They own a Volkswagen hybrid car, and had fun changing driving modes on it – so naturally, they decided to reverse-engineer the configuration files responsible. What if the unconditional jump itself has to overwrite bytes? Yes, ladies and gentlemen, we will steal instructions and hide them in the code cave we created. When we branch to our cave, those stolen instructions will be run in the epilogue of our evil function before returning to the scene of the crime. Patching with Ghidra
Complete guide to repairing hot end issues on Creality printers. Our guide on the best filament to use with Creality 3D printers. I’m happy to discuss shortcomings/omissions/improvements to these instructions. If you’re not working on a Creality printer or you’re not willing to share more detail of the output of the printer in earlier steps then I’m unable to help. What output do you get at step 8 in the instructions above? If you don’t get any output from the printer at this point you may have the wrong baud rate or tty. If you can’t see a new tty then now is the time to install the USB to serial port driver.
- The most difficult part of this process, by far, was configuring my firmware for the BLTouch.
- RepRap, Marlin, and Klipper are all very popular choices when it comes to choosing a firmware for your 3D printer.
- Next, launch the firmware in your Arduino IDE using the Marlin.ino file in the folder.
- Repetier is a solid, high-quality firmware with loads of features.
- Loading the wrong firmware into a device might cause this.
Typically, you will find some extra space at the end of a section. You might get lucky and find some space between functions. Why these caves are in a given location can be a real mystery. In the FlashForge Finder’s firmware, the compiler and linker are probably aware of the storage constraints typical of embedded systems and have created a very small binary. Here we have a picture of Ghidra showing the data at the end of a section, full of potentially important junk. There are many different options to upload a stock Android firmware .hex firmware file to the MULTI-Module and to set the correct fuses. This document outlines an approach that uses a USBASP programmer and which is equally compatible with OSX, Windows and Linux operating systems.
In doing this, the initial name we give the function or variable often won’t be accurate, but just renaming functions based on what they do, such as “related_to_temperature? ” will dramatically help in our high-level understanding of the file. It is a good practice to add an identifier to the rename if unsure that the label is 100% accurate such as a question mark. In the first installment of our three-part blog series here we learned how to root the Flashforge Finder 3D printer and acquire its firmware. If you choose to organize the data after the specified types, they make it easier to do so. Here’s an example of a TOBJ file template that can be used in the 010 editor.
Simply repeat the process and ensure that your dongle is secure in its USB port and your bike is in close enough proximity to the dongle so as not to cause connection issues. If the instructions are not clear or sound a bit complicated, please wait a bit more for us to create a Ping-Viewer version that allows you to recover devices.