Add the scripts

mysql-brute
  mysql-datatabase
  mysql-empty-password
  mysql-users
  mysql-variables
and the mysql module

scripts/mysql-variables.nse

@@ -0,0 +1,100 @@
+description = [[
+Attempts to show all variables on the MySQL server
+]]
+
+---
+-- @args mysqluser The username to use for authentication. (If unset it attempts to use credentials found by mysql-brute or mysql-empty-password)
+-- @args mysqlpass The password to use for authentication. (If unset it attempts to use credentials found by mysql-brute or mysql-empty-password)
+--
+-- @output
+-- 3306/tcp open  mysql
+-- | mysql-variables:  
+-- |   auto_increment_increment: 1
+-- |   auto_increment_offset: 1
+-- |   automatic_sp_privileges: ON
+-- |   back_log: 50
+-- |   basedir: /usr/
+-- |   binlog_cache_size: 32768
+-- |   bulk_insert_buffer_size: 8388608
+-- |   character_set_client: latin1
+-- |   character_set_connection: latin1
+-- |   character_set_database: latin1
+-- |   .
+-- |   .
+-- |   .
+-- |   version_comment: (Debian)
+-- |   version_compile_machine: powerpc
+-- |   version_compile_os: debian-linux-gnu
+-- |_  wait_timeout: 28800
+
+author = "Patrik Karlsson"
+license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
+categories = {"discovery", "intrusive"}
+
+require 'shortport'
+require 'stdnse'
+require 'mysql'
+
+dependencies = {"mysql-brute", "mysql-empty-password"}
+
+-- Version 0.1
+-- Created 01/23/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
+
+portrule = shortport.port_or_service(3306, "mysql")
+
+action = function( host, port )
+
+	local socket = nmap.new_socket()
+	local catch = function() socket:close()	end
+	local try = nmap.new_try(catch)
+	local result, response = {}, nil
+	local users = {}
+	local nmap_args = nmap.registry.args
+	local status, rows
+	
+	-- set a reasonable timeout value
+	socket:set_timeout(5000)
+	
+	-- first, let's see if the script has any credentials as arguments?
+	if nmap_args.mysqluser then
+		users[nmap_args.mysqluser] = nmap_args.mysqlpass or ""
+	-- next, let's see if mysql-brute or mysql-empty-password brought us anything
+	elseif nmap.registry.mysqlusers then
+		-- do we have root credentials?
+		if nmap.registry.mysqlusers['root'] then
+			users['root'] = nmap.registry.mysqlusers['root'] 
+		else
+			-- we didn't have root, so let's make sure we loop over them all
+			users = nmap.registry.mysqlusers
+		end
+	-- last, no dice, we don't have any credentials at all
+	else
+		stdnse.print_debug("No credentials supplied, aborting ...")
+		return
+	end
+	
+	--
+	-- Iterates over credentials, breaks once it successfully recieves results
+	--
+	for username, password in pairs(users) do
+				
+		try( socket:connect(host.ip, port.number, "tcp") )
+	
+		response = try( mysql.receiveGreeting( socket ) )
+		status, response = mysql.loginRequest( socket, { authversion = "post41", charset = response.charset }, username, password, response.salt ) 
+	
+		if status and response.errorcode == 0 then
+			status, rows = mysql.sqlQuery( socket, "show variables" )
+			if status then
+				for i=1, #rows do
+					table.insert(result, string.format("%s: %s" , rows[i]['Variable_name'], rows[i]['Value']) )
+				end
+			end
+		end
+		
+		socket:close()
+	end
+	
+	return stdnse.format_output(true, result)	
+
+end