Module: Msf::Exploit::Remote::Kerberos::Client::Pac
- Included in:
- Msf::Exploit::Remote::Kerberos::Client
- Defined in:
- lib/msf/core/exploit/remote/kerberos/client/pac.rb
Instance Method Summary collapse
- #build_empty_auth_data ⇒ Object
-
#build_pa_pac_request(opts = {}) ⇒ Rex::Proto::Kerberos::Model::Field::PreAuthDataEntry
Builds a kerberos PA-PAC-REQUEST pre authenticated structure.
-
#build_pac(opts = {}) ⇒ Rex::Proto::Kerberos::Pac::Krb5Pac
Builds a kerberos PACTYPE structure.
-
#build_pac_authorization_data(opts = {}) ⇒ Rex::Proto::Kerberos::Model::AuthorizationData
Builds an kerberos AuthorizationData structure containing a PACTYPE.
Instance Method Details
#build_empty_auth_data ⇒ Object
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# File 'lib/msf/core/exploit/remote/kerberos/client/pac.rb', line 150 def build_empty_auth_data pac_auth_data = Rex::Proto::Kerberos::Model::AuthorizationData.new( elements: [{ type: Rex::Proto::Kerberos::Pac::AD_WIN2K_PAC, data: "\x00" }] ) Rex::Proto::Kerberos::Model::AuthorizationData.new( elements: [{ type: Rex::Proto::Kerberos::Model::AuthorizationDataType::AD_IF_RELEVANT, data: pac_auth_data.encode }] ) end |
#build_pa_pac_request(opts = {}) ⇒ Rex::Proto::Kerberos::Model::Field::PreAuthDataEntry
Builds a kerberos PA-PAC-REQUEST pre authenticated structure
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# File 'lib/msf/core/exploit/remote/kerberos/client/pac.rb', line 18 def build_pa_pac_request(opts = {}) value = opts[:pac_request_value] || false pac_request = Rex::Proto::Kerberos::Model::PreAuthPacRequest.new(value: value) pa_pac_request = Rex::Proto::Kerberos::Model::PreAuthDataEntry.new( type: Rex::Proto::Kerberos::Model::PreAuthType::PA_PAC_REQUEST, value: pac_request.encode ) pa_pac_request end |
#build_pac(opts = {}) ⇒ Rex::Proto::Kerberos::Pac::Krb5Pac
Builds a kerberos PACTYPE structure
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# File 'lib/msf/core/exploit/remote/kerberos/client/pac.rb', line 48 def build_pac(opts = {}) user_name = opts[:client_name] || '' user_id = opts[:user_id] || Rex::Proto::Kerberos::Pac::DEFAULT_ADMIN_RID primary_group_id = opts[:group_id] || Rex::Proto::Kerberos::Pac::DOMAIN_USERS group_ids = opts[:group_ids] || [Rex::Proto::Kerberos::Pac::DOMAIN_USERS] extra_sids = opts[:extra_sids] || [] domain_name = opts[:realm] || '' domain_id = opts[:domain_id] || Rex::Proto::Kerberos::Pac::NT_AUTHORITY_SID logon_time = opts[:logon_time] || Time.now checksum_type = opts[:checksum_type] || Rex::Proto::Kerberos::Crypto::Checksum::RSA_MD5 ticket_checksum = opts[:ticket_checksum] || nil is_golden = opts.fetch(:is_golden) { true } validation_info = Rex::Proto::Kerberos::Pac::Krb5ValidationInfo.new( logon_time: logon_time, effective_name: user_name, user_id: user_id, primary_group_id: primary_group_id, logon_domain_name: domain_name, logon_domain_id: domain_id, full_name: '', logon_script: '', profile_path: '', home_directory: '', home_directory_drive: '', logon_server: '' ) validation_info.group_ids = group_ids if extra_sids && extra_sids.length > 0 validation_info.extra_sids = extra_sids.map do |sid| { sid: sid, attributes: Rex::Proto::Kerberos::Pac::SE_GROUP_ALL } end end logon_info = Rex::Proto::Kerberos::Pac::Krb5LogonInformation.new( data: validation_info ) client_info = Rex::Proto::Kerberos::Pac::Krb5ClientInfo.new( client_id: logon_time, name: user_name ) if is_golden pac_requestor = Rex::Proto::Kerberos::Pac::Krb5PacRequestor.new( user_sid: "#{domain_id}-#{user_id}" ) pac_attributes = Rex::Proto::Kerberos::Pac::Krb5PacAttributes.new end server_checksum = Rex::Proto::Kerberos::Pac::Krb5PacServerChecksum.new( signature_type: checksum_type ) priv_srv_checksum = Rex::Proto::Kerberos::Pac::Krb5PacPrivServerChecksum.new( signature_type: checksum_type ) pac_elements = [ logon_info, client_info ] if is_golden # These PAC elements are required for golden tickets in post-October 2022 systems pac_elements.append( pac_requestor, pac_attributes) end pac_elements.append( server_checksum, priv_srv_checksum ) pac_elements << ticket_checksum unless ticket_checksum.nil? pac_type = Rex::Proto::Kerberos::Pac::Krb5Pac.new pac_type.assign(pac_elements: pac_elements) pac_type.sign!(service_key: opts[:checksum_enc_key]) pac_type end |
#build_pac_authorization_data(opts = {}) ⇒ Rex::Proto::Kerberos::Model::AuthorizationData
Builds an kerberos AuthorizationData structure containing a PACTYPE
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# File 'lib/msf/core/exploit/remote/kerberos/client/pac.rb', line 137 def (opts = {}) pac = opts[:pac] || build_pac(opts) pac_auth_data = Rex::Proto::Kerberos::Model::AuthorizationData.new( elements: [{ type: Rex::Proto::Kerberos::Pac::AD_WIN2K_PAC, data: pac.to_binary_s}] ) = Rex::Proto::Kerberos::Model::AuthorizationData.new( elements: [{ type: Rex::Proto::Kerberos::Model::AuthorizationDataType::AD_IF_RELEVANT, data: pac_auth_data.encode }] ) end |