2020-09-08 15:14:18 +02:00
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#!/usr/bin/env bash
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# for dependencies
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# apt install -t build-essential libncurses-dev bison flex libssl-dev libelf-dev
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#if [ $# -ne 3 ]
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# then
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# echo "No arguments supplied"
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#fi
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#flag1=$1
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#flag2=$2
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#flag3=$3
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flag1="cc{prima_flag}"
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flag2="cc{seconda_flag}"
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flag3="cc{terza_flag}"
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password=`hexdump -n 32 -e '4/4 "%08X"' /dev/urandom`
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echo "[+] Starting build script..."
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mkdir -p target/overlay/var/www/html
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echo "[+] Cloning buildroot"
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git clone https://github.com/buildroot/buildroot.git target/buildroot
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echo "[+] Adding customization files"
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cp -R buildroot/* target/buildroot # copy buildroot configs
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sed -i "s/###ROOTPASSWORD###/$password/g" target/buildroot/configs/pcengines_apu2_defconfig
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cp -R conf/* target/overlay # copy target system config files
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cp -R webpanel/* target/overlay/var/www/html # copy the webpanel
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cp -R update/update.sh target/overlay #copy the update script and certificate
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echo "[+] Writing flags"
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sed -i "s/##FLAG1##/$flag1/g" target/overlay/var/www/html/includes/config.php
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echo $flag2 > target/overlay/flag
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chmod 444 target/overlay/flag
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mkdir target/overlay/root
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chmod 700 target/overlay/root
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echo $flag3 > target/overlay/root/flag
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chmod 400 target/overlay/root/flag
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echo "[+] Building the keygen"
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mkdir -p target/overlay/usr/sbin
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2020-09-08 15:44:25 +02:00
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aarch64-linux-gnu-gcc -o target/overlay/usr/sbin/cfgbin keygen/keygen.c -static -lm
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2020-09-08 15:14:18 +02:00
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strip target/overlay/usr/sbin/cfgbin
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echo "[+] Generating Update Key"
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mkdir -p target/keys
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openssl genrsa -out target/keys/signingkey.pem 2048
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openssl rsa -in target/keys/signingkey.pem -outform PEM -pubout -out target/keys/signingpub.pem
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cp target/keys/signingpub.pem target/overlay/pub.pem
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echo "[+] Generating Monitoring SSH Key"
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ssh-keygen -t ecdsa -f target/keys/sshkey -q -N ""
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mkdir -p target/overlay/root/.ssh
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cp target/keys/sshkey target/overlay/root/.ssh/authorized_keys
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chmod -R 600 target/overlay/root/.ssh/
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echo "[+] Saving the root password"
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echo $password > target/keys/rootpassword
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echo "[+] Building the image"
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N=`grep -c '^processor' /proc/cpuinfo`
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cd target/buildroot
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make pcengines_apu2_defconfig
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make -j$N
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