/* Replace "dll.h" with the name of your header */
#include "dll.h"
#include <windows.h>
// ANTI DLL INJECTION by _FIL73R_

#include <windows.h>

BOOLEAN BlockAPI (HANDLE,CHAR *,CHAR *);
void AntiInject ();

/****************/
main()
{
   CreateThread (0,0, (LPTHREAD_START_ROUTINE)AntiInject, 0, 0, 0);
   while (TRUE); // loop forever... now to try and inject
}
/****************/



void AntiInject ()
{
   HANDLE hProc = GetCurrentProcess();
   while (TRUE) {
      BlockAPI(hProc, "NTDLL.DLL", "LdrLoadDll");
      Sleep (100);
   }
}

BOOLEAN BlockAPI (HANDLE hProcess, CHAR *libName, CHAR *apiName)
{
 CHAR pRet[]={ 0x31, 0xC0, // XOR eax, eax
              0xC3 };     // RET
   HINSTANCE hLib = NULL;
   VOID *pAddr = NULL;
   BOOL bRet = FALSE;
   DWORD dwRet = 0;

   hLib = LoadLibrary (libName);
   if (hLib) {
       pAddr = (VOID*)GetProcAddress (hLib, apiName);
       if (pAddr) {
           if (WriteProcessMemory (hProcess,
                            (LPVOID)pAddr,
                            (LPCVOID)pRet,
                            sizeof (pRet),
                            &dwRet )) {
              if (dwRet) {
                 bRet = TRUE;
              }
           }
       }
       FreeLibrary (hLib);
   }
   return bRet;
}
/* Replace "dll.h" with the name of your header */
#include "dll.h"
#include <windows.h>
// ANTI DLL INJECTION by _FIL73R_

#include <windows.h>

BOOLEAN BlockAPI (HANDLE,CHAR *,CHAR *);
void AntiInject ();

/****************/
main()
{
   CreateThread (0,0, (LPTHREAD_START_ROUTINE)AntiInject, 0, 0, 0);
   while (TRUE); // loop forever... now to try and inject
}
/****************/



void AntiInject ()
{
   HANDLE hProc = GetCurrentProcess();
   while (TRUE) {
      BlockAPI(hProc, "NTDLL.DLL", "LdrLoadDll");
      Sleep (100);
   }
}

BOOLEAN BlockAPI (HANDLE hProcess, CHAR *libName, CHAR *apiName)
{
 CHAR pRet[]={ 0x31, 0xC0, // XOR eax, eax
              0xC3 };     // RET
   HINSTANCE hLib = NULL;
   VOID *pAddr = NULL;
   BOOL bRet = FALSE;
   DWORD dwRet = 0;

   hLib = LoadLibrary (libName);
   if (hLib) {
       pAddr = (VOID*)GetProcAddress (hLib, apiName);
       if (pAddr) {
           if (WriteProcessMemory (hProcess,
                            (LPVOID)pAddr,
                            (LPCVOID)pRet,
                            sizeof (pRet),
                            &dwRet )) {
              if (dwRet) {
                 bRet = TRUE;
              }
           }
       }
       FreeLibrary (hLib);
   }
   return bRet;
}