From b4688f336b7ba07c4f8e6be87998c7a6507e3007 Mon Sep 17 00:00:00 2001
From: Kablersalat <crt@adastra7.net>
Date: Fri, 6 Jun 2025 18:33:59 +0200
Subject: commiting to insanity

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 research/firmware-strings/README.md | 148 ++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 research/firmware-strings/README.md

(limited to 'research/firmware-strings/README.md')

diff --git a/research/firmware-strings/README.md b/research/firmware-strings/README.md
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+# Firmware extracts with string command
+
+HARMONY.txt (firmware for a speaker/the harmony box, seems to be compressed or something only getting garbage from strings)
+
+HARMONY-TRIO.txt (firmware for speaker with built in clock, unlike harmony seems to actually return partially usable data)
+
+SIGMA-MASTER-CLOCK.txt is from the masterclock (kinda the heart of the system that shedules bing bongs etc)
+
+What i scower for : 
+- `CHK` or `CHK BAD`
+- `checksum`, `crc`, `fletcher`, `xor`, `sum`, `verify`
+- `traitement` (French for processing)
+- `REP STREAM`, `REPIN`, `REPACK`, `REPOUT`
+- `opcode`, `frame`, `trame` (French for frame)
+- `F_` or `process_` function prefixes
+- `validate`, `verify`, `compare`, `assert`
+- `0x%04x`, `%04X`, `%04lx`, `%08X`, `%d/%d`, `%lx` (supposedly common checksum formatting)
+
+what claude ai told me to also search : 
+CHK or checksum
+Direct checksum indicators
+F_controle_CHK_protocole
+Entry point for protocol checksum check
+UI_i_lg_trame
+Likely the message length used in calc
+calcule, reçu, BAD
+May show checksum comparison logic
+F_charge_A_vars
+Handles file loading with checksum
+%04x, %08X, %d/%d, %lx
+
+
+
+## Notes things from SIGMA-MASTER-CLOCK
+
+```
+*** failed ***
+TEST DE PRODUCTION      
+Microquartz Sigma  BODET
+none
+%d.%d.%d.%d
+## Warning: gatewayip needed but not set
+bad length %d < %d
+invalid RARP header
+len bad %d < %d
+checksum bad
+ ICMP Host Redirect to
+ ```
+
+Seems to decompress its actual image and start the thing not really what i need but interesting none the less : 
+```
+gzip compressed
+%s %s %s (%s)
+   Data Size:    %d Bytes = 
+   Load Address: %08x
+   Entry Point:  %08x
+   Contents:
+   Image %d: %8ld Bytes = 
+Image at %08lX:
+   Verifying Checksum ... 
+   Bad Data CRC
+## Checking Image at %08lx ...
+   Bad Magic Number
+   Bad Header Checksum
+Booting ...             
+## Booting image at %08lx ...
+Unsupported Architecture 0x%x
+Standalone Application
+Wrong Image Type for %s command
+   XIP %s ... 
+   Uncompressing %s ... 
+GUNZIP ERROR - must RESET board to recover
+Unimplemented compression type %d
+autostart
+Can't boot image type %d
+bootargs
+## Transferring control to NetBSD stage-2 loader (at address %08lx) ...
+## Transferring control to RTEMS (at address %08lx) ...
+bootm
+bootm   - boot application image from memory
+[addr [arg ...]]
+    - boot application image stored in memory
+passing arguments 'arg ...'; when booting a Linux kernel,
+'arg' can be the address of an initrd image
+boot    - boot default, i.e., run 'bootcmd'
+bootd
+bootd   - boot default, i.e., run 'bootcmd'
+iminfo
+iminfo  - print header information for application image
+addr [addr ...]
+    - print header information for application image starting at
+      address 'addr' in memory; this includes verification of the
+      image contents (magic number, header and payload checksums)
+imls
+imls    - list all images found in flash
+    - Prints information about all images found at sector
+      boundaries in flash.
+List of available devices:
+%-8s %08x %c%c%c 
+coninfo
+coninfo - print console devices and information
+Reset RTC...
+Writting Error RTC... %d
+RTC is not initialized !!!
+```
+
+
+ive seen d of d in other files too
+```
+[%d;%dm
+ -> 
+the -s option is meaningful only when verifying checksums
+the -w option is meaningful only when verifying checksums
+only one argument may be specified when using -c
+Invalid format
+%s: OK
+%s: FAILED
+WARNING: %d of %d computed checksums did NOT match
+Couldnt close file %s
+%s  %s
+invalid mode `%s'
+parents
+f-i:i-f
+mv: overwrite `%s'? 
+unable to rename `%s'
+non-
+cannot remove `%s'
+interactive
+force
+fiRr
+cannot remove `.' or `..'
+no files
+```
+
+probably not what we need but could be (might be dhcp though)
+```
+couldn't read on raw listening socket -- ignoring
+message too short, ignoring
+Truncated packet
+unrelated/bogus packet
+bad IP header checksum, ignoring
+packet with bad UDP checksum received, ignoring
+received bogus message (bad magic) -- ignoring
+oooooh!!! got some!
+```
+^ oooooh got some ! (dont think that be written in a netbsd package but who knows)
+
+
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