How to download a portion of Youtube Video with youtube-dl

First make you have both youtube-dl and ffmpeg installed:

sudo apt install youtube-dl ffmpeg

Then download a portion of your desired YouTube Video with the following command:

-ss 00:15 --> skip first 15 seconds of video
-t 00:45 --> record for 45 seconds

ffmpeg $(youtube-dl -g 'https://www.youtube.com/watch?v=oHg5SJYRHA0' | sed "s/.*/-ss 00:15 -i &/") -t 00:45 -c copy video.mkv

Darknet Links - Deep Web Links 2016

This is a list of working deep web links. To access the deep web you will need TOR. Either you can use the TOR Browser bundle or a more secure "version" of TOR to avoid being tracked online.

The list below is for educational/research purposes only.

Consider leaving a comment. No CP. Thank you!

How to unblock Kickass Torrents

KickassTorrents was founded in 2008 and is the most popular torrent directory in the world. Since March 2013, major UK ISPs are blocking the website. Also, Google Chrome started blocking the website in 2015 due to "unsafe" content.

How to bypass the blocking 

Fortunately it is rather easy to get around this barrier. In March 2016 Kickass made it possible for users to access the website on the TOR network, which is an anonymous network that makes it hard for your ISP to block content.

KickassTorrents can now be accessed via lsuzvpko6w6hzpnn.onion on the TOR network. The link will not work with your "normal" web-browser. What you need is the so-called Tor Browser.

STEP 1: Download Tor Browser

Go to the Torproject homepage and download Tor browser for your operating system.

STEP 2: Open Tor Browser

And put the KickasTorrents .onion link (lsuzvpko6w6hzpnn.onion) in the address bar. DONE! You have now unblocked Kickass Torrents regardless whether your ISP blocks the website or not.

Post-Install Tips & Tricks for Ubuntu 16.04

1. Install Media Codecs

Due to legal issues Ubuntu does not come with media codecs pre-installed, which are needed to play most audio and video formats. Installing the required codecs is straightforward:

sudo apt-get install ubuntu-restricted-extras

1.1 Install unrestricted version of libavcodec 

sudo apt-get install libavcodec-extra

2. Install Java

Most likely you will only require the Java browser plugin and OpenJRE.

sudo apt install icedtea-8-plugin openjdk-8-jre

3. Adobe Flash on Ubuntu

Unfortunately Flash is still needed for many web applications.

sudo apt-get install flashplugin-installer

Alternatively you can use chromium (recommended!).

sudo apt-get install chromium-browser chromium-browser-l10n chromium-codecs-ffmpeg

4. Install Linux Graphics Drivers 

AMD users will experience a drop in performance because the AMD driver is not supported as of now (June 2016) in Ubuntu 16.04. So think twice before upgrading if you are playing games or performing GPU-intensive work.

• 1) Open Software & Updates from the Unity Dash
• 2) Click on the Additional Drivers tab 
• 3) Follow on-screen instructions

5. Install a System Cleaner

BleachBit is an excellent open-source tool to keep your caches clean and perform some other essential housekeeping from time to time.

sudo apt-get install bleachbit

How to Install 0ad On Linux (Ubuntu, Debian etc.)

0 A.D. is a free, open-source, historical Real Time Strategy (RTS) game currently under development by Wildfire Games, a global group of volunteer game developers.

Ubuntu

sudo -s
add-apt-repository ppa:wfg/0ad
apt-get update
apt-get install 0ad

Debian

sudo -s
apt-get install 0ad

How to Run the Game 

From the command line:

0ad

How to connect to WiFi using command line Ubuntu, Debian etc.

Tried to upgrade to Ubuntu 15.10 Beta 2, rebooted  and my system was broken. Could not connect to LAN, so my only option was to connect to Wifi via command line to hopefully repair my system.

This is what I did.

First, open a terminal:

Ctrl-Alt-T

If you got WPA like me you need wpa_supplicant to set it up, because iw can only handle WEP.

To bring up your wireless device (most likely wlan0):

sudo -s
ifconfig wlan0 up
#now scan for available wifi networks and note the ssid of your device
iwlist wlan0 scan

In /etc/wpa_supplicant.conf we need to put our ssid and password:

nano /etc/wpa_supplicant.conf

Example config:

network={

                     ssid="ssid"

                     psk="wifi password"

}

Ctrl + A to close and save.
To connect:

sudo wpa_supplicant -B -iwlan0 -c/etc/wpa_supplicant.conf -Dwext

Open a second tab/terminal:

sudo dhclient wlan0

Your connection should now work!

How to crack MD5 hashes with hashcat

OS: Ubuntu 15.04

There is also a GPU version (oclhashcat), but I am on my notebook so I have to use the CPU only version, which - of course - is much slower.

Download the latest hashcat version here: https://hashcat.net/hashcat/

Download a wordlist: https://crackstation.net/buy-crackstation-wordlist-password-cracking-dictionary.htm

Create a MD5 hash: E.g.: 'hello'

echo -n "hello" | md5sum
5d41402abc4b2a76b9719d911017c592

Next, extract the hashcat archive and create a .txt file with the md5 hash(es) within the folder. Also, save the wordlist in the hashcat folder.

Start hashcat. Dictionary based attack.

Command:

./hashcat-cli64.bin -n 2 -m 0 -a 8  test.txt realhuman_phill.txt

-n,   --threads=NUM                 Number of threads
-m,  --hash-type=NUM              Hash-type
-a,  --attack-mode=NUM          Attack-mode

--> use ./hashcat-cli64.bin -h to display all available options.

test.txt is the file with the md5 hash(es) and realhuman_phill.txt is the wordlist.

Wait...

hashcat will create a filed named hashcat.pot which contains successfully cracked hashes. You can display its contents with cat:

user@user:~/Desktop/hashcat-0.50$ cat '/home/user/Desktop/hashcat-0.50/hashcat.pot'
5d41402abc4b2a76b9719d911017c592:hello

There you go: hello. 

Brute-force

If you want to read about brute-force (masked) attack have a look here: http://www.unix-ninja.com/p/Exploiting_masks_in_Hashcat_for_fun_and_profit/

Quick example of a brute-force attack for the md5 hash 'cat': 5d41402abc4b2a76b9719d911017c592

./hashcat-cli64.bin -n 2 -m 0 -a 3 test.txt ?a?a?a

?a?a?a specifies to go through all character combinations exactly 3 characters long. ?l?l?l would be lower-case only:

?l = abcdefghijklmnopqrstuvwxyz
?u = ABCDEFGHIJKLMNOPQRSTUVWXYZ
?d = 0123456789
?s = !"#$%&'()*+,-./:;<=>?@[]^_`{|}~
?a = ?l?u?d?s