Python调用，爬虫JS混淆——数据加密获取步骤和方法
JS混淆
加密数据是无法通过在后台找到接口进行请求来获取数据
目标网站：https://www.endata.com.cn/BoxOffice/BO/Year/index.html
1. html中无法找到正文数据
2. 点击xhr中查看，发现有一组加密的接口和数据。
3. 搜索JSON.parse发现多个接口JS文件，无法定位JS位置，再次将XHR中找到的接口进行搜索。
4. 进入到JS源代码中，进行搜索JSON.parse，进行打断点。
5. 刷新网站，将加密参数写入JS脚本。
data 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6. 进行单步调试，发现参数变化成为混淆参数，将参数复制到JS脚本中。
var webDES = function() {
var _0x4da59e = {
'bUIIa': function _0x2a2af9(_0x779387, _0x4a4fec) {
return _0x779387 + _0x4a4fec;
}
};
var _0x9843d3 = function(_0x29d556, _0xcc6df, _0x3d7020) {
if (0x0 == _0xcc6df)
return _0x29d556[_0x2246('0x254', '4VZ$')](_0x3d7020);
var _0x48914b;
_0x48914b = '' + _0x29d556[_0x2246('0x255', 'GL3Q')](0x0, _0xcc6df);
return _0x48914b += _0x29d556['substr'](_0x4da59e[_0x2246('0x256', 'DK[&')](_0xcc6df, _0x3d7020));
};
this[_0x2246('0x257', 'nArV')] = function(_0xa0c834) {
var _0x51eedc = {
'pKENi': function _0x2f627(_0x5b6f5a, _0x440924) {
return _0x5b6f5a === _0x440924;
},
'wnfPa': 'ZGz',
'VMmle': '7|1|8|9|5|2|3|6|0|4',
'GKWFf': function _0x1a4e13(_0x40cfde, _0x16f3c2) {
return _0x40cfde == _0x16f3c2;
},
'MUPgQ': function _0x342f0d(_0x19038b, _0x4004d6) {
return _0x19038b >= _0x4004d6;
},
'hLXma': function _0x55adaf(_0x45a871, _0x161bdf) {
return _0x45a871 + _0x161bdf;
},
'JdOlO': function _0x13e00a(_0x5899a9, _0x4bb34d) {
return _0x5899a9 + _0x4bb34d;
},
'qrTpg': function _0x1198fb(_0x55b317, _0x22e1db, _0x1b091a) {
return _0x55b317(_0x22e1db, _0x1b091a);
},
'pdmMk': function _0xe2b022(_0x4af286, _0x4c2fd4) {
return _0x4af286 - _0x4c2fd4;
},
'xVKWW': function _0x1094a3(_0x5f3627, _0x2a0ac5, _0x3ad2e5) {
return _0x5f3627(_0x2a0ac5, _0x3ad2e5);
}
};
if (_0x51eedc[_0x2246('0x258', '@1Ws')](_0x2246('0x259', 'E&PI'), _0x51eedc['wnfPa'])) {
this['_append'](a);
return this[_0x2246('0x25a', 'GL3Q')]();
} else {
var _0x492a62 = _0x51eedc[_0x2246('0x25b', '&59Q')][_0x2246('0x25c', ')q#9')]('|')
, _0x356b01 = 0x0;
while (!![]) {
switch (_0x492a62[_0x356b01++]) {
case '0':
_0x554c90 = _grsa_JS[_0x2246('0x25d', 'E&PI')]['decrypt']({
'ciphertext': _grsa_JS['enc'][_0x2246('0x25e', 'sy^o')]['parse'](_0xa0c834)
}, _0x2cf8ae, {
'iv': _0x554c90,
'mode': _grsa_JS[_0x2246('0x16c', 'O^50')][_0x2246('0x25f', 'Who^')],
'padding': _grsa_JS[_0x2246('0x260', '7IfV')][_0x2246('0x261', 'E&PI')]
})[_0x2246('0x1c', 'yY#5')](_grsa_JS['enc'][_0x2246('0x262', ']2BX')]);
continue;
case '1':
if (_0x51eedc[_0x2246('0x263', 'Jsmq')](null, _0xa0c834) || _0x51eedc[_0x2246('0x264', '!2eC')](0x10, _0xa0c834['length']))
return _0xa0c834;
continue;
case '2':
_0xa0c834 = _0x9843d3(_0xa0c834, _0x2cf8ae, 0x8);
continue;
case '3':
_0x2cf8ae = _grsa_JS[_0x2246('0x265', 'RQ2o')][_0x2246('0x266', '3j7z')][_0x2246('0x267', 'RQ2o')](_0x554c90);
continue;
case '4':
return _0x554c90[_0x2246('0x268', 'cs*4')](0x0, _0x51eedc[_0x2246('0x269', 'MVsm')](_0x554c90[_0x2246('0x26a', '0J6f')]('}'), 0x1));
case '5':
_0x554c90 = _0xa0c834[_0x2246('0x26b', 'UwHa')](_0x2cf8ae, 0x8);
continue;
case '6':
_0x554c90 = _grsa_JS[_0x2246('0x26c', '4VZ$')]['Utf8']['parse'](_0x554c90);
continue;
case '7':
if (!navigator || !navigator[_0x2246('0x26d', '0I#o')])
return '';
continue;
case '8':
var _0x554c90 = _0x51eedc[_0x2246('0x26e', 'Yb4P')](_0x51eedc[_0x2246('0x26f', 'BQ5p')](parseInt, _0xa0c834[_0x51eedc[_0x2246('0x270', 'Z2VK')](_0xa0c834['length'], 0x1)], 0x10), 0x9)
, _0x2cf8ae = _0x51eedc[_0x2246('0x271', 'yY#5')](parseInt, _0xa0c834[_0x554c90], 0x10);
continue;
case '9':
_0xa0c834 = _0x9843d3(_0xa0c834, _0x554c90, 0x1);
continue;
}
break;
}
}
}
;
}
, webInstace = new webDES();
7. 运行JS脚本，补齐缺失的参数，在网站中找到_0x2246 位置，复制到JS脚本中。
var _0x2246 = function(_0x5c2ba4, _0x76e2e) {
_0x5c2ba4 = _0x5c2ba4 - 0x0;
var _0x32e905 = __0x2fb9f[_0x5c2ba4];
if (_0x2246['initialized'] === undefined) {
(function() {
var _0x6dc9dd = typeof window !== 'undefined' ? window : typeof process === 'object' && typeof require === 'function' && typeof global === 'object' ? global : this;
var _0x4dc154 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
_0x6dc9dd['atob'] || (_0x6dc9dd['atob'] = function(_0x2e7e78) {
var _0x27fca7 = String(_0x2e7e78)['replace'](/=+$/, '');
for (var _0x443da7 = 0x0, _0xd245ea, _0x20728f, _0x1a79d3 = 0x0, _0x2add8f = ''; _0x20728f = _0x27fca7['charAt'](_0x1a79d3++); ~_0x20728f && (_0xd245ea = _0x443da7 % 0x4 ? _0xd245ea * 0x40 + _0x20728f : _0x20728f,
_0x443da7++ % 0x4) ? _0x2add8f += String['fromCharCode'](0xff & _0xd245ea >> (-0x2 * _0x443da7 & 0x6)) : 0x0) {
_0x20728f = _0x4dc154['indexOf'](_0x20728f);
}
return _0x2add8f;
}
);
}());
var _0x9bf5c5 = function(_0x29e5a4, _0x4e0418) {
var _0x317a0c = [], _0x58cb6f = 0x0, _0x1ef9fa, _0x2b84ff = '', _0x406a41 = '';
_0x29e5a4 = atob(_0x29e5a4);
for (var _0x5e728c = 0x0, _0x36a9ad = _0x29e5a4['length']; _0x5e728c < _0x36a9ad; _0x5e728c++) {
_0x406a41 += '%' + ('00' + _0x29e5a4['charCodeAt'](_0x5e728c)['toString'](0x10))['slice'](-0x2);
}
_0x29e5a4 = decodeURIComponent(_0x406a41);
for (var _0x3895f0 = 0x0; _0x3895f0 < 0x100; _0x3895f0++) {
_0x317a0c[_0x3895f0] = _0x3895f0;
}
for (_0x3895f0 = 0x0; _0x3895f0 < 0x100; _0x3895f0++) {
_0x58cb6f = (_0x58cb6f + _0x317a0c[_0x3895f0] + _0x4e0418['charCodeAt'](_0x3895f0 % _0x4e0418['length'])) % 0x100;
_0x1ef9fa = _0x317a0c[_0x3895f0];
_0x317a0c[_0x3895f0] = _0x317a0c[_0x58cb6f];
_0x317a0c[_0x58cb6f] = _0x1ef9fa;
}
_0x3895f0 = 0x0;
_0x58cb6f = 0x0;
for (var _0x49f219 = 0x0; _0x49f219 < _0x29e5a4['length']; _0x49f219++) {
_0x3895f0 = (_0x3895f0 + 0x1) % 0x100;
_0x58cb6f = (_0x58cb6f + _0x317a0c[_0x3895f0]) % 0x100;
_0x1ef9fa = _0x317a0c[_0x3895f0];
_0x317a0c[_0x3895f0] = _0x317a0c[_0x58cb6f];
_0x317a0c[_0x58cb6f] = _0x1ef9fa;
_0x2b84ff += String['fromCharCode'](_0x29e5a4['charCodeAt'](_0x49f219) ^ _0x317a0c[(_0x317a0c[_0x3895f0] + _0x317a0c[_0x58cb6f]) % 0x100]);
}
return _0x2b84ff;
};
_0x2246['rc4'] = _0x9bf5c5;
_0x2246['data'] = {};
_0x2246['initialized'] = !![];
}
var _0x4b1179 = _0x2246['data'][_0x5c2ba4];
if (_0x4b1179 === undefined) {
if (_0x2246['once'] === undefined) {
_0x2246['once'] = !![];
}
_0x32e905 = _0x2246['rc4'](_0x32e905, _0x76e2e);
_0x2246['data'][_0x5c2ba4] = _0x32e905;
} else {
_0x32e905 = _0x4b1179;
}
return _0x32e905;
};
7. 再次运行JS脚本，发现缺少__0x2fb9f，在网站中找到__0x2fb9f位置，复制到JS脚本中。
var ynfqt = '__0x2fb9f'
, __0x2fb9f = ['w61yEQYNMcKN', 'UcK/IcOnwpLDkMO5', 'wpbCnjvCvwIaPcOxw7E=', 'w5vDizcu', 'w5LCtBs=', 'JcOreTk=', 'w6HCnjp/Tg==', 'KsOkw50FMQ==', 'w7zDqMOCUXI=', 'w7PCp3lkwokmw6oCXg==', 'CsOyczTDtcKlwpbDqUk=', 'GsKYbsK/w7g=', 'wr/DjhgJcA==', 'UlXChFNH', 'PsO7w4gKwrI=', 'Bn/DrcOrwqrDk8OQAA==', 'w47CtsK5wp7Djw==', 'wr3DsWHCtlk=', 'aGjCjlZF', 'T8KPCsOJBA==', 'w7LDqH7CrsKIMg==', 'MMOvw4UzBA==', 'YsKdIFsz', 'wo3DmcOGwpJn', 'NMOfeXdM', 'wofDicOuwrlS', 'wrlFcFrCvg==', 'wphSd8OrLg==', 'w6XDqFDCk8Ke', 'FMO8AsOFBQ==', 'wqrCtCPCnAw=', 'wpTDj3BHEw==', 'DcOHMcOEDQ==', 'fjsAwp/Chg==', 'HMKaQsKnw4Y=', 'w5otSMKBYQ==', 'w6PCkcK8woTDu0jCiWJRNkI=', 'ScK3wrXCmMOr', 'wonDgBIrc8O/XsOiA8KsXlHDmg==', 'woHCpcKCwpTDncKZFH/CocOVw68=', 'w5/Dh8Olflw=', 'w50owowb', 'bcKsD8On', 'w5/CmcK+wp4=', 'EMKOwqc5', 'NsK5d8Kmw6Y=', 'wr7DqMOnwpdg', 'WcKQWz/Dtywi', 'aE8ww6had8O2', 'w5ZPw7bCskY=', 'w6PClMKQwp7Dh17CgA==', 'U8KRw7fCvyoFw4bDgQ==', 'eHcfw6tP', 'NcOOw5w7EA==', 'wpfDkDs7bw==', 'V8KsK8OfwrE=', 'f8KUw5LCkTwSw4g=', 'wqRrdUXClXZo', 'w5zCp1R8wokxw7g=', 'w6zCn0ta', 'w7olTcK8', 'w6U8w5Bs', 'KcOtw7QPwrc=', 'w4nCgwp3UsOnOA==', 'w4nCkjp+XMOwNnAYbUbCrxU=', 'w53CtsKn', 'PsOgflZX', 'c8KbO8OHBQ==', 'w4bClFdkwp4=', 'LmPDqsOtwpI=', 'w5nDlTUgSMKaGsOlw5w/QnxnwpXCpQ==', 'wph1UkjCjnA=', 'w6TDvGPCqMKD', 'w6XDgzUyDg==', 'w7liwrDDqi/DgDTChMKiw54yeMOzwrnCtg==', 'wr3CvsKJwoPDusKJ', 'C0LDrkzDgw==', 'wonDgBgbMg==', 'wrXDlhgJdcOja8O4IsKySELDhcKWw7k=', 'DMOaCMO2KQ==', 'w6jClsK1wqDDow==', '5Lqa6IGt5Yiq6ZqvwpU5U3/CpMOHfsO2w5A=', 'SFXDjsKaw7E=', 'DcKzwrLDv8KL', 'fFjCjFBVw6/DjsOZw5HCoVVe', 'Y8KSeiHDoT89w4VEw7DDicOX', 'wqXClCrCqToYO8OSw6TDisOtSg==', 'w6JSw5fChjU=', 'JcOkeTPCqw==', 'N8O8w6QJwp/CjBvCllrDs8OKTQ==', 'J0rDolzClQ==', 'FcOyw592w4zCncKow5jCuizCqsKU', 'LsOzw5l3woc=', 'w7fDj8OBwpFKKsKxw7NpKjl2', 'woV0VcOrWw==', 'JsOEw40tGk7DnQdoEUvCjQ==', 'w6JVw4DCkGZhZWfCrg7Dp8O5Bg==', 'dcKJeyDDrD0=', 'McOUw4wsF0w=', 'wrhFecORCw==', 'w6osRMK8bA==', 'e8K+wrfCpcOG', 'A8K3Rg==', 'HcORw5wwAFvDmjY=', 'woDDqRAEZA==', 'CcOwcCnDrg==', 'M8KVcg==', 'wq7DucOU', 'w63DoMOv', 'KW3DvA==', 'J8K7QsKEwrg=', 'Y8KuHMKL', 'cHYlw4JT', 'w79LAw0z', 'w5hYw5E=', 'W8K5BcKz', 'w41Xw4DChmI=', 'w408woIEdsKCw7ldMw==', 'G8KjwpM4RA==', 'E8OXEsOhBcO1KsObd38U', 'w7zCi0VFG8KS', 'Y8KSeg==', 'w4nCi8K3woDDqVrCjkdA', 'KcONw7TDsyY=', 'w7s/wqfDlnU=', 'aFnCgm9H', 'w6rDt8OpwrRk', '5Lqb6ICM5Ymo6Zm/TsOrOUsSbxjCvFI=', 'JsO3w6MewoDClQHCsVI=', 'w6HDjsOIwpBcNMOrw4cw', 'TAsowpjCrXlTwoXCgg==', 'wot1WF3ClWF6IcOH', 'Z8KcwpA=', 'w7jDhiMk', 'KkPDqg==', 'DMOCE8O8IsO8', 'HsOtw45Vw4M=', 'w7APwrQNZQ==', 'w7TCgMKiwoPDnA==', 'w50Cd8KVbg==', 'KW3DqsO6woQ=', 'w6TCvGJiIg==', 'w6HDkcOOwopH', 'DsOAw4PDlgc=', 'wqnCkDrClDQGH8Oiw6fDlcOrU2kn', 'dcKFdxfDmw==', 'w4oKwrcmZA==', 'w6MjwprDkg==', 'FsOYCMOh', 'w5XClsK7woY=', 'GAoywpzCp38=', 'ScKpGMO/', 'wqjDgU/CtkPCmQ==', 'w6LCpWZ8wp8=', 'wqXDmEjCnFrCk8OmwpZcwpzDvgPDvlc=', 'L8OIbSPDjA==', 'w6bDjsOxwpdBM8Krw5Y=', 'w7ofwqI=', 'asOlwrYHw5bCgFjCqATDoMKcWhhvT0jCkMOyIA==', 'w7hYKzAr', 'IMOpw6sSwpI=', 'N0nDj8Ogwq8=', 'w7DCnMKowqTDrA==', 'AmUoBMOkw7U=', 'w5PCjsK0wrDDjg==', 'EMO2w6M8wqI=', 'w7rClCZ8ScOs', 'eDwU', 'w70hQsKiecOhwok=', 'w6l6RG1X', 'a8KTfTY=', 'w7ddEQ==', 'w7oswpc=', 'IcO8w593woI=', 'w4ZxAB4QO8KIw5Y=', 'PMKSwoDDpcO3', 'VUXDrsKDw7wnw7DDrELDq3Y=', 'UlMR', 'I8O4w7UIwoM=', 'GsOYAg==', 'wpjDjV3Dqw==', 'w6LDgMOQwpBW', 'w4/DlDUzfcKYOsOlw4s=', 'wpJpXl0=', 'GsOOFcOwIsO/', 'T1LCnUZtw63DiMO6w4Q=', 'wp5/Q0zClHE=', 'w4bCkgs=', 'w4nCu1xFwoI=', 'R3jCoWFzw4fDvMOUw6/Cg2l4LsK+w4E=', 'wr7DkFzCkVTCicOTwpc=', 'wpsBB8KXHg==', 'TMKdw77CmicZ', 'w7ZtGQ==', 'w5tZdUlZ', 'w4bCm0VcGw==', 'woTDtBUSTA==', 'RcKuCMOaE8OVL0PChQ==', 'bTAtwpfDvQ8Y', 'wphmW0U=', 'w5U9woHDg2RGWHAsbA==', 'dcKBw5nCiSE=', 'wo9KwofCiTRpMVPDux7Cow==', 'bkTCgUBh', 'VcKwFsOKLA==', 'GsOow4shwpU=', 'K3TDt8OFwrs=', 'OMOnKMO4JQ==', 'w5Bgw6PCs3I=', 'wp/DlTEycg==', 'MV/Di3XDlQ==', 'w7jCkVVSHA==', 'w6DCuXd9wpY=', 'CcOpewLDo8KlworDqg==', 'BMK5RsK1w7YOWMKd', 'UVwBw6tF', 'CsOpSDnDuA==', 'w6DCsH98', 'BsOdw7nDjC8=', 'w7hfIQ==', 'w7tXcnhq', 'McK2wrvDoA==', 'woxoRU3CiQ==', 'D0HDtUvDlQ==', 'wqXDiBQLZA==', 'dsKWw6jChx0=', 'Wj0g', 'w7HCnxB9bA==', 'CljDisOYwqI=', 'HsOuflZw', 'LVjDssOfwpk=', 'w4rDi8OqwrNy', 'w4pPZE9x', 'w49+wrHDsRk=', 'w49Xw5zCkWh4', 'wpXDtDkJVw==', 'fMKsDcOvwpLDng==', 'w7Yow49o', 'WcKvN8O6woQ=', 'wo/DgExRJw==', 'wrvCosKP', 'N8OTGQ==', 'AMKGwqwXXE/CtcOa', 'wr7DgV15Pg==', 'w6LDgxgbew==', 'w7vDr8Ox', 'dAM2woDCiw==', 'C8Oww5TDiS8=', 'LW4tD8Ob', 'w70nwosbSQ==', 'w4HCkxxqRA==', 'XHHDssKDw5E=', 'dcK0EcOfNg==', 'w4lZw6HCgXV8bkg=', 'wqbDkQ4A', 'wq5/Y8OsGB9Kw64=', 'DWEqDw==', 'w7HDjcONwo1W', 'w4TDhsODekEE', 'QEvCmER5', 'dn7CnlJN', 'w4XDssORwplC', 'w7k4wpHDlWZ2', 'w5scwo8DZg==', 'w43Dl8OvTnM=', 'wqfCgybCtgAALsOiw4vDisOqRA==', 'ScKjwqXCp8Oc', 'w4XCnMKxwpTDog==', 'w6AiwprDiA==', 'HcOyw5Jjw4HChQ==', 'woJmR8O+Pw==', 'w513woXDhjI=', 'KMOlEsOvPQ==', 'w7BYV1xE', 'w7osQMKiQ8O+wpnCvMKDMQ==', 'w6zDhMOHeUE=', 'cVPChlY=', 'w6F1Fg==', 'NMOEWQ==', 'XWfCuU1d', 'AcOHw4hJw4M=', 'YsKQPsOJNA==', 'w5zDjMOId3g=', 'w5k5w5lzwrk=', 'OMOsdnEq', 'woLDucOPwqdRVMOte2zChcOASw==', 'w6Mzw59yw7HCjMOxa8OHwr/DuMO8', 'wpPCoRvCqjo=', 'SUXDr8KEw5A=', 'w6s5w7tww6Q=', 'UVIAw6lUYA==', 'w6jCsXA=', 'bsKNwpfCiMOaw58x', 'YsKDwqHCgsOVw44=', 'wrLDgR4aeMO2Wg==', 'e1zCg04=', 'GsOyw4U=', 'wqTDgkx5DsKDYMO2RsKgw7shw5sMJlYcICl1YMK6', 'FMOvw4hhw5vCiQ==', 'Yx0mwpjCow==', 'YsKbwpvCnw==', 'MW4CAsOkw7zCmcKMZMKCLw==', 'S8KBKg==', 'w50pdMK+Yg==', 'wrN+Wg==', 'OsOrw5c4MQ==', 'w7TDom/CqsKSMw==', 'w5zCshlvSw==', 'wpXDqMOewrxGQw==', 'ecK2MXgf', 'wqRjVl3Cmw==', 'bcKiDcOowpzDhw==', 'w6otRsKSecOlwpjCqg==', 'wrhzXw==', 'Y8OlwrUHw5LCgF7CqAU=', 'wrLCgSXCsjc=', 'UcKpAsO/wpw=', 'w7kkwpTDpGtwUWw=', 'E8O7w5Nnw57CvsK1w6DCsw==', 'AG/DtUHDhw==', 'UTYtwos=', 'w59/Kw==', 'HsKdwoMNcQ==', 'w5DCk05YLcKVT8Okwr4NAXDDusO2', 'w7pXw6HCsWk=', 'JcOKcUp5', 'w7U0w5tCw7HCiMOgWg==', 'w6EqwokHasKVw6I=', 'w5lTw5HCh35ldG3Cpw3DtMO3', 'w7/CnyFv', 'wrXDhREE', 'LsOzw51ww5Q=', 'GcOscy7Dvw==', 'UkUGw6FbcA==', 'wrd8eA==', 'T8K/N8OIwrQ=', 'XRYTwpLDhg==', 'KcOxw68Cwq8=', 'bcKrBA==', 'dkjCm0pF', 'w5UhwrHDin1nXw==', 'f8KKw5LCkTwSw4g=', 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'w6XDlRItU8KcNA==', 'VsK7AWcVwpk3'];
(function(_0x13ecc8, _0x3e2859) {
var _0xd14b57 = function(_0x91fb5e) {
while (--_0x91fb5e) {
_0x13ecc8['push'](_0x13ecc8['shift']());
}
};
_0xd14b57(++_0x3e2859);
}(__0x2fb9f, 0x80));
8. 再次运行JS脚本，发现缺少环境navigator，需要模拟环境。
global.navigator = {'userAgent':'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36'}
9. 再次运行JS脚本，发现缺少_grsa_JS，发现网站中有很多个位置的_grsa_JS，只能将所有代码复制。（注释：过多的代码会加重运行速度，没有逆向的必要，可使用自动化来采集。）
10.全部JS代码复制进行运行，得到数据。
JS代码
艺恩js混淆代码