Game Programming Concepts Quiz
45 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is required to use the ReadProcessMemory function?

  • iostream
  • stdlib.h
  • stdio.h
  • Windows.h (correct)

    • The size of the data to read for the registers is 8 bytes.

    False

    What data type is suggested for storing the values returned by ReadProcessMemory?

    DWORD

    The main function in C++ starts with (blank) and ends with return 0;

    <p>int main(int argc, char** argv)</p> Signup and view all the answers

    Match the following components with their descriptions:

    <p>base address = Starting point of memory read gold_value = Variable holding the read value bytes_read = Variable holding actual bytes read ReadProcessMemory = API function for reading memory</p> Signup and view all the answers

    What does the increase_money function do in the Player class?

    <p>Increases the player's money by 1</p> Signup and view all the answers

    The mov command is used to remove resources from RAM.

    <p>False</p> Signup and view all the answers

    What type of model do multiplayer games use to allow players to interact?

    <p>Client-server model</p> Signup and view all the answers

    In a typical game, resources like images and sounds are loaded from the hard drive into ______.

    <p>RAM</p> Signup and view all the answers

    Match the programming components with their descriptions:

    <p>Player class = Defines player attributes like money and name increase_money function = Increments the player's money mov command = Moves data within memory client = Represents each player's copy of the game</p> Signup and view all the answers

    How does the server receive updates about a player's actions?

    <p>From the player’s client</p> Signup and view all the answers

    The Player class encapsulates player data and game mechanics.

    <p>True</p> Signup and view all the answers

    What is typically done with game data during the setup phase?

    <p>Loaded into RAM</p> Signup and view all the answers

    What is the purpose of a code cave in hacking?

    <p>To redirect code execution to a controlled memory area.</p> Signup and view all the answers

    Reversing combines previous methods to retrieve the address we care about.

    <p>True</p> Signup and view all the answers

    What register is referenced when determining the gold memory address in the example provided?

    <p>edx</p> Signup and view all the answers

    What is the purpose of modifying Wesnoth's code in this chapter?

    <p>To prevent recruitment from costing gold</p> Signup and view all the answers

    The instruction responsible for decreasing gold during recruitment is 'sub dword ptr ds:[edx+4], ecx'. This means that _____ contains the cost of the unit just recruited.

    <p>ecx</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Code Cave = A redirection method for custom code execution Reversing = Analyzing instructions to find base pointers DMA = Direct Memory Access edx = Register used for gold memory address reference</p> Signup and view all the answers

    Dynamic Memory Allocation (DMA) refers to the process where the gold address remains the same throughout the game.

    <p>False</p> Signup and view all the answers

    Which method requires finding an instruction that modifies a specific value?

    <p>Reversing</p> Signup and view all the answers

    What value will be used as the gold address in this chapter?

    <p>0x051D875C</p> Signup and view all the answers

    The debugger that will be used in this chapter is called __________.

    <p>x64dbg</p> Signup and view all the answers

    The final method of dealing with DMA is considered the least versatile.

    <p>False</p> Signup and view all the answers

    What is the base target for the methods discussed in this chapter?

    <p>Wesnoth 1.14.9</p> Signup and view all the answers

    Match the components of the debugger with their descriptions:

    <p>Code Section = Displays the executed code Dump Section = Displays memory in hex and ASCII representation Registers = Shows the values of all registers Stack = Contains the application's stack information</p> Signup and view all the answers

    What must be done to locate the game code that decreases gold?

    <p>Recruit a unit while monitoring gold address</p> Signup and view all the answers

    X64dbg provides a Symbols tab that allows switching to the game's code and memory space.

    <p>True</p> Signup and view all the answers

    The path to the x64dbg executable is __________.

    <p>C:\ProgramData\chocolatey\lib\x64dbg.portable\tools\release\x32\x32dbg.exe</p> Signup and view all the answers

    What is the purpose of a code cave?

    <p>To create a hidden section of instructions in memory.</p> Signup and view all the answers

    A code cave can only be used to replace original instructions with a single new instruction.

    <p>False</p> Signup and view all the answers

    What is the original code instruction for displaying terrain description?

    <p>0x00CCAF90 call dword ptr ds:[eax+28]</p> Signup and view all the answers

    A code cave is typically used in sections of the game's memory that are ______.

    <p>unused</p> Signup and view all the answers

    After implementing a code cave, how can you return to the original code?

    <p>By jumping to the next instruction after the replaced one.</p> Signup and view all the answers

    Match the following memory addresses with their functions:

    <p>0x00CCAF90 = Original instruction for terrain description 0x00D00000 = Code cave's newly created instruction 0x00CCAF93 = Next instruction after the original call 0x00D00003 = Hypothetical address not discussed</p> Signup and view all the answers

    By redirecting the original code, we can invoke both the debug menu and the terrain description functionality.

    <p>True</p> Signup and view all the answers

    What is the first step in implementing a code cave according to the content?

    <p>Recreate the original call at the empty section of memory.</p> Signup and view all the answers

    What does DMA stand for in the context of memory allocation in Wesnoth?

    <p>Direct Memory Access</p> Signup and view all the answers

    The player’s gold address remains constant between games.

    <p>False</p> Signup and view all the answers

    What is the purpose of the Player class in Wesnoth?

    <p>To store constant values related to the player that persist across games.</p> Signup and view all the answers

    The command to create a new Game object in the code is 'player.game = new ______('Human', 100, 1);'

    <p>Game</p> Signup and view all the answers

    Match the following variables with their types and uses in the Player class:

    <p>player_name = string, stores player's name wins = int, counts the number of wins game = Game, links to the current game object</p> Signup and view all the answers

    To find the player's gold address, what should you do first?

    <p>Open Wesnoth and create a local game</p> Signup and view all the answers

    In order to easily find the gold address, you need to ensure that the first player is set to a Computer opponent.

    <p>True</p> Signup and view all the answers

    What is the final step in the process of finding the gold address?

    <p>Set a breakpoint on write on the gold address using x64dbg.</p> Signup and view all the answers

    Study Notes

    Game Hacking Academy - Study Notes

    • This book is a beginner's guide to game hacking techniques.
    • It was created in 2021 and contains material from 2019-2021.
    • The book is distributed freely , but donations are welcome to support future works.
    • Contact information for the author is provided (email and Twitter).
    • External resources are listed, such as software (VirtualBox, Cheat Engine, x64dbg) and games (Wesnoth, Wyrmsun, Urban Terror, Assault Cube).
    • The table of contents provides a detailed outline of the book's structure and topics, including computer fundamentals, game fundamentals, hacking fundamentals, debugging, reversing, programming, and more specific techniques for game hacks.

    1.1 Computer Fundamentals

    • A typical computer has many connected components: hard drive, RAM, video card, motherboard, and CPU.
    • Hard drives store files (such as photos, executables, and other system files).
    • RAM (Random Access Memory) is for quickly accessed data coming from the hard-drive.
    • Video cards handle displaying graphical elements.
    • Motherboards connect components and let them communicate.
    • The CPU (Central Processing Unit) is the "brain" of the computer and handles instruction execution.

    1.1.2 CPU Registers

    • CPU's have small storage areas for data (called registers), used for speeding up instructions like adding two numbers.
    • Registers are used for storing and modifying data within the CPU

    1.1.3 Instructions

    • Computer programs are a series of instructions.
    • Instructions vary based on the architecture but typically involve operations like adding, subtracting, comparing numbers, and moving data in memory.

    1.1.4 Programs and Operations

    • Programs are collections of instructions used to process input and produce output.
    • Programs can be structured into functions.
    • A function, like a program, receives an input and produces an output.

    1.1.5 Binary, Decimal, and Hexadecimal

    • CPUs use binary (base-2) numbers to represent data, using 0 and 1.
    • Decimal (base-10) is the system we use for everyday arithmetic, with digits 0-9.
    • Hexadecimal (base-16) uses digits 0-9 and A-F to represent binary values more concisely.

    1.1.6 Programming Languages

    • Programming languages convert human-readable code into instructions a CPU can execute.
    • Assembly language is closer to the CPU's instructions than other higher-level languages (like C, C++, Java).
    • Higher-level languages like C++, Java, and Python make programming easier and more structured.

    1.1.7 Operating Systems

    • Operating systems (OS) are responsible for managing how a computer interacts with hardware and software.
    • They are essential for handling tasks like running programs, managing hardware devices, and providing a user interface.
    • Examples of OS's are Windows, Linux, and MacOS.

    1.1.8 Applications

    • Applications are programs that perform specific tasks for users.
    • Operating systems manage applications to make use of their functionality and handle user requests.
    • Different systems use various formats, like .exe for Windows programs. 

    1.1.9 Games

    • Games are a type of application with complex logic for game play and interactions
    • This includes handling graphics, sound, input (keys, mouse), and the rules of the game.
    • Games use external libraries for common tasks in a game like graphics.

    1.2 Game Fundamentals

    • Games have various parts: graphics, sound, input, physics, and game logic.
    • Games frequently use external libraries such as DirectX or OpenGL for graphics
    • Game logic describes how the game plays, including actions of characters, object interactions, and other behaviors within the game.

    1.2.2 Game Structure

    • Game structure consists of functions (like Setup or Main Loop).
    • Setup code executes once at the start of a game.
    • Main Loop runs constantly till the game ends and handles interactions, input, updates to the screen and more.

    1.2.3 Data and Classes

    • Game data, like player scores, positions, or inventory is stored in variables.
      • Arrays (or lists) are often used for multiple players or related things. 
    • Classes group the variables together with functions to process or modify that data.

    1.3 Hacking Fundamentals

    • Hacking involves modifying game memory to change in-game values 
    • Steps to modify the game memory include identifying what to change, finding the related memory location, locate-ing it in the game, modifying the memory
    • Different methods to achieve hacks (like modifying variables, specific sections of code, and files in memory.) 
    • Different hacks will require different approaches

    1.4 Setting Up a Lab VM

    • Virtual Machines (VMs) are software that simulate a physical computer and run different OSes.
    • VMs are useful for isolating hacking activities from personal machines to protect personal data and to make sure there are no interferences during the hacking activity.
    • VirtualBox is a free, open-source VM type.
    • Windows 10 is a popular choice for a VM operating system.
    • Using a VM will ensure that no changes will affect the host machine but only the virtual machine.

    1.5 Memory Hack (Target specific)

    • The target game is "The Battle for Wesnoth."
    • The goal is to change the amount of gold a player has.
    • The player's gold is stored in a variable in memory.
    • The steps to change the gold include identifying the variable storing the player's gold value, finding its memory location in the game, and then changing the variable's value through a scanner or debugger.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Description

    Test your knowledge on essential game programming concepts such as memory functions, class structures, and resource management. This quiz covers various topics like process memory reading and multiplayer game dynamics. Perfect for beginners delving into game development!

    More Like This

    2D Game Programming and Graphic Design Elements
    5 questions

    2D Game Programming and Graphic Design Elements

    BetterLesNabis avatar
    BetterLesNabis
    Game Sound Programming: Positional Audio
    15 questions

    Game Sound Programming: Positional Audio

    RetractableSquirrel avatar
    RetractableSquirrel
    C++ Game Programming Fundamentals
    11 questions

    C++ Game Programming Fundamentals

    IntimateAnecdote avatar
    IntimateAnecdote
    Game Programming 2: VR, AR, MR Overview
    43 questions

    Game Programming 2: VR, AR, MR Overview

    HumorousObsidian2070 avatar
    HumorousObsidian2070
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser