I have seen many people patching firmware and selling it on the internet, like this website:

Chipless firmware for printers Epson

I tried to download some original firmware and some patched ones with the same firmware version to compare them, but I couldn’t find any pattern. I created this topic because I think there are smart people here who can help me learn how to do this, at least in the beginning.

 

Thank you.

Edited February 15, 20241 yr by RADIOX

what is frameware???

2 minutes ago, jackyjask said:

what is frameware???

typo, he means firmware.
 

yeah, I know, but people don't even check the topic name before/after posting?....

@RADIOX: I'd start by reading researches about printer vulnerabilities and writeups for pwn2own. For example this: https://doar-e.github.io/blog/2022/06/11/pwn2own-2021-canon-imageclass-mf644cdw-writeup/ and https://www.synacktiv.com/en/publications/the-printer-goes-brrrrr. I'm sure there are plenty more.

I'm definitely not going to pay for a random patched firmware just to satisfy my curiosity. But if you could send me a PM with the files you got, maybe I will find some time to look at it during the weekend. No promises, though.

 

31 minutes ago, kao said:

I'd start by reading researches about printer vulnerabilities and writeups for pwn2own. For example this: https://doar-e.github.io/blog/2022/06/11/pwn2own-2021-canon-imageclass-mf644cdw-writeup/ and https://www.synacktiv.com/en/publications/the-printer-goes-brrrrr. I'm sure there are plenty more.

I'm definitely not going to pay for a random patched firmware just to satisfy my curiosity. But if you could send me a PM with the files you got, maybe I will find some time to look at it during the weekend. No promises, though.

thank you for your valuable answer sir