Just another reversing blog.
Making Prusa Core One great (and silent) again For fixing loudness on printing For fixing printing issues Tuning and calibration using firmware >= 6.4.0-alpha Belt tuning If the printer is turned on, first disable the motors using Control->Disable motors in order not to break the hw board due to voltage overload Move the extruder to the center and the gantry to the back Start with loosening the…
Setting up a Qualcomm Trustzone Aarch64 Debug Playground for Android Introduction TLDR: Grab an smartphone with secure boot unfused Qualcomm Chipset, set it up for Trustzone debugging and start pwning it. BTW: This will work for both enduser devices and development board and give us full EL0-EL3 control. Requirements : Any unfused MSM8974,MSM8976,MSM8953,MSM8937,etc. X6, X8 or X9 modem based…
Bring light to the darkness - Reversing a Qualcomm Hexagon QDSP modem for profit - Part 2 Welcome back to the part 2 of my series on Qualcomm modem reversing and exploitation. As we finished with reversing the main function of our interest, the function openlock_cmd @0xC24368C0 which is referred at the pointer table @0xC2435A90, let have a small primer on hexagon to get you started. Little how-to…
Bring light to the darkness - Reversing a Qualcomm Hexagon QDSP modem for profit - Part 1 A friendly and warm welcome to the first part of my Qualcomm reversing and exploitation blog in memory of Fravia’s ORC and frequently requested by my twitter followers. This research wouldn’t have been possible without the great people at 4PDA but also for Zibri who first pointed me to the sierra wireless…
Reversing an Oppo ozip encryption key from encrypted firmware A friendly and warm welcome to the start of my reversing blog in memory of Fravia’s ORC and requested by many real world people at the troopers conference. In this lesson, we are choosing a rather easy target before we’re heading the more advanced targets such as Qualcomm Basebands. For today, we will concentrate on how to reverse…