EShop

The Nintendo 3DS eShop was added in the June 2011 update for JP/EUR/USA.

From here, you can download Virtual Console games, 3D Classics, DSiware software, view screenshots, and 3D trailers for upcoming 3DS titles.

While eShop is loading, eShop will use command NIMS:CheckSysupdateAvailableSOAP. If a system update is available where title installation for system titles still needs finalized (or when the updated titles were not downloaded at all), eShop will then display the "system update is available" message.

The eShop application uses command AMNet:FinishInstallToMedia to finalize the SD title install (if the whole title is downloaded while eShop is still running), however, before using that command the eShop application also uses AMNet:FinishInstallToMedia to finalize installing all system titles (from system updates).

eShop QR Codes

eShop QR Codes can be scanned with the camera, allowing one to quickly navigate to the desired eShop title with just two clicks. The QR Codes themselves is a simple text/url QR, started with "ESHOP://" string followed by a decimal eShop content link id(same IDs used internally by eShop for all content) and then some special data, delimited by a dot symbol, which can be ommited.

In order for the QR-code string data to be valid for eShop, it must begin with "ESHOP://5", with the first ID being all decimal.

QR Code source	Region	Title	Serial	Title ID
ESHOP://50010000000201.PEAALL000000	EUR	Nintendogs & Cats Demo	ADA/B/C	0004000200030c01
ESHOP://50010000007870.PEAALL000000	EUR	Crush 3D	A??P	00040002
ESHOP://50010000008009.PEAALL000000	EUR	Resident Evil Revelations Demo	ABRE	000400020005ee01
ESHOP://50010000008123.J00101Z00095	JPN	Rhythm Thief And The Emperor's Treasure Demo	ARTJ	00040002
ESHOP://50010000008404.PEAALL000000	EUR	Mario And Sonic At The London 2012 Olympic Games Demo	ACMP [1]	00040002
ESHOP://50010000008447.J00101Z00094	JPN	Resident Evil Revelations Demo	ABRJ	00040002
ESHOP://50010000008449.J00101Z00082	JPN	Swapnote	JFRJ	?
ESHOP://50010000008561	USA	Swapnote	JFRE	0004000000051700
ESHOP://50010000008647.J00101Z00096	JPN	Metal Gear Solid Snake Eater 3D Demo	AMGJ	0004000200048101
ESHOP://50010000008648.J00101Z00097	JPN	Theatrythm Final Fantasy	ATHJ	?
ESHOP://50010000008782.PEAALL000000	EUR	Metal Gear Solid Snake Eater 3D Demo	AMGE	0004000200082401
ESHOP://50010000008842.PEAALL000000	EUR	Rhythm Thief And The Emperor's Treasure Demo	ARTP [2]	00040002
ESHOP://50010000009084.J00101Z00121	JPN	Hatsune Miku And Future Stars: Project Mirai Demo	AM9J	00040002
ESHOP://50010000009102.J00101Z00106	JPN	Denpa Ningen RPG	JD8J	?
ESHOP://50010000009161.J00101Z00118	JPN	Dillon's Rolling Western	JAMJ	00040000
ESHOP://50010000009261	USA	Dillon's Rolling Western	JAME?	00040000
ESHOP://50010000009401.J00101Z00120	JPN	Kingdom Hearts 3D Video Download	JZ8J	?
ESHOP://50010000009403.J00101Z00119	JPN	DQM 3D Video Download	JZ7J	?
ESHOP://50010000009575.PEAALL000000	EUR	Kid Icarus: Of Myths And Monsters (Virtual Console)	?	?
ESHOP://50010000009846	USA	Ketzal's Corridors	?	?

• New QR Code for Japanese "Photos with Super Mario" has a different code string: ESHOP://50010000013120.J00108Z00001.CD588EAE95A3A68D15C647DA2AC0945FD88F70AB8A31149E51C4B05FB927B0B8

• There is a link in the Japanese eShop [http://www.nintendo.co.jp/3ds/eshop/qrCode.html?####] where you can replace the #### with the Japanese eShop title's serial and you will get it's QR code. (i.e. http://www.nintendo.co.jp/3ds/eshop/qrCode.html?jcaj will get you the pushmo QR code)

• You could use Google's Chart API to create a QR code from the codes above: https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=ESHOP (replace the ESHOP text with the ESHOP:// link from one of the above)

NS eShop application parameters

This section describes the 0x1C-byte structure stored at the application parameters from APT:StartApplication, under the 0x300-byte buffer listed there.

Offset	Size	Description
0x0	0x4	Unknown, usually 0x3?
0x4	0x4	Unknown, usually 0x0?
0x8	0x8	u64 binary eShop content ID, same ID from the first string in eShop QR-codes except in binary form.
0x10	0x10	This is the last string from the QR-code(if any), no NUL-termination.

ExtData

The ExtData File System for eShop is as follows:

root
├── icon
├── boss
│   └── TIGER100.tmp
└── user

File	Details	Size	Firmware Introduced	Plain text
icon	Duplicate from application ExeFS. Always image 00000002	0x36C0 Bytes	2.0.0-2	Download_EUR
TIGER100.tmp	Always image 00000003.	0xCE47 bytes (varies?)	2.0.0-2

Music

The eShop pulls its music from a static, region-specific link in a format similar to the following:

https:// a248.e.akamai.net/f/248/103046/10m/npdl.c.app.nintendowifi.net/p01/nsa/CtfKXACbUPl8s7lk/BGM1/US_BGM1 , where region is one of the primary system regions (JP, US, EU, KR, etc.) Support also exists for 'BGM2', but this seems to be unused. The music is held in a BOSS container.

The format consists of a brief XML header describing the audio (including the date it was set as the main eShop theme, loop times, size, etc) followed by a raw AAC stream. Tools such as FFmpeg can handle rebuilding this stream with ADTS headers for proper time info and such.

The Home Menu uses nearly the same format for the Theme Shop's background music.

URLs

eShop uses the following domains over HTTPS:

• cp3s-auth.c.shop.nintendowifi.net
• a248.e.akamai.net
• ninja.ctr.shop.nintendo.net
• samurai.ctr.shop.nintendo.net
• ccif.ctr.shop.nintendo.net
• eou.c.shop.nintendowifi.net

These domains are used by NIM:

• nus.c.shop.nintendowifi.net
• ecs.c.shop.nintendowifi.net
• cas.c.shop.nintendowifi.net

ninja.ctr.shop.nintendo.net and samurai.ctr.shop.nintendo.net contain the bulk of the eShop information.

Common Parameters to ninja and samurai

For every request to the ninja and samurai servers, three parameters are always sent, though are not necessarily required:

Parameter	Required	Description	Type	Normal value
shop_id	depends on the URL, usually no	Describes which eShop instance should be used. 1 indicates the 3DS eShop, 2 indicates the Wii U eShop. 3 seems to yield the same results as 2. Values greater than 3 or less than 1 are invalid. Defaults to 2 or 3 if not given.	unsigned integer	1
lang	no	Describes the language. Seems to be an ISO 639-1 code in lower case. Every eShop region has a default language that is used if this parameter is not given. Some regions have multiple languages, such as CA (en and fr).	string (two characters)	depends on region and eShop settings; for US: en
_type	no	Describes whether the client wants to receive JSON or XML. This parameter seems actually unused and the servers always return XML.	string	json

samurai

samurai.ctr.shop.nintendo.net (samurai) provides metadata about titles. The samurai server provides the backend for the eShop title search.

Common parameters described above can always be sent.

Path	Description	Parameters
/samurai/ws/region/titles	Fetches the title list, containing the content id (not the 3DS title id), the product code and the localized title name	All of these are optional. genre[]: genre ID (unsigned int) publisher[]: publisher ID (unsigned int) price_min: minimum price in region currency (signed int) price_max: maximum price in region currency (signed int) video_format: "moflex" freeword: keyword(s?) to look for (string) limit: maximum results offset: results to skip sort: one of "new", "popular" or "score" release_date_before: date/time title must have been released before (UNIX timestamp prefixed by +) release_date_after: date/time title must have been released after (UNIX timestamp prefixed by -)
/samurai/ws/region/news	eShop news section	(none)
/samurai/ws/region/telops	Some kind of news?	shop_id is required
/samurai/ws/region/directory/(long long unsigned int) and /samurai/ws/region/directory/~(string)	(unknown)	(unknown)
/samurai/ws/region/title/content id	Returns information about the title, more verbose than /titles.	(none)
/samurai/ws/region/contents	Seems identical to /titles.	see /titles
/samurai/ws/region/genres	Returns a list of human-readable genre names and their corresponding genre id.	(none)
/samurai/ws/region/publishers	Returns a list of human-readable publisher names and their corresponding publisher id.	(none)
/samurai/ws/region/title/content id/aocs	Returns a list of add-on contents/downloadable content and prices in eShop region currency.	(none)

ninja

ninja.ctr.shop.nintendo.net (ninja) contains the seeds for the new 9.6 crypto, pricing information and handles actions that require authentication, such as purchases. Authentication information seems to be obtained from the act:u sysmodule and works through OAuth2.