A tool to perform DNS cache poisoning against vulnerable server.
Both attack methodology is widely described here: Kaminsky Attack
A detailed software documentation can be found here
WARNING: This code is intended to be used only in the context of a particular assignment. If you want to reuse some of the functionalities refer to the modules section.
NOTE: When used to test homework result the FAST mode is mandatory since otherwise packets are transmitted too slowly causing the attack to fail.
- Scapy (For packet crafting)
pip3 install scapy - Blessing (For coloured terminal)
pip3 install blessings - DNS Python (For initial DNS query)
pip3 install dnspython
Inline requirements installation command pip install:
pip3 install scapy blessings dnspython
Otherwise simply use the provided requirements file
pip3 install -r requirements.txt
The files launch.sh and launch_fast.sh can be edited with all the necessary paramters to carry on the attack or, instead, you could use the command line parameter directly.
usage: main.py [-h] -t DOMAIN -a ATTACKER_IP -v VICTIM_DNS_IP
[-bs BAD_SERVER_IP] [-bp BAD_SERVER_PORT] -bd BAD_DOMAIN
[-ns NS_SERVER] [-i INTERFACE] [-at {NORMAL,DAN}]
[-m {NORMAL,FAST}] [-vm VICTIM_MAC] [-si SECRET_IP]
[-sp SECRET_PORT] [-n NUM_ATTACK] [-nc] [-vb {1,2,3,4}]
DNS Poisoning Attack Tool
optional arguments:
-h, --help show this help message and exit
-t DOMAIN, --target-domain DOMAIN
The target domain to spoof
-a ATTACKER_IP, --attacker-ip ATTACKER_IP
Attacker IP address
-v VICTIM_DNS_IP, --victim-dns-ip VICTIM_DNS_IP
The victim DNS IP address
-bs BAD_SERVER_IP, --bad-server-ip BAD_SERVER_IP
The Bad Guy DNS server IP
-bp BAD_SERVER_PORT, --bad-server-port BAD_SERVER_PORT
The Bad Guy DNS server port
-bd BAD_DOMAIN, --bad-domain BAD_DOMAIN
The domain belonging to the attacker controlled zone
-ns NS_SERVER, --ns-server NS_SERVER
The victim authoritative server
-i INTERFACE, --interface INTERFACE
The Network Card interface to use
-at {NORMAL,DAN}, --attack-type {NORMAL,DAN}
The type of attack to perform
-m {NORMAL,FAST}, --mode {NORMAL,FAST}
Mode to use
-vm VICTIM_MAC, --victim-mac VICTIM_MAC
The victim MAC address
-si SECRET_IP, --secret-ip SECRET_IP
IP to bind for the secret fetcher
-sp SECRET_PORT, --secret-port SECRET_PORT
Port to bind for the secret fetcher
-n NUM_ATTACK, --num-attack NUM_ATTACK
Number of attack to perform
-nc, --no-colors Suppress coloured terminal output
-vb {1,2,3,4}, --verbosity {1,2,3,4}
Verbosity level
The tool support two version of the attack that can be specified with the related parameter
- Classical poisoning (Shenanigans Version 1)
- Dan's Shenanigans (Dan's Version)
In addition two modes are available for flooding
- Normal Flooding - which uses IP layer
- Faster Flooding - which uses Ethernet layer
When "faster flooding" is used, both victim MAC Address and a network interface must be supplied.
The secret is printed both on the terminal output and in log_secret.txt file.
The code is developed in a modular way in order to be implemented in other tools. An extensive class documentation can be found here. For example the following code starts a flood of DNS crafted response against the server at "8.8.8.8" in order to spoof the google domain and redirect users to the attacker IP (66.66.66.66):
import DNSPoisoning
poisoning = DNSPoisoning('8.8.8.8', 'www.google.com', '66.66.66.66')
poisoning.start_flooding()When runninng in faster mode, a single CTRL+C signal is not sufficient to stop the execution due to some thread/signal handler bug. Therefore to completely stop the tool is required to hold CTRL+C for few seconds until the terminate the application.
