r0B's SanSuu

Author:
r0B

Language:
C/C++

Upload:
2021-04-05 14:33

Download

Platform:
Windows

Difficulty:
3.3

Quality:
4.7

Arch:
x86

Downloads:
20

Size:
10.00 KB

Writeups:
3

Comments:
13

Description

You know the drill, get the good boy message. no patching, just a valid serial number and/or keygen. feel free to post your valid serials in the comments ;)

Comments (13)
Writeups (3)

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4epuxa on 2021-04-06 11:38: [Click to reveal]

4epuxa on 2021-04-07 12:01: Also n2717

r0B on 2021-04-07 13:39: nice work 4epuxa, you're fast!

rDFDyYI on 2021-04-07 14:56: good crackme, uploaded a solution, also get serial numbers abcdifg and abcdefc (based on abcdefg), there is explained calculations in solution

r0B on 2021-04-09 14:31: thanks rDFDyYI for the very thorough write up! I can say that you have completely understood the crackme/algorithm ;)

9heartache9 on 2021-04-12 08:57: Here's a simple keygen I wrote. It copies the serial to your clipboard so you can paste. https://cdn.discordapp.com/attachments/687103642377125907/831090391574642688/Keygen_for_sansuu.zip

synthesize on 2021-04-13 04:23: why does lResult & 1 have to be true and why does lResult have to be between 5 and 11? what does lResult hold?

Mick@ on 2021-04-15 15:13: Even & Odd.;) Some valid serials:1010101,)()()(),a0a0a0a,5454545 ... You have to choose 7 chars. For every couple: the first char have to have his LSB set only, the second not set.Use ascii to binary docs,and test: '1' AND '0'...

MrNatas on 2021-04-16 14:55: Awesome crackme! It took me a few days on and off to figure out because I am a beginner but I learned a lot about bitwise operations. The key I came up with was c8e&4

pranav on 2021-05-29 16:09: finally cracked this crackme. Pretty good algorithm you got there. The hardest part except the algorithm was to find the procedure(main).

puelo on 2021-06-30 22:30: Very nice crackme. I've got very lucky as my first guess "wfwfwfw" directly got accepted as valid :D. Here is one possible keygen: https://pastebin.com/Shu0cUrM

Raghu on 2021-10-28 20:08: [Click to reveal]

ten-ten on 2021-11-30 17:15: I gotten a0a0a0a too while trying to break the bitwise and (v1 & 1) != 0. Overall a fun reversing key gen challenge.

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Solution by rDFDyYI on 2021-04-07 14:52:
there is no keygen in my solution, but there is a little explanation and 2 manually-calculated valid serial numbers

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Solution by Aodrulez on 2021-05-21 21:31:
This was a fun challenge. Submitting keygen (in python) as solution.

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Solution by pranav on 2021-05-29 17:05:
Not comprehensive as usual, as there are other solutions available.

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crackmes.one

crackmes.one

r0B's SanSuu