Sector size (logical/physical): 512B/512B Most of my card is left out of the formatted partition, parted However, the Kali image for Pi is designed to fit on a tiny 4GB SD card, while I am using a larger 16GB card. This takes a few minutes to complete, at which time we have a bootable card we can insert into the Pi. In my case, this was the actual command line:ĭd bs=1M if=c:\temp\kali-1.0.9-rpi.img od=e:\ If you are using dd, the syntax is as follows:ĭd bs=1M if= kali_image.img od= SD_Drive_Letterīs=1M defines the block size used for reading and writing it is not terribly important for our purpose, but using something larger than the default 512K makes for faster data transfers kali_linux.img is the full path to your downloaded and extracted Kali image SD_Drive_Letter is the drive letter your computer has assigned to the SD card. Next, copy the Kali image onto the SD card (you'll need a card reader/writer for this). Pay close attention to the physical device you select - if you remove the partition that holds your Windows drive, you'll then wonder why your PC no longer works. Use diskpart to remove the existing NTFS partition on the SD card. Windows has a built-in tool called diskpart that can be used to manage partitions (essentially what we think of as drive letters). Typically, SD cards are going to come pre-formatted for Windows, so let's erase the existing formatting. I am writing this as it would be done from a Windows PC the commands are slightly different if done from Linux or a Mac. Now that we have our software lined up, let's prepare the SD card. dd is a Unix program for making exact copies of a disk a Windows port of dd is also available. We're not in Windows-land either, so you need a way of installing the image. The latest revision can be downloaded from (look under Kali Linux Custom ARM Images). Kali Linux, the successor to the highly popular (and highly regarded) BackTrack Linux distribution used by many security professionals and pen testers, is available in an image specifically designed for the Raspberry Pi. There are a variety of operating system images available for the Pi, but I had one in particular in mind. It does not come with an operating system (in fact, until you add an SD card, it doesn't even have a place to put an operating system), so the next step is to load some software. If you've already built a Kali / Snort box, check out another blog post where I show using it to detect malware and phishing scams by monitoring DNS query responses from OpenDNS. In truth, I could have gotten by with a smaller SD card, but the software tools I had in mind to use take up some space, and network captures can quickly fill up a drive. I picked up bundle with the Raspberry Pi model B, clear case, and wireless adapter for $49.95, plus a 16 GB SD card for another $10. You can buy a Pi with a protective case, an SD card, and a power supply for around $50 to $60. Altogether a bare-bones Pi costs about $35. The Raspberry Pi is a minimalist computer: a processor a bit of memory ports for network, video, and sound an SD card slot for data and operating system storage a few USB ports to attach additional components and a micro-USB port to supply power. this time I am putting it to legitimate use. Earlier this year I posted an April Fools gag on various uses for a Raspberry Pi. I wanted something a little more elegant though. Building a tap is a nice little project, but what do you do with it? A simple first step is to install Wireshark on a laptop and capture some packets. Last week I wrote about building a passive network tap with about $10 in off-the-shelf parts.
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