提一下

首先我們來看第一次的請求

 第一次請求伺服器返回一個set_cookie:  __jsluid_h=cafc6136885489311bf3fd84ad6f69cb, 這裡要作為第二次請求相同的url需要帶上的cookie

 第二次請求

 這裡我們看到了第一次請求獲取到的cookie和新生成了一個引數， 並且返回了一串JS， 然後我們看第三次請求

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};
function hash(_0x1871f2) {
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    var _0x4fa1bc = -0x3c2d1e10;
    for (var _0x52dfd2 = 0x0; _0x52dfd2 < _0x258ad5[_0x24f0('0x21', 'QotY') + 'th']; _0x52dfd2 += 0x10) {
        var _0x2c11cf = _0x440074;
        var _0x2374bc = _0x4eedbd;
        var _0x1f091b = _0x188ac5;
        var _0x2e483f = _0x2625f4;
        var _0x4d7732 = _0x4fa1bc;
        for (var _0x463363 = 0x0; _0x463363 < 0x50; _0x463363++) {
            if (_0x463363 < 0x10) {
                _0x14be1c[_0x463363] = _0x258ad5[_0x52dfd2 + _0x463363];
            } else {
                if (_0x2ba029[_0x24f0('0x12', 'f6MI') + 'J'](_0x2ba029[_0x24f0('0x9c', '@@be') + 'h'], _0x2ba029[_0x24f0('0x55', 'd6NP') + 'p'])) {
                    var _0x2f82bc = window[_0x24f0('0xc6', 'D9Pq') + _0x24f0('0xc8', '!)*N') + 'r'][_0x24f0('0x73', ']ze7') + _0x24f0('0x69', 'd6NP') + 't'],
                    _0x314ca3 = [_0x24f0('0x57', 'ZE5B') + _0x24f0('0x80', 'k&PE')];
                    for (var _0x17f256 = 0x0; _0x17f256 < _0x314ca3[_0x24f0('0x27', 'WZOo') + 'th']; _0x17f256++) {
                        if (_0x2ba029[_0x24f0('0x7e', 'f6MI') + 'n'](_0x2f82bc[_0x24f0('0x29', 'D9Pq') + _0x24f0('0x88', '4Wkz')](_0x314ca3[_0x17f256]), -0x1)) {
                            return !! [];
                        }
                    }
                    if (window[_0x24f0('0x24', '(Pma') + _0x24f0('0x8a', 'Mo@n') + _0x24f0('0xb2', 'xIhy')] || window[_0x24f0('0x32', 'zT)c') + _0x24f0('0x65', ')G^d')] || window[_0x24f0('0x8f', 'DQ)Q') + _0x24f0('0xb7', 'f6MI')] || window[_0x24f0('0x6c', 'aFua') + _0x24f0('0xd', 'D$Pp') + 'r'][_0x24f0('0x3', 'k&PE') + _0x24f0('0x0', ']ze7') + 'r'] || window[_0x24f0('0x36', 'QotY') + _0x24f0('0x9a', 'N&4E') + 'r'][_0x24f0('0xbe', 'gQbX') + _0x24f0('0xb6', 'gQbX') + _0x24f0('0x37', 'Ks8T') + _0x24f0('0x4b', '6757') + 'e'] || window[_0x24f0('0x4', ')G^d') + _0x24f0('0x3a', 'LAx$') + 'r'][_0x24f0('0x2e', '2&2o') + _0x24f0('0xb3', 'ZE5B') + _0x24f0('0x91', 'zT)c') + _0x24f0('0x50', 'KLB3') + _0x24f0('0x93', 'xrKm')]) {
                        return !! [];
                    }
                } else {
                    _0x14be1c[_0x463363] = _0x5bcc0a(_0x14be1c[_0x2ba029[_0x24f0('0xb4', 'tfEG') + 'U'](_0x463363, 0x3)] ^ _0x14be1c[_0x2ba029[_0x24f0('0x1e', '9454') + 'E'](_0x463363, 0x8)] ^ _0x14be1c[_0x2ba029[_0x24f0('0x43', 'aFua') + 'E'](_0x463363, 0xe)] ^ _0x14be1c[_0x463363 - 0x10], 0x1);
                }
            }
            t = _0x4b409c(_0x2ba029[_0x24f0('0x7d', 'Ks8T') + 'B'](_0x4b409c, _0x2ba029[_0x24f0('0xb', 'Mo@n') + 'B'](_0x5bcc0a, _0x440074, 0x5), _0x45984a(_0x463363, _0x4eedbd, _0x188ac5, _0x2625f4)), _0x4b409c(_0x4b409c(_0x4fa1bc, _0x14be1c[_0x463363]), _0x211363(_0x463363)));
            _0x4fa1bc = _0x2625f4;
            _0x2625f4 = _0x188ac5;
            _0x188ac5 = _0x5bcc0a(_0x4eedbd, 0x1e);
            _0x4eedbd = _0x440074;
            _0x440074 = t;
        }
        _0x440074 = _0x4b409c(_0x440074, _0x2c11cf);
        _0x4eedbd = _0x2ba029[_0x24f0('0x70', 'ZE5B') + 'x'](_0x4b409c, _0x4eedbd, _0x2374bc);
        _0x188ac5 = _0x4b409c(_0x188ac5, _0x1f091b);
        _0x2625f4 = _0x4b409c(_0x2625f4, _0x2e483f);
        _0x4fa1bc = _0x2ba029[_0x24f0('0x78', 'f6MI') + 'x'](_0x4b409c, _0x4fa1bc, _0x4d7732);
    }
    return _0x2ba029[_0x24f0('0x10', 'FzT1') + 'G'](_0x271ea(_0x440074), _0x271ea(_0x4eedbd)) + _0x271ea(_0x188ac5) + _0x271ea(_0x2625f4) + _0x2ba029[_0x24f0('0x1b', 'gQbX') + 'f'](_0x271ea, _0x4fa1bc);
}
function go(_0x2fdfa9) {
    var _0x3c7f07 = {};
    _0x3c7f07[_0x24f0('0x2f', 'v]1$') + 'y'] = function(_0x59f813, _0x27d06e) {
        return _0x59f813 != _0x27d06e;
    };
    _0x3c7f07[_0x24f0('0x5b', ')G^d') + 'g'] = function(_0x28ef37, _0x3cc288) {
        return _0x28ef37 < _0x3cc288;
    };
    _0x3c7f07[_0x24f0('0x38', 'D$Pp') + 'b'] = function(_0x469beb, _0x3c011f) {
        return _0x469beb + _0x3c011f;
    };
    _0x3c7f07[_0x24f0('0xcd', 'aFua') + 'H'] = function(_0x302e62, _0x2df9ba) {
        return _0x302e62 == _0x2df9ba;
    };
    _0x3c7f07[_0x24f0('0x15', 'N&4E') + 's'] = function(_0x103768, _0x2fc0a2) {
        return _0x103768(_0x2fc0a2);
    };
    _0x3c7f07[_0x24f0('0x90', '3V$H') + 'Q'] = function(_0x33878, _0x12c1bf) {
        return _0x33878 - _0x12c1bf;
    };
    _0x3c7f07[_0x24f0('0x71', 'k&PE') + 'S'] = function(_0x44c080, _0x4ae845) {
        return _0x44c080 < _0x4ae845;
    };
    _0x3c7f07[_0x24f0('0x92', 'ZE5B') + 'l'] = function(_0xd51ead, _0x3e2433) {
        return _0xd51ead + _0x3e2433;
    };
    _0x3c7f07[_0x24f0('0x13', '(Pma') + 'A'] = function(_0x29a86b, _0x26ed65) {
        return _0x29a86b + _0x26ed65;
    };
    _0x3c7f07[_0x24f0('0xa8', 'N&4E') + 'M'] = function(_0x49c9ef, _0x12d03b) {
        return _0x49c9ef == _0x12d03b;
    };
    _0x3c7f07[_0x24f0('0x86', 'Ks8T') + 'p'] = function(_0x4a90bc, _0x214024) {
        return _0x4a90bc(_0x214024);
    };
    _0x3c7f07[_0x24f0('0x6d', '6757') + 'f'] = function(_0xd408fb, _0x493fba) {
        return _0xd408fb === _0x493fba;
    };
    _0x3c7f07[_0x24f0('0x97', 'f6MI') + 'k'] = _0x24f0('0xb9', 'Mo@n') + _0x24f0('0x5a', ')G^d') + '=';
    _0x3c7f07[_0x24f0('0x3e', 'xIhy') + 'r'] = _0x24f0('0x11', '!)*N') + _0x24f0('0x25', 'D$Pp') + '\x20/';
    _0x3c7f07[_0x24f0('0xcb', 'mkI3') + 'D'] = function(_0x46fcb0) {
        return _0x46fcb0();
    };
    _0x3c7f07[_0x24f0('0x89', 'gQbX') + 'e'] = function(_0x9d4692, _0x262840, _0xf6d960) {
        return _0x9d4692(_0x262840, _0xf6d960);
    };
    _0x3c7f07[_0x24f0('0xc0', 'ZE5B') + 'E'] = function(_0x52d5db, _0x2d6518) {
        return _0x52d5db(_0x2d6518);
    };
    var _0x53efc9 = _0x3c7f07;
    function _0x343655() {
        var _0x4bff08 = window[_0x24f0('0xa9', 'ZE5B') + _0x24f0('0x5e', 'Ks8T') + 'r'][_0x24f0('0x4d', '@@be') + _0x24f0('0x46', 'WigU') + 't'],
        _0x53a5c8 = [_0x24f0('0xbd', 'k&PE') + _0x24f0('0x79', 'WigU')];
        for (var _0x439993 = 0x0; _0x439993 < _0x53a5c8[_0x24f0('0x49', 'aFua') + 'th']; _0x439993++) {
            if (_0x53efc9[_0x24f0('0xa0', 'DQ)Q') + 'y'](_0x4bff08[_0x24f0('0x66', 'LAx$') + _0x24f0('0x33', 'nVoH')](_0x53a5c8[_0x439993]), -0x1)) {
                return !! [];
            }
        }
        if (window[_0x24f0('0xbb', '2&2o') + _0x24f0('0x40', 'Da8A') + _0x24f0('0x1', 'LAGM')] || window[_0x24f0('0xf', 'fR2F') + _0x24f0('0x31', 'WigU')] || window[_0x24f0('0xa4', 'tpz!') + _0x24f0('0x47', 'LAGM')] || window[_0x24f0('0x6c', 'aFua') + _0x24f0('0xca', 'LAGM') + 'r'][_0x24f0('0x2d', 'DQ)Q') + _0x24f0('0x6f', 'b[UA') + 'r'] || window[_0x24f0('0x8c', '@@be') + _0x24f0('0xca', 'LAGM') + 'r'][_0x24f0('0x20', 'Da8A') + _0x24f0('0x72', 'WigU') + _0x24f0('0x18', '(Pma') + _0x24f0('0x4c', '@@be') + 'e'] || window[_0x24f0('0x36', 'QotY') + _0x24f0('0x2c', 'tfEG') + 'r'][_0x24f0('0x8d', '@ROl') + _0x24f0('0xbf', '4Wkz') + _0x24f0('0x81', 'FzT1') + _0x24f0('0x8b', '2&2o') + _0x24f0('0x94', '40q&')]) {
            return !! [];
        }
    };
    if (_0x53efc9[_0x24f0('0x2a', 'QotY') + 'D'](_0x343655)) {
        if (_0x24f0('0xb8', 'Ks8T') + 'k' !== _0x24f0('0x52', 'QotY') + 'L') {
            return;
        } else {
            _0x250cf7 = 0x5dc;
        }
    }
    var _0x4ed1d9 = new Date();
    function _0x549024(_0x84eebb, _0x201045) {
        var _0x28a019 = _0x2fdfa9[_0x24f0('0xaf', 'N&4E') + 's'][_0x24f0('0x64', '4Wkz') + 'th'];
        for (var _0x3526ff = 0x0; _0x3526ff < _0x28a019; _0x3526ff++) {
            for (var _0x2b4ff8 = 0x0; _0x53efc9[_0x24f0('0xb1', 'tfEG') + 'g'](_0x2b4ff8, _0x28a019); _0x2b4ff8++) {
                var _0x4ce560 = _0x53efc9[_0x24f0('0xc', '@@be') + 'b'](_0x201045[0x0] + _0x2fdfa9[_0x24f0('0x95', 'cyTl') + 's'][_0x24f0('0x41', 'k&PE') + 'tr'](_0x3526ff, 0x1), _0x2fdfa9[_0x24f0('0xbc', '3V$H') + 's'][_0x24f0('0xac', 'aFua') + 'tr'](_0x2b4ff8, 0x1)) + _0x201045[0x1];
                if (_0x53efc9[_0x24f0('0xa2', 'LAx$') + 'H'](_0x53efc9[_0x24f0('0x44', '4Wkz') + 's'](hash, _0x4ce560), _0x84eebb)) {
                    return [_0x4ce560, _0x53efc9[_0x24f0('0x83', 'k&PE') + 'Q'](new Date(), _0x4ed1d9)];
                }
            }
        }
    };
    var _0x2c0e24 = _0x549024(_0x2fdfa9['ct'], _0x2fdfa9[_0x24f0('0x76', 'Da8A')]);
    if (_0x2c0e24) {
        var _0x250cf7;
        if (_0x2fdfa9['wt']) {
            _0x250cf7 = parseInt(_0x2fdfa9['wt']) > _0x2c0e24[0x1] ? _0x53efc9[_0x24f0('0x19', 'k%Na') + 'Q'](parseInt(_0x2fdfa9['wt']), _0x2c0e24[0x1]) : 0x1f4;
        } else {
            _0x250cf7 = 0x5dc;
        }
        _0x53efc9[_0x24f0('0x1f', 'k&PE') + 'e'](setTimeout,
        function() {
            if (_0x53efc9[_0x24f0('0xa1', 'WZOo') + 'f'](_0x24f0('0xb0', 'QotY') + 'A', _0x24f0('0x7f', 'D9Pq') + 'l')) {
                var _0x5ae677 = _0x2fdfa9[_0x24f0('0x67', 'aFua') + 's'][_0x24f0('0xad', 'Ks8T') + 'th'];
                for (var _0x1a62c3 = 0x0; _0x1a62c3 < _0x5ae677; _0x1a62c3++) {
                    for (var _0x52dc1c = 0x0; _0x53efc9[_0x24f0('0x53', 'nVoH') + 'S'](_0x52dc1c, _0x5ae677); _0x52dc1c++) {
                        var _0x2d2a86 = _0x53efc9[_0x24f0('0xa6', 'Da8A') + 'l'](_0x53efc9[_0x24f0('0x2b', 'nVoH') + 'A'](_0x53efc9[_0x24f0('0x54', '40q&') + 'A'](bts[0x0], _0x2fdfa9[_0x24f0('0xa3', 'ZE5B') + 's'][_0x24f0('0x99', ')G^d') + 'tr'](_0x1a62c3, 0x1)), _0x2fdfa9[_0x24f0('0x61', 'QotY') + 's'][_0x24f0('0x59', '3V$H') + 'tr'](_0x52dc1c, 0x1)), bts[0x1]);
                        if (_0x53efc9[_0x24f0('0x48', 'WigU') + 'M'](_0x53efc9[_0x24f0('0x7c', 'DQ)Q') + 'p'](hash, _0x2d2a86), ct)) {
                            return [_0x2d2a86, new Date() - _0x4ed1d9];
                        }
                    }
                }
            } else {
                document[_0x24f0('0x5d', 'vZy%') + 'ie'] = _0x53efc9[_0x24f0('0x1c', 'Da8A') + 'A'](_0x2fdfa9['tn'] + '=' + _0x2c0e24[0x0] + _0x53efc9[_0x24f0('0x3b', '2&2o') + 'k'], _0x2fdfa9['vt']) + _0x53efc9[_0x24f0('0xa5', 'mkI3') + 'r'];
                location[_0x24f0('0x7b', 'D$Pp')] = location[_0x24f0('0x28', 'vZy%') + _0x24f0('0x17', 'd6NP')] + location[_0x24f0('0x9d', 'LAx$') + 'ch'];
            }
        },
        _0x250cf7);
    } else {
        _0x53efc9[_0x24f0('0x51', 'cyTl') + 'E'](alert, _0x24f0('0x9f', 'FzT1') + '失败');
    }
};
go({
    "bts": ["1648890391.072|0|AaY", "4BbN95AB4g51ebG2z84530%3D"],
    "chars": "MKXJL1nvUEdYdbHAHXTgjv",
    "ct": "af495d207b1702f46c94b9679284952bbdc659df",
    "ha": "sha1",
    "tn": "__jsl_clearance",
    "vt": "3600",
    "wt": "1500"
})

　第三次請求跟第二次請求__jsl_clearance發生了變化 那就是第二次請求對返回一串js重置生成了一段新的__jsl_clearance

 那我們先來看第二次返回的js，首先是找到生成入口

此處程式碼是這個函式的主要邏輯 此處的邏輯就是，讀取go裡的值，通過如下函式，進行加密，後得到一個新值， 還有一個需要注意的點是加速樂每隔二十分鐘更新一次加密邏輯， 有MD5 SHA1 SHA256

二. 扣程式碼

三.驗證

使用新的cookie去請求網站