apt-get update && apt-get install -y linux-headers-$(uname -r) and tried
apt-get update
apt-get install -y virtualbox-guest-x11
reboot



it:1 http://archive-6.kali.org/kali kali-rolling InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package linux-headers-4.3.0-kali1-686-pae
E: Couldn't find any package by glob 'linux-headers-4.3.0-kali1-686-pae'
E: Couldn't find any package by regex 'linux-headers-4.3.0-kali1-686-pae'



VAR LOG:

Uninstalling modules from DKMS
Attempting to install using DKMS

Creating symlink /var/lib/dkms/vboxguest/5.0.20/source ->
                 /usr/src/vboxguest-5.0.20

DKMS: add completed.
Error! echo
Your kernel headers for kernel 4.3.0-kali1-686-pae cannot be found at
/lib/modules/4.3.0-kali1-686-pae/build or /lib/modules/4.3.0-kali1-686-pae/source.
Failed to install using DKMS, attempting to install without
/tmp/vbox.0/Makefile.include.header:97: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again.  Stop.
Creating user for the Guest Additions.
Creating udev rule for the Guest Additions kernel module.