Search found 7 matches

by bfroemel
Fri Sep 14, 2007 3:48 pm
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

I assume you refer to the menu-entry in templat0.rom based on Phoenix BIOS Editor's presentation of the deconstructed BIOS? Looking at the raw TEMPLAT0.ROM here it is mostly a series of lookup tables with pointers into STRINGS0 and, I would guess, associated Token numbers. There are no strings in t...
by bfroemel
Fri Sep 14, 2007 2:39 pm
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

What does yours show for that same range? It's there, but at a different offset: (0438) [0002] (043B) [0000] (0441) [0000] (0444) [0001] (0450) [0003] (0453) [0000] (0456) [0002] (0459) [3FFF] (045C) [000F] (045F) [003F] (0462) [0000] (0465) [0000] So within a module the order is probably kept, but...
by bfroemel
Thu Sep 13, 2007 12:40 pm
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

Looks good - so what's happening @6CE8h:0E6FE4313h on your system? You obviously have the better tools (IDA?) and skills to disassemble bios code :)
by bfroemel
Thu Sep 13, 2007 11:36 am
Forum: In-depth High-tech BIOS section
Topic: PHOENIX BIOS EDITOR FULL DOWNLOAD
Replies: 2
Views: 23461

Search for phoenix in Intel's download center - it's version 2.1, full license and should be perfectly legal (at least for Compal product owners).
by bfroemel
Thu Sep 13, 2007 11:15 am
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

I think we could help each other on this, and record our progress here for others to share. What do you think? Unfortunately I can't invest too much time into this - but I'll follow the thread and give (hopefully helpful) comments. By the way: did you discover something like an "ESID" ? At least in...
by bfroemel
Thu Sep 13, 2007 12:27 am
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

A few things which could help you: Although I update the CMOS checksum in registers 0x2E-0x2F Isn't taking the nvram module itself care of the checksum? * Checksums over the NVRAM contents are managed by this driver. In case of a * bad checksum, reads and writes return -EIO. The checksum can be init...
by bfroemel
Wed Sep 12, 2007 10:49 pm
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 100202

Good work! I looked into directly editing the NVRAM too and also encountered this second checksum - maybe, if you spend some time with this tool here: http://www.filewatcher.com/b/ftp/ftp.supermicro.com/utility.0.0.html you discover where this second checksum is located. I've chosen the rather stupi...