ctf.2020.brixelwinter.Are_you_fast_enough.submitter.py

# submitter.py
# this was written to solve the "Are you fast enough?" challenge

# By Aleksey
#  - github.com/Alekseyyy
#  - medium.com/@EpsilonCalculus

import time
from selenium.webdriver import Firefox
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.common.keys import Keys

# Configure the browser
options = Options()
options.set_headless()
assert options.headless
my_browser = Firefox(options=options)
my_browser.get("http://timesink.be/speedy/index.php")

# Get the random string
the_key = my_browser.find_element_by_id("rndstring")
the_key = the_key.text

# Submit the random string
submission = my_browser.find_element_by_id("inputfield")
submission.send_keys(the_key)
submission.send_keys(Keys.ENTER)
time.sleep(0.5)

# Display the flag
src = my_browser.page_source
flag = src[src.find("{") + 1 : src.find("}")]
print("brixelCTF{" + flag + "}")

ctf.2020.brixelwinter.browsercheck.crawl_simulate.py

# crawl_simulate.py
# this was written to solve the "Browsercheck" challenge

# By Aleksey
#  - github.com/Alekseyyy
#  - medium.com/@EpsilonCalculus

# this is what I'm ripping off...
# - https://stackoverflow.com/questions/24226781/changing-user-agent-in-python-3-for-urrlib-request-urlopen
# - https://ourcodeworld.com/articles/read/812/how-to-create-an-html-file-viewer-with-wxpython
 
import wx
from wx import html
 
from urllib import request
 
class MyHTMLFrame(wx.Frame):
	def __init__(self, parent, title, haxedpage):
		wx.Frame.__init__(
			self,
			parent,
			-1,
			title,
			size = (600, 400)
		)
 
		thisHtml = html.HtmlWindow(self)
 
		if "gtk2" in wx.PlatformInfo:
			html.SetStandardFonts()
 
		thisHtml.SetPage(haxedpage)
 
my_request = request.Request(
	url="http://timesink.be/browsercheck/",
	data = None,
	headers = {
		"User-Agent": "Mozilla/5.0 (compatible; Ask Jeeves/Teoma; +http://about.ask.com/en/docs/about/webmasters.shtml)"
	}
)
 
page = request.urlopen(my_request)
page = page.read().decode()
 
renderer = wx.App()
renderedPage = MyHTMLFrame(None, "EntropyThot Rulz :D", page)
renderedPage.Show()
renderer.MainLoop()

ctf.2020.brixelwinter.Keep_walking.implementation.py

# implementation.py
# this was written to solve the "Keep walking..." challenge

# By Aleksey
#  - github.com/Alekseyyy
#  - medium.com/@EpsilonCalculus

x, y, p = 1, 1, 1
a = None

while x <= 525:
	a = x * y + p + 3
	p = a
	x += 1
	y += 1

print("brixelCTF{" + str(a) + "}")