Wirebuzz: A simple cable continuity tester

Electronics, , , , ,
Continuity testers are very useful tools, especially when you need to find where a cable goes (if you have multiple cables) or to verify the integrity of the cable. This continuity tester was made for the sole purpose of testing long cables and it is not suitable for some components because it uses 12v so that it can be able to test long cables. Parts Tools Regarding tools you don’t need anything special, i highly recommend a thin conical tip for the soldering iron if you will be using the 3d printed enclosure. Schematic The schematic is quite simple. On…

How to adjust the accuracy of a Vostok Komandirskie

Mechanical, , ,
Those Vostok watches are pretty good for their price i got mine for about 50-60€ from ebay and it has been working great. Even though are not famed for their accuracy they are pretty durable, with a service interval of 10 years compared to 3 that most manufacturers suggest. It is said they are the watch equivalent of the AK47. Mine was working well losing just a few minute per month, until suddenly it started losing 30-40 minutes a week! To be honest i did bang it a few times while wearing it (if you get one be careful of…

Dual gear drive lubrication

3D Printing, Mechanical, , ,
Those cheap(15-20€ from banggood at the time of writing) dual gear drive extruders are pretty useful. They grip the filament very well and prevent sliping, they also almost necessary for flexible filaments. They are also more durable than the plastic ones included with most creality printers (like my ender 3), the stock plastic ones have the tendency to crack. While it is an easy and affordable upgrade it has one issue, it lacks proper lubrication. I had mine for about two years before it started doing a clicking noise and soon a loud clunking noise, it has especially noticeable during…

SATA power supply

Electronics, ,
Have you ever needed to power a HDD for testing purposes, diagnostics etc. but you did not have an available SATA power cable ? Then this project is ideal for you. How it works Its a pretty simple and easy project. All that the device does is use dc-dc buck converter modules to drop the 12v dc from an external power supply to 5v and 3.3v. I also added a switch for the 3.3v rail because some HDDs read the 3.3v as a shutdown signal and an led. Schematic Parts DC – DC buck converter : The hart of this…

MDCrack how to crack hashes (MD4/MD5/NTLM1)

Software, , , , , , , ,
MDCrack is a powerful and fast hash cracker. It can brute force MD5, MD4 and NTLM1 hashes. MDCrack is mainly a CMD tool but there is a GUI available. It is available for Windows and for Linux. Usage MDCrack is easy to use but first we will need a hash to test, you can generate one using your Linux terminal or one of the many websites available. To generate an md5 hash in Linux you can use the following command I have already used this command to generate the hash to the word ‘pass’ To crack an md5 hash run…

Shredding a file in Linux with shred

Software, , , , ,
When deleting a file by simply pressing the delete button the file can be easily recovered, you don’t always want that. That’s where shred comes in, What shred does is to wipe the file and make it unrecoverable. This can be very useful if you want to delete a file with sensitive data. Usage Basic options :        -f    force permissions        -u   remove after        -v   verbose        -z   write zeros at the end        -n [number]   times of shreddingIf you are not running the…

Cracking archives with rarcrack

Software, , , ,
Rarcrack is a handy tool used for cracking encrypted archives. It can be very useful if you forget the password to an encrypted archive. It supports zip, 7z and rar. But on the downside it is slow, the cracking speed depends mainly on your CPU. Usage The options :       –help displays the help file       –type [rar/zip/7z] set the archive type       –threads [2-12] set the number of threads default 2 max 12 If you are not running the command as root, you need to add sudo. Example For this example i created an encrypted 7z…

Cracking truecrypt containers with truecrack

Software, , ,
Truecrack is a software used to crack truecrypt containers using brute force or wordlist attack. It can be useful if you have created a truecrypt container and forgotten the password. The cracking speed depends on the computers CPU. Syntax  Basic options :       -w [path] wordlist      -c “[characters]” charset for brute force      -s [number] minimum password length      -m [number] maximum password length      -v verbose modeYou can read Hydra’s documentation with the following command. Example   For this example i have created a truecrypt container with the default options with a password…

Cracking FTP with hydra

Software, , , , , , ,
Hydra is a fast login cracker that supports a lot of protocols. It is a command line tool, but a GUI is available. The FTP (File Transfer protocol) is used to remotely access files. The cracking speed is low but with a weak password and a good wordlist it is possible to be cracked. Most attackers will try to crack a password only if there is no other way in(e.g using an exploit or social engineering). This is a list of supported protocol that hydra supports as listed in the official website :Asterisk, AFP, Cisco AAA, Cisco auth, Cisco enable,…

Sticky keys privilege escalation on windows XP

Software, , , , , ,
The purpose of a privilege escalation attack is to gain more privileges over an operating system. An example can be gaining administrator privileges from a restricted account on windows XP system which is what we are going to do today. How does this attack work ? This attack is a fairly simple one. The way it works is by replacing the ‘sethc.exe’ with the ‘cmd.exe’ file which are both located in the system32 folder, ‘sethc.exe’ is the application that runs when you press shift five times. Then all you have to do is press shift five times in the login…