mtpfs-javantea


Jun 27, 2017

mtpfs-javantea-1.2 [sig]
Gentoo ebuild
Gentoo manifest
Github link

A simple patch for mtpfs to close a few bugs. The severity of these bugs is unknown so the priority of fixing them depends on your risk tolerance. The most certain of the bugs occurred once during an rsync and the drawback was that the user had to reboot their phone.

Read more »

Reverse Engineering Flash Games

3 comments


Dec 7, 2014
Unproprietary 0.4: Nov 25, 2015
Unproprietary 0.5: Sept 11, 2016

unproprietary-0.5 [sig]
unproprietary-0.4 [sig]
unproprietary-0.3 [sig]
unproprietary-0.2.1 [sig]
Git repository: git clone https://www.altsci.com/repo/unproprietary.git

Lume is a simple point and click Flash game available from Steam and Humble Bundle. I got it as part of of the Humble Weekly Sale: Amanita & Friends bundle and played it because I was interested in playing a short puzzle game one night. Since it's only 30 MB, it's pretty much guaranteed that it's a short game. It took an hour or so to complete and had some excellent puzzles. One of the main features of the game is the graphics which were made by a good artist with good style. Today, I was able to reverse engineer the game in a short amount of time using some custom tools I wrote, so I'm going to release them and ask for pull requests. Reverse engineering file formats is not a difficult process, but it is time consuming and it is more difficult to automate, so tools that do the work for us are valuable. That is why I'm releasing this simple set of tools I wrote.

If you'd like to follow along, you can buy Lume on Humble Store for $5.99. It supports Linux, Mac, and Windows. Lume has a Metacritic score of 69 and a high score of 83 by GameShark. A sequel was released recently called Lumino City (5 days ago) and it has gotten good reviews. It looks brilliant but it isn't released for Linux yet.

Read more »

AltSci Concepts Computer Journal - Jan 2014

AltSci Concepts Computer Journal

Read more »

A Short Classic Cryptography Blog


Dec 21, 2015

A certain game reminded me of a cryptography trick that I learned years ago and haven't had the opportunity to share. First, let's talk substitution ciphers. I'll give two challenges, one with spaces and one without.

GZKH YOQU TKP QY QB BKOB Q OATOPY KOWE BZ TXQBE O AZHF 
QHBXZUSCBQZH TKEHEWEX QV BXPQHF BZ ENJAOQH YZVEBKQHF 
YQVJAE COHB JEZJAE GSYB YBOXB XEOUQHF TKEXE VP VQHU 
YBOXBY TXQBQHF
PKCCAMSVCNSLADUYDUCLQUFDTCAFZSGDPFNTFSCCNXSTFKGDTXADUMM
SKLSMPODUCLXSFVKPFFZSJNMPFVKMKXMKVZXNISFZSMSPFDJFZSODMC
LKYZKTYSOMNFSKJSOPSTFSTYSPFDLSPYMNQSOZKFADUKMSOMNFNTXKQ
DUFJNMPFBDZT

The trick for the first one is to look at the list of possible two-letter words. Here is the top 101 words in order of occurrence in AI3.

of
in
to
is
as
by
on
at
an
In
or
it
he
be
He
It
no
up
On
fr
As
es
so
St
if
At
do
An
US
By
No
UK
uk
To
TV
we
If
id
Dr
go
BC
Mr
Of
My
my
OF
Jr
We
me
Me
CD
us
Is
am
Co
So
Al
AD
Up
DC
al
io
cm
Ed
FM
PC
Be
Do
hi
EP
Go
kg
FC
NY
yo
3D
AM
DJ
SS
LP
UN
co
Op
ad
os
Sr
Ma
SR
EU
mg
CA
Or
Wu
IP
MA
Oz
Oh
Am
HD
un
kW

There are plenty of two letter words in both challenges, so it should be fairly straightforward how to solve those. Once you've tried values for the two letter words, see what substituting the rest of the characters does to other words. You might find obvious words. If you have a dictionary on your system, you can use grep to find a word automatically. If you have the AI3 wordlist, you automatically get the results in order of likeliness which improves the search many times. It also contains words that a normal dictionary doesn't have.

Read more »

next »