{"id":523,"date":"2024-03-14T15:29:00","date_gmt":"2024-03-14T07:29:00","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=523"},"modified":"2024-03-14T15:29:00","modified_gmt":"2024-03-14T07:29:00","slug":"linux%e5%ba%94%e6%80%a5%e5%93%8d%e5%ba%94%e5%85%a5%e4%be%b5%e6%8e%92%e6%9f%a5%e6%80%9d%e8%b7%af","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/14\/linux%e5%ba%94%e6%80%a5%e5%93%8d%e5%ba%94%e5%85%a5%e4%be%b5%e6%8e%92%e6%9f%a5%e6%80%9d%e8%b7%af\/","title":{"rendered":"Linux\u5e94\u6025\u54cd\u5e94\u5165\u4fb5\u6392\u67e5\u601d\u8def"},"content":{"rendered":"
\n

\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 \u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n

\"\"<\/p>\n

\u5404\u4f4d\u597d \u53c8\u89c1\u9762\u4e86 \u6211\u662f\u66f9\u64cd \u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u65b0\u7684\u6559\u7a0b<\/p>\n

\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n

1\u3001\u7528\u6237\u4fe1\u606f\u6587\u4ef6\/etc\/passwd\nroot:x:0:0:root:\/root:\/bin\/bash\naccount:password:UID:GID:GECOS:directory:shell\n\u7528\u6237\u540d\uff1a\u5bc6\u7801\uff1a\u7528\u6237ID\uff1a\u7ec4ID\uff1a\u7528\u6237\u8bf4\u660e\uff1a\u5bb6\u76ee\u5f55\uff1a\u767b\u9646\u4e4b\u540eshell\n\u6ce8\u610f\uff1a\u65e0\u5bc6\u7801\u53ea\u5141\u8bb8\u672c\u673a\u767b\u9646\uff0c\u8fdc\u7a0b\u4e0d\u5141\u8bb8\u767b\u9646\n\u200b\n2\u3001\u5f71\u5b50\u6587\u4ef6\/etc\/shadow\nroot:$6$oGs1PqhL2p3ZetrE$X7o7bzoouHQVSEmSgsYN5UD4.kMHx6qgbTqwNVC5oOAouXvcjQSt.Ft7ql1WpkopY0UV9ajBwUt1DpYxTCVvI\/:16809:0:99999:7:::\n\u7528\u6237\u540d\uff1a\u52a0\u5bc6\u5bc6\u7801\uff1a\u5bc6\u7801\u6700\u540e\u4e00\u6b21\u4fee\u6539\u65e5\u671f\uff1a\u4e24\u6b21\u5bc6\u7801\u7684\u4fee\u6539\u65f6\u95f4\u95f4\u9694\uff1a\u5bc6\u7801\u6709\u6548\u671f\uff1a\u5bc6\u7801\u4fee\u6539\u5230\u671f\u5230\u7684\u8b66\u544a\u5929\u6570\uff1a\u5bc6\u7801\u8fc7\u671f\u4e4b\u540e\u7684\u5bbd\u9650\u5929\u6570\uff1a\u8d26\u53f7\u5931\u6548\u65f6\u95f4\uff1a\u4fdd\u7559<\/pre>\n
0x00 \u524d\u8a00
\n\u5f53\u4f01\u4e1a\u53d1\u751f\u9ed1\u5ba2\u5165\u4fb5\u3001\u7cfb\u7edf\u5d29\u6e83\u6216\u5176\u5b83\u5f71\u54cd\u4e1a\u52a1\u6b63\u5e38\u8fd0\u884c\u7684\u5b89\u5168\u4e8b\u4ef6\u65f6\uff0c\u6025\u9700\u7b2c\u4e00\u65f6\u95f4\u8fdb\u884c\u5904\u7406\uff0c\u4f7f\u4f01\u4e1a\u7684\u7f51\u7edc\u4fe1\u606f\u7cfb\u7edf\u5728\u6700\u77ed\u65f6\u95f4\u5185\u6062\u590d\u6b63\u5e38\u5de5\u4f5c\uff0c\u8fdb\u4e00\u6b65\u67e5\u627e\u5165\u4fb5\u6765\u6e90\uff0c\u8fd8\u539f\u5165\u4fb5\u4e8b\u6545\u8fc7\u7a0b\uff0c\u540c\u65f6\u7ed9\u51fa\u89e3\u51b3\u65b9\u6848\u4e0e\u9632\u8303\u63aa\u65bd\uff0c\u4e3a\u4f01\u4e1a\u633d\u56de\u6216\u51cf\u5c11\u7ecf\u6d4e\u635f\u5931\u3002
\n\u9488\u5bf9\u5e38\u89c1\u7684\u653b\u51fb\u4e8b\u4ef6\uff0c\u7ed3\u5408\u5de5\u4f5c\u4e2d\u5e94\u6025\u54cd\u5e94\u4e8b\u4ef6\u5206\u6790\u548c\u89e3\u51b3\u7684\u65b9\u6cd5\uff0c\u603b\u7ed3\u4e86\u4e00\u4e9bLinux\u670d\u52a1\u5668\u5165\u4fb5\u6392\u67e5\u7684\u601d\u8def\u3002  <\/p>\n
0x01 \u5165\u4fb5\u6392\u67e5\u601d\u8def
\n\u4e00\u3001\u8d26\u53f7\u5b89\u5168
\n\u57fa\u672c\u4f7f\u7528\uff1a  <\/p>\n
who     \u67e5\u770b\u5f53\u524d\u767b\u5f55\u7528\u6237\uff08tty\u672c\u5730\u767b\u9646  pts\u8fdc\u7a0b\u767b\u5f55\uff09\nw       \u67e5\u770b\u7cfb\u7edf\u4fe1\u606f\uff0c\u60f3\u77e5\u9053\u67d0\u4e00\u65f6\u523b\u7528\u6237\u7684\u884c\u4e3a\nuptime  \u67e5\u770b\u767b\u9646\u591a\u4e45\u3001\u591a\u5c11\u7528\u6237\uff0c\u8d1f\u8f7d<\/pre>\n
1\u3001\u67e5\u8be2\u7279\u6743\u7528\u6237\u7279\u6743\u7528\u6237(uid \u4e3a0)\n[root@localhost ~]# awk -F: '$3==0{print $1}' \/etc\/passwd\n2\u3001\u67e5\u8be2\u53ef\u4ee5\u8fdc\u7a0b\u767b\u5f55\u7684\u5e10\u53f7\u4fe1\u606f\n[root@localhost ~]# awk '\/$1|$6\/{print $1}' \/etc\/shadow\n3\u3001\u9664root\u5e10\u53f7\u5916\uff0c\u5176\u4ed6\u5e10\u53f7\u662f\u5426\u5b58\u5728sudo\u6743\u9650\u3002\u5982\u975e\u7ba1\u7406\u9700\u8981\uff0c\u666e\u901a\u5e10\u53f7\u5e94\u5220\u9664sudo\u6743\u9650\n[root@localhost ~]# more \/etc\/sudoers | grep -v \"^#|^$\" | grep \"ALL=(ALL)\"\n4\u3001\u7981\u7528\u6216\u5220\u9664\u591a\u4f59\u53ca\u53ef\u7591\u7684\u5e10\u53f7\n    usermod -L user    \u7981\u7528\u5e10\u53f7\uff0c\u5e10\u53f7\u65e0\u6cd5\u767b\u5f55\uff0c\/etc\/shadow\u7b2c\u4e8c\u680f\u4e3a!\u5f00\u5934\n    userdel user       \u5220\u9664user\u7528\u6237\n    userdel -r user    \u5c06\u5220\u9664user\u7528\u6237\uff0c\u5e76\u4e14\u5c06\/home\u76ee\u5f55\u4e0b\u7684user\u76ee\u5f55\u4e00\u5e76\u5220\u9664<\/pre>\n
\u901a\u8fc7.bash_history\u67e5\u770b\u5e10\u53f7\u6267\u884c\u8fc7\u7684\u7cfb\u7edf\u547d\u4ee4\n1\u3001root\u7684\u5386\u53f2\u547d\u4ee4\nhistroy\n2\u3001\u6253\u5f00\/home\u5404\u5e10\u53f7\u76ee\u5f55\u4e0b\u7684.bash_history\uff0c\u67e5\u770b\u666e\u901a\u5e10\u53f7\u7684\u5386\u53f2\u547d\u4ee4\n\u200b\n\u4e3a\u5386\u53f2\u7684\u547d\u4ee4\u589e\u52a0\u767b\u5f55\u7684IP\u5730\u5740\u3001\u6267\u884c\u547d\u4ee4\u65f6\u95f4\u7b49\u4fe1\u606f\uff1a\n1\uff09\u4fdd\u5b581\u4e07\u6761\u547d\u4ee4\nsed -i 's\/^HISTSIZE=1000\/HISTSIZE=10000\/g' \/etc\/profile\n2\uff09\u5728\/etc\/profile\u7684\u6587\u4ef6\u5c3e\u90e8\u6dfb\u52a0\u5982\u4e0b\u884c\u6570\u914d\u7f6e\u4fe1\u606f\uff1a\n######jiagu history xianshi#########\nUSER_IP=`who -u am i 2>\/dev\/null | awk '{print $NF}' | sed -e 's\/[()]\/\/g'`\nif [ \"$USER_IP\" = \"\" ]\nthen\nUSER_IP=`hostname`\nfi\nexport HISTTIMEFORMAT=\"%F %T $USER_IP `whoami` \"\nshopt -s histappend\nexport PROMPT_COMMAND=\"history -a\"\n######### jiagu history xianshi ##########\n3\uff09source \/etc\/profile\u8ba9\u914d\u7f6e\u751f\u6548\n\u200b\n\u751f\u6210\u6548\u679c\uff1a 1  2018-07-10 19:45:39 192.168.204.1 root source \/etc\/profile\n\u200b\n3\u3001\u5386\u53f2\u64cd\u4f5c\u547d\u4ee4\u7684\u6e05\u9664\uff1ahistory -c\n\u4f46\u6b64\u547d\u4ee4\u5e76\u4e0d\u4f1a\u6e05\u9664\u4fdd\u5b58\u5728\u6587\u4ef6\u4e2d\u7684\u8bb0\u5f55\uff0c\u56e0\u6b64\u9700\u8981\u624b\u52a8\u5220\u9664.bash_profile\u6587\u4ef6\u4e2d\u7684\u8bb0\u5f55\u3002<\/pre>\n
\u8fdb\u5165\u7528\u6237\u76ee\u5f55\u4e0b\ncat .bash_history >> history.txt<\/pre>\n
netstat -antlp|more\n\u200b\n\u67e5\u770b\u4e0bpid\u6240\u5bf9\u5e94\u7684\u8fdb\u7a0b\u6587\u4ef6\u8def\u5f84\uff0c\n\u8fd0\u884cls -l \/proc\/$PID\/exe\u6216file \/proc\/$PID\/exe\uff08$PID \u4e3a\u5bf9\u5e94\u7684pid \u53f7\uff09<\/pre>\n
\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"<\/p>\n
ps aux | grep pid <\/pre>\n
vi  \/etc\/inittab\nid=3\uff1ainitdefault  \u7cfb\u7edf\u5f00\u673a\u540e\u76f4\u63a5\u8fdb\u5165\u54ea\u4e2a\u8fd0\u884c\u7ea7\u522b<\/pre>\n
\u5165\u4fb5\u6392\u67e5\uff1a  <\/p>\n
\u4e8c\u3001\u5386\u53f2\u547d\u4ee4
\n\u57fa\u672c\u4f7f\u7528\uff1a
\n\u5165\u4fb5\u6392\u67e5\uff1a  <\/p>\n
\u4e09\u3001\u7aef\u53e3
\n\u4f7f\u7528netstat \u7f51\u7edc\u8fde\u63a5\u547d\u4ee4\uff0c\u5206\u6790\u53ef\u7591\u7aef\u53e3\u3001IP\u3001PID  <\/p>\n
\u56db\u3001\u8fdb\u7a0b
\n\u4f7f\u7528ps\u547d\u4ee4\uff0c\u5206\u6790\u8fdb\u7a0b  <\/p>\n
\u4e94\u3001\u5f00\u673a\u542f\u52a8\u9879
\n\u57fa\u672c\u4f7f\u7528\uff1a
\n\u7cfb\u7edf\u8fd0\u884c\u7ea7\u522b\u793a\u610f\u56fe\uff1a
\n\u8fd0\u884c\u7ea7\u522b\u542b\u4e49
\n\u5173\u673a
\n\u5355\u7528\u6237\u6a21\u5f0f\uff0c\u53ef\u4ee5\u60f3\u8c61\u4e3awindows\u7684\u5b89\u5168\u6a21\u5f0f\uff0c\u4e3b\u8981\u7528\u4e8e\u7cfb\u7edf\u4fee\u590d
\n\u4e0d\u5b8c\u5168\u7684\u547d\u4ee4\u884c\u6a21\u5f0f\uff0c\u4e0d\u542bNFS\u670d\u52a1
\n\u5b8c\u5168\u7684\u547d\u4ee4\u884c\u6a21\u5f0f\uff0c\u5c31\u662f\u6807\u51c6\u5b57\u7b26\u754c\u9762
\n\u7cfb\u7edf\u4fdd\u7559
\n\u56fe\u5f62\u6a21\u5f0f
\n\u91cd\u542f\u52a8
\n\u67e5\u770b\u8fd0\u884c\u7ea7\u522b\u547d\u4ee4runlevel
\n\u7cfb\u7edf\u9ed8\u8ba4\u5141\u8bb8\u7ea7\u522b  <\/p>\n
\/etc\/rc.local\n\/etc\/rc.d\/rc[0~6].d<\/pre>\n
\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"<\/p>\n
root@localhost ~]# ln -s \/etc\/init.d\/sshd \/etc\/rc.d\/rc3.d\/S100ssh<\/pre>\n
\/var\/spool\/cron\/* \n\/etc\/crontab\n\/etc\/cron.d\/*\n\/etc\/cron.daily\/* \n\/etc\/cron.hourly\/* \n\/etc\/cron.monthly\/*\n\/etc\/cron.weekly\/\n\/etc\/anacrontab\n\/var\/spool\/anacron\/*<\/pre>\n
\u5f00\u673a\u542f\u52a8\u914d\u7f6e\u6587\u4ef6
\n\u4f8b\u5b50:\u5f53\u6211\u4eec\u9700\u8981\u5f00\u673a\u542f\u52a8\u81ea\u5df1\u7684\u811a\u672c\u65f6\uff0c\u53ea\u9700\u8981\u5c06\u53ef\u6267\u884c\u811a\u672c\u4e22\u5728\/etc\/init.d\u76ee\u5f55\u4e0b\uff0c\u7136\u540e\u5728\/etc\/rc.d\/rc*.d\u4e2d\u5efa\u7acb\u8f6f\u94fe\u63a5\u5373\u53ef
\n\u6b64\u5904sshd\u662f\u5177\u4f53\u670d\u52a1\u7684\u811a\u672c\u6587\u4ef6\uff0cS100ssh\u662f\u5176\u8f6f\u94fe\u63a5\uff0cS\u5f00\u5934\u4ee3\u8868\u52a0\u8f7d\u65f6\u81ea\u542f\u52a8\uff1b\u5982\u679c\u662fK\u5f00\u5934\u7684\u811a\u672c\u6587\u4ef6\uff0c\u4ee3\u8868\u8fd0\u884c\u7ea7\u522b\u52a0\u8f7d\u65f6\u9700\u8981\u5173\u95ed\u7684\u3002
\n\u5165\u4fb5\u6392\u67e5\uff1a
\n\u542f\u52a8\u9879\u6587\u4ef6\uff1amore \/etc\/rc.local\/etc\/rc.d\/rc[0~6].dls -l \/etc\/rc.d\/rc3.d\/  <\/p>\n
\u516d\u3001\u5b9a\u65f6\u4efb\u52a1
\n\u57fa\u672c\u4f7f\u7528
\n1\u3001\u5229\u7528crontab\u521b\u5efa\u8ba1\u5212\u4efb\u52a1
\ncrontab -l \u5217\u51fa\u67d0\u4e2a\u7528\u6237cron\u670d\u52a1\u7684\u8be6\u7ec6\u5185\u5bb9
\nTips\uff1a\u9ed8\u8ba4\u7f16\u5199\u7684crontab\u6587\u4ef6\u4f1a\u4fdd\u5b58\u5728 (\/var\/spool\/cron\/\u7528\u6237\u540d \u4f8b\u5982: \/var\/spool\/cron\/root  crontab -r \u5220\u9664\u6bcf\u4e2a\u7528\u6237cront\u4efb\u52a1(\u8c28\u614e\uff1a\u5220\u9664\u6240\u6709\u7684\u8ba1\u5212\u4efb\u52a1)  crontab -e \u4f7f\u7528\u7f16\u8f91\u5668\u7f16\u8f91\u5f53\u524d\u7684crontab\u6587\u4ef6  \u5982\uff1a*\/1 * * * * echo “hello world” >> \/tmp\/test.txt \u6bcf\u5206\u949f\u5199\u5165\u6587\u4ef6
\n2\u3001\u5229\u7528anacron\u5b9e\u73b0\u5f02\u6b65\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6
\n\u6bcf\u5929\u8fd0\u884c \/home\/backup.sh\u811a\u672c\uff1avi \/etc\/anacrontab@daily 10 example.daily \/bin\/bash \/home\/backup.sh
\n\u5f53\u673a\u5668\u5728 backup.sh \u671f\u671b\u88ab\u8fd0\u884c\u65f6\u662f\u5173\u673a\u7684\uff0canacron\u4f1a\u5728\u673a\u5668\u5f00\u673a\u5341\u5206\u949f\u4e4b\u540e\u8fd0\u884c\u5b83\uff0c\u800c\u4e0d\u7528\u518d\u7b49\u5f85 7\u5929\u3002
\n\u5165\u4fb5\u6392\u67e5
\n\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u76ee\u5f55\u4e2d\u662f\u5426\u5b58\u5728\u6076\u610f\u811a\u672c  <\/p>\n
\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"<\/p>\n
 more \/etc\/cron.daily\/*  \u67e5\u770b\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6<\/pre>\n
chkconfig [--level \u8fd0\u884c\u7ea7\u522b] [\u72ec\u7acb\u670d\u52a1\u540d] [on|off]\nchkconfig \u2013level  2345 httpd on  \u5f00\u542f\u81ea\u542f\u52a8\nchkconfig httpd on \uff08\u9ed8\u8ba4level\u662f2345\uff09<\/pre>\n
\u4fee\u6539\/etc\/re.d\/rc.local \u6587\u4ef6  \n\u52a0\u5165 \/etc\/init.d\/httpd start<\/pre>\n
chkconfig  --list  \u67e5\u770b\u670d\u52a1\u81ea\u542f\u52a8\u72b6\u6001\uff0c\u53ef\u4ee5\u770b\u5230\u6240\u6709\u7684RPM\u5305\u5b89\u88c5\u7684\u670d\u52a1\nps aux | grep crond \u67e5\u770b\u5f53\u524d\u670d\u52a1\n\u200b\n\u7cfb\u7edf\u57283\u4e0e5\u7ea7\u522b\u4e0b\u7684\u542f\u52a8\u9879 \n\u4e2d\u6587\u73af\u5883\nchkconfig --list | grep \"3:\u542f\u7528|5:\u542f\u7528\"\n\u82f1\u6587\u73af\u5883\nchkconfig --list | grep \"3:on|5:on\"<\/pre>\n
\u5c0f\u6280\u5de7\uff1a  <\/p>\n
\u4e03\u3001\u670d\u52a1
\n\u670d\u52a1\u81ea\u542f\u52a8
\n\u7b2c\u4e00\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a
\n\u7b2c\u4e8c\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a
\n\u7b2c\u4e09\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a
\n\u4f7f\u7528ntsysv\u547d\u4ee4\u7ba1\u7406\u81ea\u542f\u52a8\uff0c\u53ef\u4ee5\u7ba1\u7406\u72ec\u7acb\u670d\u52a1\u548cxinetd\u670d\u52a1\u3002
\n\u5165\u4fb5\u6392\u67e5
\n1\u3001\u67e5\u8be2\u5df2\u5b89\u88c5\u7684\u670d\u52a1\uff1a
\nRPM\u5305\u5b89\u88c5\u7684\u670d\u52a1  <\/p>\n
\u67e5\u770b\u670d\u52a1\u5b89\u88c5\u4f4d\u7f6e \uff0c\u4e00\u822c\u662f\u5728\/user\/local\/\nservice httpd start\n\u641c\u7d22\/etc\/rc.d\/init.d\/  \u67e5\u770b\u662f\u5426\u5b58\u5728<\/pre>\n
\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"<\/p>\n
\u6e90\u7801\u5305\u5b89\u88c5\u7684\u670d\u52a1  <\/p>\n
\u516b\u3001\u7cfb\u7edf\u65e5\u5fd7
\n\u65e5\u5fd7\u9ed8\u8ba4\u5b58\u653e\u4f4d\u7f6e\uff1a\/var\/log\/
\n\u67e5\u770b\u65e5\u5fd7\u914d\u7f6e\u60c5\u51b5\uff1amore \/etc\/rsyslog.conf
\n\u65e5\u5fd7\u6587\u4ef6\u8bf4\u660e
\n\/var\/log\/cron  \u8bb0\u5f55\u4e86\u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u76f8\u5173\u7684\u65e5\u5fd7
\n\/var\/log\/cups  \u8bb0\u5f55\u6253\u5370\u4fe1\u606f\u7684\u65e5\u5fd7
\n\/var\/log\/dmesg  \u8bb0\u5f55\u4e86\u7cfb\u7edf\u5728\u5f00\u673a\u65f6\u5185\u6838\u81ea\u68c0\u7684\u4fe1\u606f\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528dmesg\u547d\u4ee4\u76f4\u63a5\u67e5\u770b\u5185\u6838\u81ea\u68c0\u4fe1\u606f
\n\/var\/log\/mailog  \u8bb0\u5f55\u90ae\u4ef6\u4fe1\u606f
\n\/var\/log\/message  \u8bb0\u5f55\u7cfb\u7edf\u91cd\u8981\u4fe1\u606f\u7684\u65e5\u5fd7\u3002\u8fd9\u4e2a\u65e5\u5fd7\u6587\u4ef6\u4e2d\u4f1a\u8bb0\u5f55Linux\u7cfb\u7edf\u7684\u7edd\u5927\u591a\u6570\u91cd\u8981\u4fe1\u606f\uff0c\u5982\u679c\u7cfb\u7edf\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u9996\u5148\u8981\u68c0\u67e5\u7684\u5c31\u5e94\u8be5\u662f\u8fd9\u4e2a\u65e5\u5fd7\u6587\u4ef6
\n\/var\/log\/btmp  \u8bb0\u5f55\u9519\u8bef\u767b\u5f55\u65e5\u5fd7\uff0c\u8fd9\u4e2a\u6587\u4ef6\u662f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4e0d\u80fd\u76f4\u63a5vi\u67e5\u770b\uff0c\u800c\u8981\u4f7f\u7528lastb\u547d\u4ee4\u67e5\u770b
\n\/var\/log\/lastlog  \u8bb0\u5f55\u7cfb\u7edf\u4e2d\u6240\u6709\u7528\u6237\u6700\u540e\u4e00\u6b21\u767b\u5f55\u65f6\u95f4\u7684\u65e5\u5fd7\uff0c\u8fd9\u4e2a\u6587\u4ef6\u662f\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4e0d\u80fd\u76f4\u63a5vi\uff0c\u800c\u8981\u4f7f\u7528lastlog\u547d\u4ee4\u67e5\u770b
\n\/var\/log\/wtmp  \u6c38\u4e45\u8bb0\u5f55\u6240\u6709\u7528\u6237\u7684\u767b\u5f55\u3001\u6ce8\u9500\u4fe1\u606f\uff0c\u540c\u65f6\u8bb0\u5f55\u7cfb\u7edf\u7684\u542f\u52a8\u3001\u91cd\u542f\u3001\u5173\u673a\u4e8b\u4ef6\u3002\u540c\u6837\u8fd9\u4e2a\u6587\u4ef6\u4e5f\u662f\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6587\u4ef6\uff0c\u4e0d\u80fd\u76f4\u63a5vi\uff0c\u800c\u9700\u8981\u4f7f\u7528last\u547d\u4ee4\u6765\u67e5\u770b  <\/p>\n
\u200b\n1\u3001\u5b9a\u4f4d\u6709\u591a\u5c11IP\u5728\u7206\u7834\u4e3b\u673a\u7684root\u5e10\u53f7\uff1a    \ngrep \"Failed password for root\" \/var\/log\/secure | awk '{print $11}' | sort | uniq -c | sort -nr | more\n\u200b\n\u5b9a\u4f4d\u6709\u54ea\u4e9bIP\u5728\u7206\u7834\uff1a\ngrep \"Failed password\" \/var\/log\/secure|grep -E -o \"(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\"|uniq -c\n\u200b\n\u7206\u7834\u7528\u6237\u540d\u5b57\u5178\u662f\u4ec0\u4e48\uff1f\n grep \"Failed password\" \/var\/log\/secure|perl -e 'while($_=){ \/for(.*?) from\/; print \"$1n\";}'|uniq -c|sort -nr\n \n2\u3001\u767b\u5f55\u6210\u529f\u7684IP\u6709\u54ea\u4e9b\uff1a   \ngrep \"Accepted \" \/var\/log\/secure | awk '{print $11}' | sort | uniq -c | sort -nr | more\n\u200b\n\u767b\u5f55\u6210\u529f\u7684\u65e5\u671f\u3001\u7528\u6237\u540d\u3001IP\uff1a\ngrep \"Accepted \" \/var\/log\/secure | awk '{print $1,$2,$3,$9,$11}' \n\u200b\n3\u3001\u589e\u52a0\u4e00\u4e2a\u7528\u6237kali\u65e5\u5fd7\uff1a\nJul 10 00:12:15 localhost useradd[2382]: new group: name=kali, GID=1001\nJul 10 00:12:15 localhost useradd[2382]: new user: name=kali, UID=1001, GID=1001, home=\/home\/kali\n, shell=\/bin\/bash\nJul 10 00:12:58 localhost passwd: pam_unix(passwd:chauthtok): password changed for kali\n#grep \"useradd\" \/var\/log\/secure \n\u200b\n4\u3001\u5220\u9664\u7528\u6237kali\u65e5\u5fd7\uff1a\nJul 10 00:14:17 localhost userdel[2393]: delete user 'kali'\nJul 10 00:14:17 localhost userdel[2393]: removed group 'kali' owned by 'kali'\nJul 10 00:14:17 localhost userdel[2393]: removed shadow group 'kali' owned by 'kali'\n# grep \"userdel\" \/var\/log\/secure\n\u200b\n5\u3001su\u5207\u6362\u7528\u6237\uff1a\nJul 10 00:38:13 localhost su: pam_unix(su-l:session): session opened for user good by root(uid=0)\n\u200b\nsudo\u6388\u6743\u6267\u884c:\nsudo -l\nJul 10 00:43:09 localhost sudo:    good : TTY=pts\/4 ; PWD=\/home\/good ; USER=root ; COMMAND=\/sbin\/shutdown -r now<\/pre>\n
\/var\/log\/utmp  \u8bb0\u5f55\u5f53\u524d\u5df2\u7ecf\u767b\u5f55\u7684\u7528\u6237\u4fe1\u606f\uff0c\u8fd9\u4e2a\u6587\u4ef6\u4f1a\u968f\u7740\u7528\u6237\u7684\u767b\u5f55\u548c\u6ce8\u9500\u4e0d\u65ad\u53d8\u5316\uff0c\u53ea\u8bb0\u5f55\u5f53\u524d\u767b\u5f55\u7528\u6237\u7684\u4fe1\u606f\u3002\u540c\u6837\u8fd9\u4e2a\u6587\u4ef6\u4e0d\u80fd\u76f4\u63a5vi\uff0c\u800c\u8981\u4f7f\u7528w,who,users\u7b49\u547d\u4ee4\u6765\u67e5\u8be2
\n\/var\/log\/secure  \u8bb0\u5f55\u9a8c\u8bc1\u548c\u6388\u6743\u65b9\u9762\u7684\u4fe1\u606f\uff0c\u53ea\u8981\u6d89\u53ca\u8d26\u53f7\u548c\u5bc6\u7801\u7684\u7a0b\u5e8f\u90fd\u4f1a\u8bb0\u5f55\uff0c\u6bd4\u5982SSH\u767b\u5f55\uff0csu\u5207\u6362\u7528\u6237\uff0csudo\u6388\u6743\uff0c\u751a\u81f3\u6dfb\u52a0\u7528\u6237\u548c\u4fee\u6539\u7528\u6237\u5bc6\u7801\u90fd\u4f1a\u8bb0\u5f55\u5728\u8fd9\u4e2a\u65e5\u5fd7\u6587\u4ef6\u4e2d
\n\u65e5\u5fd7\u5206\u6790\u6280\u5de7\uff1a  <\/p>\n
\u6cb3\u9a6cwebshell\u67e5\u6740\uff1ahttp:\/\/www.shellpub.com\n\u6df1\u4fe1\u670dWebshell\u7f51\u7ad9\u540e\u95e8\u68c0\u6d4b\u5de5\u5177\uff1ahttp:\/\/edr.sangfor.com.cn\/backdoor_detection.html<\/pre>\n
.\/rpm -Va > rpm.log<\/pre>\n
0x03 \u5de5\u5177\u7bc7
\n\u4e00\u3001Rootkit\u67e5\u6740
\n\u4e8c\u3001\u75c5\u6bd2\u67e5\u6740
\n\u4e09\u3001webshell\u67e5\u6740
\nlinux\u7248\uff1a
\n\u56db\u3001RPM check\u68c0\u67e5
\n\u7cfb\u7edf\u5b8c\u6574\u6027\u53ef\u4ee5\u901a\u8fc7rpm\u81ea\u5e26\u7684-Va\u6765\u6821\u9a8c\u68c0\u67e5\u6240\u6709\u7684rpm\u8f6f\u4ef6\u5305\uff0c\u67e5\u770b\u54ea\u4e9b\u547d\u4ee4\u662f\u5426\u88ab\u66ff\u6362\u4e86\uff1a  <\/p>\n
\u9a8c\u8bc1\u5185\u5bb9\u4e2d\u76848\u4e2a\u4fe1\u606f\u7684\u5177\u4f53\u5185\u5bb9\u5982\u4e0b\uff1a\n        S         \u6587\u4ef6\u5927\u5c0f\u662f\u5426\u6539\u53d8\n        M         \u6587\u4ef6\u7684\u7c7b\u578b\u6216\u6587\u4ef6\u7684\u6743\u9650\uff08rwx\uff09\u662f\u5426\u88ab\u6539\u53d8\n        5         \u6587\u4ef6MD5\u6821\u9a8c\u662f\u5426\u6539\u53d8\uff08\u53ef\u4ee5\u770b\u6210\u6587\u4ef6\u5185\u5bb9\u662f\u5426\u6539\u53d8\uff09\n        D         \u8bbe\u5907\u4e2d\uff0c\u4ece\u4ee3\u7801\u662f\u5426\u6539\u53d8\n        L         \u6587\u4ef6\u8def\u5f84\u662f\u5426\u6539\u53d8\n        U         \u6587\u4ef6\u7684\u5c5e\u4e3b\uff08\u6240\u6709\u8005\uff09\u662f\u5426\u6539\u53d8\n        G         \u6587\u4ef6\u7684\u5c5e\u7ec4\u662f\u5426\u6539\u53d8\n        T         \u6587\u4ef6\u7684\u4fee\u6539\u65f6\u95f4\u662f\u5426\u6539\u53d8<\/pre>\n
\u6587\u4ef6\u63d0\u53d6\u8fd8\u539f\u6848\u4f8b\uff1a\nrpm  -qf \/bin\/ls  \u67e5\u8be2ls\u547d\u4ee4\u5c5e\u4e8e\u54ea\u4e2a\u8f6f\u4ef6\u5305\nmv  \/bin\/ls \/tmp  \u5148\u628als\u8f6c\u79fb\u5230tmp\u76ee\u5f55\u4e0b\uff0c\u9020\u6210ls\u547d\u4ee4\u4e22\u5931\u7684\u5047\u8c61\nrpm2cpio \/mnt\/cdrom\/Packages\/coreutils-8.4-19.el6.i686.rpm | cpio -idv .\/bin\/ls \u63d0\u53d6rpm\u5305\u4e2dls\u547d\u4ee4\u5230\u5f53\u524d\u76ee\u5f55\u7684\/bin\/ls\u4e0b\ncp \/root\/bin\/ls  \/bin\/ \u628als\u547d\u4ee4\u590d\u5236\u5230\/bin\/\u76ee\u5f55 \u4fee\u590d\u6587\u4ef6\u4e22\u5931<\/pre>\n
\u5982\u679c\u4e00\u5207\u5747\u6821\u9a8c\u6b63\u5e38\u5c06\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u8f93\u51fa\uff0c\u5982\u679c\u6709\u4e0d\u4e00\u81f4\u7684\u5730\u65b9\uff0c\u5c31\u4f1a\u663e\u793a\u51fa\u6765\uff0c\u8f93\u51fa\u683c\u5f0f\u662f8\u4f4d\u957f\u5b57\u7b26\u4e32\uff0c\u6bcf\u4e2a\u5b57\u7b26\u90fd\u7528\u4ee5\u8868\u793a\u6587\u4ef6\u4e0eRPM\u6570\u636e\u5e93\u4e2d\u4e00\u79cd\u5c5e\u6027\u7684\u6bd4\u8f83\u7ed3\u679c \uff0c\u5982\u679c\u662f. (\u70b9) \u5219\u8868\u793a\u6d4b\u8bd5\u901a\u8fc7\u3002
\n\u5982\u679c\u547d\u4ee4\u88ab\u66ff\u6362\u4e86\uff0c\u5982\u679c\u8fd8\u539f\u56de\u6765\uff1a  <\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Linux\u5e94\u6025\u54cd\u5e94\u5165\u4fb5\u6392\u67e5\u601d\u8def0x00 \u524d\u8a00\u200b \u5f53\u4f01\u4e1a\u53d1\u751f\u9ed1\u5ba2\u5165\u4fb5\u3001\u7cfb\u7edf\u5d29\u6e83\u6216\u5176\u5b83\u5f71\u54cd\u4e1a\u52a1\u6b63\u5e38\u8fd0\u884c\u7684\u5b89\u5168\u4e8b\u4ef6\u65f6\uff0c\u6025\u9700\u7b2c\u4e00\u65f6\u95f4\u8fdb\u884c\u5904\u7406\uff0c\u4f7f\u4f01\u4e1a\u7684\u7f51\u7edc\u4fe1\u606f\u7cfb\u7edf\u5728\u6700\u77ed\u65f6\u95f4\u5185\u6062\u590d\u6b63\u5e38\u5de5\u4f5c\uff0c\u8fdb\u4e00\u6b65\u67e5\u627e\u5165\u4fb5\u6765\u6e90\uff0c\u8fd8\u539f\u5165\u4fb5\u4e8b\u6545\u8fc7\u7a0b<\/p>\n","protected":false},"author":1,"featured_media":524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"topic":[],"class_list":["post-523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/comments?post=523"}],"version-history":[{"count":0,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/posts\/523\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media\/524"}],"wp:attachment":[{"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/media?parent=523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/categories?post=523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/tags?post=523"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.ccwifi.cc\/blogs\/wp-json\/wp\/v2\/topic?post=523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}