Linux提权后获取敏感信息的方法与途径(2)

#ssh

# 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

# 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

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？

id
who
w
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？

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

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

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？

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

cat ~/.bashrc
cat ~/.profile
cat /var/mail/root
cat /var/spool/mail/root

private-key 信息能否被发现？

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？

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

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

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

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

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？

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？

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/

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

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......)