BAD RANSOMWARE - HackTheBox Business CTF

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  • Опубликовано: 27 ноя 2024

Комментарии • 59

  • @ulissesalvesoffsec
    @ulissesalvesoffsec 3 года назад +57

    Hey, John... A little tip for printing chars in lists with print instead of having to make list comprehension:
    print(var, end="")
    This will print the data without the default newline.

  • @CodeMonkeyNinja
    @CodeMonkeyNinja 3 года назад +72

    You've mentioned `sleep(0)` does nothing, and from your purpose of deobfuscation, I'm sure it's just an obstacle, but it's a method of yielding the thread, so that an application can share the CPU with other processes running on O/S and not "feel like" the application is hung (for small threads you really want to get the task completed ASAP so you don't even `sleep(0)`, but for threads that takes a while, it's an essential technique to make sure the app isn't greedy)

    • @gabagoul67
      @gabagoul67 3 года назад +3

      why wouldnt you want your app to feel greedy? is that something an anti virus can detect?

    • @CodeMonkeyNinja
      @CodeMonkeyNinja 3 года назад +22

      @@gabagoul67 it just makes the PC (running the O/S, environments (i.e. desktop) and the app) feel locked/hung. What you do not want is users to think "something is wrong" because your PC is going sluggish (meaning, you can probably tell without anti-virus). Yielding allows O/S to prioritize/schedule (fairly) the time slices to keep your O/S responsive. Try writing a simple hello-world in your favorite language of your choice, with an infinite loop without any yielding to the O/S. Then try moving your mouse around (if you're on desktop) or something, on that same session. Then, try adding a yielding instruction...

    • @gabagoul67
      @gabagoul67 3 года назад +4

      @@CodeMonkeyNinja thank you so much for taking the time to answer. really appreciated

  • @StevenIngram
    @StevenIngram 3 года назад +28

    Very nice. And your videos are starting to make me realize how riddled with vulnerabilities our world is. LOL Scary.

  • @MatteoGariglio
    @MatteoGariglio 3 года назад +24

    And this is 1 out of 4 in terms of difficulties?... Whau, what a 4/4 must be?! Super dooper difficult :)
    Your videos are amazing John! Thanks a lot! ;) Cheers

    • @nickheyer
      @nickheyer 3 года назад +1

      when youve done it several times, you get an idea of things you need to look for, even on higher difficulty

  • @viv_2489
    @viv_2489 3 года назад +1

    Always pleasure to watch these videos.. so much hard work behind...

  • @chiragartani
    @chiragartani 3 года назад +1

    Wow you solved this in 22 min. 👏 Awesome ❤️

    • @real_proxymous
      @real_proxymous 3 года назад

      actually he did it 20 min and 33 sec

  • @jacobdavidcunningham1440
    @jacobdavidcunningham1440 3 года назад +1

    Damn that was really neat
    Crazy the lengths it goes to obfuscate

  • @TheKSH991
    @TheKSH991 3 года назад +4

    Man i wish these challenges are available like the boxes on htb would love to try them myself

  • @davecoates2308
    @davecoates2308 3 года назад

    V nice. Enjoyed this! Thank you

  • @_Omni
    @_Omni 3 года назад +2

    Holy balls! Daily videos 🤗

  • @MM-kd1zf
    @MM-kd1zf 3 года назад

    Love you too John ❤️

  • @tapac5183
    @tapac5183 3 года назад

    good job !!!

  • @svilenSt.
    @svilenSt. 3 года назад

    Well done John! I like your way to move fast in research process. Thank's for share :)

  • @erosmlima5981
    @erosmlima5981 3 года назад +1

    Aw3some!

  • @neilthomas5026
    @neilthomas5026 3 года назад

    Very epic as always

  • @sob3ygrime
    @sob3ygrime 3 года назад

    Awesome video thanks

  •  3 года назад +1

    i asked to myself, where is the Master's daily works and you are in there, im too hapy , thx for videos

  • @FluePeak
    @FluePeak 3 года назад +1

    Dont know what you are doing, neither am i good at code or enything but daym this is fun to watch

  • @zaedabdullah2015
    @zaedabdullah2015 3 года назад

    always love your video. Hope. this pandemic will over

  • @Irisilol
    @Irisilol 3 года назад

    Your videos are amazing!

  • @MBND156
    @MBND156 3 года назад +4

    Now i remember why i love coding

    • @bahai02
      @bahai02 3 года назад

      Then you must teach me

  • @soojinchong8354
    @soojinchong8354 3 года назад

    Waiting R.E category 😋😋

  • @tylercoombs1
    @tylercoombs1 Год назад

    This looks like it was probably the same author as the original VB script, it's almost a 1:1

  • @FuTunisia
    @FuTunisia 3 года назад

    Random question, do you think burpsuite pro is worth it ?

  • @ankitminz5872
    @ankitminz5872 3 года назад

    They love trigonometry lol

  • @alisarwar3399
    @alisarwar3399 3 года назад

    john i am a freshie , and i want to learn cyber secuirty. can you suggest me anything i can learn with my university life? so i can be like you someday????

  • @stayaway9828
    @stayaway9828 3 года назад

    Why don't you use a debugger to automate deobfuscation?

  • @drahoxx3076
    @drahoxx3076 3 года назад

    Which linux distribution is it ?

  • @sageinquisitor
    @sageinquisitor 3 года назад

    Why don't you just run the code with the powershell command commented out and echo the output?

  • @rasulmuhammad2343
    @rasulmuhammad2343 3 года назад

    How did you select all the sleep words and delete only them

    • @harvuk7729
      @harvuk7729 3 года назад +2

      find and replace with null

  • @bhagyalakshmi1053
    @bhagyalakshmi1053 Год назад

    How to creation also filename creation for go 'r ✍️'!

  • @Shorstopmwd
    @Shorstopmwd 3 года назад +7

    As opposed to...good ransomware?

    • @mattplaygamez
      @mattplaygamez 3 года назад +2

      LoL

    • @SuperHolySheep
      @SuperHolySheep 3 года назад +2

      The only good ransomeware is porn

    • @phantom18x
      @phantom18x 3 года назад +5

      If you want your files back, you need to take this 1 million dollars...or else...

    • @kc-me6wl
      @kc-me6wl 3 года назад

      @@phantom18x lool

  • @bhagyalakshmi1053
    @bhagyalakshmi1053 Год назад

    Word neber 12,&15&abtrnamer

  • @bhagyalakshmi1053
    @bhagyalakshmi1053 Год назад

    Laptop 21 time for you skills collection of the two letters again again to repeating coming computer using and typing per versus there are available for laptop work is eg.

  • @ce5248
    @ce5248 3 года назад +1

    no

  • @kadensharpin2156
    @kadensharpin2156 3 года назад +1

    docm-alware