Fudging with firmware analysis.pdf

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Fudging with Firmware
Firmware reverse-engineering tactics
23C3
27-30 December 2006
Berlin, Germany
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The (s)talker
“Who is this guy anyway”
khorben
I work for n.runs AG
I code for Open Source projects
(mostly my own)
and ÜberWall of course :)
27-30 December 2006
Fudging with Firmware
khorben
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What's the plan?
“Where you need slightly larger glasses”
I.How does it look?
II.First peek under the hood
III.Identification
IV.Is there more to it?
V.Have some fun
27-30 December 2006
Fudging with Firmware
khorben
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Before we start
“Someone tell him it's already started”
● Focusing on firmwares likely to host an
Operating System
● Assumes you know how to obtain some:
– Read your hardware documentation
– Look for undocumented features
– Check web sites extensively
– Use your imagination...
27-30 December 2006
Fudging with Firmware
khorben
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I. How does it look?
“I'm looking better than good, I'm looking nice”
● Unpacking
– Presentation
– Compression
– Bootloaders
– Extraction
● Storing
– Filesystems
27-30 December 2006
Fudging with Firmware
khorben
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