Key Croc
  • The Key Croc by Hak5
  • Key Croc Basics
    • Serial Console Access
    • Updating the Firmware
    • Factory Reset
  • Configuration
    • Default Settings
    • Understanding Languages
  • Files and Directory Structure
    • Understanding the File System
  • Getting the Key Croc Online
  • Configuring Cloud C²
  • Writing Payloads
    • Payload Development
    • Ducky Script Commands
    • Command Quick Reference
    • The MATCH Command
    • The SAVEKEYS Command
    • The ATTACKMODE Command
      • USB Identifiers
    • The QUACK Command
    • Advanced QUACK Commands
    • The LED Command
  • Beginner Guides
    • Password Sniffing with the Key Croc — Easy, or Super Easy?
    • New Features in Key Croc 1.3
  • Tips & Tricks
    • Interactive Payload Development
    • Installing Extras like Metasploit
    • Helpful Payload Snippets
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  • STEP 1: DOWNLOAD THE LATEST FIRMWARE
  • STEP 2: CONNECT THE KEY CROC IN ARMING MODE
  • STEP 3: COPY THE FIRMWARE TO THE KEY CROC
  • STEP 4: UNPLUG AND REPLUG THE KEY CROC

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  1. Key Croc Basics

Updating the Firmware

Last updated 1 year ago

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The Key Croc ships with a basic key-logging firmware. Unlock additional features like , advanced keystroke injection and payloads by following this guide.

STEP 1: DOWNLOAD THE LATEST FIRMWARE

from . Do not extract the .tar.gz archive (Safari users: ). Do not proceed until the file checksum has been verified against the SHA256 listed from the download site as a damaged file will corrupt the device.

STEP 2: CONNECT THE KEY CROC IN ARMING MODE

Plug the Key Croc into your computer. After 30 seconds, press the arming button with a paperclip or similar. The LED will blink blue, and a KeyCroc USB flash drive will appear on your computer.

STEP 3: COPY THE FIRMWARE TO THE KEY CROC

Copy the downloaded .tar.gz upgrade file to the root of the KeyCroc drive. When the firmware file copy is complete, safely eject the KeyCroc drive.

STEP 4: UNPLUG AND REPLUG THE KEY CROC

Unplug and replug Key Croc. The LED will show a red/blue pattern for about 10 minutes. DO NOT unplug the Key Croc during this process as doing so irreparably damages the device.

When the firmware upgrade is complete the device will reboot, indicated by a green LED. Your Key Croc is now up to date. If the Key Croc does not automatically reboot, wait 5 minutes after the LED has turned off, then unplug and replug. Version may be verify form version.txt on the root of the KeyCroc flash disk.

Cloud C2
Download the latest Key Croc firmware
downloads.hak5.org
disable automatic unzipping