[Bunnie’s] archives: Unlocking protected microcontrollers

A few years back [Bunnie] took a crack at cracking the security fuses on a PIC microcontroller. Like most of the common 8-bit microcontrollers kicking around these days, the 18F1320 that he’s working with has a set of security fuses which prevent read back of the flash memory and EEPROM inside. The only way to reset those security fuses is by erasing the entire chip, which also means the data you sought in the first place would be wiped out. That is, if you were limited to using orthodox methods.

[Bunnie] had a set of the chips professionally uncapped, removing the plastic case without damaging the silicon die inside. He set to work inspecting the goodies inside with an electron microscope and managed to hammer out a rudimentary map of the layout. Turns out that flash memory can be erased with ultraviolet light, just like old EPROM chips. Microchip thought of that and placed some shielding over the security fuses to prevent them being reset in this manner. But [Bunnie] managed to do so anyway, creating an electrical tape mask to protect the rest of the data stored in the chip while bouncing UV light underneath the shielding at an angle.

Want to uncap some chips of your own without enlisting the help of others? Give this method a try.

[via Dangerous Prototypes]

Chumby hacking by Bunnie

[bunnie] is one of the main people behind the Chumby, and even he can’t resist modding the things. He decided to outfit one with a larger LCD – using a stereo microscope to do the really fine pitch work – and a laser cutter to create a custom bezel for the finished piece. The new LCD is still a touchscreen and allows the Chumby to display 640×480 resolution over the stock 320×240. The mod requires a few parts, but the ultimate difficulty is caused by the surface mount connectors. If you’d rather have some software fun, you might want to check out [bunnie]’s Chumby wifi sniffer.

Certification For Open Source Hardware Announced

Today at the Open Hardware Summit in Portland, Alicia Gibb and Michael Weinberg of the Open Source Hardware Association (OSHWA) launched the Open Source Hardware Certification program. It’s live, and you can certify your own hardware as Open Hardware right now.

What Is Open Source Hardware?

Open Source Hardware can’t be defined without first discussing open source software. At its very core, open source software is just a copyright hack, enabled by a worldwide universal computer network. The rise of open source software is tied to the increasing ease of distributing said software, either through BBSes, Usenet, and the web. Likewise, Open Source Hardware is tied to the ease of distributing, modifying, and building hardware.

In the 1980s, there were no services that could deliver a custom circuit board to anywhere on the planet for a dollar per square inch. When open software began, CNC machines were expensive tools, now you can build a very good machine for just a week’s wages. We are currently living at the dawn of Open Source Hardware, enabled by the creation of Open Source design tools that have themselves been used to create physical tools. Inexpensive 3D printers, open source oscilloscopes, circuit board plotters, and the entire hackerspace movement are as revolutionary as the Internet. These devices and the Internet are the foundations for Open Hardware and software, respectively.  The objections to why hardware is incompatible with Open Source no longer apply and small-scale manufacturing techniques are only going to get better.

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New Part Day: A Truly Secure Workstation

There is a chain of trust in every modern computing device that starts with the code you write yourself, and extends backwards through whatever frameworks you’re using, whatever OS you’re using, whatever drivers you’re using, and ultimately whatever BIOS, UEFI, Secure Boot, or firmware you’re running. With an Intel processor, this chain of trust extends to the Intel Management Engine, a system running independent of the CPU that has access to the network, USB ports, and everything else in the computer.

Needless to say, this chain of trust is untenable. Any attempt to audit every line of code running in a computer will only be met with frustration. There is no modern Intel-based computer that is completely open source, and no computer that can be verified as secure. AMD is just as bad, and recent attempts to create an open computing platform have met with frustration. [Bunnie]’s Novena laptop gets close, but like any engineering task, designing the Novena was an exercise in compromise. You can get around modern BIOSes, coreboot still uses binary blobs, and Libreboot will not be discussed on Hackaday for the time being. There is no modern, completely open, completely secure computing platform. They’re all untrustworthy.

The Talos Secure Workstation, from Raptor Engineering, an an upcoming  Crowd Supply campaign is the answer to the untrustworthiness of modern computing. The Talos is an effort to create the world’s first libre workstation. It’s an ATX-compatible motherboard that is fully auditable, from schematics to firmware, without any binary blobs.

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Hacklet 125 – DIY Laptops

In the old days of the 1970’s, the only way to get your own computer was to build one from scratch. Thanks to an army of hackers like [Woz], PC’s are no commodity objects that can be bought for a couple of hundred dollars. The magic of building your own still is there though – especially when we’re talking about portable machines. Laptops, notebooks, netbooks take quite a bit of skill to assemble. Stuffing a keyboard, screen, and battery into a small clamshell case takes a bit of planning. Our last look at DIY laptops was exactly 100 Hacklets ago, so it’s time for a refresh. This week we’re checking out some of the best DIY laptops and portable computers on Hackaday.io!

piberryWe start with [Sahas Dinesh Chitlange] and Pi-Berry Laptop. [Sahas] found just the right mix of simple and elegant with this build. A Raspberry Pi 2 is the brains of the operation. The Pi sits in a case built from a mix of MDF and regular wood. The display is a 10.1″ HDMI LCD. The keyboard was pulled from a tablet case. Power was easy — a USB power bank provides enough for 4-5 hours of runtime. [Sahas] covered his laptop in Italian leather for a polished look. He planned out his parts layout well enough that the power-hungry Pi stays cool without a fan.

pivenaNext up is [Tim] with PIvena. [Tim] took his inspriation from [Bunnie Huang’s] Novena open laptop. Rather than roll his own ARM board, [Tim] went with a Raspberry Pi. His original design was for the Raspberry Pi model B. Last time we looked at PIvena, the model B+ was still pretty new. As we hoped, [Tim] modified his design to accept the new Pi layouts. This means it will physically work with the B+, Pi 2, and Pi 3 boards. [Tim] didn’t stop there though. He also upgraded from an 800 x 480 LCD to an 1200 x 800 LCD. He managed to do that while keeping the same bolt pattern on the travel cover. Nice work [Tim]!

elloNext we have [KnivD] with ELLO 2M. The most striking thing about ELLO 2M is the construction. The entire laptop is made from 6 PCBs which sandwich all the other parts. The keyboard is PCB material with keys routed out. The processor is a Microchip PIC32MX470-120. Software is loaded from one of 3 microSD cards. The 7 inch touchscreen LCD and 4500 mAh LiPo battery are nestled in between PCB layers. A true hacker, [KnivD] included a generous pin grid for debugging add-on circuits. The whole setup looks great with white silkscreen. As [Mark Sherman] mentioned in the comments, this machine reminds us of a modern-day TRS-80 Model 100.

pipdaFinally we have [pdrift86] with Mini rpi2 laptop. Palmtop might be a better name for this. [pdrift86] took his inspiration (and his keyboard) from the old HP Jornada Personal Digital Assistant (PDA). The housing is Masonite, cut from a clipboard. A Raspberry Pi 2 hides inside, along with a 4 cell 18650 Li-Ion battery. The screen is a 5″ LCD with a composite input. The display isn’t a touchscreen, so a Playstation Portable analog stick is on-board, and will eventually be connected for mouse control. [pdrift86] even managed to sneak the Pi camera on the back of his machine, so it can take pictures cellphone style.

If you want to see more DIY laptop projects, check out our new DIY Laptops notebooks, and portables list. Notice a project I might have missed? Don’t be shy, just drop me a message on Hackaday.io. That’s it for this week’s Hacklet, As always, see you next week. Same hack time, same hack channel, bringing you the best of Hackaday.io!

Nintendo Wields DMCA Ax On Fan Games

In a move that may sadden many but should surprise nobody, Nintendo of America has issued a DMCA takedown notice for 562 fan-created games created in homage to Nintendo originals and hosted on the popular Game Jolt site. Games affected include Mario, Zelda, and Pokémon based creations among others, and Game Jolt have responded, as they are required to, by locking the pages of the games in question. They state that they believe their users and developers should have the right to know what content has been removed from their site and why the action has been taken, so they have begun posting any notices they receive in their GitHub repository.

It is likely that this action won’t be appreciated within our community, however it’s important to note that while there are numerous examples of DMCA abuse this is not one of them. Nintendo are completely within their rights over the matter, if you use any of the copyrighted Nintendo properties outside the safe harbor of fair use then you will put yourself legitimately in their sights.

Something that is difficult to escape though is a feeling that DMCA takedowns on fan-created games are rather a low-hanging fruit. An easy way for corporate legal executives to be seen to be doing something by their bosses, though against a relatively defenseless target and without really tackling the problem.

To illustrate this, take a walk through a shopping mall, motorway service station, or street market almost anywhere in the world, and it’s very likely that you will pass significant numbers of counterfeit toys and games copying major franchises including those of Nintendo. A lot of these dollar store and vending machine specials are so hilariously awful that their fakeness must be obvious to even the most out-of-touch purchaser, but their ready availability speaks volumes. Unlike the fan-created games which are free, people are buying these toys in huge numbers with money that never reaches Nintendo, and also unlike the fan-created games there’s not a Nintendo lawyer in sight. Corporate end-of-year bonuses are delivered on the numbers of violations dealt with, and those come easiest by piling up the simple cases rather than chasing the difficult ones that are costing the company real sales.

We’ve covered many DMCA stories over the years, and some of them have been pretty shocking. Questions over its use in the Volkswagen emissions scandal, or keeping John Deere tractor servicing in the hands of dealers. Let’s hope that the EFF and Bunnie Huang’s efforts pay off and dismantle section 1201, one of the most nonsensical parts of the law.

Via Engadget. Dendy Junior unauthorised Nintendo Famicom clone image, By Nzeemin (Own work) [CC BY-SA 3.0], via Wikimedia Commons.

Cory Doctorow Rails Against Technological Nihilism; Wants You to Have Hope

I was skeptical about a two hour block allotted for Cory Doctrow’s keynote address at HOPE XI. I’ve been to Operas that are shorter than that and it’s hard to imagine he could keep a huge audience engaged for that long. I was incredibly wrong — this was a barnburner of a talk. Here is where some would make a joke about breaking out the rainbows and puppies. But this isn’t a joke. I think Cory’s talk helped me understand why I’ve been feeling down about our not-so-bright digital future and unearthed a foundation upon which hope can grow.

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