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Hackvent 2019: Day 7

08 Dec 2019

  Challenge HV19.07 Santa Rider

Resources: For easy download, get it here: HV19-SantaRider.zip Solution We watch the provided video and notice that about half way through the LEDs light up in an interesting order. There are 8 total LEDs and multiple LEDs light up at once so we think that this may be hidden binary…read more.

 
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Hackvent 2019: Hidden 1

06 Dec 2019

  Challenge HV19.H1 Hidden One

Solution During the Day 6 challenge HV19.06 bacon and eggs, we notice there is a lot of suspicious whitespace (space and tab) characters after each line of statistics about Francis Bacon. As the theme for this challenge was crypto, we Google search for white space cipher. One of the…read more.

 
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Hackvent 2019: Day 6

06 Dec 2019

  Challenge HV19.H1 Hidden One Francis Bacon was an English philosopher and statesman who served as Attorney General and as Lord Chancellor of England. His works are credited with developing the scientific method and remained influential through the scientific revolution. Bacon has been called the father of empiricism. His works argued for the possibility of…read more.

 
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Hackvent 2019: Day 5

05 Dec 2019

  Challenge HV19.05 Santa Parcel Tracking

Image mirror: Solution Initially we try scanning the barcode as it looks like a Code 128 barcode. It works but gives us the string Not a solution which is unfortunately a dead end. After a lot of experimentation, we manually note down the hexadecimal values for each colour in sequence. We decided…read more.

 
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Hackvent 2019: Day 4

05 Dec 2019

  Challenge HV19.04 password policy circumvention

File mirror: HV19-PPC.zip Solution We download this zip file and extract it to find a HV19-PPC.ahk  file. We know that ahk files are AutoHotKey files. Upon inspecting the ahk file we find that this is in fact the case. The script seems to move the cursor around and…read more.

 
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Hackvent 2019: Day 3

03 Dec 2019

  Challenge HV19.03 Hodor, Hodor, Hodor

Solution At first this looks like it may possible be a hidden code with different variations of hodor mapping to English alphabet characters. However, before we look into frequency analysis we do a Google search for hodor programming language and discover that such an esoteric language exists! We find an…read more.

 
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HACKvent 2019: Day 2

02 Dec 2019

  Challenge HV19.02 Triangulation

File mirror: a5f47ab8-f151-4741-b061-d2ab331bf641 Solution We know that a stl file is 3D model file. Thus naturally we open this file up in a 3D model viewer. On Windows we initially attempt to use 3D Builder. From the hint that says to ‘not break it’ so we really want to break it and…read more.

 
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HACKvent 2019: Day 1

02 Dec 2019

  Challenge HV19.01 censored

Solution The hint indicates that we should have a clearer smaller image available to us. At first we attempt to shrink the image, resharpen and enlarge but there is too much degradation for that to work. We also open the image in GIMP and mess with levels/contrast with no luck.…read more.

 
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Restoring Facebook’s Birthday Calendar Export Feature (fb2cal)

31 Jul 2019

Context Around 20 June 2019, Facebook removed their Facebook Birthday ics export option. This change was unannounced and no reason was ever released. As a heavy user of this feature I was very upset. I use the birthday export feature to be reminded of upcoming birthdays so I can congratulations friends and family. After it…read more.

 
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Discord Discriminator Farming

30 Apr 2018

This post outlines how I got the Discord discriminator that I wanted. This process is old and is no longer required as Discord now allow you to change your discriminator via Discord Nitro. What are discriminators? Discord is a free modern voice and text chat application. Discord uses usernames to identify its users. However, instead of…read more.

 
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