Send TCP packets

[sergylm]

Hello,

I am trying to use a socks5 proxy to send TCP crafted packets instead of HTTP request. I have tried every single possible configuration, but I always receive as response b''.

The same TCP packets works fine without proxy, so I don't know what to do.

[woo200]

Please send a snippet of the code you're using. I dont know what library you are using so I cannot help until I know,

[sergylm]

s = sockslib.SocksSocket()
s.set_proxy(("PROXY IP", PROXY PORT), sockslib.Socks.SOCKS5)
s.connect(("TARGET IP", TARGET PORT))
s.sendall(b'Client Hello Packets')
s.sendall(b'Init Handshake Packets')
data = s.recv(4096)
print("\n")
print(data)

Always return b'', when sending the same packets withour proxy it returns the handshake keys.

[woo200]

Go ahead and add
s = sockslib.SocksSocket(debug=True)
And send me the output please.

Have you tried using a different proxy?

[sergylm]

[DEBUG/INFO] Connecting to proxy: ('PROXY IP', PROXY PORT)
[DEBUG/INFO] Connected, Handshaking...
[DEBUG/INFO] (SOCKS5) Sending authentication request...
[DEBUG/INFO] (SOCKS5) Server chose authentication method: [0]
[DEBUG/INFO] (SOCKS5) Sending connection request...
[DEBUG/INFO] (SOCKS5) [TCP] Server accepted connection. (*0.0.0.0:0)


b''

Here is the DEBUG info.

This same proxy and code works fine with HTTP requests, althought I have tried with different proxies and same response...

I don't know if the connection is not maintained (stream) and closes automatically before receiving the response from the target server?