Solved-Homework- Solution

Description

Ethics

1. Is it illegal to hack a machine that you do not own or have permission to hack? Solution:

2. Is it illegal to hack software that you do not own or have permission to hack? Solution:

3. Should you mess with your friends computer when they’re not looking? What if you ask for permission?

Solution:

C

1. What is the output of the following code? (do it by hand)

#include <stdio.h> #include <stdlib.h> #define xor “yup”

int tater_tots(int beans){ exit(0); printf(“%X\n”, beans); return 21;

}

int apples(const char* snickers){

printf(“%s”, snickers); return 0xBABECAFE;

}

int basketball(){

int (*c)(const char*) = &apples; int cool = apples(xor); printf(“%d”,tater_tots(cool));

}

int main(){ __asm__(

“jmp basketball” );

printf(“hello world\n”);

goto yeet;

return 1337;

yeet:

printf(“bye\n”);

return 9001;

}

Solution:

Assembly

1. What’s in the RAX register at the end of main?

main:

mov rax, 2 ret

Solution:

2. What’s in the RAX register at the end of main?

main:

mov ax, 2 movzx ebx, ax lea rax, ebx ret

Solution:

3. What’s in the RAX register at the end of main?

main:

mov ax, 0x37 mov al, 0x13

mov rbx, 0xFFFFFFFFFFFFFFFF add eax, 0xB33935

xor rbx, rax ret

Solution:

About you

1. How would you rate your knowledge of cybersecurity in general from 1 to 10? Solution:

2. How would you rate your knowledge of reverse engineering on a scale of 1 to 10? Solution:

3. Have you taken CMSC389R, CMSC414, HACS201, HACS408E, or ENEE459B? If so which ones. Solution:

4. What are you looking to learn from this class?

Solution:

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