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aadba79bd4
| Author | SHA1 | Date | |
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| aadba79bd4 |
90
bootstrap.sh
90
bootstrap.sh
@@ -1,6 +1,6 @@
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#!/bin/bash
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#!/bin/bash
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#################. VARIABLES
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### 1. VARIABLES
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MOTD="/etc/update-motd.d/01-custom"
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MOTD="/etc/update-motd.d/01-custom"
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REBOOTBIN="/usr/sbin/reboot"
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REBOOTBIN="/usr/sbin/reboot"
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REBOOTBINOLD="/usr/sbin/reboot.old"
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REBOOTBINOLD="/usr/sbin/reboot.old"
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@@ -10,20 +10,16 @@ REBOOTHANDLER="/root/scripts/reboot_handler.sh"
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CRONTABTMP="/tmp/crontab.root.tmp"
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CRONTABTMP="/tmp/crontab.root.tmp"
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HOSTNAME=$(hostname)
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HOSTNAME=$(hostname)
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KEYFILE="/root/.ssh/$HOSTNAME"
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KEYFILE="/root/.ssh/$HOSTNAME"
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TEMP_SCRIPT="/root/firstlogin.sh"
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MOTD_TEMP="/etc/update-motd/02-temp"
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TEMP_SCRIPT_WRAPPER="/root/firstloginwrapper.sh"
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TEMP_SCRIPT_CLEANER="/root/firstlogincleaner.sh"
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#################. ALIASES
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## 2. ALIASES
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echo "alias ll='ls -l --color=auto'" >> ~/.bashrc
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echo "alias ll='ls -l --color=auto'" >> ~/.bashrc
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echo "alias l='ls -lAh --color=auto'" >> ~/.bashrc
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echo "alias l='ls -lAh --color=auto'" >> ~/.bashrc
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echo "" >> ~/.bashrc
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echo 'PS1="\u\[\e[0m\]@\[\e[31m\]\h\[\e[0m\]:\[\e[34m\]\w\[\e[0m\]# "' >> ~/.bashrc
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source ~/.bashrc
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source ~/.bashrc
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#################. UPDATE & ESSENTIALS
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## 3. UPDATE & ESSENTIALS
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apt update && apt -o Dpkg::Options::="--force-confold" upgrade -y
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apt update && apt -o Dpkg::Options::="--force-confold" upgrade -y
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apt install -y vim inxi fastfetch htop ncdu net-tools
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apt install -y vim inxi fastfetch htop ncdu net-tools
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@@ -60,27 +56,29 @@ fi
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EOF
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EOF
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chmod +x $MOTD
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chmod +x $MOTD
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#################. Création du script first-login
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### 4. Création du script first-login
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cat << 'EOF' > $TEMP_SCRIPT
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cat << 'EOF' > $MOTD_TEMP
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#!/bin/bash
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#!/bin/bash
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RED='\033[0;31m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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HOSTNAME=$(hostname)
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HOSTNAME=$(hostname)
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KEYFILE="/root/.ssh/$HOSTNAME"
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KEYFILE="/root/.ssh/$HOSTNAME"
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echo
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echo
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echo "==============================="
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echo -e "${BLUE}===============================${NC}"
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echo " Clé privée SSH à conserver !"
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echo -e "${BLUE} Clé privée SSH à conserver !${NC}"
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echo "==============================="
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echo -e "${BLUE}===============================${NC}"
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echo
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echo
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cat "${KEYFILE}"
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# Affichage dans TON shell
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cat "$KEYFILE"
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echo
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echo
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echo "==============================="
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echo "${BLUE}===============================${NC}"
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# Suppression de la clé privée
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# Suppression de la clé privée
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rm -f "$KEYFILE"
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rm -f "${KEYFILE}"
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# Durcissement SSH
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# Durcissement SSH
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sed -i 's/^#\?PubkeyAuthentication.*/PubkeyAuthentication yes/' /etc/ssh/sshd_config
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sed -i 's/^#\?PubkeyAuthentication.*/PubkeyAuthentication yes/' /etc/ssh/sshd_config
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@@ -89,56 +87,16 @@ sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin prohibit-password/' /etc/ssh/ssh
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sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
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sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
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systemctl restart sshd
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systemctl restart sshd
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rm -fr $MOTD_TEMP
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# Nettoyage différé
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nohup /root/firstlogincleaner.sh >/dev/null 2>&1 &
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exit 0
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EOF
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EOF
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chmod +x $TEMP_SCRIPT
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chmod +x $MOTD_TEMP
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### 5. Hardening binaries
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cat << 'EOF' > $TEMP_SCRIPT_WRAPPER
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#!/bin/bash
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if [ -f /root/firstlogin.sh ]; then
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/root/firstlogin.sh
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fi
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exit 0
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EOF
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chmod +x $TEMP_SCRIPT_WRAPPER
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cat << 'EOF' > $TEMP_SCRIPT_CLEANER
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#!/bin/bash
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# Attendre la fin du login
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sleep 2
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# Supprimer la ligne PAM
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sed -i '/firstloginwrapper.sh/d' /etc/pam.d/sshd
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# Supprimer les scripts
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rm -f /root/firstlogin.sh
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rm -f /root/firstloginwrapper.sh
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rm -f /root/firstlogincleaner.sh
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rm -f /root/bootstrap.sh
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exit 0
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EOF
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chmod +x $TEMP_SCRIPT_CLEANER
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echo "auth optional pam_exec.so stdout /root/firstloginwrapper.sh" >> /etc/pam.d/sshd
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#################. Hardening binaries
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# REBOOT WRAPPER
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# REBOOT WRAPPER
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mv $REBOOTBIN $REBOOTBINOLD
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mv $REBOOTBIN $REBOOTBINOLD
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cat << 'EOF' > $REBOOTBIN
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cat << 'EOF' > $REBOOTBIN
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#!/bin/bash
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#!/bin/bash
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touch /var/log/restart-flag
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touch /var/log/restart-flag
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echo "[REBOOT] Rebooting server..."
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sleep 1
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sleep 1
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/usr/sbin/reboot.old
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/usr/sbin/reboot.old
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EOF
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EOF
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@@ -148,14 +106,13 @@ chmod +x $REBOOTBIN
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cat << 'EOF' > $SHUTBIN
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cat << 'EOF' > $SHUTBIN
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#!/bin/bash
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#!/bin/bash
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touch /var/log/restart-flag
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touch /var/log/restart-flag
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echo "[SHUTDOWN] Stopping server..."
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sleep 1
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sleep 1
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shutdown -h now
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shutdown -h now
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EOF
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EOF
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chmod +x $SHUTBIN
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chmod +x $SHUTBIN
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#################. REBOOT HANDLER
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### 6. REBOOT HANDLER
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mkdir -p $SCRIPTSDIR
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mkdir -p $SCRIPTSDIR
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cat << 'EOF' > $REBOOTHANDLER
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cat << 'EOF' > $REBOOTHANDLER
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#!/bin/bash
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#!/bin/bash
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@@ -211,8 +168,3 @@ ssh-keygen -t ed25519 -C "$HOSTNAME" -f "$KEYFILE" -N ""
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# Ajouter la clé publique dans authorized_keys
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# Ajouter la clé publique dans authorized_keys
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cat "${KEYFILE}.pub" >> /root/.ssh/authorized_keys
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cat "${KEYFILE}.pub" >> /root/.ssh/authorized_keys
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chmod 600 /root/.ssh/authorized_keys
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chmod 600 /root/.ssh/authorized_keys
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rm -fr /etc/systemd/system/bootstrap.service
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rm -fr /etc/systemd/system/multi-user.target.wants/bootstrap.service
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rm -fr /root/run-bootstrap.sh
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systemctl daemon-reload
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