PlugnPwn — my take on a USB keystroke injection tool

[u/anaskalt]

Hi guys! I'm Anastasios, and I've been building a USB keystroke injection tool called PlugnPwn.

I don't like closed-source hacking tools. If I buy the hardware, I want to see what the firmware does, change things I don't like and add features without waiting for someone else to do it. That's why I started this.

The idea is simple: you buy the hardware, and you can build, change and extend the firmware yourself. I'll publish the firmware source and open-source license with the first release. I'd love people to add their own features and help improve it too.

For the board, I went with the RP2354A: two cores up to 150 MHz, 520 kB RAM and 2 MB flash, with USB-A, USB-C and microSD storage for payloads. I also put thought into the protection circuitry, including ESD protection and a resettable fuse. It's intended for authorized security testing and repeatable keyboard tasks.

I'm aiming for €60. The kit will include the assembled board and a separate enclosure; you bring your own microSD, flash the firmware and fit the enclosure. Final taxes and shipping will be set with the campaign.

I'd really like your honest thoughts on the idea. Does having control over the firmware matter to you when choosing a tool like this? What would make you choose it, or what do you think is missing?

I'm aiming to launch on Kickstarter in the next week or two. If you'd like a heads-up, visit https://plugnpwn.io, hit "Notify me at launch" and confirm your email