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heach23 | ||||||
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FTZ서버 구축 | ||||||
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http://www.hackerschool.org/HS_Boards/zboard.php?AllArticle=true&no=833 [복사]
Hit : 4840 Date : 2014/01/03 11:05
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| dolpin1402 | chmod 써보셨어요? | 2014/01/04 | |
| qkrguswhd2 | auto_script.sh Permission Denied 해결법 입니다. 거기 auto_script.sh 보면 레벨별로 분류가 되어 있는데... 일단 바이너리를 컴파일 하고 해당 바이너리에 권한을 부여하고 chattr +ai /bin/ExecuteMe 이렇게 되어있는 부분이 있습니다. chattr +ai 는 해당파일을 변조/삭제를 막는 명령어 입니다. 물론 루트여도 변조/삭제가 안됩니다. 음, 읽기전용파일이라 해야 하겠군요 ㅋ 허나 루트는 저 읽기전용 파일을 쓰기가 가능하도록 바꿔줄 수 있습니다 바로 chattr -ai /bin/ExecuteMe 이런식으로 보이시나요? 달라진 것이 ? +ai -ai 이 부분인데요~ +는 추가 -는 제가 i 가 바로 읽기+실행만 가능하도록 파일속정을 지정해주는 녀석입니다. 음 아래 내용은 제가 만들었던 FTZ 지우는 스크립트 입니다. ftz ~ # more /mnt/cdrom/AUTO_SCRIPT/eraser_script.sh #!/bin/bash cp -rf /etc/oldconfig/passwd /etc/passwd cp -rf /etc/oldconfig/shadow /etc/shadow cp -rf /etc/oldconfig/group /etc/group cp -rf /etc/oldconfig/shells /etc/shells cp -rf /etc/oldconfig/securetty /etc/securetty cd /home/ rm -rf level* clear guest trainer* # level1 chattr -ai /bin/ExecuteMe rm -rf /bin/ExecuteMe # level2 chattr -ai /usr/bin/editor rm -rf /bin/vi rm -rf /bin/editor # level3 chattr -ai /bin/autodig rm -rf /bin/autodig # level4 chattr -ai /etc/xinetd.d/backdoor rm -rf /etc/xinetd.d/backdoor /etc/init.d/xinetd restart # level5 chattr -ai /usr/bin/level5 rm -rf /usr/bin/level5 # level7 chattr -ai /bin/level7 rm -rf /bin/level7 # level8 chattr -ai /etc/rc.d/found.txt rm -rf /etc/rc.d/ # level9 chattr -ai /usr/bin/bof rm -rf -ai /usr/bin/bof # level10 # My-pass rm -rf /bin/my-pass # for restarting -->add crontab rm -rf /etc/rc.local # server banner cp -rf /etc/oldconfig/issue.net /etc/issue.net # for korean -- 필요할 경우 주석 해제 #rm -rf /etc/skel/.bashrc #mv /etc/skel/bash_old /etc/skel/.bashrc # establish telnetd cp -rf /etc/oldconfig/xinetd.d/telnet* /etc/xinetd.d/ /etc/init.d/xinetd restart 뭐 이런식이에요~ chattr -ai 바이러니 rm -rf 바이너리 끝~~~ ㅎ |
2014/01/14 | |
| qkrguswhd2 | 추가로 .....ㅎㅎ 이건 제가 현제 젠투라는 페키지에 맞게 수정한 auto_script.sh 입니다 저는 혹시모를 FTZ의 완전한 제거를 위해 기존 설정파일들을 백업하는 명령어를 몇줄 추가하였습니다. ftz ~ # more /mnt/cdrom/AUTO_SCRIPT/auto_script.sh #!/bin/bash mkdir -p /etc/oldconfig cp -rf /etc/passwd /etc/oldconfig/ cat /mnt/cdrom/USER_INFO/passwd >> /etc/passwd cp -rf /etc/shadowd /etc/oldconfig/ cat /mnt/cdrom/USER_INFO/shadow >> /etc/shadow cp -rf /etc/group /etc/oldconfig/ cat /mnt/cdrom/USER_INFO/group >> /etc/group cp -rf /etc/shells /etc/oldconfig/ cat /mnt/cdrom/ETC/shells >> /etc/shells cp -rf /etc/securetty /etc/oldconfig rm -rf /etc/securetty cd /home/ cp -rf /mnt/cdrom/HOME/* . tar xvfzp home.gzip rm -rf home.gzip # level1 gcc -o /bin/ExecuteMe /mnt/cdrom/LEVELS/LEVEL1/ExcuteMe.c chown level2:level1 /bin/ExecuteMe chmod u+s /bin/ExecuteMe chmod o-rwx /bin/ExecuteMe chattr +ai /bin/ExecuteMe # level2 cp -rf /usr/bin/vi /bin/vi gcc -o /usr/bin/editor /mnt/cdrom/LEVELS/LEVEL2/editor.c chown level3:level2 /usr/bin/editor chmod u+s /usr/bin/editor chmod o-rwx /usr/bin/editor chattr +ai /usr/bin/editor # level3 gcc -o /bin/autodig /mnt/cdrom/LEVELS/LEVEL3/autodig.c chown level4:level3 /bin/autodig chmod u+s /bin/autodig chmod o-rwx /bin/autodig chattr +ai /bin/autodig # level4 cp /mnt/cdrom/LEVELS/LEVEL4/backdoor /etc/xinetd.d/ chown root:level4 /etc/xinetd.d/backdoor chattr +ai /etc/xinetd.d/backdoor cp -rf /bin/ls /home/level4/tmp/backdoor chown level4:level4 /home/level4/tmp/backdoor /etc/init.d/xinetd restart rm -rf /home/level4/tmp/backdoor # level5 gcc -o /usr/bin/level5 /mnt/cdrom/LEVELS/LEVEL5/level5.c chown level6:level5 /usr/bin/level5 chmod g-r /usr/bin/level5 chmod u+s /usr/bin/level5 chmod o-rwx /usr/bin/level5 chattr +ai /usr/bin/level5 # level7 gcc -o /bin/level7 /mnt/cdrom/LEVELS/LEVEL7/level7.c chown level8:level7 /bin/level7 chmod g-r /bin/level7 chmod u+s /bin/level7 chmod o-rwx /bin/level7 chattr +ai /bin/level7 # level8 mkdir -p /etc/rc.d/ cp /mnt/cdrom/LEVELS/LEVEL8/found.txt /etc/rc.d/found.txt chown root:level8 /etc/rc.d/found.txt chmod o-rwx /etc/rc.d/found.txt chattr +ai /etc/rc.d/found.txt # level9 gcc -o /usr/bin/bof /mnt/cdrom/LEVELS/LEVEL9/bof.c chown level10:level9 /usr/bin/bof chmod g-r /usr/bin/bof chmod u+s /usr/bin/bof chmod o-rwx /usr/bin/bof chattr +ai /usr/bin/bof # level10 # -- 기존에는 /level10을 컴파일 하지 않았다는....... gcc -o /home/level10/program/level10 /mnt/cdrom/LEVELS/LEVEL10/level10.c chown level10:level10 /home/level10/program/level10 chmod o-rwx /home/level10/program/level10 /home/level10/program/level10 # My-pass gcc -o /bin/my-pass /mnt/cdrom/ETC/my-pass.c chmod o-rw /bin/my-pass # for restarting -->add crontab #cp -rf /mnt/cdrom/ETC/rc.local /etc/rc.local # crontab crontab /mnt/cdrom/ETC/cron_root # server banner cp -rf /etc/issue.net /etc/oldconfig/ cp -rf /mnt/cdrom/ETC/issue.net /etc/issue.net # for korean -- 필요할 경우 주석 해제 #cp -rf /etc/skel/.bashrc /etc/skel/bash_old #cp /mnt/cdrom/ETC/bashrc /etc/skel/.bashrc # establish telnetd mkdir -p /etc/oldconfig/xinetd.d/ cp -rf /etc/xinetd.d/telnet* /etc/oldconfig/xinetd.d/ cp -rf /mnt/cdrom/ETC/telnet* /etc/xinetd.d/ etc/init.d/xinetd restart |
2014/01/14 | |
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