Firefox:: cmder

News

  • 0.11 (03/14/2006): Initial release.
  • 0.12 (03/18/2006): Added icon.
  • (25/01/2008): cmder is no longer maintained

Install cmder-0.12

About

cmder is a very simple Firefox extension that adds a new protocol handler (cmd://) to the browser. It is targeted to the win32 platform.

Usage

After installing cmder you can use urls of the following syntax within Firefox:

cmd://<path to executable>[;<option 1>][;<option 2>]…

For example the following would execute the Group Policy MMC module:

cmd://c:\windows\system32\mmc.exe;c:\windows\system32\gpedit.msc

How

cmder uses the nsIProcess XPCOM to run the executable along with command line options.

Why

This is a very versatile 6kB tool for staging attacks when physical access is an option. Consider the following examples:

Access the System Properties control panel module that may be otherwise unavailable:

cmd://c:\windows\system32\control.exe;sysdm.cpl

Enable execution of cmd.exe:

cmd://c:\windows\system32\reg.exe;
ADD;HKCU\Software\Policies\Microsoft\Windows\System;
/v;DisableCMD;/t;REG_DWORD;/f;/d;0

And then execute it:

cmd://c:\windows\system32\cmd.exe