downloadbrowseThunder_cls's NCrackme v0.1

Download, 47 kb (password:
Browse contents of

This is a very easy crackme I made for REtosCLS initiative, it is coded in C#, all you gotta do is to find a valid registration code, no patching as a valid solution (it wouldn't be funny at all), feel free to use the tools you like.
" are gonna have a quick review on your algebra skills for the final test ;)"

You are gonna need .Net Framework v3.5 installed to run this
Good luck! and Happy Cracking to All!!

Difficulty: 1 - Very easy, for newbies
Platform: Windows
Language: .NET

Published: 10. Dec, 2015
Downloads: 554


Waiting for at least 3 votes
(we have only 2).

Rate this crackme:

Send a message to Thunder_cls »

View profile of Thunder_cls »


Solution by apuromafo, published 09. feb, 2016; download (321 kb), password: or browse.

apuromafo has rated this crackme as quite nice.

Solution by klefz, published 09. feb, 2016; download (2 kb), password: or browse.

klefz has not rated this crackme yet.

Solution by acruel, published 09. feb, 2016; download (1 kb), password: or browse.

acruel has not rated this crackme yet.

The submission of solutions is closed.

Discussion and comments

12. Dec 2015
i love maths :)
14. Dec 2015

Then the BB and CC must be solved....
15. Dec 2015
Correct serial for this day:

15. Dec 2015
Nice well done, the bruteforce takes all the fun out of the challenge, though
16. Dec 2015
I hate maths so the brute is the clever way for me.
29. Dec 2015
I can't debug this with ollydbg, why?
08. Jan, 03:29
nice @givses, Acruel, im was solved using math, and posterior used the web$(x~2-13x_40)=0/

now was writed a little solution for my friend.

by other side i was coded a keygen only to show there is posible to solve i was writed in delphi 7 se, a maybe have many spelling error (autor->author, some ecuation maybe was little error 14->13 ), but in fact the learning process was great

Best Regards Apuromafo
Pd:my native write is in spanish, im bad english writer, but not wana lost this little Crackme with nice Gui :)
09. Jan, 03:08
You can't use ollydbg with this one due this is .NET binary, you should use Reflector/dnSpy/etc instead.
26. Mar, 12:41
TC2N - 1605 - 2608 - RTCR

serial for this day. thanks for crackME.
08. May, 13:23

Was fun doing some maths! :-)
30. Aug, 17:18
string regKey = string.Format("TC2N-{0}05-{1}08-RTCR", DateTime.Now.Year.ToString().Substring(2, 2), (DateTime.Now.Day.ToString("00")));

My first crackme :D

You may leave your comment, thoughts and discuss this crackme with other reversers here.
Acting childish will not be tolerated.
HTML and such will be left as-is, so don't try.