B-LE - GATT Architectural Overview - Revision history

AMaksimovic: /* Example UUIDs of a Polar Smartwatch */

2024-12-05T16:16:16Z

Example UUIDs of a Polar Smartwatch

← Older revision		Revision as of 16:16, 5 December 2024
Line 53:		Line 53:

	== Example UUIDs of a Polar Smartwatch ==		== Example UUIDs of a Polar Smartwatch ==

			These captures are from: [[Setting Up Ubertooth on macOS for Bluetooth Hacking]]

	Example Device UUID:		Example Device UUID:

AMaksimovic: /* References */

2024-12-05T16:14:44Z

References

← Older revision		Revision as of 16:14, 5 December 2024
Line 111:		Line 111:
	* https://bleak.readthedocs.io/en/latest/usage.html		* https://bleak.readthedocs.io/en/latest/usage.html
	* https://www.bluetooth.com/de/bluetooth-resources/intro-to-bluetooth-gap-gatt/		* https://www.bluetooth.com/de/bluetooth-resources/intro-to-bluetooth-gap-gatt/
			* https://www.bluetooth.com/specifications/assigned-numbers/
	[[Category:Documentation]]		[[Category:Documentation]]

AMaksimovic: /* Services */

2024-12-05T16:09:31Z

Services

← Older revision		Revision as of 16:09, 5 December 2024
Line 35:		Line 35:
	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	Example services are ~~[[Bluetooth Specifications]]~~ [[https://www.bluetooth.com/specifications/assigned-numbers/]]:		Example services are [[https://www.bluetooth.com/specifications/assigned-numbers/ Bluetooth Specifications]]:

	Alert Notification Service 0x1811		Alert Notification Service 0x1811

AMaksimovic: /* Services */

2024-12-05T16:06:34Z

Services

← Older revision		Revision as of 16:06, 5 December 2024
Line 35:		Line 35:
	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	Example services are [Bluetooth Specifications [https://www.bluetooth.com/specifications/assigned-numbers/]]:		Example services are [[Bluetooth Specifications]] [[https://www.bluetooth.com/specifications/assigned-numbers/]]:

	Alert Notification Service 0x1811		Alert Notification Service 0x1811

AMaksimovic: /* Services */

2024-12-05T16:05:57Z

Services

← Older revision		Revision as of 16:05, 5 December 2024
Line 35:		Line 35:
	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	Example services are [Bluetooth[https://www.bluetooth.com/specifications/assigned-numbers/]]:		Example services are [Bluetooth Specifications [https://www.bluetooth.com/specifications/assigned-numbers/]]:

	Alert Notification Service 0x1811		Alert Notification Service 0x1811

AMaksimovic: /* Services */

2024-12-05T16:05:29Z

Services

← Older revision		Revision as of 16:05, 5 December 2024
Line 35:		Line 35:
	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	Example services are [Bluetooth~~.com~~[https://www.bluetooth.com/specifications/assigned-numbers/]]:		Example services are [Bluetooth[https://www.bluetooth.com/specifications/assigned-numbers/]]:

	Alert Notification Service 0x1811		Alert Notification Service 0x1811

AMaksimovic: /* Services */

2024-12-05T16:05:03Z

Services

← Older revision		Revision as of 16:05, 5 December 2024
Line 35:		Line 35:
	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	Example services are [[https://www.bluetooth.com/specifications/assigned-numbers/]]:		Example services are [Bluetooth.com[https://www.bluetooth.com/specifications/assigned-numbers/]]:

	Alert Notification Service 0x1811		Alert Notification Service 0x1811

AMaksimovic: /* Services */

2024-12-05T16:04:20Z

Services

← Older revision		Revision as of 16:04, 5 December 2024
Line 34:		Line 34:

	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

			Example services are [[https://www.bluetooth.com/specifications/assigned-numbers/]]:

			Alert Notification Service 0x1811
			Audio Input Control Service 0x1843
			Authorization Control Service 0x183D
			Battery Service 0x180F
			Binary Sensor Service 0x183B
			Blood Pressure Service 0x1810
			Broadcast Audio Scan Service 0x184F
			Common Audio Service 0x1853

	=== Characteristics ===		=== Characteristics ===

AMaksimovic at 16:00, 5 December 2024

2024-12-05T16:00:26Z

← Older revision		Revision as of 16:00, 5 December 2024
Line 83:		Line 83:
	* Notify = Get notifications to value changes of a device by subscribing to it		* Notify = Get notifications to value changes of a device by subscribing to it

	== Further Context ==		= Further Context =

	For further context and practical examples make sure to read:		For further context and practical examples make sure to read:
Line 89:		Line 89:
	* Setting Up Ubertooth on macOS for Bluetooth Hacking [https://wiki.elvis.science/index.php?title=Setting_Up_Ubertooth_on_macOS_for_Bluetooth_Hacking]		* Setting Up Ubertooth on macOS for Bluetooth Hacking [https://wiki.elvis.science/index.php?title=Setting_Up_Ubertooth_on_macOS_for_Bluetooth_Hacking]

	== Courses ==		= Courses =

	* [[Selected IT-Security Chapters]] (2024)		* [[Selected IT-Security Chapters]] (2024)

	== Author ==		= Author =
	Are Maksimović		Are Maksimović

	== References ==		= References =

	* https://bleak.readthedocs.io/en/latest/usage.html		* https://bleak.readthedocs.io/en/latest/usage.html
	* https://www.bluetooth.com/de/bluetooth-resources/intro-to-bluetooth-gap-gatt/		* https://www.bluetooth.com/de/bluetooth-resources/intro-to-bluetooth-gap-gatt/
	[[Category:Documentation]]		[[Category:Documentation]]

AMaksimovic at 15:59, 5 December 2024

2024-12-05T15:59:38Z

← Older revision		Revision as of 15:59, 5 December 2024
Line 23:		Line 23:
	As soon as two Bluetooth Low Energy devices establish a connection they can start transfering data back and forth. This data is formated into Services and Characteristics in a Server/Client relationship.		As soon as two Bluetooth Low Energy devices establish a connection they can start transfering data back and forth. This data is formated into Services and Characteristics in a Server/Client relationship.

	== ATT - Attribute Protocol ==		=== ATT - Attribute Protocol ===

	GATT is based on ATT. Each attribute gets it’s own Unique Identifier (UUID) here. These get ~~formatted~~ as characteristics and services.		GATT is based on ATT. Each attribute gets it’s own Unique Identifier (UUID) here. It takes care of the data exchange and error handling. These get categorized as characteristics and services with GATT.

	=== Profiles ===		=== Profiles ===

	set of services ~~per Profile~~		Each profile has a set of services according to its profile type. Example profiles are Basic audio profiles, Location and navigation profiles, weight scale profile, heart rate profile, etc...
	Example profiles: Basic audio ~~profile~~, Location and navigation ~~profile~~, weight scale profile, heart rate profile

	=== Services ===		=== Services ===

	A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions, value		A Service can have multiple characteristics. It has it’s own UUID. It has a handle. UUID, permissions and a value.

	=== Characteristics ===		=== Characteristics ===
Line 40:		Line 39:
	The characteristics are the lowest-level of the GATT Profiles. They also each use their own UUID.		The characteristics are the lowest-level of the GATT Profiles. They also each use their own UUID.
	These are relevant when it comes to protecting and enhancing security of a Bluetooth Low Energy device.		These are relevant when it comes to protecting and enhancing security of a Bluetooth Low Energy device.
	The characteristics have a value, properties and human-readable descriptors		The characteristics have a value, properties and human-readable descriptors.

	== Example UUIDs of a Polar Smartwatch ==		== Example UUIDs of a Polar Smartwatch ==
Line 55:		Line 54:
	Service: 0000180f-0000-1000-8000-00805f9b34fb (Handle: 42): Battery Service		Service: 0000180f-0000-1000-8000-00805f9b34fb (Handle: 42): Battery Service

	Example ~~Service~~ and their ~~Characteristics~~ UUIDs including handles, permissions, properties, values, descriptors:		Example service and their characteristics UUIDs including handles, permissions, properties, values, descriptors:

	Service: 0000180a-0000-1000-8000-00805f9b34fb (Handle: 14): Device Information		Service: 0000180a-0000-1000-8000-00805f9b34fb (Handle: 14): Device Information
Line 75:		Line 74:

	== BLE Operations ==		== BLE Operations ==

			Based on the characteristic's properties these operations can be executed on the target devices characteristics:

	* Read = Read the data of a characteristic		* Read = Read the data of a characteristic
Line 84:		Line 85:
	== Further Context ==		== Further Context ==

	~~Make~~ sure to read		For further context and practical examples make sure to read:

	* Setting Up Ubertooth on macOS for Bluetooth Hacking [https://wiki.elvis.science/index.php?title=Setting_Up_Ubertooth_on_macOS_for_Bluetooth_Hacking]		* Setting Up Ubertooth on macOS for Bluetooth Hacking [https://wiki.elvis.science/index.php?title=Setting_Up_Ubertooth_on_macOS_for_Bluetooth_Hacking]