Now, you can find out which one is this mouse? You can see all the USB devices connected with the lsusb command. In this example, I have a wireless mouse under VMware, which is a HID device. The above picture is a list of USB devices connected to my computer in a virtual machine. Product ID is used for different types of products. Vendor ID is used to mark which manufacturer made this USB device. The most widely used USB type is USB Memory.Įach USB device (especially HID or Memory) has a vendor ID (Vendor ID) and a product identifier (Product Id). External HDD, thumb drive/flash drive, etc. This type is suitable for interactive applications such as keyboards, mice, gamepads, and digital display devices. UART or Universal Asynchronous Receiver/Transmitter is a simple device that uses USB to receive and transmit data. USB has different specifications, the following are three different types of USB: USB Traffic Packet Capture ¶īefore we get started, let's introduce some of the basics of USB. The full keyboard keymap can be found here on page 53 to 59.īy extracting 3 rd bytes within the keyboard packets, you can recover all the keystrokes pressed. The data length of a keyboard packet is 8 bytes.Įach value corresponds to different keys. The third byte, like the second byte, represents an offset that moves vertically up and down.īy extracting those bytes in the USB mouse packets, you can recover the mouse movement.
When negative, it shows how many pixels it has moved horizontally to the left. When positive, it represents how many pixels the mouse has moved horizontally to the right. The second byte is a signed byte, where the highest bit is the sign bit. 0x00 is no buttons pressed, 0x01 indicates left button pressed, and 0x02 indicates right button pressed. The first byte represents buttons pressed.
The data length of a mouse packet is 4 bytes. The Operating Mechanism of the Java Layer in Android Introduction to The Principle of Integer OverflowĪndroid Application Operating Mechanism Brief Manually Find the IAT and Rebuild It Using ImportRECīasic Functions in the heap implementation Software Reverse Engineering IntroductionĬommon Encryption Algorithms and Code Recognition Cryptographic Security Pseudo-random Number Generator
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