SLDLS

This server is responsable for dynamic background and game api url information.

The endpoint seems like is supports more games than BF, rather than the original one (which used Dynamic_background.php) which serves a similar purpose.

The game checks if this server is HTTPS and the CA certificate matches the one of the game server.

URL: https://api-sl.bfww.gumi.sg/

Request: /dls

Type: GET

The DLS request accepts and returns a JSON object called “SREE”, the format of the request and the response, therefore, it’s the same, what changes is the encrypted content of the SREE.

Request and response format:

{
	"SREE": "content"
}

The content of SREE is encrypted with AES-CBC and the content is then encoded with Base64.

AES key: 7410958164354871

AES IV: Bfw4encrypedPass

The content of a decrypted SREE as follows:

{
	(todo...)
}

Name	Description	Optional	Possible values
game	Game name	no	string
resource	CDN server where resources will be downloaded	no	string
mstv	Game version	no	number
gumilive	Login server	no	string
bgimage	Background image to show during login	no	string
force	Forces the game to show a message and then exit	yes	true/false
force_msg	Message to show to force close the game	yes	string