Hak5 1722 – WiFi Deauth Attacks, Downloading YouTube, Quadcopters and Capacitors

WiFi Deauth attacks using the new WiFi Pineapple firmwares Recon Mode, downloading YouTube videos from the command line, quadcopters on a boat, and capacitors. All that and more, this time on Hak5!

Download HD  |   Download MP4

Downloading from YouTube

Youtube-dl is amazing. I’m completely switched over from all of the other Firefox plugins and other hacks. Best of all, it’s open source and command line driven – meaning it can be used as part of scripts to systematically download videos from YouTube. It also supports a plethora of other video sites. I really can’t speak of it highly enough. Check it out at http://rg3.github.io/youtube-dl/.

What is a Capacitor?

Two-Terminal electrical component. Can store energy, instead of limiting it or emitting it. Used to suppress voltage spikes, signal filtering, and local energy storage.
On schematic… – Should have name and capacitance # (i.e. how many farads).
Farad tells you how much charge it can store. More capacitance = more capacity to store a charge. 1 Farad is a lot of capacitance. Usually = picofarad (10 to the 12th) or microfarad (10 to the 6th)

How is it made? – Two metal plates with dielectric insulation stuff in middle. Plates far away from each other = less capacitance. Plates close together = higher capacitance.
The reason why it works the way it does is because of those super fun electrons. Negative electrons get sucked into the capacitor through one side and get ‘stuck’ on the metal frame. The positive ones end up on the other plate. The positive and negative electrons are attracted to each other and end up in this forever dance cycle because they can’t get past that dielectric stuff in the middle. This creates storage of energy.
Eventually the capacitor won’t be able to hold anymore of those negative electrons on one of the plates, so it starts kicking out others who want to join, sorta like an elite club that only allows so-many people in.

The farads will tell you the max amount of electrons that capacitor can hold.

MATH! Q=CV means Q (charge currently being stored) = C (Capacitance in farads) * V (voltage between it’s plates). Farads is known. More voltage = more charge and vice versa. If I have a 1 farad capacitor, and 2 volts, I can store 2 coulombs of energy per 2 volts. The amount of current through the cap depends on the capacitance and how fast the voltage rises or falls. If the voltage is high, the current will be high. A slower rising voltage = a slower current. If the voltage is unchanging, the current is unchanging, nothing happens. I don’t want to bore you to death with calculating current thru a cap, so we’ll skip that until we get into more in depth builds.

What do they look like?

Keep in mind: More capacitance = a larger cap. If you exceed the max volt, you can pop a cap. Caps will leak stored energy over time, but slowly. Usually have 0.01 or less resistance called the equivalent series resistance. Tolerance (or the capacitance rating) might be off from + or – 1% up to 20%.

Ceramic capacitors are orange, small, and have low capacitance. Come in sizes less than 10 microfarads. They are also very cheap!

Electrolytic caps are cylindrical, range from 1 microfarad up to 1 millifarads, and store lots more capacitance in a small size. They are also polarized, so make sure you plug them in the right way or they POP! Anode must be at higher voltage than cathode, but they have short and long legs or are marked with + and -. Also problem with leakage in these.
Supercapacitors store huge amounts of charge but can’t deal with lots of voltage. They are small and blue (sometimes)

Others also, but we won’t go into those.

Multiples

If you put sev. caps in a parallel design, the total capacitance of that board will be the sum of all caps.

Caps in a series is weird though. The total capacitance of caps in a series is the inverse of their sum of all inverse capacitances. So if I have 2 10farad supercaps, they would normally equal 20. But you’d take c1*c2 and divide by their added total of 20. 10*10 = 100 / 20 = 5 farads.”

3 Comments

  • Sienna
    Reply

    Although, there are small, micro options available. Flight in an enclosed area is inherently more difficult due
    to the space limitations and cornering constraints. The Phantom 2 is the best choice
    if you want a higher-end UAV for synching with the Go – Pro perfectly.

  • jl98u0g9hy
    Reply

    [url=http://tiffanytw.rochecap.org/]tiffany co台灣官方網站[/url] 除此之外,它還能改善姿勢,因為它有助於燃燒卡路里,mbt鞋門市當走去。 也很暖和(不會造成損傷); 利用生物力學的設計可以增強你的體格。 貿易雜誌估計生理鞋的全球市場價值為1億美元。 讓你的腳幾乎平行和臀部同寬。 它挑戰了難以觸及的肌肉在你的腿,但也適用腹部,背部,臀部和大腿肌肉。 [url=http://conversetw.nicacan.org/]converse 鞋[/url]

    [url=http://verecondos.com/tw/toms.html]toms 台灣[/url] 長此以往,關節功能將受到損害,最終導致嚴重行走困難。 但是如果沒有選對網上商城,就會產生很多問題,致使購物不愉快,購買的商品也不理想,售後也不好心情就更差了。 行走的速度不能在初始階段增加。 [url=http://tomstw.pathood.org/]toms shoes 台灣[/url]

    [url=http://verecondos.com/tw/toms.html]toms shoes 台灣[/url] 在MBT休閒鞋運動鞋的時尚舞臺上,大面積不對稱的褶邊層疊,不經意的帆布毛邊,使這一季更加耀眼。 他們的鞋子有一個彎曲的鞋底,使行走滾動運動能促進平衡,色調的腿和腳,並改善姿勢。 皮革等動物皮張被經常用在早期的鞋。 [url=http://new-balancetw.com.tw/]new balance taiwan[/url]

    [url=http://twconverse.tw/]converse 特賣[/url]
    [url=http://flipflopshoesale.com.tw/]fitflop 鞋[/url]
    [url=http://tomstw.pathood.org/]台灣toms專櫃[/url]

  • ke94g2h3nv
    Reply

    [url=http://fitflopsingapore.sfcpa.org/]buy fitflop online singapore[/url] For more information, .800.541.6308.ShopRDR Designer Fashion Tips: Four Tips To Perfect Your Cardigan Look His clients included Diana Ross and former First Lady Nancy Reagan Novelli estime qu’il y aura 100 à 150 hôtels cinq étoiles en France et la désignation « palace » disparaitra [url=http://fitflopsaustralia.snohomishparks.org/]cheap fitflop[/url]

    [url=http://fitflopsaustralia.pathood.org/]buy fitflops[/url] In fact, more than 50 million Americans suffer from mild to moderate acne (i.e., pimples.) The ThermaClear device uses a process 49.95 Why not send him to a renowned golf school like Jim Mclean’s Buy, sell or consign favorite luxury designers such as Louis Vuitton, Chanel, Prada, Gucci, St [url=http://fitflopsaustralia.snohomishparks.org/]fitflops on sale[/url]

    [url=http://fitflopsg.snohomishparks.org/]fitflops singapore sale[/url] Quickly becoming one of the most popular luxury consignment stores on the strip, the company went from a modest storefront, to a larger location, before opting to take its business to the web at the advent of online consignment Additionally, Auction Systems is an ICIC INC A One of a kind Denim Art Piece Jacket [url=http://fitflopsg.snohomishparks.org/]fitflop in singapore[/url]

    [url=http://fitflopsingapore.sfcpa.org/]fitflops on sale[/url]
    [url=http://fitflopsaustralia.pathood.org/]buy fitflop[/url]
    [url=http://fitflopsingapore.sfcpa.org/]fitflop online sale[/url]

  • CelestaOKomer
    Reply

    I absolutely love your blog.. Great colors & theme.
    Did you build this amazing site yourself? Please reply back as I’m trying to create my very own site and
    want to learn where you got this from or just what the theme is named.

    Many thanks!

  • we hear it
    Reply

    Your style is unique in comparison to other folks I’ve read stuff from.

    Thanks for posting when you have the opportunity, Guess I
    will just book mark this page.

  • http://freeinstagram.pw
    Reply

    I must thank you for the efforts you have put in writing this website.

    I’m hoping to check out the same high-grade content by you
    in the future as well. In fact, your creative writing
    abilities has motivated me to get my own, personal blog now 😉

  • AshlynCJerauld
    Reply

    Aw, this was a really nice post. Spending some time and actual effort to
    produce a really good article… but what can I say… I procrastinate a whole lot and don’t
    manage to get nearly anything done.

  • Alfonso
    Reply

    It’s actually a cool and useful piece of info. I’m satisfied that
    you just shared this helpful info with us. Please keep us up to date like this.
    Thanks for sharing.

  • commerce options
    Reply

    Attractive component of content. I simply stumbled upon your site and
    in accession capital to say that I get in fact loved account your weblog
    posts. Any way I will be subscribing in your augment or even I fulfillment you access consistently
    rapidly.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>