python逆向爬虫_python爬虫js逆向

js逆向要想是想，要非常熟悉web的运行流程，针对不同网站，有不同的思路，这个博客是针对人人直播的一个爬取，先直接上代码，然后在讲解，

import requests

import js2py

import json

headers = {

"User-Agent":"Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1",

}

session = requests.session()

context = js2py.EvalJs()

phoneNum = "*********"

password = "******"

context.t = {

"phoneNum":phoneNum,

"password":password,

"c1":-100

}

response = session.get("http://activity.renren.com/livecell/rKey",headers=headers)

result = json.loads(response.content.decode('utf-8'))

context.n = result["data"]

with open('BigInt.js','r',encoding='utf-8') as f:

context.execute(f.read())

with open('Barrett.js','r',encoding='utf-8') as f:

context.execute(f.read())

with open('RSA.js','r',encoding='utf-8') as f:

context.execute(f.read())

js = '''

t.password = t.password.split("").reverse().join("")

setMaxDigits(130)

var o = new RSAKeyPair(n.e,"",n.n)

var r = encryptedString(o, t.password)

t.password = r

t.rKey = n.rkey

'''

context.execute(js)

# 模拟登录

data = {

"c1":context.t.c1,

"password":context.t.password,

"phoneNum":context.t.phoneNum,

"rKey":context.t.rKey

}

response=session.post("http://activity.renren.com/livecell/ajax/clog",headers=headers,data=data)

with open('13-test.html','wb') as f:

f.write(response.content)

账号密码自己注册一个，别想着直接用啊，

context = js2py.EvalJs()，这个函数的运用要灵活，

所有的js文件都需要自己在浏览器上寻找的，这也是最膈应人的，经常性的看的我老眼昏花，

大概步骤：

访问页面，拿到js，读取写入，在ide中执行，获取自己构造请求的真实数据，发送请求