auscompgeek

#!/usr/bin/env python3

import binascii
import enum
import typing


class Mode(enum.IntEnum):
    RAIL = 0
    FERRY = 1

auscompgeek

Keybase proof

I hereby claim:

• I am auscompgeek on github.
• I am auscompgeek (https://keybase.io/auscompgeek) on keybase.
• I have a public key ASAl9lrYfmjshIR18YSkAOi3xRAdZR43EU4as9IsAvDZmwo

To claim this, I am signing this object:

auscompgeek

#!/usr/bin/env python3

import hashlib
import sys

f = open(sys.argv[1], 'rb')

ce_version = f.read(4)
assert ce_version == b'CE01'

auscompgeek

#!/usr/bin/env python3
"""
Utility to change settings on the OpenMesh OM5P-AN and OM5P-AC running FRC OpenWrt.

One can flash the radio firmware using ap51-flash <https://github.com/ap51-flash/ap51-flash>.
This is also what the official utility uses to flash the radio firmware.

You'll need to download the official utility to grab a copy of the firmware.
"""

auscompgeek

pkgbase = indicator-kdeconnect
	pkgdesc = Integrate KDEConnect on desktop environments that use AppIndicators (e.g. Unity)
	pkgver = 0.9.1
	pkgrel = 1
	epoch = 1
	url = https://github.com/bajoja/indicator-kdeconnect
	arch = any
	license = GPL
	makedepends = cmake
	depends = libappindicator-gtk3

auscompgeek

Python: Abstract Syntax Treat

Writeup by @auscompgeek.

Disclaimer: I did not participate in CySCA 2017. I simply saw this challenge (and a number of people struggling over it) and found it interesting. As such, I do not have the full description of the challenge.

Competitors were provided with a file tree.py. I have attached it for prosperity.

Before attempting to solve this challenge, it should be noted (from the shebang line) that this is a Python 2 program.

auscompgeek

#!/usr/bin/env python3

digits = '0123456789'
decrement_map = dict(zip(digits[1:], digits))


def solve(N: str):
    m = N[0]
    for i, x in enumerate(N):
        if m <= x:

auscompgeek

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auscompgeek

Opal

Opal is the public transport smartcard ticketing system in Sydney, Australia.

Opal cards are MIFARE DESFire EV1 cards, with the application ID 0x314553. All files are restricted except for file 7, which is freely readable.

The [official Android app][Opal Travel] can interpret this free read data. Much of the information here was derived by reverse engineering this app.

auscompgeek

[core]
	# git default is 7
	# kernel devs like 12
	abbrev = 10

[alias]
	lg = log --graph --pretty=format:'%C(auto)%h%d %s %Cgreen(%cr) %C(bold blue)<%an>%Creset'

	id = rev-parse --verify HEAD