xtelnet

This is an easy to use telnet module to interact with a remote system smoothly over this protocol! It is a very minimalistic alterative to "telnetlib". xtelnet is a powerful and user-friendly Python library designed for managing Telnet sessions with ease and efficiency. With its intuitive interface and robust functionality, xtelnet simplifies the process of interacting with Telnet servers, offering a range of features for seamless communication. xtelnet offers a comprehensive solution for Telnet communication, providing developers with the tools they need to effectively manage Telnet sessions and interact with remote systems. Whether you're a seasoned developer or new to Telnet protocols, xtelnet empowers you to achieve your goals efficiently and reliably.

Why should I use xtelnet?

• Easy to use and stable
• Simple Authentication mechanism
• Handle telnet negotiations automatically for you
• Compatible with python 2 and 3
• Set custom Telnet negotiation options
• parse commands output and returns only necessary output ( command's ouput, nothing extra )
• Compatible with almost all servers when it comes to authentication and executing the commands
• Available Command line tool
• Thread-safe: if the session is shared among threads to execute commands, the commands will be executed one by one
• Supports running multiple sessions concurrently
• Can connect simultaneously and run in parallel the same command on: single or some or all connected hosts
• Allow reconnect after closing the connection
• Allow escape ANSI characters
• Grab banners
• Available "ping" function to use if you want to keep the connection open
• Supports SOCKS 4 / 5 proxies
• Supports SSL
• Supports sending JSON data

Install :

pip install xtelnet

or

pip3 install xtelnet

Usage on a script :

import xtelnet
t=xtelnet.Telnet_Session()
ip='192.168.0.32'#just an example
# if you are using "stupid" tcp servers, just set "allow_raw_tcp" parameter in "connect" method to true and it will stream everything over TCP
t.connect(ip, username='root',password='toor',port=23,timeout=5)
output1=t.execute('echo ala_is_king',timeout=5,buffer_read_timeout=2,remove_prompt_from_output=True,max_empty_buffers=3)
print(output1)
output2=t.execute('cd / && ls')
print(output2)
output3=t.execute('cd / && ls',read_until_match='expected_string_here')
print(output3)
t.close()#close the connection but keep the connection string to do reconnect later
t.enable_debug()# enable debug mode
t.disable_debug()# disable debug mode
t.reconnect()#reconnect to the host with the previous parameters
t.ping()#send new line to the host to keep the connectio open
t.destroy()#close the connection and remove the connection string totally, after this you can't do "reconnect"

t.connect('114.35.81.134',proxy_type=5,proxy_host='localhost',proxy_port=9150,proxy_username='user',proxy_password='pass')#use SOCKS5 proxy to connect, set 'proxy_type' to 4 to use SOCKS4 

The multi_session helps you in controlling multiple telnet sessions in parallel:

import xtelnet
t=xtelnet.Multi_Telnet_Session()
ip1='192.168.0.32'#just an example
ip2='192.168.0.4'
ip3='192.168.0.10'
ip4='192.168.0.11'
ip5='192.168.0.12'
host1=xtelnet.Telnet_Session.setup_host_configs(ip1, username='root',password='toor',port=23,timeout=5)
host2=xtelnet.Telnet_Session.setup_host_configs(ip2, username='root',password='toor',port=23,timeout=5)
host3=xtelnet.Telnet_Session.setup_host_configs(ip3, username='root',password='toor',port=23,timeout=5)
host4=xtelnet.Telnet_Session.setup_host_configs(ip4, username='root',password='toor',port=23,timeout=5)
host5=xtelnet.Telnet_Session.setup_host_configs(ip5, username='root',password='toor',port=23,timeout=5)
t.connect([host1,host2,host3,host4,host5])
print(t.sessions)#to see the connected hosts
c=t.all_execute('echo "ala is king"')#execute this command on all hosts
print(c)#print output
c=t.some_execute([ip1,ip2],'echo "ala is king"')#execute this command on some hosts
print(c)
c=t.host_execute(ip1,'echo "ala is king"')#execute this command on this host
print(c)
t.disconnect_host(ip1)#to disconnect of this host
t.disconnect_some([ip2,ip3])#to disconnect of those hosts
t.disconnect_all()#to disconnect of all hosts
t.destroy()#disconnect from all hosts

Usage from command line :

xtelnet host [options...]
options:
-username : set a username (required if username is needed to access)
-password : set a password (required if password is needed to access)
-port : (23 by default) set port
-timeout : (5 by default) set timeout
--add-command : a command to execute after login and disable shell
--set-newline : ("\n" by default) set a new line indecator("\n" or "\r\n")
--no-shell : (enabled by default if no commands are specified) disable shell after authentication
--read-retries : times to retry reading the response if it takes too long
--help : get this help message
examples:
xtelnet 127.0.0.1 -username root -password root --add-command "echo ala" --add-command "dir"
xtelnet 127.0.0.1 -username root -password root -port 2323 -timeout 5
xtelnet 127.0.0.1 -username root -password root -port 2323 -timeout 5 --no-shell

Xtelnet can be used to grab banners:

import xtelnet
telnet_banner=xtelnet.Socket_Connection.get_banner("localhost",port=23)#suppose you have telnet server running on that port
http_banner=xtelnet.Socket_Connection.get_banner("www.google.com",port=80,payload="GET / HTTP/1.1\r\nHost: www.google.com\r\n\r\n")#we send a http request as a payload to get the response
ssh_banner=xtelnet.Socket_Connection.get_banner("localhost",port=22)

Xtelnet can escape all ANSI characters :

import xtelnet
escaped_string=xtelnet.Socket_Connection.escape_ansi( unescaped_string )