Browse Source

first commit

main
sose 4 months ago
commit
12f9c9bb93
  1. 2
      .gitignore
  2. 55
      image/Dockerfile
  3. 13
      image/banner
  4. 20
      image/bin/progress
  5. 58
      image/bin/submit
  6. 1
      image/clues/test.txt
  7. 12
      image/insults.txt
  8. 9
      image/package.list
  9. 33
      image/rules.md
  10. 13
      image/slbr.env
  11. 24
      image/suicidebash.bashrc
  12. 0
      log.txt
  13. 59
      new_image.sh
  14. 51
      readme.md
  15. 16
      reset.sh
  16. 1
      rules.md
  17. 1
      scoreboard.txt
  18. 86
      servers/deathlistener.sh
  19. 6
      servers/gamelog.sh
  20. 10
      servers/scoreboard.sh
  21. 5
      solutions.txt
  22. 22
      start.sh

2
.gitignore

@ -0,0 +1,2 @@
.*.swp
.*.swo

55
image/Dockerfile

@ -0,0 +1,55 @@
FROM debian:buster
ARG USERNAME
ARG HOST_IP
ARG SLBR_PORT
ARG INFO_PORT
ARG LOG_PORT
ARG SSHD_PORT
RUN (test -n "$USERNAME" || (echo "USERNAME not set" && false)) \
&& (test -n "$SLBR_PORT" || (echo "SLBR_PORT not set" && false)) \
&& (test -n "$INFO_PORT" || (echo "INFO_PORT not set" && false)) \
&& (test -n "$LOG_PORT" || (echo "LOG_PORT not set" && false)) \
&& (test -n "$HOST_IP" || (echo "HOST_IP not set" && false))
COPY --chown=root ./suicidebash.bashrc /etc/bash.bashrc
COPY --chown=root ./slbr.env /etc
COPY --chown=root ./package.list /package.list
COPY --chown=root ./insults.txt /insults.txt
COPY ./bin/progress /usr/local/bin/
COPY ./bin/submit /usr/local/bin/
COPY ./banner /etc/motd
COPY ./pubkey /pubkey
RUN apt remove bash-completion \
&& rm -rf /usr/share/bash-completion
RUN apt update \
&& apt install -y $(cat /package.list) \
&& rm /package.list
RUN sed -i "s/{{ HOST_IP }}/$HOST_IP/g" /etc/bash.bashrc /usr/local/bin/progress /usr/local/bin/submit \
&& sed -i "s/{{ SLBR_PORT }}/$SLBR_PORT/g" /etc/bash.bashrc /usr/local/bin/progress /usr/local/bin/submit \
&& sed -i "s/{{ INFO_PORT }}/$INFO_PORT/g" /etc/bash.bashrc /usr/local/bin/progress /usr/local/bin/submit \
&& sed -i "s/{{ LOG_PORT }}/$LOG_PORT/g" /etc/bash.bashrc /usr/local/bin/progress /usr/local/bin/submit \
&& mkdir /home/$USERNAME \
&& mkdir /run/sshd \
&& mkdir /home/$USERNAME/.ssh \
&& cat /pubkey > /home/$USERNAME/.ssh/authorized_keys \
&& rm /pubkey \
&& echo "PasswordAuthentication no" >> /etc/ssh/sshd_config \
&& echo "Port $SSHD_PORT" >> /etc/ssh/sshd_config
COPY ./clues /home/$USERNAME
COPY ./rules.md /home/$USERNAME
RUN useradd $USERNAME -d /home/$USERNAME \
&& chown -R $USERNAME:$USERNAME /home/$USERNAME \
&& chmod -R +x /usr/local/bin/ \
&& chsh $USERNAME -s /bin/bash
#USER $USERNAME
CMD ["/usr/sbin/sshd", "-D"]

13
image/banner

@ -0,0 +1,13 @@
Welcome to:
░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
░█▀▀░█░█░▀█▀░█▀▀░▀█▀░█▀▄░█▀▀░░░█░░░▀█▀░█▀█░█░█░█░█░░
░▀▀█░█░█░░█░░█░░░░█░░█░█░█▀▀░░░█░░░░█░░█░█░█░█░▄▀▄░░
░▀▀▀░▀▀▀░▀▀▀░▀▀▀░▀▀▀░▀▀░░▀▀▀░░░▀▀▀░▀▀▀░▀░▀░▀▀▀░▀░▀░░
░█▀▄░█▀█░▀█▀░▀█▀░█░░░█▀▀░░░█▀▄░█▀█░█░█░█▀█░█░░░█▀▀░░
░█▀▄░█▀█░░█░░░█░░█░░░█▀▀░░░█▀▄░█░█░░█░░█▀█░█░░░█▀▀░░
░▀▀░░▀░▀░░▀░░░▀░░▀▀▀░▀▀▀░░░▀░▀░▀▀▀░░▀░░▀░▀░▀▀▀░▀▀▀░░
░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
For rules, `cat ~/rules.md`
To submit your solution for a challenge, run `submit <solution number> "<your solution>"`
To see your current progress, run `progress`

20
image/bin/progress

@ -0,0 +1,20 @@
#!/bin/bash
scoreboard="$(nc -q0 -d {{ HOST_IP }} {{ INFO_PORT }})"
my_ip="$(ip addr | grep 'scope global eth0' | cut -f6 -d ' ')"
total_challenges="$(echo "$scoreboard" | head -n1)"
completed_challenges="$(
echo "$scoreboard" \
| grep "$my_ip" \
| cut -f2- -d ' ' \
| tr -d ' ' \
| tr ',' '\n' \
| sort \
| tr '\n' ',' \
| sed 's/,/, /g' \
| sed 's/^, //' \
| sed 's/, $//'
)"
num_completed="$(echo $completed_challenges | grep -oE '[0-9]' | wc -l)"
echo "There are $total_challenges total challenges"
echo "You have completed the following challenges: $completed_challenges"
echo "You have completed $num_completed of the $total_challenges total challenges"

58
image/bin/submit

@ -0,0 +1,58 @@
#!/bin/bash
help_text="
submit.sh - submit an slbr solution to be verified
usage: ./submit <challenge number> <solution>
for example: ./submit 3 \"this is the solution for challenge 3\"
"
challenge_no="$1"
submitted_solution="$2"
[ -z "$submitted_solution" ] && echo "$help_text" && exit
echo "Submitting \"$submitted_solution\" as the solution to challenge #$challenge_no..."
my_ip="$(ip addr | grep 'scope global eth0' | cut -f6 -d ' ')"
scoreboard="$(nc -q0 -d {{ HOST_IP }} {{ INFO_PORT }})"
prev_score="$(
echo "$scoreboard" \
| grep "$my_ip"
)"
max_score="$(echo "$scoreboard" | head -n1)"
current_score=""
echo "SOLUTION $challenge_no $submitted_solution" \
| nc -q0 {{ HOST_IP }} {{ SLBR_PORT }}
# give the server ample time to process the request
echo "Verifying..."
sleep 5
# we need to request the scoreboard twice here for the score to properly update
nc -q0 -d {{ HOST_IP }} {{ INFO_PORT }} > /dev/null
current_score="$(
nc -q0 -d {{ HOST_IP }} {{ INFO_PORT }} \
| grep "$my_ip"
)"
if [ "$prev_score" != "$current_score" ]
then
echo "w00t! You got the right answer!!!"
num_correct="$(
echo $current_score \
| grep -oE '[0-9],' \
| wc -l
)"
echo "$num_correct correct answers so far"
if [ "$num_correct" = "$max_score" ]
then
printf "\e[0;92]"
echo "Hey! thats all $max_score! that means YOU WIN!"
echo "!!!!!!!CONGRATULATIONS!!!!!!!"
printf "\e[0;91m THIS CONTAINER WILL NOW SELF DESTRUCT\e[0m\n"
fi
else
echo "|X_x| Your answer was rejected!!!."
fi

1
image/clues/test.txt

@ -0,0 +1 @@
ubj qb lbh fcryy ahzoref?

12
image/insults.txt

@ -0,0 +1,12 @@
Oops, looks like you misspelt something >:)
Where did you learn to type?
Are you on drugs?
My pet ferret can type better than you!
You type like i drive.
Do you think like you type?
stty: unknown mode: doofus
Maybe if you used more than just two fingers...
Have you considered trying to match wits with a rutabaga?
I've seen penguins that can type better than that.
Game over, man, game over.
https://ddg.gg/?q=free+online+typing+lessons

9
image/package.list

@ -0,0 +1,9 @@
netcat-openbsd
emacs-nox
curl
nano
vim
tmux
man
xxd
openssh-server

33
image/rules.md

@ -0,0 +1,33 @@
# PLAYING THE GAME
- Each game has a series of challenges to complete, users are provided with a
bash shell and a folder of clues.
- The challenges are numbered 1-X.
- Users must submit the solutions to each challenge to the admin, the first
user to submit correct solutions to each challenge will win the game.
- If at any point the user enters an invalid shell command, they will be
eliminated from the game.
- If you think you have the solution for a challenge, submit your answer using
the `submit` command in the format `submit <challenge #> <solution>`
- For example, you would run `submit 3 "the color pink"` to submit "the color
pink" as your solution for challenge #3 (quotes would not be included, and
are subject to normal bash escaping rules)
- At any time, you can run the `progress` command to see your progress in
completing the challenges
# DA RULES
- You may use the internet
- You may write scripts
- You may not use sh, you must use bash
- You may not install more packages
- You may not attempt to obtain root access
- You may not communicate with other players
- You may not interact or tamper with the containers or environments of other
users
- You may not interact or tamper with your own container
- You may not break out of your container and/or access the host system in any
way
- You may not nullify or remove the "Suicide Linux" mechanic in any way
- You may use any package already installed on the system provided its use does
not break any of the other rules
- For the love of god don't build a bot that just brute forces random strings
to try and get a correct answer

13
image/slbr.env

@ -0,0 +1,13 @@
handler_command='command_not_found_handle is a function
command_not_found_handle ()
{
echo "DEAD" | nc illegaldrugs.net 1337 & printf "\e[0;94m%s\e[0m\n" "$(shuf -n1 /insults.txt)";
printf "\e[0;91m\e[1mYOU HAVE BEEN ELIMINATED!\e[0m\n"
}'
# we can use the output format of `type` to determine if we are in a bash shell
# or not, as well an ensuring the instant death mechanic is enabled
if [ "$(type command_not_found_handle)" != "$handler_command" ]
then
echo "no."
exit
fi

24
image/suicidebash.bashrc

@ -0,0 +1,24 @@
# If not running interactively, don't do anything
[ -z "$PS1" ] && return
# set a fancy prompt (non-color, overwrite the one in /etc/profile)
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
# SLBR modifications
bind -u complete
function command_not_found_handle {
echo "DEAD" | nc {{ HOST_IP }} {{ SLBR_PORT }} &
printf "\e[0;94m%s\e[0m\n" "$(shuf -n1 /insults.txt)"
printf "\e[0;91m\e[1mYOU HAVE BEEN ELIMINATED!\e[0m\n"
}
function log_command {
echo "$(history 1)" | nc -q0 {{ HOST_IP }} {{ LOG_PORT }}
}
readonly -f command_not_found_handle
readonly -f log_command
readonly PROMPT_COMMAND=log_command
readonly ENV="/etc/slbr.env"; export ENV

0
log.txt

59
new_image.sh

@ -0,0 +1,59 @@
username="$1"
pubkey_path="$2"
slbr_port="1337"
info_port="1338"
log_port="1339"
user_sshd_port="5000"
container_id=""
container_ip=""
host_ip=""
[ -z "$1" ] && echo "please provide a username." && exit
[ -z "$2" ] && echo "please provide a pubkey file." && exit
get_user_sshd_port() {
listening_ports="$(ss -tuln \
| awk '{print $5}' \
| rev \
| cut -f1 -d ":" \
| rev
)"
if echo "$listening_ports" | grep -q "$user_sshd_port"
then
user_sshd_port="$(( user_sshd_port + 1 ))"
get_user_sshd_port
else
echo "$user_sshd_port"
fi
}
get_user_sshd_port
cp "$pubkey_path" image/pubkey
host_ip="$(
ip -br -4 addr \
| grep eth0 \
| awk '{print $3}' \
| cut -f 1 -d '/'
)"
docker build \
-t slbr:$username \
--build-arg USERNAME=$username \
--build-arg HOST_IP=$host_ip \
--build-arg SLBR_PORT=$slbr_port \
--build-arg INFO_PORT=$info_port \
--build-arg LOG_PORT=$log_port \
--build-arg SSHD_PORT=$user_sshd_port \
--label "SLBR User Container" \
./image
rm image/pubkey
echo "Starting container..."
container_id="$(docker run -p $user_sshd_port:$user_sshd_port -h slbr -d "slbr:$username")"
container_ip="$(
docker container inspect "$container_id" \
| jq '.[0].NetworkSettings.Networks.bridge.IPAddress'
)"
echo "Done!"
echo "connect using: ssh $username@$host_ip -p $user_sshd_port"

51
readme.md

@ -0,0 +1,51 @@
# SUICIDE LINUX BATTLE ROYALE
It's back, baby
coming soon! check #slbr on irc for updates!
typo? you're out.
when you play, you'll be dropped in a fresh vm. on the way to your goal, any
mistyped command will delete your vm and you'll be eliminated.
contact ~ben or sose on tilde.chat (in the #slbr channel) to sign up.
## How it works
- Each game has a series of challenges to complete, users are provided with a
bash shell and a folder of clues.
- The challenges are numbered 1-X.
- Users must submit the solutions to each challenge to the admin, the first
user to submit correct solutions to each challenge will win the game.
- If at any point the user enters an invalid shell command, they will be
eliminated from the game.
## Configuration
- Configuring a new set of challenges is as simple as editing the
`solutions.txt` file with their solutions, and providing new clues in the
`./image/clues` folder.
- In the `solutions.txt` file, the line number of each solution corresponds to
the challenge it is the solution for. Solutions may not take up multiple lines.
## Prerequisites
- docker
- pslist
- BSD style netcat (`netcat-openbsd` on debian)
## Setup
- Make sure your ports 1337, 1338 and 1339 are not exposed to the internet, as
SLBR will use them internally
- `mkdir /home/slbr-admin`
- `useradd slbr-admin -d /home/slbr-admin`
- `usermod -a -G docker slbr-admin`
- `sudo su slbr-admin`
- `newgrp docker`
- `cd`
- `git clone https://tildegit.org/tildeverse/SLBR`
- `cd SLBR`
- You are now ready to manage an slbr game
## Running the game
- run `./start.sh` to start the listeners for various game events
- run `./new_image.sh <user name> </path/to/pubkey>` to create a new user
- All game events and user commands will be logged to log.txt
- You can `./reset.sh` to cleanup after a game has finished

16
reset.sh

@ -0,0 +1,16 @@
#!/bin/sh
num_challenges="$(
wc -l solutions.txt \
| cut -f1 -d ' '
)"
docker ps \
-f label="SLBR User Container" \
--format "{{.ID}}" \
| xargs docker rm -f
docker images -a \
| grep ^slbr \
| awk '{print $3}' \
| xargs docker rmi -f
printf "$num_challenges\n" > scoreboard.txt
printf "" > log.txt

1
rules.md

@ -0,0 +1 @@
image/rules.md

1
scoreboard.txt

@ -0,0 +1 @@
5

86
servers/deathlistener.sh

@ -0,0 +1,86 @@
#!/bin/sh
# we will need the suicide bashrc to continuously write DEAD to the nc socket
# in case two messages are sent at the same time.
# this will not work if your slbr admin is not in the "docker" group
PORT="$1"
LOG="log.txt"
[ -z "$1" ] && echo "port?" && exit
docker_subnet_mask="$(
docker network inspect bridge \
| jq '.[0].IPAM.Config[0].Subnet' \
| tr -d '"' \
| cut -f2 -d '/'
)"
handle_packet() {
packet="$1"
message="$(echo $packet | cut -f3 -d '|')"
address="$(
echo "$packet" \
| cut -f2 -d '|' \
| cut -f3 -d ' '
)"
address="$address/$docker_subnet_mask"
if [ "$message" = "DEAD" ]
then
echo "Killing user with ip $address" >> $LOG
container_name="$(
docker network inspect bridge \
| jq \
'.[0].Containers
| map(select(.IPv4Address == "'"$address"'"))
| .[0].Name' \
| tr -d '"'
)"
docker rm -f "$container_name"
echo "killed container $container_name" >> $LOG
elif [ "$(echo $message | cut -f1 -d ' ')" = "SOLUTION" ]
then
submitted_solution="$(echo $message | cut -f3- -d ' ')"
challenge_no="$(echo $message | cut -f2 -d ' ')"
correct_solution="$(sed $challenge_no'q;d' solutions.txt)"
sed_escaped_address="$(echo $address | sed 's/\./\\./g')"
echo "$address submitted solution for challenge $challenge_no: $submitted_solution" >> $LOG
if [ "$submitted_solution" = "$correct_solution" ]
then
num_correct=""
echo "Solution was correct!" >> $LOG
grep -qE "^$address" scoreboard.txt \
|| echo "$address" >> scoreboard.txt
grep -qE "^$address .*$challenge_no," scoreboard.txt \
|| sed -i "s|$sed_escaped_address|$address $challenge_no,|" scoreboard.txt
num_correct="$(
grep -m1 -E "^$address" scoreboard.txt \
| grep -oE '[0-9],' \
| wc -l
)"
total_solutions="$(cat solutions.txt | wc -l)"
if [ $num_correct = $total_solutions ]
then
echo "$address HAS WON THE GAME!!!" >> $LOG
sleep 5
echo "Killing all continers..." >> $LOG
docker ps -aq --filter label="SLBR User Container" | xargs docker rm -f
exit
fi
echo "$num_correct correct answers so far" >> $LOG
fi
fi
}
echo "game server listening on $PORT"
while true
do
packet=$(nc -w 1 -W 1 -vlp $PORT 2>&1)
handle_packet "$(echo "$packet" | head -n 3 | tr '\n' '|')" &
done

6
servers/gamelog.sh

@ -0,0 +1,6 @@
#!/bin/sh
PORT="$1"
LOG="log.txt"
[ -z "$1" ] && echo "port?" && exit
echo "log server listening on $PORT" >> $LOG
nc -w1 -W1 -vlkp $PORT >> $LOG 2>&1

10
servers/scoreboard.sh

@ -0,0 +1,10 @@
#!/bin/sh
PORT="$1"
[ -z "$1" ] && echo "port?" && exit
echo "scoreboard server listening on $PORT"
while true
do
cat scoreboard.txt \
| nc -w 1 -W 1 -lp "$PORT"
echo "Got scoreboard request."
done

5
solutions.txt

@ -0,0 +1,5 @@
one
two
three
four
five

22
start.sh

@ -0,0 +1,22 @@
#!/bin/sh
LOG="log.txt"
death_pid=""
score_pid=""
log_pid=""
cleanup() {
rkill $death_pid >/dev/null 2>&1
rkill $score_pid >/dev/null 2>&1
rkill $log_pid >/dev/null 2>&1
}
trap 'cleanup' 1 2 3 9
servers/deathlistener.sh 1337 & death_pid="$!"
echo "death listener pid: $death_pid" >> "$LOG"
servers/scoreboard.sh 1338 & score_pid="$!"
echo "scoreboard server pid: $score_pid" >> "$LOG"
servers/gamelog.sh 1339 & log_pid="$!"
echo "log server pid: $log_pid" >> "$LOG"
printf "\e[0;91mReading log, exit to stop game\e[0m\n"
tail -f "$LOG"
Loading…
Cancel
Save