description = [[
Performs password guessing against Microsoft SQL Server (ms-sql).
]]
author = "Patrik Karlsson"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"auth", "intrusive"}
require 'shortport'
require 'stdnse'
require 'mssql'
require 'unpwdb'
---
-- @output
-- PORT STATE SERVICE
-- 1433/tcp open ms-sql-s
-- | ms-sql-brute:
-- | webshop_reader:secret => Login Success
-- | testuser:secret1234 => Must change password at next logon
-- |_ lordvader:secret1234 => Login Success
-- Version 0.1
-- Created 01/17/2010 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
portrule = shortport.port_or_service(1433, "ms-sql-s")
action = function( host, port )
local result, response, status = {}, nil, nil
local valid_accounts = {}
local usernames, passwords
local username, password
local helper = mssql.Helper:new()
status, usernames = unpwdb.usernames()
if ( not(status) ) then
return " \n\nFailed to load usernames.lst"
end
status, passwords = unpwdb.passwords()
if ( not(status) ) then
return " \n\nFailed to load usernames.lst"
end
for username in usernames do
for password in passwords do
status, result = helper:Connect(host, port)
if( not(status) ) then
return " \n\n" .. result
end
stdnse.print_debug( "Trying %s/%s ...", username, password )
status, result = helper:Login( username, password, "tempdb", host.ip )
helper:Disconnect()
if ( status ) or ( "Must change password at next logon" == result ) then
-- Add credentials for other mysql scripts to use
table.insert( valid_accounts, string.format("%s:%s => %s", username, password:len()>0 and password or "<empty>", result ) )
-- don't add accounts that need to change passwords to the registry
if ( result ~= "Login Success") then
break
end
if nmap.registry.mssqlusers == nil then
nmap.registry.mssqlusers = {}
end
nmap.registry.mssqlusers[username]=password
break
end
end
passwords("reset")
end
local output = stdnse.format_output(true, valid_accounts)
return output
end
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