user mode application_sourcecode

#include <stdio.h>
#include <Windows.h>

typedef struct _INJECT_INFO
{
    HANDLE ProcessId;
    wchar_t DllName[1024];
}INJECT_INFO,*PINJECT_INFO;

int wmain(int argc,wchar_t* argv[])
{
    HANDLE hFile;
    DWORD write;

    INJECT_INFO InjectInfo;

    if(argc<3)
    {
        printf("\nUsage: kinject [PID] [DLL name]\n");
        return -1;
    }

    hFile=CreateFile(L"\\\\.\\KeInject",GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);

    if(hFile==INVALID_HANDLE_VALUE)
    {
        printf("\nError: Unable to connect to the driver (%d)\n",GetLastError());
        return -1;
    }

    memset(&InjectInfo,0,sizeof(INJECT_INFO));

    InjectInfo.ProcessId=(HANDLE)wcstoul(argv[1],NULL,0);
    wcscpy(InjectInfo.DllName,argv[2]);

    if(!WriteFile(hFile,&InjectInfo,sizeof(INJECT_INFO),&write,NULL))
    {
        printf("\nError: Unable to write data to the driver (%d)\n",GetLastError());

        CloseHandle(hFile);
        return -1;
    }

    CloseHandle(hFile);
    return 0;
}