r0B's Look Closer

Author:
r0B

Language:
Assembler

Upload:
2020-11-22 13:16

Download

Platform:
Windows

Difficulty:
2.5

Quality:
5.3

Arch:
x86

Downloads:
10

Writeups:
3

Comments:
11

Description

I hope you have fun figuring out the logic in this crackme. At first it might seem broken, but don't give up, you're near the end! -= no patching =- #Bonus points if you make a keygen!

Comments (11)
Writeups (3)

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jeffli6789 on 2020-12-05 16:07: This one is interesting! It uses a small and novel obfuscation trick to confuse the reverser.

korsader on 2020-12-11 09:31: Thank, you it was fun.

H2o on 2020-12-15 19:36: Interesting stuff! Thank you

md5inj on 2020-12-26 15:43: Thank you. Very interesting crackme. After day of debugging i thought "Finally i'm free", but after running the solution with "right" key i was very angry)))

Luc@s on 2020-12-26 23:18: [Click to reveal]

korsader on 2020-12-27 09:37: # python.org ml=input('input email address: ') if len(ml)4 print('%X'%b,end='') c=(ord(m)^x[i])&0x0F if c9: c+=0x47-9 else: c+=0x47 print(chr(c)) i+=1 input('press any key to exit')

korsader on 2020-12-27 09:39: обрезал код сука

bus@cu on 2021-01-09 23:12: I made a registry error I put EAX in place of the EBX registry (lines 108 to 110) in my solution. Thank you for replacing it with this one : and ebx,15 add bl,71 mov byte ptr[szSr+7],bl

ReiVanBjair on 2021-03-10 16:07: I am curious how this happens in OllyDbg. The EIP clearly pushes the "Thank you for supporting" message yet the message still appears as "Invalid license key". How is this trick done?

pranav on 2021-04-30 16:31: that was clever! Especially that you modifying an inbuilt function that causes 'abnormal' behavior! How did you even do that?

kekstraback on 2022-08-07 20:06: This was a fun crackme to solve! Thanks :)

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Solution by CahbUA on 2020-12-11 20:53:
This is my first submission, and to tell the truth, i'm not aware how this should look like, or what else apart from TXT desc i should include, but still - i'll give it a try! P.S. had lots of fun with this - very first - crackme.

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Solution by bus@cu on 2021-01-07 23:15:
Thanks

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Solution by pranav on 2021-05-01 03:35:
Fantastic crackme, no doubt! I was finally happy to solve a good crackme after a long time!

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crackmes.one

crackmes.one

r0B's Look Closer