一、数据接口分析
主页地址:某得科技
1、抓包
通过抓包可以发现数据接口是AjaxLogin
2、判断是否有加密参数
-
请求参数是否加密?
查看“载荷”模块可以发现有一个password
加密参数和一个__RequestVerificationToken
-
请求头是否加密?
无 -
响应是否加密?
无 -
cookie是否加密?
查看cookie发现同样有一个__RequestVerificationToken
,但是与表单参数中的不同
二、加密位置定位
1、password
观察表单中的加密参数password
发现类似于base64转码,在控制台进行测试,发现确实就是
2、表单参数__RequestVerificationToken
通过搜索关键字可以发现,表单中的__RequestVerificationToken
是取的html静态页面中的数值
3、cookie中的__RequestVerificationToken
清除cookie之后刷新页面,可以发现,是在请求静态页面时服务器设置的cookie
三、思路
首先请求html页面,获取到表单中的__RequestVerificationToken
以及cookie,再根据获取到数据发送登录请求。
四、避坑
在发送请求时会遇到一个报错
在发送请求时加上一个verify=False
的参数就可以了
源代码:
"""
Email:912917367@qq.com
Date: 2023/8/16 16:38
"""
import base64
import reimport requestsclass Spider:def __init__(self, username, password):self.session = requests.session()self.session.headers = {"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7","Accept-Language": "zh-CN,zh;q=0.9","Cache-Control": "no-cache","Connection": "keep-alive","Pragma": "no-cache","Sec-Fetch-Dest": "document","Sec-Fetch-Mode": "navigate","Sec-Fetch-Site": "none","Sec-Fetch-User": "?1","Upgrade-Insecure-Requests": "1","User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36","sec-ch-ua": "^\\^Not/A)Brand^^;v=^\\^99^^, ^\\^Google","sec-ch-ua-mobile": "?0","sec-ch-ua-platform": "^\\^Windows^^"}self.token = ''self.username = ''self.password = ''def get_token(self):url = "https://www.leadbank.com.cn/login/"# url = "https://www.baidu.com"response = self.session.get(url, verify=False)pattern = r'<input name="__RequestVerificationToken" type="hidden" value="(.*?)"'self.token = re.findall(pattern, response.text)[0]def login(self):encoded_bytes = base64.b64encode(self.password.encode('utf-8'))pwd = encoded_bytes.decode('utf-8')url = "https://www.leadbank.com.cn/customer/AjaxLogin"data = {"userName": self.username,"password": pwd,"mark": "encry","rememberMe": "false","returnUrl": "","validcode": "n948","random": "1692176276000","__RequestVerificationToken": self.token}response = self.session.post(url, data=data, verify=False)print(response.text)print(response)if __name__ == '__main__':s = Spider('账号', '密码')s.get_token()s.login()