Challenge #15 - Dedicated to BDV
#1
Posted 02 September 2011 - 11:28 PM
I hope you enjoy solving it.
http://michael-zoell...description.pdf
http://michael-zoell...enge15image.png
You can also download it here plus you have the possibility to check your solution.
Many Greetings
MichaelZ
P.S. I don't know how to operate the new forum software. I wasn't able to attach those two files. I hope you have no problem to download them using the links.
#2
Posted 03 September 2011 - 12:47 PM
Which refers to:
This site might be handy:
I am currently stuck at that point.
#3
Posted 03 September 2011 - 12:52 PM
That's what I was hopingI am currently stuck at that point.
BTW, what you found is hidden twice...
Many Greetings
MichaelZ
#4
Posted 03 September 2011 - 01:36 PM
http://www.simonsing...ere_cipher.html
http://www.simonsing...e_cracking.html
Wonko
#5
Posted 07 September 2011 - 03:00 PM
Replacing "1523 1596" with the appropriate cipher alphabeth:
ABCDEFGHIJ 0123456789I get "BFCDBFJG" as key.
The "decrypted" message, doesn't make much sense:
LOTNSGVHOFURINOOZASJWHU
P.S.: I just noticed that the hidden text is not easily retrievable in Acrobat Reader. Evince PDF reader, allowed me to select the text behind the black box. LibreOffice (and probably OpenOffice.org) can open the PDF and allow you to move the black box too so you can see the text.
#6
Posted 07 September 2011 - 03:18 PM
Hi Icecube,I get "BFCDBFJG" as key.
The "decrypted" message, doesn't make much sense
it doesn't make much sense because it is not the message... (because it is not the correct key...)
Many Greetings
MichaelZ
#7
Posted 07 September 2011 - 03:35 PM
#8
Posted 07 September 2011 - 03:52 PM
I get "BFCDBFJG" as key.
The "decrypted" message, doesn't make much sense:LOTNSGVHOFURINOOZASJWHU
But it could be a fine sample of Vogon poetry.
http://en.wikipedia....ki/Vogon#Poetry
In my crystal ball I saw ALTJTHTO
The decoded message doesn't make ANY sense either.
MICHAELZPZDLQLEGAUBDEFK
Unless first part is the name of someone and second part is the censored adjectives quite a few people are throwing at him/her.
Wonko
#9
Posted 07 September 2011 - 03:56 PM
No it's not on purpose. I didn't even notice before. I can asure that the key is not in the graphic.I noticed before that the F and R in the image are a bit highlighted. But I am not sure if it is on purpose or not.
Many Greetings
MichaelZ
#10
Posted 07 September 2011 - 04:00 PM
Hej, I don't want to be thrown at[...] quite a few people are throwing at him/her.
Many Greetings
MichaelZ
#11
Posted 07 September 2011 - 04:08 PM
Well, then maybe it is time to do what you promised:Hej, I don't want to be thrown at
I have no idea if this challenge is too easy or too difficult. Please let me know when I
shall give some hint.
And be a little bit less §@ç#ing optimist!
But similar challenges were solved that fast so that I’m quite
optimistic that it is doable.
Wonko
#12
Posted 07 September 2011 - 04:12 PM
Another hint: Hey, we are IT people, aren't we? Probably IT knowledge required?I can asure that the key is not in the graphic.
Many Greetings
MichaelZ
#13
Posted 07 September 2011 - 04:14 PM
#14
Posted 07 September 2011 - 04:17 PM
The length of the text and key were selected in such a way that I think a brute force is impossible/not very likely to succed. As I mentioned before, it knowlege is required...Of course it is doable it the key is not to long (brute force ), but that shouldn't be the purpose of the challenge, I hope.
Many Greetings
MichaelZ
#15
Posted 07 September 2011 - 04:48 PM
And be a little bit less §@ç#ing optimist
Hi Wonko,
in the past I was always impressed by your knowledge of the English language. But now...
I think §@ç#ing optimist is correctly spelled φϋ¢к¥йг optimist
Many Greetings
MichaelZ
#16
Posted 07 September 2011 - 07:10 PM
I think §@ç#ing optimist is correctly spelled φϋ¢к¥йг optimist
It depends on the dialect, your spelling seems rusglish, a pure L337 would be PhU(|<1|\|9 or /=|_|(|<!/V6 or fux!n9, I am pretty sure that down under they use something like ɟnɔʞıuƃ , I think there is not one "recommended".
Wonko
#17
Posted 07 September 2011 - 08:59 PM
I think there is not one "recommended".
I like the down under!
#18
Posted 07 September 2011 - 09:10 PM
Is it visible in the PDF as plain text or in the hexdump of the PDF as plain text?I can asure that the key is not in the graphic.
#19
Posted 08 September 2011 - 07:12 AM
I like HxD very much (although I also like Tiny Hexer for which I haveIs it visible in the PDF as plain text or in the hexdump of the PDF as plain text?
Many Greetings
MichaelZ
#20
Posted 08 September 2011 - 09:19 PM
I get a result of "Duplicate entry '0' for key 1"
#21
Posted 09 September 2011 - 12:16 AM
Congratulations windy!! What I can see that your answer is absolutely correct.Is one meant to put "THE********IS**********" or just the password into the checker?
I get a result of "Duplicate entry '0' for key 1"
#22
Posted 09 September 2011 - 03:02 AM
Can you please try again & let us know?
#23
Posted 09 September 2011 - 05:09 AM
windy, also many congratulations from me!Is one meant to put "THE********IS**********" or just the password into the checker?
Many Greetings
MichaelZ
#24
Posted 09 September 2011 - 08:37 AM
The checker is working now, thankyou.
I've only just started looking at these challenges and I am finding them an entertaining diversion.I've done 13 but still stuck on 14
#25
Posted 09 September 2011 - 08:43 AM
Good to listen that you are enjoying the challenges. Thanks to my Team Reboot companions & forum members.@Sherlock
The checker is working now, thankyou.
I've only just started looking at these challenges and I am finding them an entertaining diversion.I've done 13 but still stuck on 14
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