Loading... # js逆向爬虫3 > 目标:百度翻译[百度翻译-200种语言互译、沟通全世界! (baidu.com)](https://fanyi.baidu.com/) ![image-20221228120613218.png](http://xherlock.top/usr/uploads/2022/12/3245720066.png) 定位需要的返回数据如上图,查看它的请求参数,api为v2transapi开头 <img src="http://xherlock.top/usr/uploads/2022/12/371674818.png" alt="image-20221228120722856" style="zoom:67%;" style=""> 搜索上面几个参数,其中最容易定位的是**simple_means_flag**,只搜索到一个结果 ![image-20221228120942042.png](http://xherlock.top/usr/uploads/2022/12/1010241490.png) 在源代码中打开,搜索**simple_means_flag**得到两个结果,都打上断点刷新调试;发现跳转到了**第二个**,说明这个才是关键加密函数 ![image-20221228121417038.png](http://xherlock.top/usr/uploads/2022/12/2928890563.png) 通过多次刷新发现,除了sign其他参数均为固定值,单步进入b函数,将整个函数复制下来 ![image-20221228121604066.png](http://xherlock.top/usr/uploads/2022/12/375023064.png) ![image-20221228121648441.png](http://xherlock.top/usr/uploads/2022/12/3892856057.png) 创建了个获取请求参数的函数,返回结果为一个字典变量 <img src="http://xherlock.top/usr/uploads/2022/12/4263483526.png" alt="image-20221228121741269" style="zoom: 50%;" style=""> 运行查看结果:41行的r未定义 ![image-20221228121842501.png](http://xherlock.top/usr/uploads/2022/12/2118242614.png) 找到源码中对应的位置打断点,查看r值,发现r值为空 ![image-20221228121942114.png](http://xherlock.top/usr/uploads/2022/12/1872608608.png) 故在41行前添加如下代码后再次运行 ~~~js var r = null; ~~~ ![image-20221228122102259.png](http://xherlock.top/usr/uploads/2022/12/2320839716.png) 报错说window变量未定义,光标移动到window变量上,在弹窗中找到gtk的值(d变量的值为gtk) <img src="http://xherlock.top/usr/uploads/2022/12/2695507194.png" alt="image-20221228143133495" style="zoom:67%;" style=""> 在40行前添加如下代码: ~~~js var window = {'gtk': '320305.131321201'} ~~~ 如图,获取了全部参数 <img src="http://xherlock.top/usr/uploads/2022/12/3486073920.png" alt="image-20221228143315650" style="zoom:50%;" style=""> ![image-20221228144403210.png](http://xherlock.top/usr/uploads/2022/12/2131506625.png) 完整代码: baidu.py ~~~python import requests import subprocess from functools import partial subprocess.Popen = partial(subprocess.Popen, encoding="utf-8") import execjs translate_words = input('请输入要翻译的内容:') ctx = execjs.compile(open('baidu.js', encoding='utf-8').read()) params = ctx.call('get_req_data', translate_words) # 获取输入语言类型 detect_lang = requests.post('https://fanyi.baidu.com/langdetect', data={'query': translate_words}).json() if detect_lang['lan'] == 'en': params['from'] = 'en' params['to'] = 'zh' headers = { 'Cookie': 'your cookie', } results = requests.post('https://fanyi.baidu.com/v2transapi?from=zh&to=en', data=params, headers=headers).json() print(results['trans_result']['data'][0]['dst']) ~~~ baidu.js ~~~js function n(t, e) { for (var n = 0; n < e.length - 2; n += 3) { var r = e.charAt(n + 2); r = "a" <= r ? r.charCodeAt(0) - 87 : Number(r), r = "+" === e.charAt(n + 1) ? t >>> r : t << r, t = "+" === e.charAt(n) ? t + r & 4294967295 : t ^ r } return t } function b(t) { var o, i = t.match(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g); if (null === i) { var a = t.length; a > 30 && (t = "".concat(t.substr(0, 10)).concat(t.substr(Math.floor(a / 2) - 5, 10)).concat(t.substr(-10, 10))) } else { for (var s = t.split(/[\uD800-\uDBFF][\uDC00-\uDFFF]/), c = 0, u = s.length, l = []; c < u; c++) "" !== s[c] && l.push.apply(l, function(t) { if (Array.isArray(t)) return e(t) }(o = s[c].split("")) || function(t) { if ("undefined" != typeof Symbol && null != t[Symbol.iterator] || null != t["@@iterator"]) return Array.from(t) }(o) || function(t, n) { if (t) { if ("string" == typeof t) return e(t, n); var r = Object.prototype.toString.call(t).slice(8, -1); return "Object" === r && t.constructor && (r = t.constructor.name), "Map" === r || "Set" === r ? Array.from(t) : "Arguments" === r || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(r) ? e(t, n) : void 0 } }(o) || function() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.") }()), c !== u - 1 && l.push(i[c]); var p = l.length; p > 30 && (t = l.slice(0, 10).join("") + l.slice(Math.floor(p / 2) - 5, Math.floor(p / 2) + 5).join("") + l.slice(-10).join("")) } var window = {'gtk': '320305.131321201'} var r = null; for (var d = "".concat(String.fromCharCode(103)).concat(String.fromCharCode(116)).concat(String.fromCharCode(107)), h = (null !== r ? r : (r = window[d] || "") || "").split("."), f = Number(h[0]) || 0, m = Number(h[1]) || 0, g = [], y = 0, v = 0; v < t.length; v++) { var _ = t.charCodeAt(v); _ < 128 ? g[y++] = _ : (_ < 2048 ? g[y++] = _ >> 6 | 192 : (55296 == (64512 & _) && v + 1 < t.length && 56320 == (64512 & t.charCodeAt(v + 1)) ? (_ = 65536 + ((1023 & _) << 10) + (1023 & t.charCodeAt(++v)), g[y++] = _ >> 18 | 240, g[y++] = _ >> 12 & 63 | 128) : g[y++] = _ >> 12 | 224, g[y++] = _ >> 6 & 63 | 128), g[y++] = 63 & _ | 128) } for (var b = f, w = "".concat(String.fromCharCode(43)).concat(String.fromCharCode(45)).concat(String.fromCharCode(97)) + "".concat(String.fromCharCode(94)).concat(String.fromCharCode(43)).concat(String.fromCharCode(54)), k = "".concat(String.fromCharCode(43)).concat(String.fromCharCode(45)).concat(String.fromCharCode(51)) + "".concat(String.fromCharCode(94)).concat(String.fromCharCode(43)).concat(String.fromCharCode(98)) + "".concat(String.fromCharCode(43)).concat(String.fromCharCode(45)).concat(String.fromCharCode(102)), x = 0; x < g.length; x++) b = n(b += g[x], w); return b = n(b, k), (b ^= m) < 0 && (b = 2147483648 + (2147483647 & b)), "".concat((b %= 1e6).toString(), ".").concat(b ^ f) } function get_req_data(query){ const w = { from: 'zh', to: 'en', query: query, transtype: '', simple_means_flag: 3, sign: b(query), token: "d21ee97178386951469ceda3f0d7caf7", domain: 'common' } return w; } console.log(get_req_data('今天是周三')) ~~~ 小结: * 百度翻译接口破解也很简单,和有道翻译相比要简单些,大部分参数都是固定的,只加密了一个; * 翻译上来看貌似有道更生动些:smile:,百度甚至把must be直译成了必须是 最后修改:2022 年 12 月 29 日 © 允许规范转载 打赏 赞赏作者 支付宝微信 赞 0 如果觉得我的文章对你有用,请随意赞赏