Even to root your Galaxy device with Magisk, you need to patch “AP_xxx.tar” via Magisk. There are also certain cases where the manufacturer modifies the signatures and format of a file system to adapt it to their devices or to obfuscate it to make analysis more difficult.
- firmware headers.
- I did some research about 3D printer firmware and found out what it all means, so I wrote an article about it to assist other people.
- These software also offer some handy searching tools (search, go to, find, etc.) through which you can find the desired data.
- When editing the ELF, we used the linker script to describe a new section in flash.
- It is important to always have all mains power cables disconnected from the device while being connected via serial or even while the case of the device is opened home.
The same information can also be found in the processor memory map from the device datasheet. All of this indicates that we have not loaded the file at the right address. Had we specified the correct address when loading the file in Ghidra, at least some of the strings would have a reference pointing at them if not all.
If you have found proper location of a section within BIN file, remember to add base address to the file position before inserting to the command
Since everyone is compiling new applications for the Espressif chip now, merely reprogramming the serial flash on the board should be easy, right? ESP needs to be put into programming mode or flash mode before the firmware can be uploaded. This is done by connecting GPIO0 pin to GND while the chip is booting. Esptool uses the serial interface to communicate with your device. On Windows these interfaces are named COM1, COM2, etc. and on Linux they are named /dev/ttyUSB0, /dev/ttyUSB1, etc. Before using esptool, make sure you know which serial port your programming adapter is connected to.