ASUS RT-5300 Router Reconnaissance

https://wikidevi.com/wiki/ASUS_RT-AC5300

https://www.asus.com/Networking/RT-AC5300/

CPU: Broadcom BCM47094 @1.4GHz SoC (ARM Cortex A9)
WLAN: 2x 4T4R AC BCM4366 + 1x 4T4R N BCM4366 @800MHz
SoC (ARM Cortex A7), 4x4 MU-MIMO, 40/80MHz, QAM-1024
DualBand, NitroQAM, 5GHz (2x 2165Mbps), 2.4GHz (1000Mbps)

https://asuswrt.lostrealm.ca/

https://github.com/RMerl/asuswrt-merlin/wiki

Source code:

https://github.com/RMerl/asuswrt-merlin.ng

https://github.com/RMerl/asuswrt-merlin/wiki/Compiling-from-source-using-a-Debian-based-Linux-Distribution

http://www.apache-asp.org/index.html

https://vanquishsecurity.net/media/files/asus/ASUS_RT_AC5300_Manual.pdf

https://github.com/RMerl/asuswrt-merlin/wiki/Entware

Entware is a modern alternative to Optware. Originally designed for OpenWRT, it is also usable by other firmware platforms such as DD-WRT or Tomato.
You can also set this up on your Asuswrt-Merlin based router.

ASUS Linux Commands

cat /proc/cpuinfo
Processor : ARMv7 Processor rev 0 (v7l)
processor : 0
BogoMIPS : 2798.38

processor : 1
BogoMIPS : 2798.38

Features : swp half thumb fastmult edsp
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc09
CPU revision : 0

Hardware : Northstar Prototype
Revision : 0000
Serial : 0000000000000000

uname -m

armv7l

uname -a

Linux RT-AC5300 2.6.36.4brcmarm #1 SMP PREEMPT Tue Sep 11 18:52:37 CST 2018 armv7l GNU/Linux

openssl s_client -connect 192.168.2.1:8443

CONNECTED(00000003)
depth=0 C = US, CN = 192.168.2.1
verify error:num=18:self signed certificate
verify return:1
depth=0 C = US, CN = 192.168.2.1
verify return:1

Certificate chain
0 s:/C=US/CN=192.168.2.1
i:/C=US/CN=192.168.2.1

subject=/C=US/CN=192.168.2.1
issuer=/C=US/CN=192.168.2.1

SSL handshake has read 1364 bytes and written 444 bytes

New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES128-GCM-SHA256
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES128-GCM-SHA256