> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/zh/web-vulnerabilities/json-web-token-jwt-attack/jwt-pivoting-user-pentesting-web.md).
# JWT 用户横向移动
## JWT 空值：
我们认证为一个 **普通用户** “user” 具有权限 *访客*:
我们观察到我们有一个 **会话 Cookie** 在 JWT 中：
从 **终端**，我们翻译 en **base64** 更改编号标识后，对“Header”和“Payload”进行 en，然后我们移除“Verify signature”：
我们粘贴新的 **会话 Cookie** 并获得权限 *普通*:
## JWT 密钥
在测试 JWT 空值方法时，这 **将不起作用** 并且该尝试会失败。
思路是在 **验证签名**中尝试密码，通过暴力破解或一些逆向工程来获取该 cookie：
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