Windows x64 Assembly

 TRYHACKME - Windows x64 Assembly

 

Task 1 Introduction

#1 :- Now that you have been introduced to the way computers think, let's move on to how they work.

Answer :- No Needed Answer

Task 2 Number Systems 

#2.1 :- What is 0xA in decimal?

Answer :- 10

#2.2 :- What is decimal 25 in hexadecimal? Include the prefix for hexadecimal.

Answer :- 0x19

Task 3 Bits and Bytes

#3.1 :- How many bytes is a WORD?

Answer :- 2

#3.2 :- How many bits is a WORD?

Answer :-16

Task 4 Binary Operations 

#4.1 :- What is the result of the binary operation: 1011 AND 1100?

Answer :- 1000

#4.2 :- What is the result of the binary operation: 1011 NAND 1100? Include leading zeroes.

Answer :- 0111

Task 5 Registers

#5.1 :- How many bytes is RAX?

Answer :- 8

#5.2 :- How many bytes is EAX?

Answer :- 4

Task 6 Instructions

#6.1 :- What instruction returns from a function?

Answer :- ret

#6.2 :- What instruction will call/execute a function?

Answer :- call

#6.3 :- What instruction could be used to save a register in a way that it can later be restored?

Answer :- push

Task 7 Flags 

#7 :- If two equal values are compared to each other, what will ZF be set to as result of the comparison?

Answer :- 1

Task 8 Calling Conventions 

#8.1 :- In fastcall, what 64-bit register will hold the return value of a function?

Answer :- rax

#8.2 :- In fastcall, what register is the first function parameter passed in?

Answer :- rcx

Task 9 Memory Layout 

#9 :- In what order is data taken off of or put onto the stack? Provide the acronym.

Answer :- lifo

Task 10 Final Thoughts

#10 :- Go forth and do great things!

Answer :- No Needed Answer