D-Link DAP-1360 D1 3.0.0 stock firmware

1. Stock Firmware Analysis

Firmware File

• File: 2017.10.13-15.40_DAP_1360D1_3.0.0_release.bin
• Size: 3,268,486 bytes (3.12 MB)
• Format: Realtek proprietary (cr62 header)

Firmware Structure

Offset	Size	Content
0x000000	0x777	Boot header (cr62 format)
0x000777	varies	LZMA compressed kernel
0x090000	varies	Fake SquashFS (padding)
0x100000	2,219,910	Real SquashFS rootfs

Flash Layout (from /proc/mtd)

Partition	Offset	Size	Description
boot	0x000000	64 KB	RTL-Boot bootloader
MAC	0x010000	64 KB	MAC address storage
config	0x020000	64 KB	NVRAM config
kernel	0x030000	1 MB	Linux kernel
rootfs	0x130000	2.8 MB	SquashFS rootfs
Linux	0x030000	3.8 MB	Combined kernel+rootfs
ALL	0x000000	4 MB	Full flash

2. Stock Rootfs Contents

VERSION

NAME: DAP_1360D1
VERSION: 3.0.0
SYSBUILDTIME: Fri Oct 13 15:48:58 MSK 2017
VENDOR: D-Link Russia
BUGS: support@dlink.ru

Kernel Modules (extracted from rootfs)

• gpiom.ko (38,960 bytes) — GPIO manager for DAP_1360D1 profile
• nf_conntrack_rtsp.ko (10,840 bytes)
• nf_conntrack_sip.ko (24,632 bytes)
• nf_nat_rtsp.ko (8,240 bytes)
• nf_nat_sip.ko (11,160 bytes)

WiFi Driver Status

• RTL8192CD driver is COMPILED INTO THE KERNEL (not a module)
• No separate WiFi .ko file exists
• WiFi driver is proprietary Realtek binary (not open source)

Key Libraries

• libdhal.so (459,160 bytes) — D-Link HAL
• libresident_cli.so (69,552 bytes) — D-Link management
• libnvram.so (4,420 bytes) — NVRAM access
• libiw.so.29 (32,356 bytes) — Wireless extensions
• libcivetweb.so (83,632 bytes) — HTTP server
• libaxtls.so.1.2 (84,796 bytes) — TLS library
• libjansson.so.4.9.0 (52,252 bytes) — JSON library
• libzebra.so.0.0.0 (275,136 bytes) — Routing daemon

Key Binaries (from rootfs)

• /bin/busybox (419,608 bytes) — BusyBox v1.26.2
• /sbin/init — System init
• /usr/sbin/anweb — D-Link web server
• /usr/sbin/resident — D-Link management daemon
• /usr/sbin/iwcontrol — Wireless control
• /usr/sbin/locdns — Local DNS
• /usr/sbin/tinysvcmdns — mDNS

Flash Partitions for DAP-1360

bootloader: 0x000000-0x010000 (64KB, ro)
mac: 0x010000-0x020000 (64KB)
config: 0x020000-0x030000 (64KB)
kernel: 0x030000-0x130000 (1MB)
rootfs: 0x130000-0x400000 (2.8MB)

rsdk-toolchains

rsdk-toolchains

Realtek RSDK cross-compiler toolchains for RTL8196C (rlx4181) and RTL8198C (rlx5281).

Toolchains

Archive	SoC	CPU	Kernel
rsdk-4.6.4-4181-EB-3.10-0.9.33-m32u-20141001.tar.xz	RTL8196C	Lexra LX4181	3.10
rsdk-4.6.4-5281-EB-3.10-0.9.33-m32ub-20141001.tar.xz	RTL8198C/RTL819XD	RLX5281	3.10

Usage

# Extract toolchain
tar xf rsdk-4.6.4-4181-EB-3.10-0.9.33-m32u-20141001.tar.xz

# Set PATH
export PATH=$PATH:$(pwd)/rsdk-4.6.4-4181-EB-3.10-0.9.33-m32u-20141001/bin

# Test
mips-linux-gcc --version

Source

Toolchains originally from Realtek SDK, archived from Vyacheslav-S/openwrt-rtk819.

Build Dependencies (Kernel 3.10 & Tools)

build-assets

add ss/chinadns etc.