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The Bisexuallife Group

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Reversing ESP8266 Firmware (Part 4)

We start by loading the firmware at the base address 0 and try to mark as much code as possible. To be able to properly mark the code in IDA, we need to learn the typical instruction sequences common to Xtensa firmware. To find out which instructions to use in the function prologs, we took a sample from GitHub: esp8266/Arduino: ESP8266 core for Arduino.

Reversing ESP8266 Firmware (Part 4)

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