Liked that one, since it is an easy example of how to disassemble code and make sense of what is readable. Perfect as a beginner tutorial.

These videos are the spam I like to get, each one with GREAT info on CTFs. Thanks John!

In case anyone else was curious what the 'unscramble_flag' function did, here's the rough equivelent in Python 3: bytes([ b + (0x2F if b 0x41, 0x3a, 0x34, 0x40, 0x72, 0x25, 0x75, 0x4c, 0x34, 0x46, 0x66, 0x30, 0x66, 0x39, 0x62, 0x30, 0x33, 0x3d, 0x5f, 0x63, 0x66, 0x30, 0x62, 0x65, 0x35, 0x35, 0x62, 0x60, 0x65, 0x32, 0x4e ]) ])

@Lampe2020

Жыл бұрын

I first saw the code then the description you gave but I immediately recognized it as Python3-code because two of my last three Python3-projects involved exactly that, converting lists of numbers between 0x00 and 0xff to byte strings (`bytes` object) XD

Been loving the PICO CTF videos you’ve been making have watch most of them and have been learning a lot as i am just a noob in IT

I like the way you take us through step by step. I am learning a lot from these videos.

@arr3business939

Жыл бұрын

same

Thank you for making these videos! I'm new to this, so being able to see how this works first-hand is extremely helpful.

I’ll be honest, a lot of your videos I have no idea what you are doing, but I enjoy watching you and your skill set and what is possible with the right tools. 🙏

Did you just accidentally release every video for the next weeks/months at once? Holy moly, that's a lot of stuff in my Watch Later playlist now! x)

@VA3KAMA3

2 жыл бұрын

same. just have had a marathon watching them

@theamazingjay161

2 жыл бұрын

Okay, so I'm not the only one.

The more spend I time on your channel the more I learn.

I'm so bad at RE but love watching others do it so I can pick up on little things each time.

@jackscalibur

3 ай бұрын

Hey! Do you feel like you're better at it now?

I have no idea why KZread decided to recommend me these videos but I'm glad it did. This is awesome!

@vivarantx

Жыл бұрын

same here, I was watching people eating 30 bags of cheetos and I ended up here

@kiizuha

Жыл бұрын

@@vivarantx lmao

Love this intricate logic tricks.

A flashback and relearning TY!

Man u r DANGEROUS! lol 🙃☺ keep ur great work up dude! 💪

I appreciate hearing your thought process as you go through the challenge

Very nice video about rev, thx.

i just love you man,you are just awesome....... hope someday i will meet u in person.... u r doing a great job... keep it up. ❤️❤️

couldn't this be done in some other way, my feed is filled with all those uploads making it harder to browse, don't wanna unsubscribe cus I appreciate your work though!

@TheJustinist

2 жыл бұрын

Yep, unsubbed

@KoskiK

2 жыл бұрын

Quite the same, after the first burst of videos I figured it was just a mistake or an error with the scheduler. After this new one I unsubbed unfortunately, as I enjoyed the content. KZread should by now have made a limit, say 3 posts of a single person in the sub feed.

@ocoolwow

2 жыл бұрын

@@KoskiK ah that would actually assume that KZread would output usable work

@zdrasbuytye

Жыл бұрын

You can do reverse engineering with the Linux shell only .

Would love to see a video on rebasing. I have a hard time with alignment using strings. Would love a newbie friendly of you rebasing binaries that do not align in disassembler. thanks!!

This was interesting. Liked and subscribed.

Great video

This is my first time seeing Reverse Engineering. I am like WOW, this is so fun to watch & do. THanks John for introducing this very interesting things to us. :)

KZread after seeing so many uploads: i'm gonna end this man's whole career

Awesome bro

I really liked this one.

Great stuff

I like the fact that in each ctf videos, I learn new tools to use for hacking. Now I check the bell icon. Keep on going man, u the best

Awesome!

That was cool man!

Love me some Ghidra!

I like the term "low-hanging fruit 🍓" 😊

Very Nice

This would have been a perfect intro tutorial to reverse engineering with Ghidra

Nice!

As far as open source content goes, John, you’re an OG. A goat. Appreciate the content and knowledge dude, stay humble.

Nice one

Awesome

hello sir your videos are great it helped me for solving and understanding all the ctfs of thm

Easy with the upload sir

You can use "apt search" too for package searching

@lancemarchetti8673

Жыл бұрын

agreed

you should also check out cutter

It's a good video

nice

Sir big fan of yours from Lamatol village, golbazar-06 municipality, siraha district, sagarmatha zone, Madhesh Pradhesh (province no 2), nepal 🇳🇵

I wish I had a nice laptop like yours 🥺

TF I just watched! Interesting

Hi John, can you please review "angr" for us. I don't have a clue where to start...lol

oh look a user agreement, "i agree" never to be thought of again

6:20 (sdkman is a good tool for downloading java stuff)

I guess its kinda good you didn't have the environment requirements preinstalled

can't wait till you go over noted, was my favorite one

but you can make the same video with the imusic aimersoft program?

MAHYOUB WE MISS YOU

what will happen if I swap the iF and else condition

at 13:26 you already got the decimal by hovering over the number

@MrLetsGamePlayHD

2 жыл бұрын

In ghidra you can also change the display type

The word "Bbbbbbbloat" is a bloated word and has the same effect as a mass of bloatware has on a PC: it works, but slower.

There are 11 hidden videos in the playlist, when do we get them? :)

i got it 🙋🏾‍♂️. where can i learn this reverse engineering

John can you post the code that formats your bash (or zsh) prompt? From your .bashrc or wtvr config file. I like that two-line prompt.

@Mathcartney

2 жыл бұрын

Its zsh the shell that he uses, it isn’t bash. And the theme is the default kali theme. There are many other custom themes and wrappers such as powerlevel10k if you dig it deeper tho

My etc/apt/sources.list is using Kali Linux's default repo, but I can only install strace. ltrace keeps getting an error: "Unable to locate package". Has anyone figured out a working alternative repo?

Wait this is intresting

👍

Headless for Java means its stripped of mouse and keyboard input libraries and whatnot. Badly breaks java swing, so you probably don't want to use that.

what if we reverse engineer Ghidra binarys using GHidra?

Please 🙏 sir can I use this to do reverse engineering on my mobile app??? Can someone help me out

nice and simple, but fun nonetheless! Does picoCTF have have challenges that are more based on web applications?

@iKilleasy007

2 жыл бұрын

picoCTF has a web exploitation category

Everytime I Try to run a binary file on my kali linux I am getting exec format error...so I am not able to solve any rev engineering problems....can someone plss help with it🙏🙏🙏🙏

Another way of converting from hex to decimal is with the `printf` command which can be found on any linux system; use `printf %d 0xc0ffee` to see

can you send us your shell modifications? This looks so cool.

...would it be possible to have subtitles in Portuguese ???

Has anyone on bohemia has their initial deposit asst changed..

What is the Linux wizardry… dude was flying through the terminal like nobody’s business

Sup

Does anyone have the bbbblob file to try it out?

Can we reverse engineer malware and then remove them this way ?

@bmbiz

Жыл бұрын

That's pretty much the _only_ way to remove previously unknown malware: reverse engineer it, figure out all changes it makes and then undo all those changes on an infected system.

im watching your video and honestly i'm 80% didn't understand what are you doing exactly. i wonder what level is that ? im sure it is advanced level . where to start to achieve your level ??

wtf, this is weird I had been watching your videos and even follow you in LinkedIn for years and just found out I wasn't subscribed to your channel. KZread be playing tricks, they welcome you with your favorite channel for ever and you will never know you weren't subscribed because everytime you open youtube and see the same person there you automatically think you are subscribed

Hi , I am new PicoCTF . and i try to solve that for practice if i cant i am looking for in google for solving . But I cant find picoCTF notepad Author: ginkoid . Can you help me? How can i solve that

Question: why didn’t he “trust” the Ghidra from the official Kali repo? Why go through the process of installing manually??

@SheIITear

2 жыл бұрын

Stuff from the repos on your distro tend/might be really old. In case of ghidra you just download and extract it so thats the fastest way to get the latest.

@MisterK-YT

2 жыл бұрын

@@SheIITear noted! Thanks!

@vaisakhkm783

2 жыл бұрын

I wanted to ask same. I thought it might be the reason but to make sure... Is that a problem with distros like fedora or arch!?... those are more up to date than Debi an right!?

What is this stuff called? Cybersecurity?

@NexushasTaken

11 ай бұрын

its already in the video title.

ez

Man, nothing like getting spammed. Should have spaced it out.

Hey jhon can you please tell me how I can trace the memory leak from heapdump file?

You seemed disappointed that you got the flag so quickly.

John 1337 the king

You gotta stop man, this is flooding my sub box

I do not have time with all these load it opens this read there and there then crack it i refuse all these stuff at the end you have to find the way to get in to the software, easy ways quickly just load malware to infect

process or RE with binary ninja: step 1: load the binary. step 2: see the number in plain text from the decompiler. step 3: profit

Is this the apparently kid all grown up?

Yt algo

I solve it by viewing your video but you did it late by looking for other stuffs. Maybe you do to let us all understand everything

cool but i didn't understand a single word said in this video

beautiful hair ........ I want to touch it haha

Have you ever got a live virus on your own system? Or a RAT?

m9wd

its too simple

Removed from my feed for uploading 18 videos at a time. You know how KZread works and that is not how you do it.

@ocoolwow

2 жыл бұрын

Bye don't let the door hit you on the way out

why your voice like ill man, my tonsil hurts now AAAH

High Level Forgetting

I gotta unsub for a little bit until this wave is finished with. You are absolutely flooding my subscribe stream.