Can you post the Netcat Code? There is an issue with it in the book and it might be helpful if it were here.

When I run pic_carver.py the packet[TCP].payload returns a byte object, like b'\r\n' and so on. str(packet[TCP].payload) becomes '\\r\\n' and thus the following if-conditions evaluate to False.

Also, if the pictures and faces directories do not exists the output fails.

I have made some changes so it runs for me, but I'm a junior python coder so there might be some un-pythonic things going on. Please have a look.

And Thank you for the nice upload.
pic_carver.py.gz

Description

An exception occurs in chapter02/bhnet.py in the function client_sender on the second call to client.send() in the sender while-loop. The exception due to a broken pipe.

Reproduction Steps

The bug was found by running chapter02/tcp-server.py and connecting to it with chapter02/bhnet.py:

$ python3 ./bhpnet.py -t 127.0.0.1 -p 9999
Hallo [Ctrl-D]
ACK! Test1
 Test2
[*] Exception! Exiting.
[*] Caught exception socket.error: [Errno 32] Broken pipe

On the server side:

$ python3 ./tcp-server.py 
[*] Listening on 0.0.0.0:9999
[*] Accepted connection from: 127.0.0.1:50890
[*] Received: b'Hallo\n'
('127.0.0.1', 50890)

Note that the outer while-loop (line 128 - 148) is run through twice after the initial successful sending of the buffer to the server but without ever sending data again. The expected behavior is that "Test1" would be sent to the server at the end of one loop cycle and "Test2" would be sent at the end of the next loop cycle. However, the server never receives even "Test1".

Feels like this file is calling time.sleep function without ever importing time modules (two time, on row 62 and 119)

I tried locally and I was able to fix adding "import time" on row 4.

i had a question i wanted to ask if we send the data to localhost at port 80 is there a response we are suppose to get? if yes it doesn't seem to work for me.i am not getting any response

.

In the README.me file, there is a link to the book on Internet Archive. The link now forwards to a removed resource, and no explanation is given on why it was removed.

The original code that Blackhat Python used was python 2.7. Now i get an error when installing github3.py

on python3. How do we resolve this issue?

Traceback (most recent call last):
File "C:\Users\MMR3\Documents\Python\BlackHatPython\netcat.py", line 126, in
nc = NetCat(args, buffer.encode())
File "C:\Users\MMR3\Documents\Python\BlackHatPython\netcat.py", line 24, in init
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR)
TypeError: setsockopt() takes exactly 3 arguments (2 given)

I'm trying to debug an error with the pipelined argument example in chapter two echo -ne "GET / HTTP/1.1\r\nHost: reachtim.com\r\n\r\n" |python ./netcat.py -t reachtim.com -p 80 but could not find a netcat.py file to compare in this repository.

Hi. I have been comparing your code with other python 3 rewrites and the code in the prerelease pdf for the new 2nd edition of Black Hat Python. I noticed that in your chapter 2 versions of the udp-client.py and tcp-client.py files you don't call client.close() at the end of the file. I know the call is technically not needed as this programs are ending anyway. However since they are intended to be examples of how to write network code shouldn't the client.close() still be included?