抖音去水印的思路技术博文 (图文+视频)

你的名字 2024-04-18 13:34 3阅读 0赞

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首先呢: 去抖音的用户主页,然后 读取用户连接

> https://www.iesdouyin.com/share/user/97349739502?u\_code=15de045df&sec\_uid=MS4wLjABAAAADKFFeyzIk3u1WsEC3-IlfApg24PoHTehbNJjjJY1-co&timestamp=1567835756&utm\_source=copy&utm\_campaign=client\_share&utm\_medium=android&share\_app\_name=douyin

抓包以后 我们发现 需要找的是 \_signature  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70]  
然后开始搜索  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 1]  
t.\_signature = signature,  
然后开始搜 signature  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 2]  
搜一两下,就找到了 可疑点

signature = _bytedAcrawler.sign(nonce),

然后我们搜 \_bytedAcrawler  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 3]

_bytedAcrawler = require("douyin_falcon:node_modules/byted-acrawler/dist/runtime")

下个断点我们进去看一下这个 require ,如下是进来以后的截图,然后推断就是这个函数了![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 4]  
然后调试这个函数 然后就是调试函数,修改函数  
![在这里插入图片描述][20190907142532897.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 5]  
然后整理出来一个Js  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 6]  
这个就是Js的流程,然后返回值, 拼接参数  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 7]  
返回值格式化以后,就会有无水印的链接  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 8]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1MzQ5OTgy_size_16_color_FFFFFF_t_70 4]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/87aaa29838b54ddfb0e510562b37c9c7.png
[20190907142532897.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/18/8cbbe42b113d4e308d11827d518267bb.png
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