Matt Sylvia MSylvia

WHOA THERE probably go look at this first: https://nytpu.com/gemlog/2021-04-15.gmi seriously it's so good

Setting up to Flash

Are you running linux? if not, go get a Linux VM. Ubuntu 20.10 worked for me.
follow the instructions here: https://github.com/Thore-Krug/Flash-CHIP it be very good yes

Fresh Flash First Steps

X-MAS CTF 2020 Writeup: Ken Kutaragi's Secret Code

Or, How to Reverse-Engineer a PS1 Game

X-MAS CTF 2020 was my first CTF – I do ROM hacking, fan translation, and hardware modding, but I haven't done much hacking related to modern systems, so I was a wee bit worried there wouldn't be many challenges suited to my skillset. Imagine my surprise and delight, then, when I saw the challenge Ken Kutaragi's Secret Code, which consists of a PlayStation executable! And wouldn't you know it? I've hacked away at quite a few PS1 games in my day! Not many people solved it, likely because it requires quite niche skills – so let me share those with you!

Identifying our goal

The challenge description is as follows.

Add new Youtube-dl copy to DMCA repo

Fork https://github.com/github/dmca
Download latest youtube-dl source code from https://yt-dl.org/latest
Extract
```
tar -xvf youtube-dl-2020.09.20.tar.gz
```
Push code to your fork as the GitHub CEO

Case study: Get dark command windows all the time in Windows

TL;DR

Make a copy conhost.exe from System32.
Open it with a hex editor (I use HxD).
In HxD, go to Search - Find - Hex-values.
Search for 881d9e530a004885c07477ff15b32e08009084c0.
In Windows 10 version 2004, replace ff15b32e0800 with 909090909090. If using Windows 10 version 20H2, replace ff15b32e08009084 with 9090909090909090.
Save file and copy it back to System32 (take ownership of original conhost.exe in order to replace it).
Profit!

	using System;
	using static SDL2.SDL;

	namespace SdlMenuExample
	{
	static class Program
	{
	public struct color
	{
	public byte r, g, b, a;

	// code updates are now there:
	// https://github.com/Bleuje/processing-animations-code/blob/main/code/sierpinskiloop/sierpinskiloop.pde

	// Processing code by Etienne JACOB
	// motion blur template by beesandbombs
	// See the license information at the end of this file.
	// View the rendered result at: https://twitter.com/etiennejcb/status/1367173073250758661

	int[][] result;
	float t, c;

	// only handles coplexity on top level, if you have a node with 1M children, you are out of luck
	// changes in clipped parts are not detected, so if somebody deleted nodes in clipped, scrollbar is not updated until user actually scrolls
	// scrolling and changes refresh the clipper == that part is as slow as no clipping at all
	// only single list in BeginChild/EndChild is tested
	struct TreeViewClipper {
	// persist
	float cursor_end = 0;
	float cursor_visible_start = 0;
	uint first_visible_index = 0;
	float last_scroll = 0;

	// ell clock https://twitter.com/cwillmore/status/1353435612636803073
	// developed with processing 3.5.4 (processing.org)
	// TODO:
	// - motion blur
	// - ripple update of ells - one only starts rotating when it has room to (<< ... <> ... >>)

	static final int DEPTH = 3;
	static final int N = 1 << (DEPTH + 1);
	static final int FRAME_RATE = 30;
	static final float DT = 1 / (float)FRAME_RATE;


	shader_type canvas_item;

	uniform vec4 color_1 = vec4(.0, .0, .0, 1.0);
	uniform vec4 color_2 = vec4(0.5, 0.5, 0.5, 1.0);

	void fragment() {

	vec4 colors[2] = {color_1, color_2};
	float min_diff = -1.0;

	shader_type spatial;
	render_mode unshaded;
	uniform usampler2D data_tex;

	/*
	Use with the following GDScript code:
	var data_img = Image.new()
	var data := PoolByteArray()

	var indexin = 0x8400