Responder is an open-source security tool for detecting/responding to network attacks, with features like credential interception and MITM. Requires expertise.
Responder is a powerful and open-source security tool designed for detecting and responding to network-based attacks. The tool is used for testing the security of various systems and services by simulating different attack scenarios.
Responder works by passively listening for traffic on the network and analyzing it for potential vulnerabilities. The tool can detect and respond to several types of attacks, including SMB relay, NTLMv1 and NTLMv2, HTTP and HTTPS, FTP and FTPS, and several others.
One of the main features of Responder is its ability to intercept and relay network traffic to authenticate credentials. This makes it a useful tool for capturing passwords, hashes, and other sensitive information. It can also be used to perform man-in-the-middle attacks, allowing an attacker to intercept and modify network traffic.
Responser is compatible with both Windows and Linux operating systems and can be run from a command-line interface. The tool has an extensive range of options and settings that allow users to customize it to their specific needs. The tool also supports various output formats, making it easy to integrate with other security tools and processes.
Despite its many capabilities, Responder is not a tool for novice users. Its complexity and power require a good understanding of networking and security concepts. Additionally, the tool can be used maliciously, making it important to use it responsibly and ethically.
In summary, Responder is a versatile and powerful security tool that can be used for detecting and responding to network-based attacks. Its ability to intercept and relay network traffic, authenticate credentials, and perform man-in-the-middle attacks make it a valuable tool for testing network security. However, it should be used responsibly and with caution by knowledgeable security professionals.
Specify the IP address to redirect to (-i 192.168.1.202), enabling the WPAD rogue proxy (-w On), answers for netbios wredir (-r On), and fingerprinting (-f On):
responder
This package contains Responder/MultiRelay, an LLMNR, NBT-NS and MDNS poisoner. It will answer to specific NBT-NS (NetBIOS Name Service) queries based on their name suffix (see: . By default, the tool will only answer to File Server Service request, which is for SMB.
The concept behind this is to target your answers, and be stealthier on the network. This also helps to ensure that you don’t break legitimate NBT-NS behavior. You can set the -r option via command line if you want to answer to the Workstation Service request name suffix.
Installed size:4.04 MBHow to install:sudo apt install responder
Dependencies:
net-tools
python3
python3-netifaces
python3-pkg-resources
python3-pycryptodome
python3-six
responder
:~# responder -h
__
.----.-----.-----.-----.-----.-----.--| |.-----.----.
| _| -__|__ --| _ | _ | | _ || -__| _|
|__| |_____|_____| __|_____|__|__|_____||_____|__|
|__|
NBT-NS, LLMNR & MDNS Responder 3.1.3.0
To support this project:
Patreon -> https://www.patreon.com/PythonResponder
Paypal -> https://paypal.me/PythonResponder
Author: Laurent Gaffie ()
To kill this script hit CTRL-C
Usage: responder -I eth0 -w -d
or:
responder -I eth0 -wd
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-A, --analyze Analyze mode. This option allows you to see NBT-NS,
BROWSER, LLMNR requests without responding.
-I eth0, --interface=eth0
Network interface to use, you can use 'ALL' as a
wildcard for all interfaces
-i 10.0.0.21, --ip=10.0.0.21
Local IP to use (only for OSX)
-6 2002:c0a8:f7:1:3ba8:aceb:b1a9:81ed, --externalip6=2002:c0a8:f7:1:3ba8:aceb:b1a9:81ed
Poison all requests with another IPv6 address than
Responder's one.
-e 10.0.0.22, --externalip=10.0.0.22
Poison all requests with another IP address than
Responder's one.
-b, --basic Return a Basic HTTP authentication. Default: NTLM
-d, --DHCP Enable answers for DHCP broadcast requests. This
option will inject a WPAD server in the DHCP response.
Default: False
-D, --DHCP-DNS This option will inject a DNS server in the DHCP
response, otherwise a WPAD server will be added.
Default: False
-w, --wpad Start the WPAD rogue proxy server. Default value is
False
-u UPSTREAM_PROXY, --upstream-proxy=UPSTREAM_PROXY
Upstream HTTP proxy used by the rogue WPAD Proxy for
outgoing requests (format: host:port)
-F, --ForceWpadAuth Force NTLM/Basic authentication on wpad.dat file
retrieval. This may cause a login prompt. Default:
False
-P, --ProxyAuth Force NTLM (transparently)/Basic (prompt)
authentication for the proxy. WPAD doesn't need to be
ON. This option is highly effective. Default: False
--lm Force LM hashing downgrade for Windows XP/2003 and
earlier. Default: False
--disable-ess Force ESS downgrade. Default: False
-v, --verbose Increase verbosity.
responder-BrowserListener
responder-DHCP_Auto
responder-FindSQLSrv
responder-Icmp-Redirect
:~# responder-Icmp-Redirect -h
Usage: responder-Icmp-Redirect -I eth0 -i 10.20.30.40 -g 10.20.30.254 -t 10.20.30.48 -r 10.20.40.1
Options:
-h, --help show this help message and exit
-i 10.20.30.40, --ip=10.20.30.40
The ip address to redirect the traffic to. (usually
yours)
-g 10.20.30.254, --gateway=10.20.30.254
The ip address of the original gateway (issue the
command 'route -n' to know where is the gateway
-t 10.20.30.48, --target=10.20.30.48
The ip address of the target
-r 10.20.40.1, --route=10.20.40.1
The ip address of the destination target, example: DNS
server. Must be on another subnet.
-s 10.20.40.1, --secondaryroute=10.20.40.1
The ip address of the destination target, example:
Secondary DNS server. Must be on another subnet.
-I eth0, --interface=eth0
Interface name to use, example: eth0
-a 10.20.30.40, --alternate=10.20.30.40
The alternate gateway, set this option if you wish to
redirect the victim traffic to another host than yours
responder-MultiRelay
:~# responder-MultiRelay -h
[!]MultiRelay/bin/ folder is empty. You need to run these commands:
apt-get install gcc-mingw-w64-x86-64
x86_64-w64-mingw32-gcc ./MultiRelay/bin/Runas.c -o ./MultiRelay/bin/Runas.exe -municode -lwtsapi32 -luserenv
x86_64-w64-mingw32-gcc ./MultiRelay/bin/Syssvc.c -o ./MultiRelay/bin/Syssvc.exe -municode
Additionally, you can add your custom mimikatz executables (mimikatz.exe and mimikatz_x86.exe)
in the MultiRelay/bin/ folder for the mimi32/mimi command.
responder-RunFinger
:~# responder-RunFinger -h
Usage: responder-RunFinger -i 10.10.10.224
or:
responder-RunFinger -i 10.10.10.0/24
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-i 10.10.10.224, --ip=10.10.10.224
Target IP address or class C
-f ips.txt, --filename=ips.txt
Target file
-t 0.9, --timeout=0.9
Timeout for all connections. Use this option to fine
tune Runfinger.
