Module: Msf::Payload::Aix

Defined in:
lib/msf/core/payload/aix.rb

Overview

This class is here to implement advanced features for AIX-based payloads. AIX payloads are expected to include this module if they want to support these features.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#aix ⇒ Object (protected)

Returns the value of attribute aix.



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# File 'lib/msf/core/payload/aix.rb', line 185

def aix
  @aix
end

#cal_accept ⇒ Object (protected)

Returns the value of attribute cal_accept.



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# File 'lib/msf/core/payload/aix.rb', line 188

def cal_accept
  @cal_accept
end

#cal_bind ⇒ Object (protected)

Returns the value of attribute cal_bind.



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# File 'lib/msf/core/payload/aix.rb', line 189

def cal_bind
  @cal_bind
end

#cal_close ⇒ Object (protected)

Returns the value of attribute cal_close.



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# File 'lib/msf/core/payload/aix.rb', line 192

def cal_close
  @cal_close
end

#cal_connect ⇒ Object (protected)

Returns the value of attribute cal_connect.



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# File 'lib/msf/core/payload/aix.rb', line 191

def cal_connect
  @cal_connect
end

#cal_execve ⇒ Object (protected)

Returns the value of attribute cal_execve.



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# File 'lib/msf/core/payload/aix.rb', line 186

def cal_execve
  @cal_execve
end

#cal_getpeername ⇒ Object (protected)

Returns the value of attribute cal_getpeername.



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# File 'lib/msf/core/payload/aix.rb', line 187

def cal_getpeername
  @cal_getpeername
end

#cal_kfcntl ⇒ Object (protected)

Returns the value of attribute cal_kfcntl.



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# File 'lib/msf/core/payload/aix.rb', line 193

def cal_kfcntl
  @cal_kfcntl
end

#cal_socket ⇒ Object (protected)

Returns the value of attribute cal_socket.



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# File 'lib/msf/core/payload/aix.rb', line 190

def cal_socket
  @cal_socket
end

Instance Method Details

#generate(*args) ⇒ Object

Overload the generate() call to prefix our stubs and detect AIX version



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# File 'lib/msf/core/payload/aix.rb', line 32

def generate(*args)
  @aix = datastore['AIX']

  #if not assoc_exploit.nil?
  #	note = find_note(assoc_exploit.rhost, 'AIX')

  #	if not note.nil?
  #		@aix = note['data']
  #	end
  #end

  if (not @aix)
    raise RuntimeError, 'AIX version is not set!'
  end

  #
  # NOTE:
  #
  # To add a syscall set, add a aix_XXXX_syscalls hash as seen below,
  # and add a line to the versions hash using that version.
  #

  aix_614_syscalls = {
    :__NR_execve      => 7,
    :__NR_getpeername => 211,
    :__NR_accept      => 237,
    :__NR_listen      => 240,
    :__NR_bind        => 242,
    :__NR_socket      => 243,
    :__NR_connect     => 244,
    :__NR_close       => 278,
    :__NR_kfcntl      => 658
  }

  aix_613_syscalls = {
    :__NR_execve      => 7,
    :__NR_getpeername => 205,
    :__NR_accept      => 232,
    :__NR_listen      => 235,
    :__NR_bind        => 237,
    :__NR_socket      => 238,
    :__NR_connect     => 239,
    :__NR_close       => 272,
    :__NR_kfcntl      => 644
  }

  aix_612_syscalls = {
    :__NR_execve      => 7,
    :__NR_getpeername => 205,
    :__NR_accept      => 232,
    :__NR_listen      => 235,
    :__NR_bind        => 237,
    :__NR_socket      => 238,
    :__NR_connect     => 239,
    :__NR_close       => 272,
    :__NR_kfcntl      => 635
  }

  aix_611_syscalls = {
    :__NR_execve      => 7,
    :__NR_getpeername => 202,
    :__NR_accept      => 229,
    :__NR_listen      => 232,
    :__NR_bind        => 234,
    :__NR_socket      => 235,
    :__NR_connect     => 236,
    :__NR_close       => 269,
    :__NR_kfcntl      => 614
  }

  aix_610_syscalls = {
    :__NR_execve      => 6,
    :__NR_getpeername => 203,
    :__NR_accept      => 229,
    :__NR_listen      => 232,
    :__NR_bind        => 234,
    :__NR_socket      => 235,
    :__NR_connect     => 236,
    :__NR_close       => 269,
    :__NR_kfcntl      => 617
  }

  aix_53x_syscalls = {
    :__NR_execve      => 6,
    :__NR_getpeername => 198,
    :__NR_accept      => 214,
    :__NR_listen      => 215,
    :__NR_bind        => 216,
    :__NR_socket      => 217,
    :__NR_connect     => 218,
    :__NR_close       => 245,
    :__NR_kfcntl      => 493
  }

  aix_51_syscalls = {
    :__NR_execve      => 5,
    :__NR_getpeername => 122,
    :__NR_accept      => 138,
    :__NR_listen      => 139,
    :__NR_bind        => 140,
    :__NR_socket      => 141,
    :__NR_connect     => 142,
    :__NR_close       => 160,
    :__NR_kfcntl      => 322
  }

  versions = {
    '6.1.4'  => aix_614_syscalls,
    '6.1.3'  => aix_613_syscalls,
    '6.1.2'  => aix_612_syscalls,
    '6.1.1'  => aix_611_syscalls,
    '6.1.0'  => aix_610_syscalls,
    '5.3.10' => aix_53x_syscalls,
    '5.3.9'  => aix_53x_syscalls,
    '5.3.8'  => aix_53x_syscalls,
    '5.3.7'  => aix_53x_syscalls,
    '5.1'    => aix_51_syscalls
  }

  if (not versions[@aix])
    # Dynamically build the support version array :)
    supported = versions.sort.reverse.map { |k,v| k.to_s }.join(', ')
    raise RuntimeError, "Invalid AIX version: \"#{@aix}\".  Supported versions: #{supported}"
  else
    syscalls = versions[@aix]
  end

  __CAL = 2047
  __NC_execve      = -(__CAL - syscalls[:__NR_execve])
  __NC_getpeername = -(__CAL - syscalls[:__NR_getpeername])
  __NC_accept      = -(__CAL - syscalls[:__NR_accept])
  __NC_listen      = -(__CAL - syscalls[:__NR_listen])
  __NC_bind        = -(__CAL - syscalls[:__NR_bind])
  __NC_socket      = -(__CAL - syscalls[:__NR_socket])
  __NC_connect     = -(__CAL - syscalls[:__NR_connect])
  __NC_close       = -(__CAL - syscalls[:__NR_close])
  __NC_kfcntl      = -(__CAL - syscalls[:__NR_kfcntl])

  cal = "\x38\x5d"
  @cal_execve      = cal + [__NC_execve].pack('n')
  @cal_getpeername = cal + [__NC_getpeername].pack('n')
  @cal_accept      = cal + [__NC_accept].pack('n')
  @cal_listen      = cal + [__NC_listen].pack('n')
  @cal_bind        = cal + [__NC_bind].pack('n')
  @cal_socket      = cal + [__NC_socket].pack('n')
  @cal_connect     = cal + [__NC_connect].pack('n')
  @cal_close       = cal + [__NC_close].pack('n')
  @cal_kfcntl      = cal + [__NC_kfcntl].pack('n')

  return ''
end

#initialize(info = {}) ⇒ Object

This mixin is chained within payloads that target the AIX platform. It provides special prepends, to support things like chroot and setuid and detect AIX version.



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# File 'lib/msf/core/payload/aix.rb', line 17

def initialize(info = {})
  ret = super(info)

  register_options(
    [
      Msf::OptString.new('AIX', [ true, 'IBM AIX Version', '6.1.4' ]),
    ], Msf::Payload::Aix)

  ret
end