CmpOpenFileWithExtremePrejudice

NTSTATUS __fastcall CmpOpenFileWithExtremePrejudice(
        VOID **FileHandle,
        _OBJECT_ATTRIBUTES *ObjectAttributes,
        _IO_STATUS_BLOCK *IoStatusBlock,
        UINT64 FileAttributes,
        UINT64 a5){
  int v7; 
  NTSTATUS result; 
  NTSTATUS v10; 
  UINT64 ShareAccess; 
  UINT64 ShareAccessa; 
  UINT64 OpenOptions; 
  UINT64 OpenOptionsa; 
  UINT64 v15; 
  UINT64 CreateDisposition; 
  UINT64 CreateOptions; 
  UINT64 v18; 
  VOID *FileHandlea; 
  _IO_STATUS_BLOCK IoStatusBlocka; 
  _FILE_BASIC_INFORMATION FileInformation; 

  FileHandlea = 0i64;
  *FileHandle = 0i64;
  v7 = FileAttributes;
  IoStatusBlocka = 0i64;
  memset(&FileInformation, 0, sizeof(FileInformation));
  result = ZwQueryAttributesFile(ObjectAttributes, &FileInformation);
  if( result >= 0 )
  {
    FileInformation.FileAttributes &= ~1u;
    LODWORD(OpenOptions) = 0x4000;
    LODWORD(ShareAccess) = 7;
    result = ZwOpenFile(&FileHandlea, 0x100ui64, ObjectAttributes, &IoStatusBlocka, ShareAccess, OpenOptions);
    if( result >= 0 )
    {
      LODWORD(ShareAccessa) = 4;
      v10 = ZwSetInformationFile(
              (UINT64)FileHandlea,
              (UINT64)&IoStatusBlocka,
              (INT8 *)&FileInformation,
              0x28ui64,
              ShareAccessa);
      ZwClose((_HANDLE)FileHandlea);
      if( v10 >= 0 )
      {
        LODWORD(v18) = 0;
        LODWORD(CreateOptions) = a5;
        LODWORD(CreateDisposition) = 1;
        LODWORD(v15) = 0;
        LODWORD(OpenOptionsa) = v7;
        return ZwCreateFile(
                 FileHandle,
                 3ui64,
                 ObjectAttributes,
                 IoStatusBlock,
                 0i64,
                 OpenOptionsa,
                 v15,
                 CreateDisposition,
                 CreateOptions,
                 0i64,
                 v18);
      }
      else
      {
        return v10;
      }
    }
  }
  return result;
}

Referenced by: