diff --git a/CHANGELOG b/CHANGELOG index c15d482fc..81d2a8d61 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -1,5 +1,8 @@ # Nmap Changelog ($Id$); -*-text-*- +o [NSE] Added imap-ntlm-info for extracting hostname and sometimes OS version + from NTLM-auth-enabled IMAP services. [Justin Cacak] + o [NSE] Added http-vuln-cve2013-6786 for detecting a XSS and URL redirection vulnerability in Allegro RomPager web server. Also added a fingerprint for detecting CVE-2014-4019 to http-fingerprints.lua. [Vlatko Kosturjak] diff --git a/scripts/imap-ntlm-info.nse b/scripts/imap-ntlm-info.nse new file mode 100644 index 000000000..674f5f0b9 --- /dev/null +++ b/scripts/imap-ntlm-info.nse @@ -0,0 +1,167 @@ +local comm = require "comm" +local bin = require "bin" +local shortport = require "shortport" +local sslcert = require "sslcert" +local stdnse = require "stdnse" +local base64 = require "base64" +local smbauth = require "smbauth" +local string = require "string" + + +description = [[ +This script enumerates information from remote IMAP services with NTLM +authentication enabled. + +Sending an IMAP NTLM authentication request with null credentials will +cause the remote service to respond with a NTLMSSP message disclosing +information to include NetBIOS, DNS, and OS build version. +]] + + +--- +-- @usage +-- nmap -p 143,993 --script imap-ntlm-info +-- +-- @output +-- 143/tcp open imap +-- | imap-ntlm-info: +-- | Target_Name: ACTIVEIMAP +-- | NetBIOS_Domain_Name: ACTIVEIMAP +-- | NetBIOS_Computer_Name: IMAP-TEST2 +-- | DNS_Domain_Name: somedomain.com +-- | DNS_Computer_Name: imap-test2.somedomain.com +-- | DNS_Tree_Name: somedomain.com +-- |_ Product_Version: 6.1 (Build 7601) +-- +--@xmloutput +-- ACTIVEIMAP +-- ACTIVEIMAP +-- IMAP-TEST2 +-- somedomain.com +-- imap-test2.somedomain.com +-- somedomain.com +-- 6.1 (Build 7601) + + +author = "Justin Cacak" +license = "Same as Nmap--See http://nmap.org/book/man-legal.html" +categories = {"default", "discovery", "safe"} + + +local ntlm_auth_blob = base64.enc( select(2, + smbauth.get_security_blob(nil, nil, nil, nil, nil, nil, nil, + 0x00000001 + -- Negotiate Unicode + 0x00000002 + -- Negotiate OEM strings + 0x00000004 + -- Request Target + 0x00000200 + -- Negotiate NTLM + 0x00008000 + -- Negotiate Always Sign + 0x00080000 + -- Negotiate NTLM2 Key + 0x20000000 + -- Negotiate 128 + 0x80000000 -- Negotiate 56 + )) + ) + +portrule = shortport.port_or_service({ 143, 993 }, { "imap", "imaps" }) + +action = function(host, port) + + local output = stdnse.output_table() + + local starttls = sslcert.isPortSupported(port) + local socket + if starttls then + local status + status, socket = starttls(host, port) + if not status then + -- could be socket problems, but more likely STARTTLS not supported. + stdnse.debug1("starttls error: %s", socket) + end + end + if not socket then + local line, bopt, first_line + socket, line, bopt, first_line = comm.tryssl(host, port, "" , {recv_before=true}) + if not socket then + stdnse.debug1("connection error: %s", line) + return nil + end + end + + socket:send("000b AUTHENTICATE NTLM\r\n") + local status, response = socket:receive() + if not status then + stdnse.debug1("Socket receive failed: %s", response) + return nil + end + if not response then + stdnse.debug1("No response to AUTHENTICATE NTLM") + return nil + end + + socket:send(ntlm_auth_blob .. "\r\n") + status, response = socket:receive() + if not status then + stdnse.debug1("Socket receive failed: %s", response) + return nil + end + if not response then + stdnse.debug1("No response to NTLM challenge") + return nil + end + + socket:close() + + if string.match(response, "^A%d%d%d%d ") then + stdnse.debug2("NTLM auth not supported.") + return nil + end + + -- Continue only if a + response is returned + local response_decoded = string.match(response, "+ (.*)") + if not response_decoded then + stdnse.debug1("Unexpected response to NTLM challenge: %s", response) + return nil + end + + local response_decoded = base64.dec(response_decoded) + + -- Continue only if NTLMSSP response is returned + if not string.match(response_decoded, "^NTLMSSP") then + stdnse.debug1("Unexpected response to NTLM challenge: %s", response) + return nil + end + + -- Leverage smbauth.get_host_info_from_security_blob() for decoding + local ntlm_decoded = smbauth.get_host_info_from_security_blob(response_decoded) + + -- Target Name will always be returned under any implementation + output.Target_Name = ntlm_decoded.target_realm + + -- Display information returned & ignore responses with null values + if ntlm_decoded.netbios_domain_name and #ntlm_decoded.netbios_domain_name > 0 then + output.NetBIOS_Domain_Name = ntlm_decoded.netbios_domain_name + end + + if ntlm_decoded.netbios_computer_name and #ntlm_decoded.netbios_computer_name > 0 then + output.NetBIOS_Computer_Name = ntlm_decoded.netbios_computer_name + end + + if ntlm_decoded.dns_domain_name and #ntlm_decoded.dns_domain_name > 0 then + output.DNS_Domain_Name = ntlm_decoded.dns_domain_name + end + + if ntlm_decoded.fqdn and #ntlm_decoded.fqdn > 0 then + output.DNS_Computer_Name = ntlm_decoded.fqdn + end + + if ntlm_decoded.dns_forest_name and #ntlm_decoded.dns_forest_name > 0 then + output.DNS_Tree_Name = ntlm_decoded.dns_forest_name + end + + if ntlm_decoded.os_major_version then + output.Product_Version = string.format("%d.%d.%d", + ntlm_decoded.os_major_version, ntlm_decoded.os_minor_version, ntlm_decoded.os_build) + end + + return output + +end diff --git a/scripts/script.db b/scripts/script.db index cd4880d8d..6338c4ee0 100644 --- a/scripts/script.db +++ b/scripts/script.db @@ -261,6 +261,7 @@ Entry { filename = "icap-info.nse", categories = { "discovery", "safe", } } Entry { filename = "ike-version.nse", categories = { "default", "discovery", "safe", "version", } } Entry { filename = "imap-brute.nse", categories = { "brute", "intrusive", } } Entry { filename = "imap-capabilities.nse", categories = { "default", "safe", } } +Entry { filename = "imap-ntlm-info.nse", categories = { "default", "discovery", "safe", } } Entry { filename = "informix-brute.nse", categories = { "brute", "intrusive", } } Entry { filename = "informix-query.nse", categories = { "auth", "intrusive", } } Entry { filename = "informix-tables.nse", categories = { "auth", "intrusive", } }