62 lines
1.9 KiB
Ruby
62 lines
1.9 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 Metasploit < Msf::Post
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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' => 'Write Messages to Users',
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'Description' => %q{
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This module utilizes the wall(1) or write(1) utilities, as appropriate,
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to send messages to users on the target system.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'Jon Hart <jon_hart[at]rapid7.com>' # original metasploit module
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],
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# TODO: is there a way to do this on Windows?
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'Platform' => %w(linux osx unix),
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'SessionTypes' => %w(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('MESSAGE', [false, 'The message to send', '']),
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OptString.new('USERS', [false, 'List of users to write(1) to, separated by commas. ' \
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' wall(1)s to all users by default']),
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OptBool.new('COWSAY', [true, 'Display MESSAGE in a ~cowsay way', false])
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], self.class)
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end
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def users
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datastore['USERS'] ? datastore['USERS'].split(/\s*,\s*/) : nil
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end
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def message
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if datastore['MESSAGE'].blank?
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text = "Hello from a metasploit session at #{Time.now}"
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else
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text = datastore['MESSAGE']
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end
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datastore['COWSAY'] ? Rex::Text.cowsay(text) : text
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end
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def run
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if users
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# this requires that the target user has write turned on
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users.map { |user| cmd_exec("echo '#{message}' | write #{user}") }
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else
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# this will send the messages to all users, regardless of whether or
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# not they have write turned on. If the session is root, the -n will disable
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# the annoying banner
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cmd_exec("echo '#{message}' | wall -n")
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end
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end
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end
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