I have been having trouble, I am using the following steps

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Install live-build
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sudo apt-get install live-build

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Git clone the live-build configs
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git clone git://git.kali.org/live-build-config.git
cd live-build-config

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#Create a binary hook which adds a new boot menu option for Unattended Install
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wget https://www.kali.org/dojo/preseed.cfg -O kali-config/common/hooks/02-unattended-boot.binary
chmod +x kali-config/common/hooks/02-unattended-boot.binary


#what it should look like

#!/bin/sh
cat >>binary/isolinux/install.cfg < label install
menu label ^Unattended Install
menu default
linux /install/vmlinuz
initrd /install/initrd.gz
append vga=788 — quiet file=/cdrom/install/preseed.cfg locale=en_US keymap=us hostname=remote domain=remote.lan
END


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Set up an unattended preseed file
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wget https://github.com/Wh1t3Rh1n0/kali-u...er/preseed.cfg -O ./kali-config/common/includes.installer/preseed.cfg

#what it should look like

## Added
d-i debian-installer/language string en
d-i debian-installer/country string US
d-i debian-installer/locale string en_US.UTF-8
d-i keymap select us
d-i netcfg/choose_interface select auto


#d-i debian-installer/locale string en_US
#d-i console-keymaps-at/keymap select us

## Added
apt-mirror-setup apt-setup/use_mirror boolean true

d-i mirror/country string enter information manually
d-i mirror/suite string kali-rolling
d-i mirror/codename string kali-rolling
d-i mirror/http/hostname string http.kali.org
d-i mirror/http/directory string /kali
d-i mirror/http/proxy string
d-i clock-setup/utc boolean true
d-i time/zone string US/Eastern

# Disable volatile and security
d-i apt-setup/services-select multiselect

# Enable contrib and non-free
d-i apt-setup/non-free boolean true
d-i apt-setup/contrib boolean true

d-i partman-auto/method string regular
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-lvm/confirm boolean true
d-i partman-auto/choose_recipe select atomic
d-i partman/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true

# Add our own security mirror
#d-i apt-setup/local0/repository string http://archive.kali.org/kali-security kali/updates main
#d-i apt-setup/local0/comment string Security updates
#d-i apt-setup/local0/source boolean false
#d-i apt-setup/use_mirror boolean true

# Upgrade installed packages
tasksel tasksel/first multiselect standard
d-i pkgsel/upgrade select full-upgrade
# Install a limited subset of tools from the Kali Linux repositories
d-i pkgsel/include string openssh-server openvas metasploit-framework metasploit nano

# Change default hostname

## Changed
d-i netcfg/get_hostname string remote
d-i netcfg/get_domain string remote.lan

d-i netcfg/hostname string kali

# Do not create a normal user account
d-i passwd/make-user boolean false
d-i passwd/root-password password toor
d-i passwd/root-password-again password toor

popularity-contest popularity-contest/participate boolean false
d-i grub-installer/only_debian boolean true
## Changed false to true
d-i grub-installer/with_other_os boolean true
d-i finish-install/reboot_in_progress note

## Added # Remove the line below to select where Grub is installed during
## install
d-i grub-installer/bootdev string /dev/sda

#d-i preseed/late_command string \
# in-target wget http://192.168.101.54/postseed.sh; \
# in-target /bin/bash -x chmod 755 ./postseed.sh; \
# in-target /bin/bash -x ./postseed.sh;


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BUILD THE ISO
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./build.sh --distribution kali-rolling --verbose

./build.sh --verbose