{"id":525,"date":"2024-03-14T15:29:01","date_gmt":"2024-03-14T07:29:01","guid":{"rendered":"http:\/\/www.ccwifi.cc\/blogs\/?p=525"},"modified":"2024-03-14T15:29:01","modified_gmt":"2024-03-14T07:29:01","slug":"linux%e7%8e%af%e5%a2%83%e4%b8%8b%e9%bb%91%e5%ae%a2%e5%85%a5%e4%be%b5%e6%8e%92%e6%9f%a5%e6%ad%a5%e9%aa%a4","status":"publish","type":"post","link":"https:\/\/www.ccwifi.cc\/blogs\/2024\/03\/14\/linux%e7%8e%af%e5%a2%83%e4%b8%8b%e9%bb%91%e5%ae%a2%e5%85%a5%e4%be%b5%e6%8e%92%e6%9f%a5%e6%ad%a5%e9%aa%a4\/","title":{"rendered":"Linux\u73af\u5883\u4e0b\u9ed1\u5ba2\u5165\u4fb5\u6392\u67e5\u6b65\u9aa4"},"content":{"rendered":"<div>\n<p>\u5728\u7ebfwifi\u8dd1\u5305 \u91d1\u521a\u5305\u8dd1\u5305 cap\u8dd1\u5305 hccapx ewsa\u5728\u7ebf \u5c31\u6765 <strong><a href=\"https:\/\/ccwifi.cc\" target=\"_blank\" rel=\"noopener\">\u63e1\u624b\u5305\u8dd1\u5305<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-429\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1710401336706_0.png\" alt=\"\" width=\"715\" height=\"367\"><\/p>\n<p>\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<p>\u5e0c\u671b\u5404\u4f4d\u7ec6\u5fc3\u5b66\u4e60 \u4f4e\u8c03\u7528\u7f51<\/p>\n<\/div>\n<pre>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\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\nwho \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\n<\/pre>\n<p>0x00 \u524d\u8a00<\/p>\n<p>\u5f53\u4f01\u4e1a\u53d1\u751f\u9ed1\u5ba2\u5165\u4fb5\u3001\u7cfb\u7edf\u5d29\u6e83\u6216\u5176\u4ed6\u5f71\u54cd\u4e1a\u52a1\u6b63\u5e38\u8fd0\u884c\u7684\u5b89\u5168\u4e8b\u4ef6\u65f6\uff0c\u9700\u8981\u7b2c\u4e00\u65f6\u95f4\u8fdb\u884c\u5904\u7406\uff0c\u4ee5\u4f7f\u4f01\u4e1a\u7684\u7f51\u7edc\u4fe1\u606f\u7cfb\u7edf\u5728\u6700\u77ed\u65f6\u95f4\u5185\u6062\u590d\u6b63\u5e38\u5de5\u4f5c\u3002\u540c\u65f6\uff0c\u9700\u8981\u8fdb\u4e00\u6b65\u67e5\u627e\u5165\u4fb5\u6765\u6e90\uff0c\u8fd8\u539f\u5165\u4fb5\u4e8b\u6545\u8fc7\u7a0b\uff0c\u5e76\u63d0\u4f9b\u89e3\u51b3\u65b9\u6848\u548c\u9632\u8303\u63aa\u65bd\uff0c\u4ee5\u633d\u56de\u6216\u51cf\u5c11\u7ecf\u6d4e\u635f\u5931\u3002<\/p>\n<p>\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<p>0x01 \u5165\u4fb5\u6392\u67e5\u601d\u8def<\/p>\n<h2 id=\"11\">1.1 \u8d26\u53f7\u5b89\u5168<\/h2>\n<p>\u57fa\u672c\u4f7f\u7528\uff1a<\/p>\n<pre>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\n<\/pre>\n<p>\u5165\u4fb5\u6392\u67e5\uff1a<\/p>\n<pre>\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\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&gt;\/dev\/null | awk '{print $NF}' | sed -e 's\/[()]\/\/g'`\nif [ \"$USER_IP\" = \"\" ]\nthen\nUSER_IP=`hostname`\nfi\nexport HISTTIMEFORMAT=\"%F %T $USER_IP `whoami` \"\nshopt -s histappend\nexport PROMPT_COMMAND=\"history -a\"\n######### jiagu history xianshi ##########\n3\uff09source \/etc\/profile\u8ba9\u914d\u7f6e\u751f\u6548\n\u751f\u6210\u6548\u679c\uff1a 1 2018-07-10 19:45:39 192.168.204.1 root source \/etc\/profile\n3\u3001\u5386\u53f2\u64cd\u4f5c\u547d\u4ee4\u7684\u6e05\u9664\uff1ahistory -c\n\u4f46\u6b64\u547d\u4ee4\u5e76\u4e0d\u4f1a\u6e05\u9664\u4fdd\u5b58\u5728\u6587\u4ef6\u4e2d\u7684\u8bb0\u5f55\uff0c\u56e0\u6b64\u9700\u8981\u624b\u52a8\u5220\u9664.bash_profile\u6587\u4ef6\u4e2d\u7684\u8bb0\u5f55\u3002\n<\/pre>\n<pre>\u8fdb\u5165\u7528\u6237\u76ee\u5f55\u4e0b\ncat .bash_history &gt;&gt; history.txt\n<\/pre>\n<pre>netstat -antlp|more\n\u67e5\u770b\u4e0bpid\u6240\u5bf9\u5e94\u7684\u8fdb\u7a0b\u6587\u4ef6\u8def\u5f84\uff0c\n\u8fd0\u884cls -l \/proc\/$PID\/exe\u6216file \/proc\/$PID\/exe\uff08$PID \u4e3a\u5bf9\u5e94\u7684pid \u53f7\uff09\n<\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1710401336706_1.png\" alt=\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"><\/p>\n<pre>ps aux | grep pid\n<\/pre>\n<pre>vi \/etc\/inittab\nid=3\uff1ainitdefault \u7cfb\u7edf\u5f00\u673a\u540e\u76f4\u63a5\u8fdb\u5165\u54ea\u4e2a\u8fd0\u884c\u7ea7\u522b\n<\/pre>\n<h2 id=\"12\">1.2 \u5386\u53f2\u547d\u4ee4<\/h2>\n<p>\u57fa\u672c\u4f7f\u7528\uff1a<\/p>\n<p>\u5165\u4fb5\u6392\u67e5\uff1a<\/p>\n<h2 id=\"13\">1.3 \u68c0\u67e5\u5f02\u5e38\u7aef\u53e3<\/h2>\n<p>\u4f7f\u7528netstat\u7f51\u7edc\u8fde\u63a5\u547d\u4ee4\uff0c\u5206\u6790\u53ef\u7591\u7aef\u53e3\u3001IP\u3001PID<\/p>\n<h2 id=\"14\">1.4 \u68c0\u67e5\u5f02\u5e38\u8fdb\u7a0b<\/h2>\n<p>\u4f7f\u7528ps\u547d\u4ee4\uff0c\u5206\u6790\u8fdb\u7a0b<\/p>\n<h2 id=\"15\">1.5 \u68c0\u67e5\u5f00\u673a\u542f\u52a8\u9879<\/h2>\n<p>\u57fa\u672c\u4f7f\u7528\uff1a<\/p>\n<p>\u7cfb\u7edf\u8fd0\u884c\u7ea7\u522b\u793a\u610f\u56fe\uff1a<\/p>\n<p>| \u8fd0\u884c\u7ea7\u522b | \u542b\u4e49 |<br \/>\n| :&#8212;&#8212;: | :&#8212;: |<br \/>\n|    0     | \u5173\u673a |<br \/>\n|    1     | \u5355\u7528\u6237\u6a21\u5f0f\uff0c\u7528\u4e8e\u7cfb\u7edf\u4fee\u590d |<br \/>\n|    2     | \u4e0d\u5b8c\u5168\u7684\u547d\u4ee4\u884c\u6a21\u5f0f\uff0c\u4e0d\u542bNFS\u670d\u52a1 |<br \/>\n|    3     | \u5b8c\u5168\u7684\u547d\u4ee4\u884c\u6a21\u5f0f\uff0c\u6807\u51c6\u5b57\u7b26\u754c\u9762 |<br \/>\n|    4     | \u7cfb\u7edf\u4fdd\u7559 |<br \/>\n|    5     | \u56fe\u5f62\u6a21\u5f0f |<br \/>\n|    6     | \u91cd\u542f\u52a8 |<\/p>\n<p>\u67e5\u770b\u8fd0\u884c\u7ea7\u522b\u547d\u4ee4\uff1arunlevel<\/p>\n<p>\u7cfb\u7edf\u9ed8\u8ba4\u5141\u8bb8\u7ea7\u522b\uff1a<\/p>\n<pre>\/etc\/rc.local\n\/etc\/rc.d\/rc[0~6].d\n<\/pre>\n<pre>root@localhost ~]# ln -s \/etc\/init.d\/sshd \/etc\/rc.d\/rc3.d\/S100ssh\n<\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1710401336706_2.jpg\" alt=\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"><\/p>\n<p>\u5f00\u673a\u542f\u52a8\u914d\u7f6e\u6587\u4ef6\u4f8b\u5b50\uff1a<\/p>\n<p>\u5f53\u9700\u8981\u5f00\u673a\u542f\u52a8\u81ea\u5df1\u7684\u811a\u672c\u65f6\uff0c\u53ea\u9700\u5c06\u53ef\u6267\u884c\u811a\u672c\u653e\u5728<code>\/etc\/init.d<\/code>\u76ee\u5f55\u4e0b\uff0c\u7136\u540e\u5728<code>\/etc\/rc.d\/rc*.d<\/code>\u4e2d\u5efa\u7acb\u8f6f\u94fe\u63a5\u5373\u53ef\u3002\u4f8b\u5982\uff0c<code>sshd<\/code>\u662f\u5177\u4f53\u670d\u52a1\u7684\u811a\u672c\u6587\u4ef6\uff0c<code>S100ssh<\/code>\u662f\u5176\u8f6f\u94fe\u63a5\u3002\u4ee5<code>S<\/code>\u5f00\u5934\u4ee3\u8868\u52a0\u8f7d\u65f6\u81ea\u542f\u52a8\uff1b\u5982\u679c\u662f\u4ee5<code>K<\/code>\u5f00\u5934\u7684\u811a\u672c\u6587\u4ef6\uff0c\u4ee3\u8868\u8fd0\u884c\u7ea7\u522b\u52a0\u8f7d\u65f6\u9700\u8981\u5173\u95ed\u7684\u3002<\/p>\n<p>\u5165\u4fb5\u6392\u67e5\uff1a<\/p>\n<p>\u542f\u52a8\u9879\u6587\u4ef6\uff1a<\/p>\n<p>more \/etc\/rc.local<br \/>\n\/etc\/rc.d\/rc[0~6].d<br \/>\nls -l \/etc\/rc.d\/rc3.d\/<\/p>\n<h2 id=\"16\">1.6 \u68c0\u67e5\u5b9a\u65f6\u4efb\u52a1<\/h2>\n<p>\u57fa\u672c\u4f7f\u7528\uff1a<\/p>\n<ol>\n<li>\u5229\u7528crontab\u521b\u5efa\u8ba1\u5212\u4efb\u52a1<\/li>\n<\/ol>\n<ul>\n<li><code>crontab -l<\/code> \u5217\u51fa\u67d0\u4e2a\u7528\u6237cron\u670d\u52a1\u7684\u8be6\u7ec6\u5185\u5bb9<\/li>\n<li><code>crontab -r<\/code> \u5220\u9664\u6bcf\u4e2a\u7528\u6237cront\u4efb\u52a1\uff08\u8c28\u614e\uff1a\u5220\u9664\u6240\u6709\u7684\u8ba1\u5212\u4efb\u52a1\uff09<\/li>\n<li><code>crontab -e<\/code> \u4f7f\u7528\u7f16\u8f91\u5668\u7f16\u8f91\u5f53\u524d\u7684crontab\u6587\u4ef6<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff1a<code>\/1 * * * echo \"hello world\" &gt;&gt; \/tmp\/test.txt<\/code> \u6bcf\u5206\u949f\u5199\u5165\u6587\u4ef6<\/p>\n<ol start=\"2\">\n<li>\u5229\u7528anacron\u5b9e\u73b0\u5f02\u6b65\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6<br \/>\n\u6bcf\u5929\u8fd0\u884c<code>\/home\/backup.sh<\/code>\u811a\u672c\uff1a<\/li>\n<\/ol>\n<pre><code>vi \/etc\/anacrontab\n@daily 10 example.daily \/bin\/bash \/home\/backup.sh\n<\/code><\/pre>\n<p>\u5f53\u673a\u5668\u5728<code>backup.sh<\/code>\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\u5f857\u5929\u3002<\/p>\n<p>\u5165\u4fb5\u6392\u67e5\uff1a<\/p>\n<p>\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u76ee\u5f55\u4e2d\u662f\u5426\u5b58\u5728\u6076\u610f\u811a\u672c\uff1a<\/p>\n<pre>more \/etc\/cron.daily\/* \u67e5\u770b\u76ee\u5f55\u4e0b\u6240\u6709\u6587\u4ef6\n<\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1710401336706_3.jpg\" alt=\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"><\/p>\n<pre>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\n<\/pre>\n<pre>\u4fee\u6539\/etc\/re.d\/rc.local \u6587\u4ef6 \n\u52a0\u5165 \/etc\/init.d\/httpd start\n<\/pre>\n<pre>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\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\"\n<\/pre>\n<p>\u5c0f\u6280\u5de7\uff1a<\/p>\n<h2 id=\"17\">1.7 \u68c0\u67e5\u670d\u52a1<\/h2>\n<p>\u670d\u52a1\u81ea\u542f\u52a8<\/p>\n<p>\u7b2c\u4e00\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a<\/p>\n<p>\u7b2c\u4e8c\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a<\/p>\n<p>\u7b2c\u4e09\u79cd\u4fee\u6539\u65b9\u6cd5\uff1a<\/p>\n<p>\u4f7f\u7528ntsysv\u547d\u4ee4\u7ba1\u7406\u81ea\u542f\u52a8\uff0c\u53ef\u4ee5\u7ba1\u7406\u72ec\u7acb\u670d\u52a1\u548cxinetd\u670d\u52a1\u3002<\/p>\n<p>\u5165\u4fb5\u6392\u67e5\uff1a<\/p>\n<ol>\n<li>\u67e5\u8be2\u5df2\u5b89\u88c5\u7684\u670d\u52a1\uff1aRPM\u5305\u5b89\u88c5\u7684\u670d\u52a1<\/li>\n<\/ol>\n<pre>\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\n<\/pre>\n<p><img decoding=\"async\" src=\"http:\/\/www.ccwifi.cc\/blogs\/wp-content\/uploads\/2024\/03\/1710401336706_4.png\" alt=\"kali\u600e\u4e48\u67e5\u653b\u51fb\u7aef\u53e3\"><\/p>\n<p>\u6e90\u7801\u5305\u5b89\u88c5\u7684\u670d\u52a1<\/p>\n<h2 id=\"18\">1.8 \u68c0\u67e5\u5f02\u5e38\u6587\u4ef6<\/h2>\n<ol>\n<li>\u67e5\u770b\u654f\u611f\u76ee\u5f55\uff0c\u5982<code>\/tmp<\/code>\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff0c\u540c\u65f6\u6ce8\u610f\u9690\u85cf\u6587\u4ef6\u5939\uff0c\u4ee5\u201c..\u201d\u4e3a\u540d\u7684\u6587\u4ef6\u5939\u5177\u6709\u9690\u85cf\u5c5e\u6027<\/li>\n<li>\u5f97\u5230\u53d1\u73b0WEBSHELL\u3001\u8fdc\u63a7\u6728\u9a6c\u7684\u521b\u5efa\u65f6\u95f4\uff0c\u5982\u4f55\u627e\u51fa\u540c\u4e00\u65f6\u95f4\u8303\u56f4\u5185\u521b\u5efa\u7684\u6587\u4ef6\uff1f<\/li>\n<\/ol>\n<p>\u53ef\u4ee5\u4f7f\u7528<code>find<\/code>\u547d\u4ee4\u6765\u67e5\u627e\uff0c\u4f8b\u5982\uff1a<code>find \/opt -iname \"*\" -atime 1 -type f<\/code> \u627e\u51fa<code>\/opt<\/code>\u4e0b\u4e00\u5929\u524d\u8bbf\u95ee\u8fc7\u7684\u6587\u4ef6<\/p>\n<ol start=\"3\">\n<li>\u9488\u5bf9\u53ef\u7591\u6587\u4ef6\u53ef\u4ee5\u4f7f\u7528<code>stat<\/code>\u8fdb\u884c\u521b\u5efa\u4fee\u6539\u65f6\u95f4\u3002<\/li>\n<\/ol>\n<h2 id=\"19\">1.9 \u68c0\u67e5\u7cfb\u7edf\u65e5\u5fd7<\/h2>\n<p>\u65e5\u5fd7\u9ed8\u8ba4\u5b58\u653e\u4f4d\u7f6e\uff1a<code>\/var\/log\/<\/code><\/p>\n<p>\u67e5\u770b\u65e5\u5fd7\u914d\u7f6e\u60c5\u51b5\uff1a<code>more \/etc\/rsyslog.conf<\/code><\/p>\n<p>| \u65e5\u5fd7\u6587\u4ef6       | \u8bf4\u660e                                                   |<br \/>\n| :&#8212;&#8212;&#8212;&#8212;- | :&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211; |<br \/>\n| \/var\/log\/cron  | \u8bb0\u5f55\u4e86\u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u76f8\u5173\u7684\u65e5\u5fd7                           |<br \/>\n| \/var\/log\/cups  | \u8bb0\u5f55\u6253\u5370\u4fe1\u606f\u7684\u65e5\u5fd7                                     |<br \/>\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\u67e5\u770b |<br \/>\n| \/var\/log\/mailog| \u8bb0\u5f55\u90ae\u4ef6\u4fe1\u606f                                           |<br \/>\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 |<br \/>\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 |<br \/>\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 |<br \/>\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 |<br \/>\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 |<br \/>\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 |<\/p>\n<p>\u65e5\u5fd7\u5206\u6790\u6280\u5de7\uff1a<\/p>\n<p>0x02 \u5de5\u5177\u7bc7<\/p>\n<h2 id=\"21rootkit\">2.1 Rootkit\u67e5\u6740<\/h2>\n<p>\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<pre><code>wget ftp:\/\/ftp.pangeia.com.br\/pub\/seg\/pac\/chkrootkit.tar.gz\ntar zxvf chkrootkit.tar.gz\ncd chkrootkit-0.52\nmake sense #\u7f16\u8bd1\u5b8c\u6210\u6ca1\u6709\u62a5\u9519\u7684\u8bdd\u6267\u884c\u68c0\u67e5\n.\/chkrootkit\n<\/code><\/pre>\n<p>\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<pre><code>Wget\ntar -zxvf rkhunter-1.4.4.tar.gz\ncd rkhunter-1.4.4\n.\/installer.sh --install\nrkhunter -c\n<\/code><\/pre>\n<h2 id=\"22\">2.2 \u75c5\u6bd2\u67e5\u6740<\/h2>\n<p>ClamAV\u7684\u5b98\u65b9\u4e0b\u8f7d\u5730\u5740\u4e3a\uff1a<\/p>\n<p>\u5b89\u88c5\u65b9\u5f0f\u4e00\uff1a<\/p>\n<pre><code>1\u3001\u5b89\u88c5zlib\uff1a\nwget\ntar -zxvf zlib-1.2.7.tar.gz\ncd zlib-1.2.7\nyum install gcc\nCFLAGS=\"-O3 -fPIC\" .\/configure --prefix=\/usr\/local\/zlib\/\nmake &amp;&amp; make install\n\n2\u3001\u6dfb\u52a0\u7528\u6237\u7ec4clamav\u548c\u7ec4\u6210\u5458clamav\uff1a\ngroupadd clamav\nuseradd -g clamav -s \/bin\/false -c \"Clam AntiVirus\" clamav\n\n3\u3001\u5b89\u88c5Clamav\ntar \u2013zxvf clamav-0.97.6.tar.gz\ncd clamav-0.97.6\n.\/configure --prefix=\/opt\/clamav --disable-clamav -with-zlib=\/usr\/local\/zlib\nmake\nmake install\n\n4\u3001\u914d\u7f6eClamav\nmkdir \/opt\/clamav\/logs\nmkdir \/opt\/clamav\/updata\ntouch \/opt\/clamav\/logs\/freshclam.log\ntouch \/opt\/clamav\/logs\/clamd.log\ncd \/opt\/clamav\/logs\nchown clamav:clamav clamd.log\nchown clamav:clamav freshclam.log\n\n5\u3001ClamAV \u4f7f\u7528\uff1a\n\/opt\/clamav\/bin\/freshclam \u5347\u7ea7\u75c5\u6bd2\u5e93\n.\/clamscan \u2013h \u67e5\u770b\u76f8\u5e94\u7684\u5e2e\u52a9\u4fe1\u606f\n.\/clamscan -r \/home \u626b\u63cf\u6240\u6709\u7528\u6237\u7684\u4e3b\u76ee\u5f55\n.\/clamscan -r --bell -i \/bin \u626b\u63cfbin\u76ee\u5f55\u5e76\u663e\u793a\u6709\u95ee\u9898\u7684\u6587\u4ef6\u7684\u626b\u63cf\u7ed3\u679c\n<\/code><\/pre>\n<p>\u5b89\u88c5\u65b9\u5f0f\u4e8c\uff1a<\/p>\n<pre><code>#\u5b89\u88c5\nyum install -y clamav\n#\u66f4\u65b0\u75c5\u6bd2\u5e93\nfreshclam\n#\u626b\u63cf\u65b9\u6cd5\nclamscan -r \/etc --max-dir-recursion=5 -l \/root\/etcclamav.log\nclamscan -r \/bin --max-dir-recursion=5 -l \/root\/binclamav.log\nclamscan -r \/usr --max-dir-recursion=5 -l \/root\/usrclamav.log\n#\u626b\u63cf\u5e76\u6740\u6bd2\nclamscan -r --remove \/usr\/bin\/bsd-port\nclamscan -r --remove \/usr\/bin\/\nclamscan -r --remove \/usr\/local\/zabbix\/sbin\n#\u67e5\u770b\u65e5\u5fd7\u53d1\u73b0\ncat \/root\/usrclamav.log | grep FOUND\n<\/code><\/pre>\n<h2 id=\"23webshell\">2.3 webshell\u67e5\u6740<\/h2>\n<p>Linux\u7248\uff1a<\/p>\n<pre>.\/rpm -Va &gt; rpm.log\n<\/pre>\n<pre>\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\n<\/pre>\n<h2 id=\"24rpmcheck\">2.4 RPM check\u68c0\u67e5<\/h2>\n<p>\u7cfb\u7edf\u5b8c\u6574\u6027\u53ef\u4ee5\u901a\u8fc7rpm\u81ea\u5e26\u7684<code>-Va<\/code>\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<p>\u5982\u679c\u4e00\u5207\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<code>.<\/code>\uff08\u70b9\uff09\u5219\u8868\u793a\u6d4b\u8bd5\u901a\u8fc7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u73af\u5883\u4e0b\u9ed1\u5ba2\u5165\u4fb5\u6392\u67e5\u6b65\u9aa40x00 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