Thursday, July 16, 2015

Broken, Abandoned, and Forgotten Code, Part 11

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In the previous part, we moved away from emulation to working with physical hardware. We identified a UART header inside the Netgear R6200 t...
Thursday, July 09, 2015

Broken, Abandoned, and Forgotten Code, Part 10

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Debugging and De-bricking the Netgear R6200 via UART Update: I forgot to credit my former colleague, Tim ( @bjt2n3904 ), for helping me l...
Thursday, June 25, 2015

Broken, Abandoned, and Forgotten Code, Part 9

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In the previous part , we switched gears back to the Netgear R6200 upnpd after spending some time analyzing httpd . The HTTP daemon provide...
Thursday, June 18, 2015

Broken, Abandoned, and Forgotten Code, Part 8

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In the previous few posts , we spent time reversing how the Netgear R6200's HTTP daemon parses a firmware header before writing the fi...
Monday, June 08, 2015

Broken, Abandoned, and Forgotten Code, Intermission

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We're about halfway through the Broken, Abandoned series, so this is a good time to pause for a minute and take stock. At this point, t...
Thursday, June 04, 2015

Broken, Abandoned, and Forgotten Code, Part 7

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In the previous post , I finished discussing the abCheckBoardID() function. I called attention to a checksum in the header generated by an ...
Thursday, May 28, 2015

Broken, Abandoned, and Forgotten Code, Part 6

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Note:   It is assumed that the reader is debugging the processes described in this and the next several posts using emulation and IDA Pro. T...