Author:
Tester009

Language:
Assembler

Upload:
12:10 PM 07/07/2020

Download

Platform
Windows

Difficulty:
5.0

Quality:
4.0

Arch:
x86

Description

Tester009 Keygenme #2. Keygenme template by Ziggy. Here's my second keygenme. Again, there are some math related calculations included. I also included a difficulty setting ranging from 0-9. Don't let the huge space of input boxes scare you, it'll remain unused for the most part. You're allowed to ZERO OUT up to six bytes, no further patching allowed. Find the correct combinations of serials and give us a nice write-up how you found the right combinations. Please do not post serial 0 in plain text, but give the MD5 hash: https://md5calc.com/hash/md5 Correct SHA256 hash of serial 0: b4e854994a14b00e83c750e09fe3e98d0d56b54479c7e3250a35e74dd89a0768 A keygen would be a nice bonus but may be very time consuming to make and to run without precalculated values. It's not recommended to run this keygenme outside a safe environment such as a VM. Let me know if you run into anything unexpected, because there's some experimental stuff in there that may not work as intended. https://www.virustotal.com/gui/file/3683173a06b9a8d97fef8ac9cbf6812514b8f133cd4540ec1a3d9fdb26984c4f/detection

• Comments
• Solutions

Tester009 on 7:47 AM 08/15/2020: Only tested on Win10 x64 - I got reports the crackme fails to open on Win7 altogether.

ToMKoL on 2:27 PM 04/26/2021: On Win 7 crashes after going into check procedure. In initdlg procedure KiUserExceptionDispatcher is being repleaced by crackme own routine. Then there is exception generated in check routine and we crash in new KiUserExceptionDispatcher. When will finally switch to Win 10 will give it another try. For now I'll leave it to others to discover all other crackme secrets.

Tester009 on 9:40 PM 04/26/2021: Sure, no problem.

ToMKoL on 3:57 PM 05/15/2021: Crashes on Win 10 x64 20H2. Please specify correct version of windows that is capable of running crackme.

Tester009 on 8:04 PM 05/20/2021: There's a hook on the KiUserExceptionDispatcher which may make debugging a headache. Change the following 6 bytes into 0x00 to get rid of this hook and the random crashes it may cause: 0x401097, 0x4014B3, 0x40183C, 0x4019D9, 0x401F52, 0x401FE9 (all part of calls / jumps). I can enter all serials and get the right message in time before the keygenme crashes so I don't consider this as an invalidation of the keygenme.

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