Piñata Vision barcode/Pest cards
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Revision as of 14:05, 21 January 2011 by FeralKitty (talk | contribs) (Correct species IDs for molepest and wolfpest)
Species IDs for the sour (pest) cards come from the species ID table.
Based on known obfuscation set progression, valid generated sour cards would likely use the same obfuscation as a card 2 IDs distant from them. So the preferred bit to flip is ID bit 1.
| ID | Binary | Species | Flip 6 | Flip 5 | Flip 4 | Flip 3 | Flip 2 | Flip 1 | Flip 0 |
|---|---|---|---|---|---|---|---|---|---|
| 64 | 01000000 | zz1lemmingpest | -- | 96 | 80 | 72 | 68 | 66 | 65 |
| 102 | 01100110 | zz3rhinopest | 38 | 70 | 118 | 110 | 98 | 100 | 103 |
| 107 | 01101011 | zz3skunkpest | 43 | 75 | 123 | 99 | 111 | 105 | 106 |
| 110 | 01101110 | zz2scorpionpest | 46 | 78 | 126 | 102 | 106 | 108 | 111 |
| 127 | 01111111 | batpest | 63 | 95 | 101 | 119 | 123 | 125 | 126 |
| 146 | 10010010 | crowpest | -- | -- | 130 | 154 | 150 | 144 | 147 |
| 147 | 10010011 | raccoonpest | -- | -- | 131 | 155 | 151 | 145 | 146 |
| 148 | 10010100 | crocodilepest | -- | -- | 132 | 156 | 144 | 150 | 149 |
| 150 | 10010110 | molepest | -- | -- | |||||
| 155 | 10011011 | wolfpest | -- | -- | |||||
| 156 | 10011100 | mandrillpest | -- | -- | 140 | 148 | 152 | 158 | 159 |
| 160 | 10100000 | snailpest | -- | 128 | -- | -- | -- | -- | -- |
Possible species cards that can be bit-flipped
RedFlutterscotchPV 100 A24CFBF76904CC69 ID = 000001100100 100 36071C4914090957B7DC 0 BD41FBA96DE60E03 ID = 000001100100 100 o -100 8442376A1408CA0D33DE 0 F946985B275F9581 ID = 000001101100 108 o -108 SwananaPV 119 A3637416E50A4542 ID = 000001110111 119
To flip obfuscation set 9 ID bit 1
Bitmask to flip ID bit 1 is 0000310005400000. We determine this by finding a pair of identical-type cards (that only differ by ID bit 1), which also share the same obfuscation as the card to be bit-flipped. We compare what actual bits change between the two cards, ...
BuzzlegumLifeSweet-P 0 964ED4F3FC442C29 ID = 011010001100 1676 o -1676
TafflyLifeSweet-PV 0 964EE5F3F9042C29 ID = 011010001110 1678 o -1678
egrep "(Buzzlegum|Taffly)-TroubleInParadise-LifeSweet" barcodes.txt | ./barcodetxt2bitdiff.pl --short | ./bit_diff.pl --nomatch
444222
Description VPID Barcode 540642
---------------------------------------------------
BuzzlegumLifeSweet-P 0 964ED4F3FC442C29 010101 0x0000 0b0000000000000000
TafflyLifeSweet-PV 0 964EE5F3F9042C29 101010 0x0000 0b0000000000000000
Red Flutterscotch -> Sour Limeoceros
... and then flip the same bits in our likely-obfuscated (Red Flutterscotch) card, to change its ID by 2 to the rhinopest ID.
0000310005400000 XOR bitmask A24CFBF76904CC69 Red Flutterscotch (ID 100) A24CCAF76C44CC69 Sour Limeoceros (ID 102)
The card scans, and we've discovered a generated Sour Limeoceros card.
