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12:19 PM 03/27/2023
Description
Welcome to my new Crackme/keygenme!
RULES:
1 - crack it! of course! (easy i think!)
2 - find the algoritm and write a keygen! (not so much hard imho :D)
3 - explain your solution!
hacktooth.
Roboticol on 4:29 AM 03/30/2023: Hello, I'm new to RE and I was checking this code with x64dbg (don't know if its the correct program to use lmao) and I tried to patch it but for some reason it gave an abort message. I also figured out that this is written in Object Pascal while searching. But, I still couldn't find a method to patch this app, any tips?
Slax38 on 6:44 PM 03/30/2023: Recommendation: Search string references for the error message.
natitati on 7:05 PM 03/30/2023: Roboticol^^
Download 010 editor, and search for the hex bytes in the area of where you want to patch the code until you only find one occurance. And patch there.
That's how I do it most of the time, and how I did it here.
RedXen on 12:00 PM 03/31/2023: Patched: https://pastebin.com/tc3x9Mmg
hacktooth on 7:26 PM 03/31/2023: now try to write a keygen ! :D
plasmagrass on 12:44 AM 04/05/2023: I'm not sure if this is a spoiler or not, but there's a trivial name/key combination that don't need much thinking.
hacktooth on 9:15 PM 04/05/2023: @plasmagrass no trivial sorry, the key is generated by the username, is not hard to write a keygen, but not so easy :D
timotei_ on 3:34 PM 04/14/2023: Nice crackme for beginners. No need for patching here. A serial can be sniffed and the algo is good to follow. I would rate this as level 1-2. Thanks.
MARI0x83 on 10:48 AM 04/20/2023: https://imgur.com/a/SMcdUas I searched up "wrong!!" for string reference calls and from there i changed 000000010002B003 to jmp crackme by hacktooth v2.10002B005 then i patched the file saved it as ggg.exe and thats it I did not manage to write a keygen though.
byclone on 9:42 PM 04/23/2023: UserName : ByClone
Key : HqGbdbX
hacktooth on 11:43 AM 04/24/2023: @byclone nice! you probably found the algorithm, now its time to write a keygen! :D
byclone on 9:47 PM 04/24/2023: Self Keygen :)
https://www.upload.ee/files/15164303/crackme_by_hacktooth_v2_-_self_keygen.exe.html
hacktooth on 10:26 PM 04/24/2023: @byclone, good but 3rd rule is write a keygen... :D
hacktooth on 12:13 PM 07/07/2023: congratulation to timotei, he made a keygen in pure asm
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