## 巴比特站点爬虫文档
- 网站 [https://www.8btc.com/flash](https://www.8btc.com/flash)
- 爬取的是 `快讯` 模块
## 反扒
- 下拉刷新更多,抓包,如下![抓包](1.png)
- 经过多次测试,请求头中的 `authorization` 参数,每次请求都会变化,为必要参数。
## `authorization` 的破解
- 全局搜索该关键字即可定位到关键代码![定位参数生成位置](2.png)
- 下拉,点击 `查看更多`,发现断点生效![参数分析](4.png)
### device_id
- `device_id` 由 `Object(i.u)(20, 20)` 生成
- 控制台输入 `i.u`,并点击进去,发现如下代码:
```javascript
function w(e, t) {
for (var n = "", a = t ? Math.round(Math.random() * (t - e)) + e : e, i = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"], r = 0; r < a; r++) {
n += i[Math.round(Math.random() * (i.length - 1))]
}
return n
}
```
- 该代码就可以直接生成 `device_id` 参数,且不需要额外的补环境
- 其中参数 e 和 t 都是定值 20
### sign
- `sign` 由 `Object(i.d)(c, "WTAHAPPYACTIVITY")` 生成。其中 `i.d` 是函数 `E`,且接收两个参数:`c` 和 `WTAHAPPYACTIVITY`
- 其中 c 为 `'{"appId":"1","timestamp":"1662101940","serverCode":"0"}'`
- i.d 函数,点击进去之后,发现如下代码
```javascript
function E(e, t) {
var n = {
mode: o.a.mode.ECB,
padding: o.a.pad.Pkcs7
}
, a = o.a.enc.Utf8.parse(t);
return o.a.AES.encrypt(e, a, n).toString().replace(/\//g, "_").replace(/\+/g, "-")
}
```
- AES-ECB 模式,Pkcs7 填充方式
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python爬虫案例 js逆向案例
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python爬虫案例 python爬虫练习案例,汇总一些简单的js逆向案例,看准网,网易云评论、房天下,粉笔网,企名片,天翼云,巨潮资讯,tokencap,新榜资讯,公共资源交易,欧科云链,得物等 使用方法: 克隆本项目至本地 git clone git@github.com:liyf-code/reverse_practice.git 准备 python 运行环境(version: 3.9.1) cd reverse_practice pip3 install -r requirements.txt 准备 nodejs 运行环境(version: 14.17.3) cd reverse_practice npm install
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