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Ultimate Network Stealther that makes Linux a Ghost In The Net and protects from MITM/DOS/scan.

Properties:

Network Invisibility
Network Anonymity
Protects from MITM/DOS
Transparent
Cross-platform
Minimalistic

Dependencies:

Linux 2.4.26+ - will work on any Linux-based OS, including Whonix and RaspberryPI

BASH - the whole script
root privileges - for kernel controlling

Limitations:

You can still be found with VLAN logs if using ethernet or by triangulation/broadcast if using WiFi
MAC spoofing won't work if appropriate mitigations has been taken, like DAI or sticky MAC
Might be buggy with some CISCO switches
Not suitable for production servers

How it works
The basic and primary network protocol is ARP for IPv4 and NDP (ICMPv6) for IPv6, located in the link and network layer, provides main connectivity in a LAN.
Despite its utility and simplicity, it has numerous vulnerabilities that can lead to a MITM attack and leak of confidentiality.
Patching of such a widely used standard is a practically impossible task.
A very simple, but at the same time effective solution is to disable ARP and NDP responses on an interface and be very cautious with broadcasting.
Considering the varieties of implementations, this means that anyone in the network wouldn't be able to communication with such host, only if the host is willing it-self.
The ARP/NDP cache will be erased quickly afterwards.
Here is an example schema:

A >>> I need MAC address of B >>> B

A <<< Here it is <<< B

A <<< I need MAC address of A <<< B

A >>> I'm not giving it >>> B

To increase privacy, it's advised to spoof the MAC address, which will provide a better concealment.
All this is possible using simple commands in Linux kernel and a script that automates it all.

Analysis
No ARP/NDP means no connectivity, so an absolute stealth and obscurity on the network/link layer.
This protects from all possible DOSes and MITMs (ARP, DNS, DHCP, ICMP, Port Stealing) and far less resource consuming like ArpON.
Such mitigation implies impossibility of being scanned (nmap, arping).
Besides, it doesn't impact a normal internet or LAN connection on the host perspective.
If you're connecting to a host, it will be authorised to do so, but shortly after stopping the communication, the host will forget about you because, ARP/NDP tables won't stay long without a fresh request.
Regarding the large compatibility and cross-platforming, it's very useful for offsec/pentest/redteaming as well.
You see everyone, but nobody sees you, you're a ghost.
Mitigation and having real supervision on the network will require deep reconfiguration of OSes, IDPSes and all other equipement, so hardly feasible.

HowTo
You can execute the script after the connection to the network or just before:

sudo GhostInTheNet.sh on eth0

This will activate the solution until reboot.
If you want to stop it:

sudo GhostInTheNet.sh off eth0

Of course, you will have to make the script executable in the first place:

chmod u+x GhostInTheNet.sh

Notes
ARP/NDP protocol can be exploited for defensive purpose.
Now your Poisontap is literally undetectable and your Tails is even more anonymous.
You should learn some stuff about IPv6.

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Poison, Reset, Spoof, Redirect MITM Script - creak

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Performs some of the most famous MITM attack on target addresses located in a local network. Among these, deny navigation and download capabilities of a target host in the local network performing an ARP poison attack and sending reset TCP packets to every request made to the router. Born as a didactic project for learning python language, I decline every responsibility for any abuse, including malevolent or illegal use of this code.

Installation

$ git clone https://github.com/codepr/creak.git
$ cd creak
$ python setup.py install

or simply clone the repository and run the creak.py after all requirements are installed:

$ git clone https://github.com/codepr/creak.git

It is required to have installed pcap libraries for raw packet manipulations and dpkt module, for dns spoofing options is required to have installed dnet module from libdnet package, do not confuse it with pydnet (network evaluation tool) module. It can use also scapy if desired, can just be set in the config.py file.

Options

Usage: creak.py [options] dev

Options:
  -h, --help           show this help message and exit
  -1, --sessions-scan  Sessions scan mode
  -2, --dns-spoof      Dns spoofing
  -3, --session-hijack Try to steal a TCP sessions by desynchronization (old technique)
  -x, --spoof          Spoof mode, generate a fake MAC address to be used
                       during attack
  -m MACADDR           Mac address octet prefix (could be an entire MAC
                       address in the form AA:BB:CC:DD:EE:FF)
  -M MANUFACTURER      Manufacturer of the wireless device, for retrieving a
                       manufactur based prefix for MAC spoof
  -s SOURCE            Source ip address (e.g. a class C address like
                       192.168.1.150) usually the router address
  -t TARGET            Target ip address (e.g. a class C address like
                       192.168.1.150), can be specified multiple times
  -p PORT              Target port to shutdown
  -a HOST              Target host that will be redirect while navigating on
                       target machine
  -r REDIR             Target redirection that will be fetched instead of host
                       on the target machine
  -v, --verbose        Verbose output mode
  -d, --dotted         Dotted output mode

Example
Most basic usage: Deny all traffic to the target host

$ python creak.py -t 192.168.1.30 wlan0

Set a different gateway:

$ python creak.py -s 192.168.1.2 -t 192.168.1.30 wlan0

Set a different mac address for the device:

$ python creak.py -m 00:11:22:33:44:55 -t 192.168.1.30 wlan0

Spoof mac address generating a fake one:

$ python creak.py -x -t 192.168.1.30 wlan0

Spoof mac address generating one based on manufacturer(e.g Xeros):

$ python creak.py -x -M xeros -t 192.168.1.30 wlan0

DNS spoofing using a fake MAC address, redirecting ab.xy to cd.xz(e.g. localhost):

$ python creak.py -x -M xeros -t 192.168.1.30 -a www.ab.xy -r www.cd.xz wlan0

Deny multiple hosts in the subnet:

$ python creak.py -x -t 192.168.1.30 -t 192.168.1.31 -t 192.168.1.32 wlan0

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Efficient And Advanced Man In The Middle Framework - Xerosploit

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Operative system	Version
Ubuntu	16.10 / 15.10
Kali linux	Rolling / Sana
Parrot OS	3.1

Ruby In The Middle (HTTP/HTTPS Interception Proxy) - RITM

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Ruby in the middle (RITM) is an HTTP/HTTPS interception proxy with on-the-fly certificate generation and signing, which leaves the user with the full power of the Ruby language to intercept and even modify requests and responses as she pleases.

Installation

    gem install ritm

Basic usage

Write your interception handlers

require 'ritm'

# A single answer for all your google searches
Ritm.on_request do |req|
  if req.request_uri.host.start_with? 'www.google.'
    new_query_string = req.request_uri.query.gsub(/(?<=^q=|&q=)(((?!&|$).)*)(?=&|$)/, 'RubyInTheMiddle')
    req.request_uri.query = new_query_string
  end
end

my_picture = File.read('i_am_famous.jpg')

# Replaces every picture on the web with my pretty face
Ritm.on_response do |_req, res|
  if res.header['content-type'] && res.header['content-type'].start_with?('image/')
    res.header['content-type'] = 'image/jpeg'
    res.body = my_picture
  end
end

Start the proxy server

proxy = Ritm::Proxy::Launcher.new
proxy.start

puts 'Hit enter to finish'
gets

proxy.shutdown

Configure your browser
Or whatever HTTP client you want to intercept traffic from, to connect to the proxy in localhost:8080
Browse the web!
For the examples above, search anything in google and also visit your favorite newspaper website.

Trusting self-signed certificates generated by RITM

With the previous example your client might have encountered issues when trying to access HTTPS resources. In some cases you can add an exception to your browser (or instruct your http client not to verify certificates) but in some other cases you won't be able to add exceptions. The reason for this is that in order to decrypt and to be able to modify SSL traffic, RITM will have to be the one doing the SSL negotiatiation with the client (using its own set of certificates) and then it will establish a separate SSL session towards the server. I.e.:

Client <--- SSL session ---> RITM <--- SSL session ---> Server

For every different server's hostname your client tries to communicate with, RITM will generate a certificate on the fly and sign it with a pre-configured Certificate Authority (CA). So, in order to be able to establish a secure connection you will need to configure your client (e.g. browser) to trust RITM's CA.

For security reasons, every time you start RITM's proxy with the default settings it will generate a new internal Certificate Authority. To use your own CA instead (so it can be loaded and trusted by your browser) perform the following steps:

Generate a Certificate Authority PEM and Private Key files
You can use OpenSSL or RITM to generate these two files. With OpenSSL:

openssl req -new -nodes -x509 -days 365 -extensions v3_ca -keyout insecure_ca.key -out insecure_ca.crt

Or with RITM:

require 'ritm/certs/ca'

ca = Ritm::CA.create common_name: 'InsecureCA'

File.write('insecure_ca.crt', ca.pem)
File.write('insecure_ca.key', ca.private_key.to_s)

Repeat step 2 from the previous example, this time indicating what CA should be used to sign certificates

proxy = Ritm::Proxy::Launcher.new(ca_crt_path: 'path/to/insecure_ca.crt',
                                  ca_key_path: 'path/to/insecure_ca.key')
proxy.start

puts 'Hit enter to finish'
gets

proxy.shutdown

Trust the CA certificate into your browser or client
I'll leave it to you to figure out how this is done in your browser or client.
Surf the web!
When you are done Remove the CA from your trusted authorities!
Or take really good care of the CA private key since anyone in possession of that key will be capable of decrypting all your traffic! Also notice that when using the proxy every server will be automatically trusted even if the end server certificate is not valid.

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Multipurpose Sniffer - Ettercap

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Mac OSX Arp Spoof (MITM) Tool - Arpy

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