Reverse Basics

Binary Stuff 4 Bit -> Nibble 8 Bit = 1 Byte 16 Bit = 2 Byte -> Word 32 Bit = 4 Byte -> Double Word 64 Bit = 8 Byte -> Quad Word Hex 0xffffd040 is 4 bytes and is a double word CPU 4 Parts 1) Control Unit Retrieves and decodes instructions from the CPU and then storing and retrieving them to and from memory 2) Execution Unit Where the execution of fetching and retrieving instructions occurs 3) Registers Internal CPU memory locations used a temporary data storage 4) Flags Indicate events when execution occurs Registers EIP: Instruction Pointer contains the address of the next instruction to be fetched from memory and then executed General-purpose Registers EAX: Main register used in arithmetic calculations.