RomRaider

Fenugrec,
I am trying to decrypt a .dat from a cvt file and get the wrong file. is your decryption utility only for ecm? scode is the same for all automatic transmission files.
Decrypt work well. But unpackdat need add code for const uint8_t pm[]={0x88, 0x34, 0x81};
I changed 82 to 81 and will almost unpack the .dat almost correctly, however it loses a few bytes.
can you help me?

********************
**** Started analyzing 310365UD2A.dat
addr skip @ A000
addr skip @ 60000 // it's mistake
total: 9912 chunks; 1268736 (0x135C00) bytes in PL.

I only tested it on a few ECU repro files.

It's a tool I made for my own use, but decided to publish anyway in case it could be useful to others.
I don't have time or motivation to develop it beyond maybe accepting patches or PRs.

Toyota uses the same algo and different crypto tables for a particular processor.
Here may be a similar approach.

i'm try const uint8_t pm[]={0x88, 0x34, 0x81};
and its so good work for cvt AT crypted files.
You can created unpackdat.c for this cvt, at.
Thank you so much. You are the best!!!

The same situation with decrypting *.dat file fom Denso Diesel ECM YD25DDTi with SH7059 (R51, D40...)
********************
**** Started analyzing 237017X47E.dat
addr skip @ 8000
addr skip @ 17FA00 // it's mistake
addr skip @ 17FB80 // it's mistake
total: 12028 chunks; 1539584 (0x177E00) bytes in PL.

~900 Bytes (FFh) are lose.

Thanks for the bug report. But as I said earlier there's not much I can do about it in my free time except maybe merging a PR or patch.