Command syntax

BadUsb app uses extended Duckyscript syntax. It is compatible with classic USB Rubber Ducky 1.0 scripts but provides some additional commands and features, such as custom USB ID, ALT+Numpad input method, SYSRQ command, and more functional keys.

Script file format

BadUsb app can execute only text scripts from .txt files, no compilation is required. Both \n and \r\n line endings are supported. Empty lines are allowed. You can use spaces or tabs for line indentation.

Command set

Comment line

Just a single comment line. The interpreter will ignore all text after the REM command.

Command	Parameters	Notes
REM	Comment text

Delay

Pause script execution by a defined time.

Command	Parameters	Notes
DELAY	Delay value in ms	Single delay
DEFAULT_DELAY	Delay value in ms	Add delay before every next command
DEFAULTDELAY	Delay value in ms	Same as DEFAULT_DELAY

Special keys

Command	Notes
DOWNARROW / DOWN
LEFTARROW / LEFT
RIGHTARROW / RIGHT
UPARROW / UP
ENTER
DELETE
BACKSPACE
END
HOME
ESCAPE / ESC
INSERT
PAGEUP
PAGEDOWN
CAPSLOCK
NUMLOCK
SCROLLLOCK
PRINTSCREEN
BREAK	Pause/Break key
PAUSE	Pause/Break key
SPACE
TAB
MENU	Context menu key
APP	Same as MENU
Fx	F1-F12 keys

Modifier keys

Can be combined with a special key command or a single character.

Command	Notes
CONTROL / CTRL
SHIFT
ALT
WINDOWS / GUI
CTRL-ALT	CTRL+ALT
CTRL-SHIFT	CTRL+SHIFT
ALT-SHIFT	ALT+SHIFT
ALT-GUI	ALT+WIN
GUI-SHIFT	WIN+SHIFT
GUI-CTRL	WIN+CTRL

Key hold and release

Up to 5 keys can be hold simultaneously.

Command	Parameters	Notes
HOLD	Special key or single character	Press and hold key until RELEASE command
RELEASE	Special key or single character	Release key

String

Command	Parameters	Notes
STRING	Text string	Print text string
STRINGLN	Text string	Print text string and press enter after it

String delay

Delay between keypresses.

Command	Parameters	Notes
STRING_DELAY	Delay value in ms	Applied once to next appearing STRING command
STRINGDELAY	Delay value in ms	Same as STRING_DELAY
DEFAULT_STRING_DELAY	Delay value in ms	Apply to every appearing STRING command
DEFAULTSTRINGDELAY	Delay value in ms	Same as DEFAULT_STRING_DELAY

Repeat

Command	Parameters	Notes
REPEAT	Number of additional repeats	Repeat previous command

ALT+Numpad input

On Windows and some Linux systems, you can print characters by holding ALT key and entering its code on Numpad.

Command	Parameters	Notes
ALTCHAR	Character code	Print single character
ALTSTRING	Text string	Print text string using ALT+Numpad method
ALTCODE	Text string	Same as ALTSTRING, presents in some Duckyscript implementations

SysRq

Send SysRq command

Command	Parameters	Notes
SYSRQ	Single character

Media keys

Some Media/Consumer Control keys can be pressed with "MEDIA" command

Command	Parameters	Notes
MEDIA	Media key, see list below

Key name	Notes
POWER
REBOOT
SLEEP
LOGOFF
EXIT
HOME
BACK
FORWARD
REFRESH
SNAPSHOT	Take photo in a camera app
PLAY
PAUSE
PLAY_PAUSE
NEXT_TRACK
PREV_TRACK
STOP
EJECT
MUTE
VOLUME_UP
VOLUME_DOWN
FN	Fn/Globe key on Mac keyboard
BRIGHT_UP	Increase display brightness
BRIGHT_DOWN	Decrease display brightness

Fn/Globe key commands (Mac/iPad)

Command	Parameters	Notes
GLOBE	Special key or single character

Wait for button press

Will wait indefinitely for a button to be pressed

Command	Parameters	Notes
WAIT_FOR_BUTTON_PRESS	None	Will wait for the user to press a button to continue script execution

USB device ID

You can set the custom ID of the Flipper USB HID device. ID command should be in the first line of script, it is executed before script run.

Command	Parameters	Notes
ID	VID:PID Manufacturer:Product

Example: ID 1234:abcd Flipper Devices:Flipper Zero

VID and PID are hex codes and are mandatory. Manufacturer and Product are text strings and are optional.