hacker.org Forum Index
RegisterSearchFAQMemberlistUsergroupsLog in
Countdown Calc
Goto page 1, 2  Next
 
Reply to topic    hacker.org Forum Index » Challenges View previous topic
View next topic
Countdown Calc
Author Message
horst



Joined: 06 Mar 2009
Posts: 24
Location: Germany

Post Countdown Calc Reply with quote
Hi,

I'm pretty sure I got the answer. If I compare the first ~20 numbers with my results they match but my answer still seems to be incorrect: 24********24.
Any help would be appreciated Smile
Tue Apr 14, 2009 11:17 am View user's profile Send private message
Garfield



Joined: 29 Jun 2009
Posts: 3

Post Reply with quote
I've got exactly the same problem.

EDIT: Solved... nevermind.
Thu Jul 09, 2009 4:00 pm View user's profile Send private message
jonik555



Joined: 31 Aug 2009
Posts: 43
Location: Prague

Post Reply with quote
Hi, can You give alittle hint? Can this challenge be done just by mind or do I need to use OllyDBG or something like that?
Thank You very much...

_________________
There are 10 types of people, those who understand ternary, those who think that this joke is about binary and the others.
Fri Jun 18, 2010 5:59 pm View user's profile Send private message
smutley



Joined: 23 Nov 2009
Posts: 4

Post Reply with quote
There are several ways of solving this, so work out which one is easiest for you. You can work out the sequence of numbers, you can reverse app to see the code, or come up with another one yourself. Like many of the challenges here, there is no one way of solving it.

cheers
smutley
Sat Jun 19, 2010 2:54 pm View user's profile Send private message
laz0r



Joined: 04 Feb 2010
Posts: 290
Location: Within the depths of Unix

Post Reply with quote
I did it by mind and with Wolfram|Alpha (makes many of the challenges much easier!)

_________________
There is no spoon.
Sat Jun 19, 2010 8:56 pm View user's profile Send private message
ShadowWidow



Joined: 09 Nov 2010
Posts: 6
Location: Germany

Post Reply with quote
I am stuck.
I have decompiled the programm an just executed the last run.
The result , maybe the same as horst get, 24**...**24 is wrong.
Can somebady give me a little hint ?

Edit: I've got it.
Sat Dec 04, 2010 7:47 pm View user's profile Send private message
tripleedged



Joined: 16 Apr 2010
Posts: 10

Post Reply with quote
Hi,
I thought I had the correct formula to get it. But as it turned out, I forgot about a special feature about big numbers. I checked my calculation and noticed that my evaluation of the sequence isnt correct anyway.

It gives me the correct values up to 89 though. So I'm not sure, if stubborn Vista is going wild here?! I don't think that I spoil anything, if I ask if the value for 88 really is 34***76 instead of 33***71, which would perfectly fit in my sequence...

Thanks in advance,
tripleedged
Thu Mar 10, 2011 12:40 am View user's profile Send private message
uws8505



Joined: 23 Jan 2011
Posts: 32

Post Reply with quote
tripleedged wrote:
It gives me the correct values up to 89 though. So I'm not sure, if stubborn Vista is going wild here?! I don't think that I spoil anything, if I ask if the value for 88 really is 34***76 instead of 33***71, which would perfectly fit in my sequence...


The sequence has nothing to do with Vista.
Just one more step of thinking, and you're done; the sequence is not so simple, but not so complex either Wink
Thu Mar 10, 2011 6:42 pm View user's profile Send private message
rmlc14



Joined: 10 Feb 2011
Posts: 2

Post Reply with quote
hey guys, this challenge is driving me nuts for some days!

i compared the first like 50 numbers printed by the original sharper.exe with my calculation and they all match exactly. why isnt my answer accepted though?

its close to impossible my answer is wrong o.O any clue? thx

EDIT: OMG Smile the devil is in the details, had to slightly modify formula (even though the 50 first numbers were actually correct). thx anyways.
Sat Jun 04, 2011 9:38 am View user's profile Send private message
moose



Joined: 16 Jul 2010
Posts: 67

Post Reply with quote
Code:
$ wine Sharper.exe
wine: Install the Windows version of Mono to run .NET executables


Do I have to install Windows for this challenge?
Tue Jul 12, 2011 8:30 pm View user's profile Send private message
CodeX



Joined: 17 Oct 2008
Posts: 350

Post Reply with quote
it looks like you have to install the windows version of Mono on wine judging by that message
Tue Jul 12, 2011 9:03 pm View user's profile Send private message
gfoot



Joined: 05 Sep 2007
Posts: 269
Location: Brighton, UK

Post Reply with quote
Wine is mostly a Win32 API implementation, so you only need it for things that use the Win32 API. Pure CIL assemblies that don't use Win32 APIs can be executed through native Linux mono.
Wed Jul 13, 2011 11:45 pm View user's profile Send private message
tripleedged



Joined: 16 Apr 2010
Posts: 10

Post Reply with quote
After a deeper look, I managed to solve it by hand... I hoped for more challenges to the north-west, but seems I get stuck there once again, since the crypto was only solved 10 times...
Sat Jul 16, 2011 1:13 am View user's profile Send private message
AMindForeverVoyaging
Forum Admin


Joined: 28 May 2011
Posts: 493
Location: Germany

Post Reply with quote
Wait till you see how many people solved "What in the world"...
Sat Jul 16, 2011 1:39 am View user's profile Send private message
CodeX



Joined: 17 Oct 2008
Posts: 350

Post Reply with quote
even less people have completed a challenge called "a living dead cat in the box"...
Sat Jul 16, 2011 3:00 am View user's profile Send private message
Display posts from previous:    
Reply to topic    hacker.org Forum Index » Challenges All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to: 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group
Design by Freestyle XL / Flowers Online.