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#!/usr/bin/env python2
# -*- coding: utf-8 -*-
# Auxiliary tool to send custom commands via TRX CTRL interface,
# which may be useful for testing and fuzzing
#
# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
#
# All Rights Reserved
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from copyright import print_copyright
CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
import signal
import getopt
import select
import sys
from udp_link import UDPLink
class Application:
# Application variables
remote_addr = "127.0.0.1"
base_port = 5700
bind_port = 0
fuzzing = False
def __init__(self):
print_copyright(CR_HOLDERS)
self.parse_argv()
# Set up signal handlers
signal.signal(signal.SIGINT, self.sig_handler)
# Init UDP connection
self.ctrl_link = UDPLink(self.remote_addr,
self.base_port + 1, self.bind_port)
# Debug print
print("[i] Init CTRL interface (%s)" \
% self.ctrl_link.desc_link())
def print_help(self, msg = None):
s = " Usage: " + sys.argv[0] + " [options]\n\n" \
" Some help...\n" \
" -h --help this text\n\n"
s += " TRX interface specific\n" \
" -r --remote-addr Set remote address (default %s)\n" \
" -p --base-port Set base port number (default %d)\n" \
" -P --bind-port Set local port number (default: random)\n" \
" -f --fuzzing Send raw payloads (without CMD)\n" \
print(s % (self.remote_addr, self.base_port))
if msg is not None:
print(msg)
def parse_argv(self):
try:
opts, args = getopt.getopt(sys.argv[1:],
"r:p:P:fh",
[
"help",
"fuzzing",
"base-port=",
"bind-port=",
"remote-addr=",
])
except getopt.GetoptError as err:
self.print_help("[!] " + str(err))
sys.exit(2)
for o, v in opts:
if o in ("-h", "--help"):
self.print_help()
sys.exit(2)
elif o in ("-r", "--remote-addr"):
self.remote_addr = v
elif o in ("-p", "--base-port"):
self.base_port = int(v)
elif o in ("-P", "--bind-port"):
self.bind_port = int(v)
elif o in ("-f", "--fuzzing"):
self.fuzzing = True
def run(self):
while True:
self.print_prompt()
# Wait until we get any data on any socket
socks = [sys.stdin, self.ctrl_link.sock]
r_event, w_event, x_event = select.select(socks, [], [])
# Check for incoming CTRL commands
if sys.stdin in r_event:
cmd = sys.stdin.readline()
self.handle_cmd(cmd)
if self.ctrl_link.sock in r_event:
data, addr = self.ctrl_link.sock.recvfrom(128)
sys.stdout.write("\r%s\n" % data.decode())
sys.stdout.flush()
def handle_cmd(self, cmd):
# Strip spaces, tabs, etc.
cmd = cmd.strip().strip("\0")
# Send a command
if self.fuzzing:
self.ctrl_link.send("%s" % cmd)
else:
self.ctrl_link.send("CMD %s\0" % cmd)
def print_prompt(self):
sys.stdout.write("CTRL# ")
sys.stdout.flush()
def sig_handler(self, signum, frame):
print("\n\nSignal %d received" % signum)
if signum is signal.SIGINT:
sys.exit(0)
if __name__ == '__main__':
app = Application()
app.run()
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