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- # Use ubuntu 16.04
- FROM ubuntu:16.04
-
- RUN apt-get update --fix-missing && apt-get -y dist-upgrade --fix-missing --fix-broken
-
- # install socat editor ssh
- RUN apt-get install curl netcat-openbsd vim nano openssh-server socat lib32ncurses5 python python-pip python-dev iputils-ping -y
-
- RUN adduser --disabled-password --gecos "" ksl
- RUN echo "ksl:sebuahrahasiamas" | chpasswd
-
- ADD chall/. /chall
- WORKDIR /chall
- RUN cp /bin/ping /usr/local/bin/
-
- RUN echo 'KSL{U14RZ_M4M4NXX_KERENZX_4ANEETTT!!}' > /chall/flag.txt # ubah isi flagnya
-
- # Secure ENV
-
- RUN echo 'alias kill="echo no kill please!"' >> ~/.bashrc
- RUN chmod 700 /usr/bin/* /bin/* /dev/shm
- RUN chmod 755 /usr/bin/env /bin/dash /bin/bash /bin/sh /bin/nc /bin/cat /usr/bin/curl /usr/bin/groups /usr/bin/id /bin/ls /usr/bin/python /bin/ping
-
- RUN chmod 4755 /usr/local/bin/ping
-
- RUN chown root:ksl /chall/ping-service.py # ubah nama file
- RUN chmod 775 /chall/ping-service.py # ubah nama file
-
- # Run Service
-
- RUN echo '#!/bin/bash'"\n(socat TCP-LISTEN:7000,reuseaddr,fork EXEC:"/chall/ping-service.py,su=nobody")" > /var/tmp/.start.sh && chmod +x /var/tmp/.start.sh
-
- CMD ["/var/tmp/.start.sh"]
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