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The Bash Bunny by Hak5 is a simple and powerful multi-function USB attack and automation platform for penetration testers and systems administrators.
It's easy setup & deployment with a simple "Bunny Script" language, multi-position attack switch and a centralized repository of payloads.
It's powerful with multiple attack vectors including HID keyboard, USB Ethernet, Serial and Mass Storage. Simultaneously perform keystroke injection attacks, bring-your-own-network attacks and intelligent exfiltration.
The best penetration testers know that with the right tools and a few seconds of physical access, all bets are off. Since 2005 Hak5 has been developing just such tools – combining lethal power, elegance and simplicity. Now, with the Bash Bunny, we’re taking pentesting to the next level…
Exploiting local network attack vectors, the Bash Bunny emulates specialized Ethernet adapters.
This is done in such a way that allows the Bash Bunny to be recognized on the victim computer as the fastest network, without drivers, automatically – locked or unlocked. As a 2 gigabit adapter with an authoritative DHCP server, the Bash Bunny obtains a low metric. This means that the computer will instantly trust the Bash Bunny with its network traffic — enabling a plethora of automated pocket network attacks undetectable by the existing infrastructure.
These bring-your-own-network attacks are cross-platform, with the Bash Bunny exploiting Mac, Linux, and Android computers with its ECM Ethernet attack mode, and Windows computers with its Microsoft proprietary RNDIS Ethernet attack mode.
Using these methods, attack like QuickCreds for example are able to steal hashed credentials from locked computers in seconds. Plug the Bash Bunny into a computer, wait a few seconds and when the light is green – the trap is clean!
With a full TCP/IP stack and all common Linux-based tools at your disposal, the possibilities for pocket network attacks are endless!
Computers trust humans. Humans interact with keyboards. Hence the Human Interface Device or HID standard used by all modern USB keyboards. To a computer, if the device says it’s a keyboard — it’s a keyboard.
To penetration testers, a small USB device pre-programmed to inject keystrokes into the victim computer covertly hidden inside a regular flash-drive case is a recipe for social engineering success. Hence the popular Hak5 USB Rubber Ducky – the device that invented keystroke injection attacks.
Building on this, the Bash Bunny directly interprets the Ducky Script language that has become synonymous with HID attacks with its HID attack mode. Advanced attacks are enabled by combining HID attacks with the additional USB device supported by the Bash Bunny – like gigabit Ethernet, Serial and Storage. Coupled with a scripting language that supports conditions and logic using BASH, a new era of keystroke injection attacks are possible.
As anyone in IT knows, two is one — one is none. It’s important to backup your documents. As a penetration testers know, exfiltration is a fancy word for an involuntary backup. To that end, the Bash Bunny features at storage attack mode capable of intelligent exfiltration, with gigs of high speed USB flash storage. It’s perfect for binary injection, staged payloads and more.
It’s also the most convenient way to configure the Bash Bunny, with an dedicated access to its USB Flash Storage. Just slide the payload switch to arming mode and plug the Bash Bunny into your computer or smartphone. As a standard flash drive, it’s simple to navigate and configure. Modify payloads on the fly by editing simple text files. Assign payloads to switch positions by copying files. Browse the entire payload library right from the flash storage. Even review captured data from the “loot” folder. It couldn’t be more straightforward.
Throughout the history of personal computers, serial has been a mainstay for file transfer and console access. To this day it’s widely used, from headless servers to embedded microcontrollers. With the Bash Bunny, we’ve made it convenient as ever – without the need for a serial-to-USB converter.
With dedicated shell access from the arming mode, dropping to the Bash Bunny Linux terminal is simple over serial from any OS. When combined with advanced payloads, using the serial attack mode, there’s limitless potential for creativity with this often overlooked interface.