Automate kali linux installation on huawei mate x3

kali_on_x3_installer.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# Kali NetHunter Rootless automated setup for Termux on Huawei Mate X3
+# Target directory: /data/data/com.termux/files/home/KALI_ON_X3
+
+TARGET_DIR="/data/data/com.termux/files/home/KALI_ON_X3"
+NH_INSTALLER_URL="https://offs.ec/2MceZWr" # OffSec shortlink to NetHunter Rootless installer
+
+command_exists() {
+	command -v "$1" >/dev/null 2>&1
+}
+
+log() {
+	echo "[KALI_ON_X3] $*"
+}
+
+abort() {
+	echo "[KALI_ON_X3][ERROR] $*" >&2
+	exit 1
+}
+
+ensure_termux() {
+	if [[ ! -d "/data/data/com.termux/files/home" ]]; then
+		abort "This installer must be run inside Termux."
+	fi
+}
+
+ensure_prereqs() {
+	log "Updating Termux packages and installing prerequisites..."
+	# Use pkg if available, otherwise apt.
+	if command_exists pkg; then
+		pkg update -y || true
+		pkg upgrade -y || true
+		pkg install -y wget proot tar curl grep coreutils || true
+	else
+		apt update -y || true
+		apt upgrade -y || true
+		apt install -y wget proot tar curl grep coreutils || true
+	fi
+
+	# Some Termux builds require storage permission for large downloads (optional)
+	if command_exists termux-setup-storage; then
+		termux-setup-storage || true
+	fi
+}
+
+create_layout() {
+	log "Creating target directory at ${TARGET_DIR}..."
+	mkdir -p "${TARGET_DIR}/bin" "${TARGET_DIR}/cache" "${TARGET_DIR}/logs"
+}
+
+download_installer() {
+	local out="${TARGET_DIR}/cache/install-nethunter-termux"
+	log "Fetching NetHunter Rootless installer..."
+	curl -fsSL -o "$out" "$NH_INSTALLER_URL" || wget -qO "$out" "$NH_INSTALLER_URL"
+	chmod +x "$out"
+	echo "$out"
+}
+
+run_nethunter_install() {
+	local installer_path="$1"
+	log "Running NetHunter installer (this will take a while)..."
+	# The official script installs under $HOME by default. We isolate by pushing a temp HOME.
+	# Using env HOME to direct installation into TARGET_DIR by temporarily setting HOME.
+	HOME_ORIG="$HOME"
+	export HOME="$TARGET_DIR"
+	# Non-interactive: the script is interactive by default; however, it usually proceeds without prompts.
+	# If prompts occur, they are typically for selecting arch; we detect device arch and export appropriately.
+	ARCH=$(uname -m)
+	case "$ARCH" in
+		armv7l|armv8l|arm)
+			export NHARCH="arm"
+			;;
+		aarch64|arm64)
+			export NHARCH="arm64"
+			;;
+		x86_64)
+			export NHARCH="amd64"
+			;;
+		*)
+			export NHARCH="arm64" # Mate X3 is ARM64
+			;;
+	endcase
+	# Run inside a subshell to avoid leaking env
+	( bash "$installer_path" )
+	# Restore HOME
+	export HOME="$HOME_ORIG"
+}
+
+create_wrappers() {
+	log "Creating startup wrappers..."
+	local start_wrapper="${TARGET_DIR}/bin/kali"
+	local su_wrapper="${TARGET_DIR}/bin/kali-su"
+	local profile_d="/data/data/com.termux/files/usr/etc/profile.d"
+	mkdir -p "${TARGET_DIR}/bin"
+	cat > "$start_wrapper" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+if command -v nethunter >/dev/null 2>&1; then
+	# Prefer official nethunter entrypoint if available in PATH
+	exec nethunter "$@"
+fi
+# Fallback to startkali if provided by scripts
+if command -v startkali >/dev/null 2>&1; then
+	exec startkali "$@"
+fi
+echo "Kali entrypoint not found. Ensure NetHunter Rootless is installed." >&2
+exit 1
+EOF
+	chmod +x "$start_wrapper"
+
+	cat > "$su_wrapper" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+if command -v nethunter >/dev/null 2>&1; then
+	exec nethunter -r su -c bash "$@"
+fi
+echo "nethunter not available; root shell wrapper cannot proceed." >&2
+exit 1
+EOF
+	chmod +x "$su_wrapper"
+
+	# Add to PATH via profile.d if not already
+	mkdir -p "$profile_d"
+	local export_file="$profile_d/kali_on_x3_path.sh"
+	if [[ ! -f "$export_file" ]]; then
+		echo "export PATH=\"${TARGET_DIR}/bin:\$PATH\"" > "$export_file"
+	fi
+}
+
+post_install_notes() {
+	log "Post-install: updating Kali if available..."
+	# Try a quick non-interactive update if nethunter is present
+	if command -v nethunter >/dev/null 2>&1; then
+		nethunter -r apt-get update || true
+	fi
+	log "Installation complete. Open a new Termux session or run: source /data/data/com.termux/files/usr/etc/profile"
+	log "Then start Kali with: kali"
+}
+
+already_installed() {
+	# Heuristic: if NetHunter created its directory or entrypoint
+	if command -v nethunter >/dev/null 2>&1; then
+		return 0
+	fi
+	if [[ -d "${TARGET_DIR}/kali-arm64" || -d "${TARGET_DIR}/kali-arm" || -f "${TARGET_DIR}/.nh-installed" ]]; then
+		return 0
+	fi
+	return 1
+}
+
+mark_installed() {
+	touch "${TARGET_DIR}/.nh-installed" || true
+}
+
+uninstall() {
+	log "Uninstalling Kali NetHunter Rootless from ${TARGET_DIR}..."
+	# Remove wrappers from PATH
+	rm -f "${TARGET_DIR}/bin/kali" "${TARGET_DIR}/bin/kali-su" || true
+	# Remove PATH export file
+	rm -f "/data/data/com.termux/files/usr/etc/profile.d/kali_on_x3_path.sh" || true
+	# Attempt to remove NetHunter directories commonly used
+	rm -rf "${TARGET_DIR}/kali-arm64" "${TARGET_DIR}/kali-arm" "${TARGET_DIR}/cache" "${TARGET_DIR}/logs" || true
+	rm -f "${TARGET_DIR}/.nh-installed" || true
+	# Remove target dir if empty
+	rmdir "${TARGET_DIR}/bin" 2>/dev/null || true
+	rmdir "${TARGET_DIR}" 2>/dev/null || true
+	log "Uninstall complete. You may need to start a new Termux session to refresh PATH."
+}
+
+main() {
+	ensure_termux
+	if [[ "${1:-}" == "--uninstall" ]]; then
+		uninstall
+		return 0
+	fi
+	ensure_prereqs
+	create_layout
+	if already_installed; then
+		log "NetHunter appears to be already installed. Skipping install step."
+		create_wrappers
+		post_install_notes
+		return 0
+	fi
+	local installer_path
+	installer_path=$(download_installer)
+	run_nethunter_install "$installer_path"
+	create_wrappers
+	mark_installed
+	post_install_notes
+}
+
+main "$@"
+