Python Banner Grabber

Asked Mar 24 '15 at 15:26

Active Mar 24 '15 at 15:33

Viewed 472 times

I'm trying to make a banner grabber that prompts a user for their ip address and port. What I have so far is:

(Here's a pic of the bannergrabber code if the site shows it weird https://i.stack.imgur.com/PqpJf.jpg and a pic of the hexdump code https://i.stack.imgur.com/Q56gI.jpg)

import socket
import sys

def bannergrabber(ip_address,port):
  try:
    s=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((ip_address,port))
    banner = s.recv(4096)
    print ip_address + ":" + banner
  except
    return

Pretty obvious I'm not sure what I'm doing. I want to establish a TCP connection with the IP and port which is why I have socket.SOCK_STREAM in there. After that I'm printing the output with this hexdump function:

def myhexdump(src, length=16)
  result=[]
  for i in range(0, len(src), length):
    substring = src[i:i+length]
    result.append("%04x" %i)
    hex = "".join("%X" % ord(c) for c in substring)
    result.append("%-*s %s\n" %(length*3, hex, substring))
  print b".join(result)

edited Mar 24 '15 at 15:33

asked Mar 24 '15 at 15:26

99Balloons

"[T]he site shows it weird" if you don't use the code-block ; ) – tamasgal Mar 24 '15 at 15:28
There's something wrong with this line: `hex = ".join("%X" % ord© for c in substring)`; I suspect you meant `"".join(...)`. And you've misspelt `ipaddresss` in the list of arguments for `bannergrabber()`, which means it will throw an error when you try to access `ipaddress`. – alexwlchan Mar 24 '15 at 15:29
Moreover, you forgot a `:` after `except` in `bannergrabber` – ForceBru Mar 24 '15 at 15:30
Yea, there's a unicode character, probably a typo… – tamasgal Mar 24 '15 at 15:30
1

@septi, to my mind, it's difficult to make such a typo using standard QWERTY keyboard – ForceBru Mar 24 '15 at 15:31
Who knows what system/keyboard he uses… ; ) – tamasgal Mar 24 '15 at 15:32
1

It's (c), I changed it up there. – 99Balloons Mar 24 '15 at 15:32
Shall we correct `".join(...)` here? – ForceBru Mar 24 '15 at 15:32
@ForceBru on Mac it's Alt+G – tamasgal Mar 24 '15 at 15:33
@septi, yes, I know, but in that case the OP did it on purpose, I think – ForceBru Mar 24 '15 at 15:34
What's `print b".join(result)`?? Maybe it's `"".join(...)` again? – ForceBru Mar 24 '15 at 15:35

Python Banner Grabber

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