The WBR-6012 is a wireless SOHO router. It is a low-cost device which functions as an internet gateway for homes and small offices while aiming to be easy to configure and operate. In addition to providing a WiFi access point, the device serves as a 4-port wired router and implements a variety of common SOHO router capabilities such as port forwarding, quality-of-service, web-based administration, a DHCP server, a basic DMZ, and UPnP capabilities.
A security flaw involving hard-coded credentials in LevelOne WBR-6012's web services allows attackers to gain unauthorized access during the first 30 seconds post-boot. Other vulnerabilities can force a reboot, circumventing the initial time restriction for exploitation.The backdoor string can be found at address 0x80100910
80100910 40 6d 21 74 ds "@m!t2K1"
32 4b 31 00
It is referenced by the function located at 0x800b78b0 and is used as shown in the pseudocode below:
if ((SECOND_FROM_BOOT_TIME < 300) &&
(is_equal = strcmp(password,"@m!t2K1")) {
return 1;}
Where 1 is the return value to admin-level access (0 being fail and 3 being user).