apt-get install squashfs-tools

#!/bin/bash
# Original BT4 script (C) by Offensive security
# Fixes for BT5 by IceF0x

red='\e[0;31m'
NC='\e[0m'
green='\e[0;32m'

if [ "$(whoami)" != root ]
then
echo -e "$red Error:$NC Vous devez être root pour pouvoir exécuter ce script !"
exit 1
fi

if [ -z "$1" ]; then
btisoname="BT5R3-GNOME-32.iso"
else
btisoname="$1"
fi

if [ -z "$2" ]; then
btiso="BT5R3-GNOME-32-custom.iso"
else
btiso="$2"
fi

echo -e "[$green*$NC] Using $btisoname as source"
echo -e "[$green*$NC] Using $btiso as dest"
echo "##############################################################"
echo -e "[$green*$NC] BackTrack 5 R3 customisation script"
echo -e "[$green*$NC] Setting up the build environment..."

services="inetutils-inetd tinyproxy iodined knockd openvpn atftpd ntop nstxd nstxcd apache2 sendmail atd dhcp3-server winbind miredo miredo-server pcscd wicd wacom cups bluetooth binfmt-support mysql"

mkdir -p mnt
mount -o loop $btisoname mnt/
mkdir -p extract-cd
rsync --exclude=/casper/filesystem.squashfs -a mnt/ extract-cd
mkdir -p squashfs
mount -t squashfs -o loop mnt/casper/filesystem.squashfs squashfs
mkdir -p edit
echo -e "[$green*$NC] Copying over files, please wait ... "

cp -a squashfs/* edit/

cp /etc/resolv.conf edit/etc/
cp /etc/hosts edit/etc/
cp /etc/fstab edit/etc/
cp /etc/mtab edit/etc/

mount --bind /dev/ edit/dev
mount --bind /dev/pts edit/dev/pts
mount -t proc /proc edit/proc

echo "##############################################################"
echo -e "[$green*$NC] Entering livecd. "
echo "##############################################################"
echo -e "[$green*$NC] Now you can modify the LiveCD. At minimum, we recommend :"
echo -e "[$green*$NC] apt-get update && apt-get upgrade & apt-get clean"
echo "##############################################################"
echo -e "[$green*$NC] If you are running a large update, you might need to stop"
echo -e "[$green*$NC] services like crond, udev, cups, etc in the chroot"
echo -e "[$green*$NC] before exiting your chroot environment."
echo "##############################################################"
echo -e "[$green*$NC] Once you have finished your modifications, type \"exit\""
echo "##############################################################"

chroot edit

echo -e "[$green*$NC] Exited the build environemnt, unmounting images."

rm -rf edit/etc/mtab
rm -rf edit/etc/fstab

umount edit/dev
umount edit/proc
umount squashfs
umount mnt

chmod +w extract-cd/casper/filesystem.manifest

echo -e "[$green*$NC] Building manifest"
chroot edit dpkg-query -W --showformat='${Package} ${Version}\n' > extract-cd/casper/filesystem.manifest

for service in $services;do
chroot edit update-rc.d -f $service remove
done

REMOVE='ubiquity casper live-initramfs user-setup discover xresprobe os-prober libdebian-installer4'
for i in $REMOVE
do
sed -i "/${i}/d" extract-cd/casper/filesystem.manifest-desktop
done

cp extract-cd/casper/filesystem.manifest extract-cd/casper/filesystem.manifest-desktop

sed -i '/ubiquity/d' extract-cd/casper/filesystem.manifest-desktop

rm -rf extract-cd/casper/filesystem.squashfs
echo -e "[$green*$NC] Building squashfs image..."

mksquashfs edit extract-cd/casper/filesystem.squashfs

rm extract-cd/md5sum.txt

(cd extract-cd && find . -type f -print0 | xargs -0 md5sum > md5sum.txt)

cd extract-cd

echo -e "[$green*$NC] Creating iso ..."

genisoimage -o $btiso -r -J -no-emul-boot -boot-load-size 4 -boot-info-table -b isolinux/isolinux.bin -c isolinux/boot.cat ./

cd ..

echo -e "[$green*$NC] Your modified BT5 is in $(pwd)/$btiso"
echo "##############################################################"

mkdir BUILD/

cd BUILD/

chmod 755 bt5r3-customise.sh

./bt5r3-customise.sh