create-linux-pro-step-1.md

Update software list host pc:

sudo su
apt-get install live-build debootstrap squashfs-tools xorriso grub-pc-bin grub-efi-amd64-bin mtools isolinux xserver-xephyr dbus-x11 

Update sources list host pc:

sudo su
echo "deb http://http.kali.org/kali kali-rolling main contrib non-free" > /etc/apt/sources.list 
echo "deb-src http://http.kali.org/kali kali-rolling main contrib non-free" >> /etc/apt/sources.list 

echo "deb http://ftp.de.debian.org/debian bullseye main contrib non-free" >> /etc/apt/sources.list 
echo "deb-src http://ftp.de.debian.org/debian bullseye main contrib non-free" >> /etc/apt/sources.list 
echo "deb http://security.debian.org/debian-security/ bullseye-security main" >> /etc/apt/sources.list 
echo "deb-src http://security.debian.org/debian-security/ bullseye-security main" >> /etc/apt/sources.list 

echo "deb http://deb.debian.org/debian buster main contrib non-free" >> /etc/apt/sources.list 
echo "deb-src http://deb.debian.org/debian buster main contrib non-free" >> /etc/apt/sources.list 
echo "deb http://security.debian.org/debian-security buster/updates main contrib" >> /etc/apt/sources.list 
echo "deb-src http://security.debian.org/debian-security buster/updates main contrib" >> /etc/apt/sources.list
apt-get update 

Easy way to create a iso:

sudo su
rm -rf auto
rm -rf cache
rm -rf chroot
rm -rf config
rm -rf local
lb clean

lb config \
  --binary-images iso-hybrid \
  --mode debian \
  --architectures amd64 \
  --linux-flavours amd64 \
  --distribution buster \
  --archive-areas "main contrib non-free" \
  --updates true \
  --security true \
  --cache true \
  --apt-recommends true \
  --debian-installer live \
  --debian-installer-gui true \
  --win32-loader false \
  --iso-application skynet \
  --iso-preparer grotius \
  --iso-publisher grotius \
  --iso-volume skynet \
  
echo task-xfce-desktop > $(pwd)/config/package-lists/desktop.list.chroot

lb build

Copy iso to usb:

sudo dd bs=4M if=live-image-amd64.hybrid.iso of=/dev/sdb conv=fdatasync status=progress

Unpack iso filesystem.squashfs:

unsquashfs filesystem.squashfs

Chroot into /binary/squashfs-root/

sudo su
mount --bind /dev squashfs-root/dev
mount --bind /dev/pts squashfs-root/dev/pts
mount --bind /sys squashfs-root/sys
mount --bind /proc squashfs-root/proc
mount --bind /run squashfs-root/run
mount --bind /run/udev squashfs-root/run/udev
mount --bind /tmp squashfs-root/tmp
mount --bind /var/lib squashfs-root/var/lib 
mount --bind /etc squashfs-root/etc
chroot squashfs-root /usr/bin/bash

#### Or if xephyr display is given error, after mount's do a :
chroot squashfs-root

In chroot now:

export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
export LC_ALL=C
dhclient

Update sources list in chroot environment:

echo "deb http://ftp.de.debian.org/debian bullseye main contrib non-free" > /etc/apt/sources.list 
echo "deb-src http://ftp.de.debian.org/debian bullseye main contrib non-free" >> /etc/apt/sources.list 
echo "deb http://security.debian.org/debian-security/ bullseye-security main" >> /etc/apt/sources.list 
echo "deb-src http://security.debian.org/debian-security/ bullseye-security main" >> /etc/apt/sources.list 

echo "deb http://deb.debian.org/debian buster main contrib non-free" >> /etc/apt/sources.list 
echo "deb-src http://deb.debian.org/debian buster main contrib non-free" >> /etc/apt/sources.list 
echo "deb http://security.debian.org/debian-security buster/updates main contrib" >> /etc/apt/sources.list 
echo "deb-src http://security.debian.org/debian-security buster/updates main contrib" >> /etc/apt/sources.list
apt-get update 

For example add Kali's repository:

Download kali's keyring :

wget http://http.kali.org/kali/pool/main/k/kali-archive-keyring/kali-archive-keyring_2020.2_all.deb

Install kali's keyring :

dpkg -i kali-archive-keyring_2020.2_all.deb

Add kali's repository:

echo "deb http://http.kali.org/kali kali-rolling main contrib non-free" > /etc/apt/sources.list 
echo "deb-src http://http.kali.org/kali kali-rolling main contrib non-free" >> /etc/apt/sources.list 
apt-get update

Install software:

apt-get dist-upgrade
apt-get install xserver-xephyr dbus-x11 isolinux
apt-get install inkscape live-build debootstrap squashfs-tools xorriso grub-pc-bin grub-efi-amd64-bin mtools 

Set up display in host pc, open up new terminal :

Xephyr -ac -screen 1600x900 -br -reset -terminate 2> /dev/null :1 & 

Back to chroot terminal, start the xfce4 desktop environment:

export DISPLAY=:1
xclock
# CNTRL+Z
startxfce4 &  
# If Xephyr is not starting look at the create-linux-pro-step-2.md file.

Set gui colors, theme, https://www.xfce-look.org/browse/cat/

Copy your favority theme to /usr/share/themes or borrow one from kali's theme's dir.

Open Settings > Appearance > Style to select the default theme.

https://forum.xfce.org/viewtopic.php?id=11119

Try creating a .desktop file in /etc/xdg/autostart with the following content:

[Desktop Entry]
Encoding=UTF-8
Version=0.9.4
Type=Application
Name=Change Theme
Comment=Change the theme on startup
Exec=/usr/local/bin/change-theme
OnlyShowIn=XFCE;
StartupNotify=false
Terminal=false
Hidden=false

Create the file /usr/local/bin/change-theme with the content:

#!/bin/bash
xfconf-query -c xsettings -p /Net/ThemeName -s  "Kali-Dark"

Set the login screen theme (Kali-Dark) & background (color #23252e) in /etc/lightdm/lightdm-gtk-greeter.conf

Test command to change theme:

	xfconf-query -c xsettings -p /Net/ThemeName -s  "Xfce"

Desktop settings, copy /root/.config/xfce4/* to /etc/xdg/xfce4/xfconf/xfce-perchannel-xml/

Replace boot background in /isolinux/splash.png (isolinux is used as starter)

Replace boot background in /boot/grub/splash.png

Edit colors in /isolinux/stdmenu.cfg

Close chroot environment, a reboot can be faster :

exit
mount
umount -l /yourpath/dev

Repack filesystem:

mksquashfs squashfs-root/ filesystem.squashfs -comp xz

Edit the ./disk/info file

Create iso:

xorriso -as mkisofs -iso-level 3 -V 'Linux Pro' \
-o Linux-Pro.iso -J -J -joliet-long -cache-inodes \
-isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
-b isolinux/isolinux.bin \
-c isolinux/boot.cat -boot-load-size 4 -boot-info-table -no-emul-boot -eltorito-alt-boot \
-e efi.img -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus .

Copy the remastered iso to usb:

sudo dd bs=4M if=Linux-Pro.iso of=/dev/sdb conv=fdatasync status=progress