mirror of
https://github.com/nmap/nmap.git
synced 2025-12-06 04:31:29 +00:00
115 lines
4.3 KiB
Lua
115 lines
4.3 KiB
Lua
-- Arturo 'Buanzo' Busleiman <buanzo@buanzo.com.ar> / www.buanzo.com.ar / linux-consulting.buanzo.com.ar
|
|
-- Same as Nmap--See http://nmap.org/book/man-legal.html file for licence details
|
|
-- This is version 20070516.
|
|
-- Changelog:
|
|
-- * I changed it to the "demo" category until we figure out what
|
|
-- to do about using real hostnames. -Fyodor
|
|
-- + Added some strings to return in different places.
|
|
-- * Changed "HELO www.[ourdomain]" to "EHLO [ourdomain]".
|
|
-- * Fixed some API differences
|
|
-- * The "ourdomain" variable's contents are used instead of hardcoded "insecure.org". Settable by the user.
|
|
-- * Fixed tags -> categories (reported by Jason DePriest to nmap-dev)
|
|
|
|
id="Open Relay SMTP"
|
|
description="Checks to see if a SMTP server is an open relay"
|
|
categories = {"demo"}
|
|
|
|
require "shortport"
|
|
|
|
ourdomain="scanme.org"
|
|
|
|
portrule = shortport.port_or_service(25, "smtp")
|
|
|
|
action = function(host, port)
|
|
local socket = nmap.new_socket()
|
|
local result
|
|
local status = true
|
|
|
|
local mailservername
|
|
local tor = {}
|
|
local i
|
|
|
|
socket:set_timeout(10000);
|
|
socket:connect(host.ip, port.number, port.protocol)
|
|
|
|
status, result = socket:receive_lines(1)
|
|
|
|
if (result == "TIMEOUT") then
|
|
socket:close()
|
|
return "Timeout. Try incresing settimeout, or enhance this."
|
|
end
|
|
|
|
-- Introduce ourselves...
|
|
socket:send("EHLO "..ourdomain.."\r\n")
|
|
status, result = socket:receive_lines(1)
|
|
|
|
-- close socket and return if there's an smtp status code != 250
|
|
if not string.match(result, "^250") then
|
|
socket:close()
|
|
return "EHLO with errors or timeout. Enable --script-trace to see what is happening."
|
|
end
|
|
|
|
mailservername = string.sub(result, string.find(result, '([.%w]+)',4))
|
|
|
|
-- read the rest of the response, if any
|
|
|
|
while true do
|
|
status, result = socket:receive_lines(1)
|
|
if not status then
|
|
break
|
|
end
|
|
end
|
|
|
|
-- Now that we have the mailservername, fill in the tor table
|
|
tor[0] = {f = "MAIL FROM:<spamtest@"..ourdomain..">",t="RCPT TO:<relaytest@"..ourdomain..">"}
|
|
tor[1] = {f = "MAIL FROM:<>",t="RCPT TO:<relaytest@"..ourdomain..">"}
|
|
tor[2] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<relaytest@"..ourdomain..">"}
|
|
tor[3] = {f = "MAIL FROM:<spamtest@" .. mailservername .. ">",t="RCPT TO:<relaytest@"..ourdomain..">"}
|
|
tor[4] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<relaytest%"..ourdomain.."@[" .. host.ip .. "]>"}
|
|
tor[5] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<relaytest%"..ourdomain.."@" .. mailservername .. ">"}
|
|
tor[6] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<\"relaytest@"..ourdomain.."\">"}
|
|
tor[7] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<\"relaytest%"..ourdomain.."\">"}
|
|
tor[8] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<relaytest@"..ourdomain.."@[" .. host.ip .. "]>"}
|
|
tor[9] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<\"relaytest@"..ourdomain.."\"@[" .. host.ip .. "]>"}
|
|
tor[10] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<relaytest@"..ourdomain.."@" .. mailservername .. ">"}
|
|
tor[11] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<@[" .. host.ip .. "]:relaytest@"..ourdomain..">"}
|
|
tor[12] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<@" .. mailservername .. ":relaytest@"..ourdomain..">"}
|
|
tor[13] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<"..ourdomain.."!relaytest>"}
|
|
tor[14] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<"..ourdomain.."!relaytest@[" .. host.ip .. "]>"}
|
|
tor[15] = {f = "MAIL FROM:<spamtest@[" .. host.ip .. "]>",t="RCPT TO:<"..ourdomain.."!relaytest@" .. mailservername .. ">"}
|
|
|
|
|
|
i = -1
|
|
while true do
|
|
i = i+1
|
|
if i > table.getn(tor) then break end
|
|
|
|
-- for debugging, uncomment next line
|
|
-- print (tor[i]["f"] .. " -> " .. tor[i]["t"])
|
|
|
|
-- first, issue a RSET
|
|
socket:send("RSET\r\n")
|
|
status, result = socket:receive_lines(1)
|
|
if not string.match(result, "^250") then
|
|
socket:close()
|
|
return
|
|
end
|
|
|
|
-- send MAIL FROM....
|
|
socket:send(tor[i]["f"].."\r\n")
|
|
status, result = socket:receive_lines(1)
|
|
if string.match(result, "^250") then
|
|
-- if we get a 250, then continue with RCPT TO:
|
|
socket:send(tor[i]["t"].."\r\n")
|
|
status, result = socket:receive_lines(1)
|
|
if string.match(result, "^250") then
|
|
socket:close()
|
|
return "OPEN RELAY found."
|
|
end
|
|
end
|
|
end
|
|
|
|
socket:close()
|
|
return
|
|
end
|