and 500 copies of his self-published tell-all "Hacking the Xbox: an
Introduction to Reverse Engineering," weeks before its scheduled May
publication date, despite -- or perhaps because of -- looming
some that the book skirts the edges of legality.
"It' s about getting the book out there on principle, because I can't
publisher willing to publish it," says Huang. "I think it's
but not illegal."
With chapters on "Soldering Techniques" and "Installing a Blue LED,"
how-to may not seem an obvious candidate for joining Huckleberry Finn
Harry Potter on history's sad list of once-banned books. But Microsoft,
maker of the Xbox, has taken a dim view of home modifications of the
console, focusing its litigious ire in particular on "mod chips" that
Xbox owners to run software that Microsoft hasn't approved and licensed.
With a mod chip installed, users can run everything from virtual juke
to the Linux operating system on the game platform -- as well as pirated
copies of Xbox games.
Last year, a Microsoft lawsuit temporarily shut down the Hong Kong-based
company Lik Sang, which sold mod chips over the Internet. And last
mod chip entrepreneur David Rocci was sentenced
five months in federal custody for conspiracy to violate the Digital
Millennium Copyright Act. Rocci was the proprietor of a U.S. website
sold mod chips and helped users locate pirated copies of Xbox games to
on their modified machines.
Huang says his book describes some types of mod chips -- explains how
work, and what lessons they offer designers of secure hardware
For example the "Matrix" chip installs solderlessly over a test port
manufacturers left on the Xbox motherboard. "You don't leave these test
structures on the motherboard, if you want it secure," says Huang.
chapter helps readers replace the machine's firmware -- a mod chip trick
used by sophisticated pirates and tinkerers. "They can be used by the
pirating community, and they can be used by the Linux community -- so
one chapter that talks about firmware devices plays to the Linux
says Huang. "I believe that should be a legal activity."
DMCA FEARS. The book also revisits a technique that cemented Huang's reputation as a
hardware hacker last year, which involves building custom hardware to
intercept an encryption key as it crosses the Xbox's internal high-speed
bus. To avoid legal complications, Huang published his research paper
the technique only after receiving permission from Microsoft, negotiated
with the help of EFF attorney Lee Tien. "To get the paper published in
first place we had to negotiate a legal mine field," say Tien, who went
to contribute a chapter on the legalities of reverse engineering to
But Huang didn't get Microsoft's blessing for Hacking the Xbox, which
beyond discussing a single hacking technique. The book aims to teach
readers how to think like a hardware hacker, using the internal secrets
the game console the way a med school teacher uses Gray's Anatomy. With
boundaries of federal copyright law, particularly the DMCA, unclear,
says tech-publishing house John Wiley & Sons got cold feet and withdrew
to publish the book sometime after Rocci's guilty plea.
Wiley didn't return phone calls on the matter.
Unable to find another publisher, Huang elected to sell the book himself
through the Web. He dug into his own pockets to fund a print run of
books, which he says will be delivered to his home later this month.
be only a matter of two weeks when a pallet of books comes to my
he says. "Every book will be boxed by my own two hands."
Huang began accepting credit cards through his website this week, after
selling nearly half of his initial print run through a PayPal account.
says he's barely reached the break-even point. "He's not going to make a
huge amount of money," says Tien. "He thinks that it's worthwhile stuff.
That it's interesting, and it's teaching people."
"Mainly, at this point, it's boiled down to a political battle, for the
freedom to tinker," says Huang. "For my entire life I've been playing
hardware. This is the first time someone's told me I can't play with
hardware because it's illegal." By Kevin Poulsen