How to De-Compile An Exsisting Jar

Discussion in 'Resources' started by Kodfod, Jul 16, 2012.

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  1. Offline

    Kodfod

    PLEASE NOTE:
    THIS IS FOR EDUCATIONAL PURPOSES ONLY I AM NOT IN ANYWAY RESPONSIBLE FOR HOW OTHERS MAY USE THIS KNOWLEDGE

    So Why am I going to tell you guys?
    I have run into the problem of needing to go back to an earlier version of a plugin to grab a piece of code. So what is a way to get back older versions? De-compile.

    Personally, I use JD-GUI To Download Use This

    Now, just place it somewhere on your desktop. Get A Jar File, and drag and drop it ontop of the .exe.

    This will open the program and have your source at your finger tips!

    Remember, i am not responsible for how others use the knowledge.

    As This Person stated Below:
    Keep this in mind and Please be respectful of others.

    Hope This Helped!
     
    Icyene, russjr08 and bobacadodl like this.
  2. Offline

    McLuke500

    Kodfod
    I use JD-GUI as well, it is useful.

    You should add screenshots that are cropped showing how to use it.
     
  3. Offline

    Fiddy_percent

    Wow this this is GREAT im new to making plugins so having this lets me learn alot quicker (no I wont use it to still peoples plugins) but thanks for posting this
     
  4. Offline

    Icyene

    McLuke500 No offense to the developers who will use JD-GUI (I use it also), if they can't figure out how to use it, then they shouldn't be developing. Its as simple as File > Open.
     
  5. Offline

    McLuke500

    Yeah I suppose but most resource threads have like code quotes and pictures to make them look nice and this is just text.
     
  6. Offline

    Icyene

    True, but its such a deliciously simple program. Including images would be like spoon-feeding a 23-year old man.
     
    Kodfod likes this.
  7. Offline

    firecombat4

    Thanks man, makes it so much easyer to learn plugin developing!
     
  8. Offline

    BMX_ATVMAN14

  9. Offline

    Icyene

    @BMX_ATCMAN14 I have AVG and Avast, never got that...
     
  10. Offline

    chaseoes Retired Staff

    It's fun to decompile your own plugins.
     
    Doggyroc likes this.
  11. Offline

    Icyene

    chaseoes Yes, its fun to see that Eclipse swaps String adding with StringBuilder.append(). Glad to see its making minor optimizations for me.
     
  12. Offline

    Kodfod


    I never got that, Here is the virus total

    2 out of 41 (4.8787%) Say it's a virus

    Here is Vipre:

    [​IMG]
     
  13. Offline

    p000ison

    Its not eclipse which does this :p Every compiler does this :p
     
  14. Offline

    desht

  15. Offline

    Icyene

    Well played.
     
  16. Offline

    edocsyl

    Cool tool :)
     
  17. Offline

    Jacob Marshall

    I just use Jad in command line, however I really dont like it when this sort of useful information is so easily usable for people that wish to use it maliciously.
     
  18. Offline

    zecheesy

    its in french!!!!
     
  19. Offline

    Kodfod

    lol wut?
     
  20. Offline

    zecheesy

  21. Offline

    Kodfod

  22. Offline

    zecheesy

    Hey, I have netbeens :B
    Where is the jre? :eek:
     
  23. Offline

    Kodfod

  24. Offline

    Milkywayz

    Especially stuff done in a non-secure way such as opening a url which puts data into a database based on $_GET, if someone got that url (Easily with jd-gui) then it's SQL injection heaven... Fortunately most people who realize that can be exploited know they send data in a more secure way.
     
  25. Offline

    Jacob Marshall

    Is all about security for me, if it takes an extra 300ms to handle, it's worth it.
     
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