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Datastorm 2013 Invitation [2012] |
Website :
http://www.datastorm.party/
Released At :
X'2012
Credits :
SIDs used in this release :
Contains information on the following event(s) :
Download :
Look for downloads on external sites:
Pokefinder.org
Hidden Parts Info
Submitted by lft on 7 November 2012
| My approach was to first disassemble the code and look for accesses to the keyboard and/or large unused blocks of data. Having figured out how the decryption worked, I calculated backwards from the three verification bytes, and figured out what 12 of the bits in the key must be (at the point where the first verification byte is emitted). This reduced the number of possible keys from 4 billion to 1 million. I wrote a PC tool to unencrypt the data from the invitro with all of those keys and report which one produced the most alphabetic screen codes, and this was the correct one. Now I had the plaintext, but I also ran the decryption algorithm backwards a few steps to arrive at the original keyboard matrix data that would produce the correct key. |
Hidden Parts Info
Submitted by CRT on 7 November 2012
I did the Censor cracking, no help or hints from anyone but I started late and it took some hours to understand the code as I didn't know what kind of hidden part to look for at first. I spent the first hours in the real hardware before going crossdev. Don't want to post any spoilers here yet, people might still want the challenge. But I took a similar approach to Trasher.
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Hidden Parts Info
Submitted by Trasher on 7 November 2012
Kool invite and especially fun to crack the hidden part! Glad I could run my brute-force-attack in a emu with warp mode.. Would have been still waiting if I only had the original hardware.
There is a key-combo that works in an emu too, but you need to know the seed created on a real c64 (or by brute-force as I did) to be able to calculate it!
You also need to twist your fingers in ways you thought was not possible.
I might just release the brute-force code here somehow, if someone is interested and if it is ok for Magervalp at this time?
Btw. how did lft handle it, no info here at that time. I imagine Censor might have had some help from here, or?! |
Hidden Parts Info
Submitted by MagerValp on 5 November 2012
Five extra tickets were hidden in the invitation, accessible after the normal registration filled up.
Hint:
Gur frperg cntr vf "rapelcgrq" ol kbe:vat vg jvgu ovgf 8-15 bs n 32-ovg tnybvf ysfe hfvat gur cbylabzvny $04P11QO7 (frr pbqronfr64). Gur ysfe vf frrqrq jvgu gur xrlobneq zngevk (gur gjb 32-ovg unyirf ner NAQ:rq), gura eha sbe 29 olgrf, naq gura gur frdhrapr $n7, $53, $n6 vf irevsvrq.
Mega-spoiler:
Hfr n erny P64 naq ubyq qbja Q, F, gjb, mreb, bar, naq guerr xrlf ng gur fnzr gvzr gb npprff gur uvqqra cneg. Qbrf abg jbex ba IVPR, naq vg'f hayvxryl gung vg jbexf ba bgure rzhyngbef qhr gb ubj xrl tubfgvat jbexf. |
Hidden Parts Info
Submitted by MagerValp on 2 November 2012
Hidden Parts Info
Submitted by MagerValp on 1 November 2012
| Real hardware required for the *full* experience. |
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