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local mysql = require "mysql"
local nmap = require "nmap"
local shortport = require "shortport"
local stdnse = require "stdnse"
description = [[
Runs a query against a MySQL database and returns the results as a table.
]]
---
-- @usage
-- nmap -p 3306 <ip> --script mysql-query --script-args='query="<query>"[,username=<username>,password=<password>]'
--
-- @output
-- PORT STATE SERVICE
-- 3306/tcp open mysql
-- | mysql-query:
-- | host user
-- | 127.0.0.1 root
-- | localhost debian-sys-maint
-- | localhost root
-- | ubu1110 root
-- |
-- | Query: SELECT host, user FROM mysql.user
-- |_ User: root
--
-- @args mysql-query.query the query for which to return the results
-- @args mysql-query.username (optional) the username used to authenticate to the database server
-- @args mysql-query.password (optional) the password used to authenticate to the database server
-- @args mysql-query.noheaders do not display column headers (default: false)
--
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"auth", "discovery", "safe"}
dependencies = {"mysql-empty-password", "mysql-brute"}
portrule = shortport.port_or_service(3306, "mysql")
local arg_username = stdnse.get_script_args(SCRIPT_NAME .. ".username")
local arg_password = stdnse.get_script_args(SCRIPT_NAME .. ".password") or ""
local arg_query = stdnse.get_script_args(SCRIPT_NAME .. ".query")
local arg_noheaders = stdnse.get_script_args(SCRIPT_NAME .. ".noheaders") or false
local function fail(err) return stdnse.format_output(false, err) end
local function getCredentials()
-- first, let's see if the script has any credentials as arguments?
if ( arg_username ) then
return { [arg_username] = arg_password }
-- 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
return { ['root'] = nmap.registry.mysqlusers['root'] }
else
-- we didn't have root, so let's make sure we loop over them all
return nmap.registry.mysqlusers
end
-- last, no dice, we don't have any credentials at all
end
end
local function mysqlLogin(socket, username, password)
local status, response = mysql.receiveGreeting( socket )
if ( not(status) ) then
return response
end
return mysql.loginRequest( socket, { authversion = "post41", charset = response.charset }, username, password, response.salt )
end
action = function(host, port)
if ( not(arg_query) ) then
stdnse.debug2("No query was given, aborting ...")
return
end
local creds = getCredentials()
if ( not(creds) ) then
stdnse.debug2("No credentials were supplied, aborting ...")
return
end
if ( arg_noheaders == '1' or arg_noheaders == 'true' ) then
arg_noheaders = true
else
arg_noheaders = false
end
local result = {}
local last_error
for username, password in pairs(creds) do
local socket = nmap.new_socket()
if ( not(socket:connect(host, port)) ) then
return fail("Failed to connect to server")
end
local status, response = mysqlLogin(socket, username, password)
if ( status ) then
local status, rs = mysql.sqlQuery( socket, arg_query )
socket:close()
if ( status ) then
result = mysql.formatResultset(rs, { noheaders = arg_noheaders })
result = ("%s\nQuery: %s\nUser: %s"):format(result, arg_query, username)
last_error = nil
break
else
last_error = rs
end
else
socket:close()
end
end
return stdnse.format_output(not last_error, last_error or result)
end
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