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Artisan’s Asylum Hovercraft Competition

BUILDS recently participated in the Artisan’s Asylum Hovercraft Design Challenge, which took place from Friday January 27th at 7:30pm to Sunday January 29th at 7:30pm. Upon arrival, teams were given kits containing two brush motors, two servo motors, a radio receiver and transmitter, a hunk of foam, and a plywood plank. After getting a basic rundown on how not to kill themselves with the variety of equipment available at Artisan’s Asylum, the teams got to work.

BUILDS entered two teams: Team McFly, containing Chris Woodall, Ian Felder, Alejandro Bancalari, and Marc Beneck; and The Cult of the Devouring Fan, containing Patrick Erlicher, Rusty Shomberg, Alex Whittemore, and Billy Gulotta. For both teams, Friday night was devoted to planning. The Cult of the Devouring Fan knocked out their designs and left early due to other obligations while McFly stayed up late cutting out the basic outline of the hoverboard in foam. With a double-thick foam base, McFly’s craft was far larger than any of the other teams’.

Saturday morning the members of McFly purchased more supplies and spent the day working. By the end of the day they were the only team with a completely functioning hovercraft, and therefore left early.

The Cult of the Devouring Fan wasn’t faring so well.

“We had really grand designs,” says Patrick Erlicher of their process. Unfortunately, the complex plans to combine lift and steering into one smooth mechanism weren’t possible with their situation: at any one time, they only had one working motor due to burnout of the other, and team members had other commitments and kept dropping in and out. By Sunday morning they were in rough shape: still attempting to optimize their craft but with no real functionality, team member Alex Whittemore was forced to bring in another motor. Things continued to go downhill: a member of the Cult was shipped off to the hospital after an incident with misjudged depth perception and the main fan of their craft, and by 7pm, the race just half an hour away, the craft still didn’t have enough torque to maneuver correctly.

McFly, comparatively, were taking the day easy. Confident about their early working craft from the day before, they arrived late and spent the day decorating their hovercraft. When it came to race time, they were pitted against the other larger crafts. As the race began one team didn’t take off, but McFly and the other craft floated down the track. Approaching the finish, the other craft’s motors burnt out and it crashed, blocking the path for McFly to get through. While fighting their way around it, McFly’s engines burnt out and the race was a scratch. They were able to replace their motor for the second race and was the only craft to take off, but unfortunately burnt out before the finish line again.

Meanwhile, the Cult of the Devouring Fan, running off chicken wings and prayers, decided to completely re-vamp their design half an hour before the race. They changed their propulsion system to push rather than pull air, remounting the rudder, and only tested this new design in the hallway en route to race. The only two crafts to lift off were the Cult’s newly christened “Brogle the Insatiable”, named after the BUILDS president, and Artisan’s Asylum’s own Magic Smoke. The Asylum’s team had a clever cooling method: to keep the motor from burning out, they put the body of the motor in a soda can full of ice cubes. It was a close race in that both crafts were definitely going to finish (many crafts had trouble taking off), but due to Brogle’s speed and the maneuverability it gained from being able to bounce itself out of corners meant that the Cult of the Devouring Fan came in first.

All teams that competed won one month free membership at Artisan’s Asylum, and Brogle the Insatiable remains on display as the winning craft for the next year. BUILDS was extremely impressed with the hospitality and facilities of Artisan’s Asylum and hopes to both compete and work with them again in the future.

27

02 2012

New BUILDS Room

BUILDS went through some recent changes starting with a forced change move as the building went under construction. We managed to hold on to most our original personality and stuff, but not everything made the trip. Some replacements had to be made especially in the art department.

Luckily, we have been able to quickly make up for what has been lacking thanks to some industrious BUILDSers. Take a look. Here are some pictures for your viewing pleasure.

TARDIS by Patrick

Previously known as the Boat Room (and a cornucopia of worse names), our small tool closet has been converted into the TARDIS. Naturally, this will give us a great deal more storage space since time lord technology makes it bigger on the inside.

Door by Dan, Pat, and me

Instead of working we revamped the door decoration today to have a fun interaction. I love this one, and you should check it out, but I want to see some variety. Contact Dan, if you have more ideas of what could be displayed there. We throw up a random one and swap it daily.

Red by David

….David wanted to help decorate so we gave him a nice easy project… He even did it all by himself.

SS Air Jelly (working title) by Monica

“Swag on! I’m so much better at painting than any of you.”

- Monica ‘The Gribbler’

There is plenty of wall space left as well as doors and cabinets. Stake your claim now talk to Monica if you want to do a big project. She is the baroness von taste now.

Peace,

Rusty

baron von website

p.s. We added some barons to assist the officers.

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11

12 2011

BUILDS Project: Buffer Overflows in gsubmit

In mid February, BUILDS found a Buffer Overflow exploit in gsubmit, an assignment submission tool actively used in the Boston University Computer Science Department. Upon discovering the vulnerability and authoring a proof of concept exploit, the CS Department and Lab Administrators were made aware of the problem. A new version of gsubmit which fixed these problems was installed on March 19, 2010, the day that BUILDS presented a poster and demo on this topic at the BU Computer Science Research Open House.

In the course of this project, work started on developing a tool that can statically analyze an ELF binary object for potential security vulnerabilities. Dubbed “Low Hanging Fruit”, this tool aims to discover possible problems in the binary, such as unchecked buffers, potentially dangerous library calls (such as the system() function), format string exploit attack vectors, etc. Development is ongoing, using the libelf and libdisasm libraries.

Submitted poster (with a full writeup of the hack)

Project contact: Kyle Brogle
broglekATbuDOTedu

20

04 2010

BUILDS Open House

For those of you that missed it, we had one hell of an Open House. The Open Organization of Lockpickers, the Graffiti Research Lab, and the Free Software Foundation all made a showing to help kick-off the opening of Boston University’s first hackerspace.


Here are a few choice pictures from the event, courtesy of Eric Schmiedl photography.


Be sure to check out BU Today’s Coverage of the event here!

22

03 2010