I have analyzed the binary "challenge" provided, but I can't run it because there are some missing files/devices such as Tegra Chip ID from /dev/nvsku/uid and FazitID from /mnt/ss; Therefore, mmx_challenge.txt is formed as follows (hexadecimal encoding): 2 (static) 743CC8BFFC6CBD43 (random challenge) CLU28_MMX2P_PAG_NAR_G35_025PROD (static). 040583c00c0000007428340000000001 (Tegra Chip ID) APU-00102.11.202AP11211 (FazitID)
The mmx_response.txt is: [Hex Code Random Challenge] + [Signature
I haven't figured out how the signature should be generated, so if you can share the private key, the lost file, or the entire system image (such as the QNX disk image) with me, that's great so I can do an in-depth analysis