[Python知识库]js逆向有道翻译

python中使用md5 32位小写语法

from hashlib import md5
sign=md5((要加密的字符串).encode("utf-8")).hexdigest()

js文件

function mydate() {
    r = "" + (new Date).getTime();
    return r;
}
//盐：salt=mysalt(ts)  
function mysalt(a) {
    i = a+ parseInt(10 * Math.random(), 10);
    return i;
}

py文件,? ? ? ?这里要注意user-agent中只截取一部分

import execjs
import requests
import urllib3
from hashlib import md5
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
header={
    'Accept':'application/json, text/javascript, */*; q=0.01',
    'Accept-Encoding':'gzip, deflate, br',
    'Accept-Language':'zh-CN,zh;q=0.9',
    'Cache-Control':'no-cache',
    'Connection':'keep-alive',
    'Content-Length':'256',
    'Content-Type':'application/x-www-form-urlencoded; charset=UTF-8',
    'Cookie':'OUTFOX_SEARCH_USER_ID=-1314230209@10.110.96.158; OUTFOX_SEARCH_USER_ID_NCOO=1237104235.5745795; _ntes_nnid=9e5255dda0fb2eaeffa89ecda2e1b062,1648343512936; JSESSIONID=aaacZfeG0YHZze36Vfu-x; fanyi-ad-id=305366; fanyi-ad-closed=1; ___rl__test__cookies=1648530764694',
    'Host':'fanyi.youdao.com',
    'Origin':'https://fanyi.youdao.com',
    'Pragma':'no-cache',
    'Referer':'https://fanyi.youdao.com/',
    'sec-ch-ua':'"Not A;Brand";v="99","Chromium";v="99","Google Chrome";v="99"',
    'sec-ch-ua-mobile':'?0',
    'sec-ch-ua-platform':'"Windows"',
    'Sec-Fetch-Dest':'empty',
    'Sec-Fetch-Mode':'cors',
    'Sec-Fetch-Site':'same-origin',
    'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36',
    'X-Requested-With': 'XMLHttpRequest',
}
def structure_form(query):
    """
    读取js文件
    执行js代码得到我们苦求的sign值
    构造新的表单
    :return:
    """
    a="5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36"
    bv= md5(a.encode("utf-8")).hexdigest()
    print("bv是"+bv)
    print(header['User-Agent'])
    with open('test.js', 'r', encoding='utf-8') as f:
        ctx = execjs.compile(f.read())
    ts=ctx.call('mydate')
    print("ts是"+ts)
    salt=ctx.call('mysalt',ts)
    print("salt是"+salt)
    print("fanyideskweb" + query + salt + "Ygy_4c=r#e#4EX^NUGUc5")
    sign = md5(("fanyideskweb" + query + salt + "Ygy_4c=r#e#4EX^NUGUc5").encode("utf-8")).hexdigest()
    print("sign"+sign)
#    # sign成功获取，写入date
#    print("bv是"+sign)
#    return bv
    data={
        'i':query,
        'from':'AUTO',
        'to':'AUTO',
        'smartresult':'dict',
        'client':'fanyideskweb',
        'salt':salt,
        'sign':sign,
        'lts':ts,
        'bv':bv,
        'doctype':'json',
        'version':'2.1',
        'keyfrom':'fanyi.web',
        'action':'FY_BY_CLICKBUTTION'
    }
    print(data)
    return data
if __name__=='__main__':
    url='https://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule'         
    query="坚持"
    res = requests.post(url,data=structure_form(query),headers=header,verify=False).json()
    print(res)
    text=res["translateResult"][0][0]['src']
    texttran=res["translateResult"][0][0]['tgt']
    print(text+"翻译成"+texttran)