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Linux入侵踪迹隐藏攻略(3)

时间:2010-04-11 12:38来源:虫虫技术在线收集整理 作者:虫虫编辑 点击:
#e# ===redir==== 同样也是一个端口重定向工具 [root@security-lab1 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:13:72:4F:11:45 inet addr:10.0.64.36 Bcast:10.0.64.255 Mask:255.255.255.0 ine
#e#

===redir====

  同样也是一个端口重定向工具

  [root@security-lab1 ~]# ifconfig

  eth0 Link encap:Ethernet HWaddr 00:13:72:4F:11:45

  inet addr:10.0.64.36 Bcast:10.0.64.255 Mask:255.255.255.0

  inet6 addr: fe80::213:72ff:fe4f:1145/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:6299748 errors:0 dropped:0 overruns:0 frame:0

  TX packets:1015669 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:666609648 (635.7 MiB) TX bytes:763775653 (728.3 MiB)

  Base address:0xecc0 Memory:fe6e0000-fe700000

  [root@security-lab1 ~]# uname -a

  Linux security-lab1 2.6.9-22.ELsmp #1 SMP Mon Sep 19 18:32:14 EDT 2005 i686 i686 i386 GNU/Linux

  [root@security-lab1 ~]# cat /etc/issue

  Red Hat Enterprise Linux AS release 4 (Nahant Update 2)

  Kernel \r on an \m

  [root@security-lab1 ~]# which redir

  /usr/bin/redir

  [root@security-lab1 ~]# nc -vv localhost 22

  localhost.localdomain [127.0.0.1] 22 (ssh) open

  SSH-1.99-OpenSSH_3.9p1

  sent 0, rcvd 23

  [root@security-lab1 ~]# nc -vv -n 10.0.76.109 22 =====>远程主机,我们要重定向的端口

  (UNKNOWN) [10.0.76.109] 22 (?) open

  SSH-2.0-OpenSSH_4.0

  sent 0, rcvd 20

  [root@security-lab1 ~]# netstat -antp

  Active Internet connections (servers and established)

  Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

  tcp 0 0 0.0.0.0:32768 0.0.0.0:* LISTEN 2205/rpc.statd

  tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 2185/portmap

  tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 5596/cupsd

  tcp 0 0 127.0.0.1:49342 127.0.0.1:22 TIME_WAIT -

  tcp 0 0 10.0.64.36:49343 10.0.76.109:22 TIME_WAIT -

  tcp 0 0 :::80 :::* LISTEN 18531/httpd

  tcp 0 0 :::22 :::* LISTEN 2378/sshd

  tcp 0 0 :::443 :::* LISTEN 18531/httpd

  tcp 0 124 ::ffff:10.0.64.36:22 ::ffff:10.0.77.15:1144 ESTABLISHED 20785/0

  [root@security-lab1 ~]# redir --lport=3000 --cport=22 --caddr=10.0.76.109

  redir把远程主机10。0。76。109的22端口重定向到了本地的3000端口

  D:\exploit>nc -vv -n 10.0.64.36 3000

  (UNKNOWN) [10.0.64.36] 3000 (?) open

  SSH-2.0-OpenSSH_4.0

  用ssh登陆10.0.64.36的3000端口

  login as: axis

  axis@10.0.64.36's password:

  Last login: Thu Feb 23 14:45:52 2006

  [axis@axis ~]$ /sbin/ifconfig ====> 可以看到我们实际上是登陆到了10.0.76.109的sshd

  eth0 Link encap:Ethernet HWaddr 00:11:09:08:07:00

  inet addr:10.0.76.109 Bcast:10.0.76.255 Mask:255.255.255.0

  inet6 addr: fe80::211:9ff:fe08:700/64 Scope:Link

  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

  RX packets:583908 errors:0 dropped:0 overruns:0 frame:0

  TX packets:8067 errors:0 dropped:0 overruns:0 carrier:0

  collisions:0 txqueuelen:1000

  RX bytes:70442739 (67.1 MiB) TX bytes:864787 (844.5 KiB)

  Interrupt:12 Base address:0xd000

  [root@axis ~]# netstat -antp

  Active Internet connections (servers and established)

  Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

  tcp 0 0 0.0.0.0:* 0.0.0.0:* -

  tcp 0 0 :::22 :::* LISTEN 2454/sshd

  tcp 0 0 ::ffff:10.0.76.109:22 ::ffff:10.0.64.36:49347 ESTABLISHED 31393/sshd: axis [p

  tcp 0 0 ::ffff:10.0.76.109:22 ::ffff:10.0.64.36:49346 TIME_WAIT -

  [root@axis ~]#

  可以看到,远程主机10。0。76。109 的22端口被完全重定向到10。0。64。36的3000端口,访问其3000端口就相当于直接访问到10。0。76。109的22端口了

  以上两个小工具都可以在packetstorm找到。

 

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