Elvis's Protected

Author:
Elvis

Language:
(Visual) Basic

Upload:
2021-07-21 08:26

Download

Platform:
Windows

Difficulty:
3.5

Quality:
4.0

Arch:
x86

Downloads:
239

Size:
54.62 KB

Writeups:
1

Comments:
9

Description

My old challenge from matesctf 2019. Challenge description: My friend made a protector and it's very strong. Can you crack it?

Labels ?

Anti-debugging IsDebuggerPresent Self-debug / block debugger Parent-process check Anti-attach / thread suspension String / data encryption XOR Self-modifying / runtime decrypt Code virtualization / VM

Comments (9)
Writeups (1)

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puelo on 2021-08-22 20:53: [Click to reveal]

Elvis on 2021-08-23 01:50: Congratulation puelo :)

xmaple555 on 2021-09-16 15:55: post a comment to record I have solved this crackme. btw, the final letter of key involves too much calculation process. I think it is too much.

Elvis on 2021-09-17 13:31: @xmaple555: I remember I just change a bit in last letter check. You can calculate it easy with script :)

rippy on 2021-09-17 15:25: https://imgur.com/a/PirRBjt so easy

PastorJimColerick on 2021-09-17 19:36: @rippy plus you also didnt get the credit screen and it still says wrong key

Elvis on 2021-09-25 09:14: @PastorJimColerick: Just ignore him. It's not worthy. BTW seem that you also solve this crackme. Congrats :)

nassimorg09 on 2021-12-15 23:09: I have solved the debugger detection but I didn't get the flag I need some help around here

Elvis on 2021-12-16 07:24: @nassimorg09:Good to see you have bypassed some anti debug tricks. You're still in the begin at solving this but good move. You might want to dig to how does crackme actually work. Hope someone can share there solution so other people can learn from it.

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Solution by misra.cxx on 2023-01-27 19:21:
a very lengthy solution XD

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crackmes.one

crackmes.one

Elvis's Protected