Even or odd Program plan: Import necessary package. Create a class “EvenOdd”, Define the method “main ()”, Declare the variable for integer. Create “Scanner” object. Prompt the user to enter an integer. Get the integer from the user using “nextInt()”. Execute if “true” when calling “is_Even()”, If it is true, print the message that indicates an even number Otherwise, print the message that indicates odd number. Define the method “is_Even ()” that accepts an integer, Declare the Boolean variable. Check whether the integer is odd, If it is true, set the Boolean variable to “false”. Otherwise, set the Boolean variable to “true”. Return the Boolean value.

Question

A ROP (Return-Oriented Programming) attack can be used to execute arbitrary instructions by chaining together small pieces of code called "gadgets." Your goal is to create a stack layout for a ROP attack that calls a function located at '0x4018bd3'. Below is the assembly code for the function 'getbuf', which allocates 8 bytes of stack space for a 'char' array. This array is then passed to the 'gets' function. Additionally, you are provided with five useful gadgets and their addresses. Use these gadgets to construct the stack layout. Assembly for getbuf 1 getbuf: 2 sub $8, %rsp 3 mov %rsp, %rdi 4 call gets 56 add $8, %rsp ret #Allocate 8 bytes for buffer #Load buffer address into %rdi #Call gets with buffer #Restore the stack pointer #Return to caller. Stack Layout (fill in Gadgets each 8-byte section) Address Gadget Address Value (8 bytes) 0x4006a7 pop %rdi; ret 0x7fffffffdfc0 Ox4006a9 pop %rsi; ret 0x7fffffffdfb8 0x4006ab pop %rax; ret 0x7fffffffdfb0 0x7fffffffdfa8 Ox4006ad mov %rax,…

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Chapter 5, Problem 1PE

Program Plan Intro

Even or odd

Program plan:

Import necessary package.

Create a class “EvenOdd”,

Define the method “main ()”,

Declare the variable for integer.

Create “Scanner” object.

Prompt the user to enter an integer.

Get the integer from the user using “nextInt()”.

Execute if “true” when calling “is_Even()”,

If it is true, print the message that indicates an even number

Otherwise, print the message that indicates odd number.

Define the method “is_Even ()” that accepts an integer,

Declare the Boolean variable.

Check whether the integer is odd,

If it is true, set the Boolean variable to “false”.

Otherwise, set the Boolean variable to “true”.

Return the Boolean value.

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