Matthew Malcomson hardenedapple
hardenedapple
/ Puzzle.bin
Created
April 24, 2017 17:00
Puzzle -- find the password that the binary accepts
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| 00000000: 7f45 4c46 0201 0100 0000 0000 0000 0000 .ELF............ | |
| 00000010: 0200 3e00 0100 0000 5004 4000 0000 0000 ..>.....P.@..... | |
| 00000020: 4000 0000 0000 0000 b819 0000 0000 0000 @............... | |
| 00000030: 0000 0000 4000 3800 0900 4000 1e00 1d00 ....@.8...@..... | |
| 00000040: 0600 0000 0500 0000 4000 0000 0000 0000 ........@....... | |
| 00000050: 4000 4000 0000 0000 4000 4000 0000 0000 @.@.....@.@..... | |
| 00000060: f801 0000 0000 0000 f801 0000 0000 0000 ................ | |
| 00000070: 0800 0000 0000 0000 0300 0000 0400 0000 ................ | |
| 00000080: 3802 0000 0000 0000 3802 4000 0000 0000 8.......8.@..... | |
| 00000090: 3802 4000 0000 0000 1c00 0000 0000 0000 8.@............. |
hardenedapple
/ Puzzle.bin
Last active
October 31, 2017 18:30
Below is a hex dump of the challenge binary. The challenge is ... this binary contains a password ... find it.
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| 7f454c4601010100e9e40000000000000200030001000000638104083b00 | |
| 00005b000000000000003400200001002800030002000000000000000001 | |
| 0000000000000000800408e9a50008000400000004000005000000001000 | |
| 000000000000000000000000000000000000000000000000000000000000 | |
| 000000000000000000000001000000010000000200000063810408630100 | |
| 009d02000000000000000000001000000000000000070000000300000000 | |
| 00000000000000d30000001b000000000000000000000001000000000000 | |
| 00002e74657874002e7368737472746162002e7370656369616c220000b8 | |
| c0078ed8a00300b40ecd10a02b01b40ecd10a03c01b40ecd10a07d012c1f | |
| b40ecd10ebfe004d6167696320776f7264732063616e206265206f627475 |
hardenedapple
/ count-change.scm
Last active
March 14, 2017 18:52
count-change constant time constant space
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| ;; COUNT-CHANGE challenge (throwaway comment in SICP along the lines of coming | |
| ;; up with a better solution is left as a challenge to the reader). | |
| ;; Find a better way of calculating the following. | |
| ;; I don't think this challenge allows memoization. | |
| (define (first-denomination kinds-of-coins) | |
| (cond ((= kinds-of-coins 1) 1) | |
| ((= kinds-of-coins 2) 5) | |
| ((= kinds-of-coins 3) 10) | |
| ((= kinds-of-coins 4) 25) | |
| ((= kinds-of-coins 5) 50))) |
hardenedapple
/ Flutter_histograms.ipynb
Last active
August 29, 2015 14:21
Flutter histograms outline
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