feat(epon): F-MDCONU3A — add CLI permission bypass, full command reference, firmware flash protocol#443
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simonebortolin merged 2 commits intohack-gpon:mainfrom Apr 8, 2026
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…, firmware flash protocol Adds extensive reverse-engineering findings for the Free/Iliad F-MDCONU3A (BCM55030 10G-EPON ONU) from static analysis of the v3.2.9 firmware binary: - CLI permission system: pl built-in command bypasses all permission checks, pl omega gives full manufacturing access (level 2) from default UART shell - Complete CLI command tree at all 3 permission levels (level 0: ~60 cmds, level 1: +20, level 2: +25) - Firmware flash protocol (load/rx): raw binary transfer over UART at 57600 baud, TKF container format with trailing CRC32 - Hardware architecture details: Harvard ARC (ICCM/DCCM), firmware structure, FDS personality records - Expanded flash memory map with all 5 regions including FDS/Config - Filled in missing hardware specs (bootloader, system, load addr, RAM, chipset rev) All findings from Ghidra static analysis (2697 functions named). No proprietary documentation was used.
…rence, firmware flash protocol Adds extensive reverse-engineering findings for the Free/Iliad F-MDCONU3A (BCM55030 10G-EPON ONU) from static analysis of the v3.2.9 firmware binary: - CLI permission system: pl built-in command bypasses all permission checks, pl omega gives full manufacturing access (level 2) from default UART shell - Complete CLI command tree at all 3 permission levels with inline descriptions (level 0: ~60 cmds, level 1: +20, level 2: +25) - Full CLI command reference: syntax, arguments, and descriptions for every command, organized by category (system, EPON/MAC, MPCP, memory, stats, firmware/flash, FDS, alarms/debug, multicast, SerDes, MACsec) - PON speed mode encoding table (1G/1G, 2G/1G, 10G/1G, 10G/10G) - Firmware flash protocol (load/rx): raw binary transfer over UART at 57600 baud, TKF container format with trailing CRC32 - Hardware architecture details: Harvard ARC (ICCM/DCCM), firmware structure, FDS personality records - Expanded flash memory map with all 5 regions including FDS/Config - Filled in missing hardware specs (bootloader, system, load addr, RAM, chipset) - Corrected mcast/ command tree (domains/groups/sources/reporters don't exist in the v3.2.9 binary — only igmpinfo and igmpsources are confirmed) - Added serdesTestInit and serdesRx to level 0 serdes/ tree All findings from Ghidra static analysis (2697 functions named). No proprietary documentation was used.
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Preview of the website obtained from the PR: https://b206c9e8.hack-gpon-preview.pages.dev |
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Thanks for the review and merge @simonebortolin ! Great project. |
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Adds extensive reverse-engineering findings for the Free/Iliad F-MDCONU3A
(BCM55030 10G-EPON ONU):
plbuilt-in command bypasses allpermission checks.
pl omegagives full manufacturing access (level 2)from the default UART shell, no password required.
descriptions (~60 level 0 + ~20 level 1 + ~25 level 2 commands).
every command organized by category (system, EPON, MPCP, memory, stats,
firmware, FDS, debug, multicast, SerDes, MACsec).
load/rx): raw binary transfer over UARTat 57600 baud, TKF container format with trailing CRC32.
structure, FDS personality records.
mcast/subtree:domains/groups/sources/reportersdo not exist in the v3.2.9 binary (only
igmpinfoandigmpsources).All findings are from static analysis of the v3.2.9 firmware binary in
Ghidra (2697 functions fully named). No proprietary documentation was used.