hacktooth's CrackMe/keygenMe by hacktooth v2

Author:
hacktooth

Language:
Unspecified/other

Upload:
2023-03-27 12:19

Download

Platform:
Windows

Difficulty:
3.3

Quality:
4.0

Arch:
x86-64

Downloads:
18

Size:
857.69 KB

Writeups:
0

Comments:
14

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.

Comments (14)
Writeups (0)

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Roboticol on 2023-03-30 04:29: 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 2023-03-30 18:44: Recommendation: Search string references for the error message.

natitati on 2023-03-30 19:05: 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 2023-03-31 12:00: Patched: https://pastebin.com/tc3x9Mmg

hacktooth on 2023-03-31 19:26: now try to write a keygen ! :D

plasmagrass on 2023-04-05 00:44: 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 2023-04-05 21:15: @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 2023-04-14 15:34: 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 2023-04-20 10:48: 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 2023-04-23 21:42: UserName : ByClone Key : HqGbdbX

hacktooth on 2023-04-24 11:43: @byclone nice! you probably found the algorithm, now its time to write a keygen! :D

byclone on 2023-04-24 21:47: Self Keygen :) https://www.upload.ee/files/15164303/crackme_by_hacktooth_v2_-_self_keygen.exe.html

hacktooth on 2023-04-24 22:26: @byclone, good but 3rd rule is write a keygen... :D

hacktooth on 2023-07-07 12:13: congratulation to timotei, he made a keygen in pure asm

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hacktooth's CrackMe/keygenMe by hacktooth v2