#!/usr/bin/env bash

BUILD="build"
ISO="live.iso"

# REF: https://www.kali.org/get-kali/#kali-live
URI="https://cdimage.kali.org/kali-2025.2/kali-linux-2025.2-live-amd64.iso"

set -euo pipefail

echo "[+] Fetching latest Kali live ISO"
mkdir -p "$BUILD"
wget -O "$BUILD/$ISO" "$URI"

echo "[+] Extracting ISO contents"
mkdir -p "$BUILD/iso"
7z x "$BUILD/$ISO" -o "$BUILD/iso"

echo "[+] Linking filesystem.squashfs"
ln "$BUILD/filesystem.squashfs" "$BUILD/iso/live/filesystem.squashfs"

echo "[+] Decompressing filesystem"
mkdir -p "$BUILD/rootfs"
unsquashfs "$BUILD/filsystem.squashfs" -d "$BUILD/rootfs"