铜陵网站开发搭建网站运行环境

前言：此题cookie中有加密参数s，请求参数m和t也有加密，加密参数的那个js文件被ob混淆了。

1. 第一步：尝试翻页抓包，观察数据包参数，如图所示：
   
   
2. 第二步：跟栈找加密位置，如图所示：
   
   
   
   
3. 第三步：经过第二步的分析，我们已经初步找到m，s，t的加密位置了，现在可以开始扣代码了，如图所示：
   
4. 第四步：这里我会先把每个值的加密逻辑全部捋一遍，简化我们要写的方法，如图所示：
   
5. 第五步：有了第四步的get_sign函数后，我们就可以开始补代码了，缺啥补啥，如下：
   

js代码

function toHexString(_0x1ebd7f) {return Array["from"](_0x1ebd7f)["map"](_0xc67c4c => _0xc67c4c["charCodeAt"](0)["toString"](16)["padStart"](2, "0"))["join"]('');
}function mergeGroups(_0x264398) {return _0x264398["flat"]()["join"]('');
}function encryptGroup(_0x555578) {return _0x555578["map"](_0x538aee => {const _0x16263a = _0x538aee["charCodeAt"](0);let _0x1d0d16 = _0x16263a;_0x1d0d16 = _0x1d0d16 << 3 | _0x1d0d16 >>> 5;_0x1d0d16 ^= 90;_0x1d0d16 = _0x1d0d16 << 2 | _0x1d0d16 >>> 6;_0x1d0d16 ^= 63;_0x1d0d16 = _0x1d0d16 % 256;return String["fromCharCode"](_0x1d0d16);});
}function groupMessage(_0x2dffee, _0x79d0b8) {const _0x135e82 = _0x2dffee["split"](''),_0x1d7950 = [];for (let _0x2a5c42 = 0; _0x2a5c42 < _0x135e82["length"]; _0x2a5c42 += _0x79d0b8) {_0x1d7950["push"](_0x135e82["slice"](_0x2a5c42, _0x2a5c42 + _0x79d0b8));}return _0x1d7950;
}function OOOoO(_0x4e90fb) {const _0x1c3852 = 4,_0x1ba87b = groupMessage(_0x4e90fb, _0x1c3852),_0x588ee8 = _0x1ba87b["map"](encryptGroup),_0x391e71 = mergeGroups(_0x588ee8),_0x45845b = toHexString(_0x391e71);return _0x45845b;
}function OOOoOo(_0x240504, _0x8eefdc) {const _0x3a3671 = _0x240504["split"](''),_0x1959d4 = _0x8eefdc["split"](''),_0x582226 = 4;let _0x5ad857 = [];for (let _0x2d33d3 = 0; _0x2d33d3 < _0x3a3671["length"]; _0x2d33d3 += _0x582226) {let _0x38ae5f = _0x3a3671["slice"](_0x2d33d3, _0x2d33d3 + _0x582226);for (let _0x31873b = 0; _0x31873b < _0x38ae5f["length"]; _0x31873b++) {const _0x11057a = _0x38ae5f[_0x31873b]["charCodeAt"](0),_0x1a6269 = _0x1959d4[_0x31873b % _0x1959d4["length"]]["charCodeAt"](0),_0x25c979 = (_0x11057a + _0x1a6269) % 256;_0x38ae5f[_0x31873b] = String["fromCharCode"](_0x25c979);}_0x5ad857 = _0x5ad857["concat"](_0x38ae5f);}const _0x28d8b9 = _0x5ad857["join"](''),_0x36bdd2 = Array["from"](_0x28d8b9)["map"](_0x3c7e7a => _0x3c7e7a["charCodeAt"](0)["toString"](16)["padStart"](2, "0"))["join"]('');return _0x36bdd2;
}function get_sign(page){var time = new Date()["getTime"](),m =OOOoOo("oooooo" + time + page, "oooooo"),t = btoa(time),s = OOOoO("xoxoxoxo" + time);return {'m': m,'t': t,'s': s}
}

py代码

import asyncio, aiohttp, execjsclass AsyncSpider(object):def __init__(self):self.url = 'https://www.mashangpa.com/api/problem-detail/8/data/'self.headers = {'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36'}self.cookies = {'sessionid': '7iz4z3zugx9xbdrm2ykqpfaoswvf7a3o',}self.semaphore = asyncio.Semaphore(3)with open('2.js', 'r', encoding='utf') as f:self.ctx = execjs.compile(f.read())async def fetch_page(self, session, page):async with self.semaphore:sign = self.ctx.call('get_sign', page)data = {'page': f'{page}'}self.headers['m'] = sign['m']self.headers['t'] = sign['t']self.cookies['s'] = sign['s']async with session.post(self.url, headers = self.headers, cookies = self.cookies, json = data, timeout = 10) as res:data = await res.json()return data.get('current_array', [])async def parse_all_pages(self):total_sum = 0async with aiohttp.ClientSession() as session:tasks = [self.fetch_page(session, page) for page in range (1, 21)]results = await asyncio.gather(*tasks)for array in results:if array:total_sum +=sum(array)print(total_sum)if __name__ == '__main__':spider = AsyncSpider()asyncio.run(spider.parse_all_pages())