TryHackMe | Windows x64 Assembly WriteUp

 

Introduction to x64 Assembly on Windows.

Link- https://tryhackme.com/room/win64assembly


What is 0xA in decimal?

10

What is decimal 25 in hexadecimal? Include the prefix for hexadecimal.

0x19

How many bytes is a WORD?

2

How many bits is a WORD?

16

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

1000

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

0111

How many bytes is RAX?

8

How many bytes is EAX?

4

What instruction returns from a function?

ret

What instruction will call/execute a function?

call

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

PUSH

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

1

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

RAX

In fastcall, what register is the first function parameter passed in?

RCX

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

LIFO


That’s it! See you in the next Room :)


Comments

Post a Comment

Eonrec

Ads by Eonads

Popular posts from this blog

TryHackMe | Introduction To Honeypots Walkthrough

Image
  A guided room covering the deployment of honeypots and analysis of botnet activities Link - https://tryhackme.com/room/introductiontohoneypots Create a file and then log back in is the file still there? (Yay/Nay) Nay How many passwords include the word “password” or some other variation of it e.g “p@ssw0rd” 15 What is arguably the most common tool for brute-forcing SSH? hydra What intrusion prevention software framework is commonly used to mitigate SSH brute-force attacks? Fail2Ban What CPU does the honeypot “use”? Run command cat /proc/cpuinfo Intel(R) Core(TM) i9–11900KB CPU @ 3.30GHz Does the honeypot return the correct values when uname -a is run? (Yay/Nay) Nay What flag must be set to pipe wget output into bash? -O How would you disable bash history using unset ? unset HISTFILE What brand of device is the bot in the first sample searching for? (BotCommands/Sample1.txt) Do a simple google search of the processes Mikrotik What are the commands in the second sample changing? ...
Read more

TryHackMe | DFIR: An Introduction WriteUp

Image
  Introductory room for the DFIR module Link - https://tryhackme.com/room/introductoryroomdfirmodule What does DFIR stand for? Digital Forensics and Incident Response DFIR requires expertise in two fields. One of the fields is Digital Forensics. What is the other field? Incident Response. Complete the timeline creation exercise in the attached static site. What is the flag that you get after completion? At what stage of the IR process are disrupted services brought back online as they were before the incident? recovery At what stage of the IR process is the threat evicted from the network after performing the forensic analysis? eradication What is the NIST-equivalent of the step called “Lessons learned” in the SANS process? Post-incident Activity That’s it! See you in the next Room :)
Read more

TryHackMe | Intro to Cyber Threat Intel WriteUp

Image
  Introducing cyber threat intelligence and related topics, such as relevant standards and frameworks. Link - https://tryhackme.com/room/cyberthreatintel What does CTI stand for? Cyber Threat Intelligence IP addresses, Hashes and other threat artefacts would be found under which Threat Intelligence classification? Technical Intel At which phase of the lifecycle is data made usable through sorting, organising, correlation and presentation? processing During which phase do security analysts get the chance to define the questions to investigate incidents? direction What sharing models are supported by TAXII? collection and channel When an adversary has obtained access to a network and is extracting data, what phase of the kill chain are they on? action on objectives What was the source email address? vipivillain@badbank.com What was the name of the file downloaded? flbpfuh.exe After building the threat profile, what message do you receive? After solving below you get code That’s it! S...
Read more