#!/bin/sh
# Audit Linux Redhat Script v1.5 (c) 2001-2012 by Marc Heuse <mh@mh-sec.de>
# Source repository: http://www.baseline-security.de/audit/
# Note: This script is for checking the system configuration, NOT for forensic!
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
PATH="/sbin:/usr/sbin:/bin:/usr/bin:$PATH"
HOSTNAME=`hostname`
AUDIT_NAME="AUDIT-$HOSTNAME"
AUDIT_DIR="/tmp/$AUDIT_NAME"
OUTFILE="$AUDIT_DIR.tar.gz"

FILE_LIST_ETC="/etc/aliases /etc/group \
 /etc/cron* /etc/export* /etc/profile /etc/login* \
 /etc/*ftp* /etc/host* /etc/inittab /etc/issue* /etc/motd /etc/csh* \
 /etc/shells /etc/securetty /etc/sock* /etc/yp* /etc/fstab \
 /etc/snmp/ /etc/hosts*  /etc/sudoers /etc/securetty /etc/security/ 
 /etc/default/  /sbin/init.d /etc/pam.d/* /etc/cron* \
 /etc/*conf* /etc/*cfg* /etc/*.d /etc/rc* /etc/pass* /etc/shad* \
 /usr/local/etc/ /etc/mail/ /etc/sendmail.cf  /etc/httpd /etc/samba/ \
 /etc/bind /etc/named /etc/postfix /etc/postgresql /etc/mysql /etc/qmail \
 /etc/courier /etc/cups /etc/dhcp /etc/dhcp3 /etc/*ssh*/ssh*conf* \
 /etc/xinetd* /etc/*/*conf /usr/local/etc \
 /etc/ldap /etc/openldap /etc/squid /etc/rpm /etc/up2date/ /etc/sysconfig"

OLD_UMASK=`umask`
OLD_ENV=`env`
umask 077
set -o noclobber
> "$OUTFILE" || exit 1
if [ -e "$AUDIT_DIR" ]; then
    mv "$AUDIT_DIR" "$AUDIT_DIR".old
fi
mkdir "$AUDIT_DIR" || exit 1
cd "$AUDIT_DIR" || exit 1
set +o noclobber

[ "`id -u`" -ne 0 ] && echo "Not running as root, some information might not be extracted"

# system performance data
df -k > disk.out 2>&1
uptime > uptime.out  2>&1
cat /proc/meminfo > memory.out  2>&1
sar 5 2 > sar.out  2>&1
vmstat > vmstat.out  2>&1

# Extract information from the system
tar cf etc.tar $FILE_LIST_ETC 2> /dev/null
tar cf var.tar /var/yp /var/nis/data /var/spool/cron 2> /dev/null

# NOTE: If using automounter this will fail (should abort before)
tar cf home.tar /.*bash* /.netrc /.rhosts /.log* /.*csh* /.Xa* \
 /.prof* /home/*/.*bash* /home/*/.netrc /home/*/.rhosts \
 /home/*/.log* /home/*/.*csh* /home/*/.Xa* /home/*/.prof* \
 /root/.*bash* /root/.netrc /root/.rhosts /root/.log* /root/.*csh* \
 /root/.Xa* /root/.prof* 2> /dev/null
# Process accounting
if [ -d /var/log/sa ] ; then
	tar cf system-act.tar /var/log/sa/ 2>/dev/null
fi

find / \( -perm -4000 -o -perm -2000 \) -type f -exec /bin/ls -ld {} \; >> find-s_id.out 2>&1
find / -perm -2 '!' -type l -exec /bin/ls -ld {} \; >> find-write.out 2>&1

# List directories
/bin/ls -al / > ls-root.out 2>&1
# Configuration files
/bin/ls -alR /etc > ls-etc.out 2>&1
# Devices 
/bin/ls -alRL /dev > ls-dev.out 2>&1
# Temporary files
/bin/ls -al /tmp > ls-tmp.out 2>&1
/bin/ls -al /var/tmp > ls-var-tmp.out 2>&1
# Log and Spool files
/bin/ls -alR /var/log /var/adm /var/spool /var/spool/mail > ls-var.out 2>&1
# Extra software
/bin/ls -alR /opt /software /usr/local > ls-software.out 2>&1
# Home directories (comment if this is automouted)
/bin/ls -alRL /home > ls-home.out 2>&1
# Kernel files
/bin/ls -alR /vmlin* /boot > ls-boot.out 2>&1
# Loaded modules
lsmod >lsmod.out 2>&1
# Mounted file systems
mount > mount.out 2>&1
# RPC services
rpcinfo -p > rpcinfo.out 2>&1
# Exported filesystems
which showmount >/dev/null 2>&1  && showmount -e >exports.out 2>&1
# Processes
ps auxwww > ps.out  2>&1
# List of packages
rpm -qa > rpm.out  2>&1
# Patches available (needs to be registered)
if [ -f /etc/sysconfig/rhn/rhn_register ]
then
	up2date -l > up2date.out 2>&1
else
	echo "This server is not registered in RedHat Network, check patches manually" > up2date.out
fi
# Package status
rpm -Va >rpm-verify.out  2>&1
# Chkconfig services
chkconfig --list >chkconfig.out  2>&1
# System information
# Machine name
uname -a > uname.out  2>&1
# Machine OS and version
cat /etc/*release* >> uname.out  2>&1
# Users connected to the system
last -25 > last_25.out  2>&1
last -5 root > last_root.out  2>&1
# X access controls
xhost > xhost.out  2>&1
xauth list >xauth.out  2>&1
# History of user running the audit
history > history.out  2>&1
# Open listeners
netstat -an > netstat-an.out  2>&1
# Routing
netstat -rn > netstat-rn.out  2>&1
# Process-sockets
netstat -anp > netstat-anp.out  2>&1
# Process-sockets 
which lsof >/dev/null 2>&1 && lsof -n >lsof.out  2>&1

# Environment and Umask
echo "$OLD_ENV" > env.out
echo "$OLD_UMASK" > umask.out

# IP Filtering 
# For 2.4 kernels
iptables -nL >iptables.out  2>&1
# For 2.2 kernels
ipchains -L -n -v > ipchains.out  2>&1
# For older kernels
ipfwadm  -L -n -v > ipfwadm.out  2>&1

# Kernel parameters (not all might apply)
# Note: This is maybe too exaggerated (might it introduce issues? (jfs)
# TCP/IP parameters
for i in `find /proc/sys/net/ipv4 -type f`; do
    [ "$i" != "/proc/sys/net/ipv4/route/flush" ] && {
    echo -n "$i: " >> proc.out
    cat $i >> proc.out  2>&1
    echo "" >> proc.out
   }
done
for i in icmp_echo_ignore_broadcasts icmp_echo_ignore_all tcp_syncookies \
 ip_always_defrag ip_forward ; do
    echo -n "/proc/sys/net/ipv4/$i: " >> proc.out
    cat /proc/sys/net/ipv4/$i >> proc.out  2>&1
    echo "" >> proc.out
done
for i in /proc/sys/net/ipv4/conf/*; do
    for j in accept_redirects accept_source_route rp_filter bootp_relay \
     mc_forwarding log_martians proxy_arp secure_redirects; do
        echo -n "$i/$j: " >> proc.out
        cat $i/$j >> proc.out  2>&1
        echo "" >> proc.out
    done
done

# Finish up, compress the output
cd /tmp
tar czf "$OUTFILE" "$AUDIT_NAME"
echo "$OUTFILE is finished, you may delete '$AUDIT_DIR' now."

exit 0