V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

.preseed/preseed.yaml

@@ -25,7 +25,7 @@ installer:
 apt:
   contrib: true                # Optionally, install contrib software.
   deb_sources: true            # Optionally includes deb-src entries for source repositories.
-  default_list: false          # By default, source repositories are listed in '/etc/apt/sources.list'. This MUST be "true".
+  default_list: false          # By default, source repositories are listed in '/etc/apt/sources.list'.
   default_deb822: true         # Since Trixie, source repositories are listed in '/etc/apt/sources.list.d/' in deb.822 format.
   full_upgrade: true           # Whether to upgrade packages after debootstrap.
   install_recommends: true     # Configure APT to not install recommended packages by default.
@@ -114,7 +114,11 @@ dropbear:
   firewall: false              # Yet not implemented. MUST be "false".
                                # Additional ultra hardening of the dropbear initramfs environment via firewall.
                                # The "bastion_ipv4" MUST be provided.
+  pgp_key: "/.pubkey/marc_s_weidner_msw@coresecret.dev_0xE62E84F8_public.asc"
+                               # './path/to/pgp_public_key.asc' to check the signature of: 'unlock-wrapper.sh'
   port: 42137                  # SSH Port dropbear initramfs should listen.
+  sig_file: "/.preseed/unlock-wrapper.sh.sha512.sig"
+                               # './path/to/unlock-wrapper.sh.sha512.sig' to verify the integrity of: 'unlock-wrapper.sh'
 
 ################################################################################################################################
 # Grub Bootparameter

ciss_debian_installer.sh

@@ -12,6 +12,7 @@
 
 ### Contributions so far see ./docs/CREDITS.md
 
+# TODO: SSHFP Dropbear Keys Generate
 # TODO: Install zsh Tools, eza
 # TODO: Implement this function 4215_check_crypttab.sh
 # TODO: Implement this function 4435_hardening_fail2ban.sh

func/cdi_4200_boot/4210_generate_crypttab.sh

@@ -97,15 +97,15 @@ EOF
           "${TARGET}/lib/cryptsetup/scripts/"
 
         #write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs,keyscript=/lib/cryptsetup/scripts/unlock_wrapper.sh"
-        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs"
+        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs,keyscript=decrypt_keyctl,tries=1"
 
       elif [[ "${var_key}" == "/usr" ]]; then
 
-        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs"
+        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs,keyscript=decrypt_keyctl,tries=1"
 
       else
 
-        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs"
+        write_crypttab "${var_encryption_label}" "UUID=${var_luks_uuid}" "none" "luks,discard,initramfs,keyscript=decrypt_keyctl,tries=1"
 
       fi
 
@@ -128,12 +128,12 @@ EOF
 
       swap)
         #write_crypttab "${var_ephemeral_enclabel}" "LABEL=${var_host_fs_label}" "/dev/random" "swap,offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,plain"
-        write_crypttab "${var_ephemeral_enclabel}" "UUID=${var_host_partuuid}" "/dev/random" "swap,offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,plain"
+        write_crypttab "${var_ephemeral_enclabel}" "UUID=${var_host_partuuid}" "/dev/urandom" "swap,offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,plain"
         ;;
 
       /tmp)
         #write_crypttab "${var_ephemeral_enclabel}" "LABEL=${var_host_fs_label}" "/dev/random" "offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,tmp=ext4"
-        write_crypttab "${var_ephemeral_enclabel}" "UUID=${var_host_partuuid}" "/dev/random" "offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,plain"
+        write_crypttab "${var_ephemeral_enclabel}" "UUID=${var_host_partuuid}" "/dev/urandom" "offset=2048,cipher=aes-xts-plain64,size=512,sector-size=4096,discard,plain"
         chroot_script "${TARGET}" "systemctl mask tmp.mount"
         do_log "info" "file_only" "4210() Masked: [tmp.mount]"
         ;;

func/cdi_4200_boot/4230_installation_grub.sh

@@ -128,7 +128,7 @@ GRUB_BACKGROUND="/etc/default/grub.d/${var_background}"
 # note that you can use only modes which your graphic card supports via VBE
 # you can see them in real GRUB with the command 'vbeinfo'
 # GRUB_GFXMODE=1920x1080,1280x1024,1024x768,800x600
-GRUB_GFXMODE=1280x1024
+GRUB_GFXMODE=auto
 GRUB_GFXPAYLOAD_LINUX=keep
 
 EOF

func/cdi_4400_hardening/4420_installation_ssh.sh

@@ -111,25 +111,9 @@ installation_ssh() {
   # environment variables: TMOUT                                                            #
   # TMOUT=14400 ensures that users are automatically logged out after 4 hours of inactivity.#
   ###########################################################################################
-  cat << EOF >| "${TARGET}/etc/profile.d/idle-users.sh"
-# SPDX-Version: 3.0
-# SPDX-CreationInfo: ${VAR_DATE}; WEIDNER, Marc S.; <msw@coresecret.dev>
-# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
-# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
-# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
-# SPDX-FileType: SOURCE
-# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
-# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
-# SPDX-PackageName: CISS.debian.installer
-# SPDX-Security-Contact: security@coresecret.eu
-
-# Static file system information: /etc/profile.d/idle-users.sh
-# Generated by CISS.debian.installer ${VAR_VERSION}
-# Architecture: ${VAR_ARCHITECTURE}
-# Distribution: ${VAR_CODENAME}
-
-EOF
-  cat << 'EOF' >> "${TARGET}/etc/profile.d/idle-users.sh"
+  insert_header   "${TARGET}/etc/profile.d/idle-users.sh"
+  insert_comments "${TARGET}/etc/profile.d/idle-users.sh"
+  cat << EOF >>   "${TARGET}/etc/profile.d/idle-users.sh"
 case $- in
   *i*)
     TMOUT=14400

includes/target/etc/initramfs-tools/files/unlock_wrapper.sh

@@ -74,7 +74,7 @@ extract_nuke_hash() {
 
   for ARG in ${CMDLINE}; do
 
-    case "${ARG}" in
+    case "${ARG,,}" in
 
       nuke=*)
         NUKE_HASH="${ARG#nuke=}"
@@ -150,7 +150,9 @@ nuke() {
 
   color_echo "${RED}" "✘ Error: LUKS Device malfunction. System Power Off in 16 seconds."
 
-  power_off 16
+  # TODO: DEBUGGER
+  drop_bash
+  #power_off 16
 }
 
 #######################################
@@ -299,7 +301,9 @@ trap_on_err() {
   trap - ERR INT TERM
   stty echo
   print_scr_err "${errcode}" "${errscrt}" "${errline}" "${errfunc}" "${errcmmd}"
-  power_off 16
+  # TODO: DEBUGGER
+  drop_bash
+  #power_off 16
 }
 
 #######################################
@@ -315,7 +319,9 @@ trap_on_term() {
   stty echo
   printf "%s" "${NL}"
   color_echo "${RED}" "✘ Received termination signal. System Power Off in 3 seconds." >&2
-  power_off 3
+  # TODO: DEBUGGER
+  drop_bash
+  #power_off 3
 }
 
 #######################################
@@ -346,7 +352,8 @@ verify_script() {
     gpgv --keyring /etc/keys/pubring.gpg "${sigfile}" "${hashfile}" || {
       color_echo "${RED}" "✘ Signature verification failed for: [${hashfile}]"
       color_echo "${RED}" "✘ System Power Off in 3 seconds ...."
-      power_off 3
+      # TODO: DEBUGGER
+      #power_off 3
     }
     color_echo "${GRE}" "🔏 Verifying signature of: [${hashfile}] successful."
 
@@ -358,7 +365,8 @@ verify_script() {
     if [[ "${computed}" != "${expected}" ]]; then
       color_echo "${RED}" "✘ Recomputed hash mismatch for     : [${item}]" >&2
       color_echo "${RED}" "✘ System Power Off in 3 seconds ...." >&2
-      power_off 3
+      # TODO: DEBUGGER
+      #power_off 3
     fi
     color_echo "${GRE}" "🔢 Recomputing Hash: [${item}] successful."
 
@@ -412,7 +420,10 @@ main() {
   if printf "%s" "${PASSPHRASE}" | cryptroot-unlock; then
 
     secure_unset_pass
-    exit 0
+    # TODO: DEBUGGER
+    echo "Inside if printf %s '${PASSPHRASE}' | cryptroot-unlock; then"
+    drop_bash
+    #exit 0
 
   else