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: Golden Retriever & New Friends	ADAP	0004000000030C00
ESHOP://50010000007870.PEAALL000000	EUR	Crush 3D	ACRP	0004000000040400
ESHOP://50010000008009.PEAALL000000	EUR	Resident Evil Revelations	ABRE	000400000005EE00
ESHOP://50010000008123.J00101Z00095	JPN	Rhythm Kaitou R: Koutei Napoleon no Isan	ARTJ	0004000000078100
ESHOP://50010000008404.PEAALL000000	EUR	Mario & Sonic at the London 2012 Olympic Games	ACMP	0004000000054900
ESHOP://50010000008447.J00101Z00094	JPN	Biohazard Revelations	ABRJ	0004000000053B00
ESHOP://50010000008449.J00101Z00082	JPN	Itsu no Ma ni Koukan Nikki	JFRJ	0004000000051600
ESHOP://50010000008561	USA	Swapnote	JFRE	0004000000051700
ESHOP://50010000008647.J00101Z00096	JPN	Metal Gear Solid Snake Eater 3D	AMGJ	000400000007A000
ESHOP://50010000008648.J00101Z00097	JPN	Theatrythm Final Fantasy	ATHJ	0004000000078200
ESHOP://50010000008782.PEAALL000000	EUR	Metal Gear Solid Snake Eater 3D	AMGE	0004000000082400
ESHOP://50010000008842.PEAALL000000	EUR	Rhythm Thief And The Emperor's Treasure	ARTP	000400000006DA00
ESHOP://50010000009084.J00101Z00121	JPN	Hatsune Miku And Future Stars: Project Mirai	AM9J	0004000000048000
ESHOP://50010000009102.J00101Z00106	JPN	Denpa Ningen no RPG	JD8J	0004000000077E00
ESHOP://50010000009161.J00101Z00118	JPN	The Rolling Western	JAMJ	0004000000059B00
ESHOP://50010000009261	USA	Dillon's Rolling Western	JAME	000400000007C400
ESHOP://50010000009401.J00101Z00120	JPN	Kingdom Hearts 3D Nintendo Direct 2012.2.22 Video	JZ8J	0004000000092E00
ESHOP://50010000009403.J00101Z00119	JPN	Dragon Quest Monsters: Terry no Wonderland 3D Nintendo Direct 2012.2.22 Video	JZ7J	0004000000092F00
ESHOP://50010000009575.PEAALL000000	EUR	Kid Icarus: Of Myths And Monsters (Virtual Console)	RBLP	0004000000069500
ESHOP://50010000009846	USA	Ketzal's Corridors	JELE	0004000000083800
ESHOP://50010000010434	USA	New Super Mario Bros. 2 Trailer

• 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.

Requests with the following parameters will always return XML unless the header "Accept: application/json" is used, in which case JSON will be returned.

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 yields the same results as 2 but uses the img-eshop image server. 4 yields similar results as 3 but includes VC titles and updates, lacks image links for /titles and lacks release dates, prices and whether eShop and web sales are possible. For 4, links are given in both MP4 and Moflex formats for movies. Values greater than 4 or less than 1 are invalid. Defaults to 2 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	Scrolling news on the top screen	shop_id is required
/samurai/ws/region/directory/(long long unsigned int) and /samurai/ws/region/directory/~(string)	Collections, like sales	(none)
/samurai/ws/region/title/content id	Returns information about the title, more verbose than /titles.	(none)
/samurai/ws/region/demo/content id	Returns information about a demo. Content ID is available in the main game's /title entry.	(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/platforms	Returns a list of human-readable platform names and their corresponding platform 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.

Path	Description	Parameters
/ninja/ws/region/title/content id/ec_info	Contains information about the title. Such as title id, content size, and if available, the 9.6 crypto seed	(none)
/ninja/ws/titles/id_pair	Provides the content id for the given title id, or vice versa.	title_id[] or ns_uid[] is required.
/ninja/ws/region/tax_locations	Provides the tax location ID	postal_code is required.
/ninja/ws/service_hosts	Provides CCIF and Samurai servers	country and shop_id is required.
/ninja/ws/country/region	Various eshop related information for a given region	(none)
/ninja/ws/country/region/replenish_amounts	Provides the amounts of money you can replenish to your account.	(none)

Trusted Root CAs

The eShop application itself uses a RootCertChain for all HTTPS requests, all of the trusted root CAs are the following default ones:

• CertID 0x3
• CertID 0x6
• CertID 0x7
• CertID 0x8
• CertID 0x9
• CertID 0xA

Server changes following the November 2, 2015, maintenance

Pre-v10.0 eShop used an URL like this: "%s/samurai/ws/%s/title/%llu/other_purchased?shop_id=1&lang=%s&_type=json". That URL was removed with v10.0. That URL was requested when trying to load eShop app-pages. Following the maintenance mentioned above, this page was removed from the server, which broke pre-v10.0 eShop app whenever it tried to access that page.

URL changes between 9.7.0-25 and 10.0.0-27 are (green = add, red = remove):

%s/ninja/ws/%s/titles/online_prices?title%%5B%%5D=%s&lang=%s&include_coupon=true&shop_id=1&_type=json

%s/ninja/ws/%s/coupon/!check?shop_id=1&_type=json

%s/ninja/ws/my/owned_coupons?ns_uid=%llu&shop_id=1&_type=json

%s/ninja/ws/my/owned_coupons?shop_id=1&_type=json

%s/ninja/ws/my/parental_control/!put?shop_id=1&_type=json

%s/ninja/ws/%s/title/%llu/prepurchase_info?%s=%s&shop_id=1&_type=json

%s/samurai/ws/%s/coupon/%llu/titles?lang=%s&limit=%u&offset=%u&shop_id=1&_type=json

%s/ninja/ws/my/auto_billing/plans?limit=%u&offset=%u&shop_id=1&_type=json

%s/ninja/ws/%s/titles/online_prices?title%%5B%%5D=%s&lang=%s&include_coupon=true&coupon_id=%llu&shop_id=1&_type=json

%s/ninja/ws/my/auto_billing/%014llu/!cancel?shop_id=1&_type=json

%s/samurai/ws/%s/title/%llu/other_purchased?shop_id=1&lang=%s&_type=json

%s/samurai/movie/%s/%s/%014llu/moflex

New3DS

CheckNew3DS is called in two functions. This is only used for disabling UI button(s) for downloading New3DS titles when running on Old3DS. For example, on a New3DS patching a CheckNew3DS func-call with <retval=0>, results in the download button on the app page being grayed-out for a New3DS-only title.

Attempting to download a New3DS-only title with an Old3DS eShop account(even with a New3DS using an Old3DS account), results in the ninja server(specifically the "prepurchase_info" page) returning an error. HTTP 400 is returned with the following json reply:

000000: 7b 22 65 72 72 6f 72 22 3a 7b 22 63 6f 64 65 22  {"error":{"code"
000010: 3a 22 33 31 35 36 22 2c 22 6d 65 73 73 61 67 65  :"3156","message
000020: 22 3a 22 54 68 69 73 20 70 72 6f 64 75 63 74 20  ":"This product 
000030: 63 61 6e 6e 6f 74 20 62 65 20 70 75 72 63 68 61  cannot be purcha
000040: 73 65 64 5c 6e 6f 72 20 72 65 64 65 65 6d 65 64  sed\nor redeemed
000050: 20 66 6f 72 20 75 73 65 20 6f 6e 20 74 68 69 73   for use on this
000060: 20 73 79 73 74 65 6d 2e 5c 6e 5c 6e 49 66 20 74   system.\n\nIf t
000070: 68 65 20 70 72 6f 62 6c 65 6d 20 70 65 72 73 69  he problem persi
000080: 73 74 73 2c 20 70 6c 65 61 73 65 5c 6e 6d 61 6b  sts, please\nmak
000090: 65 20 6e 6f 74 65 20 6f 66 20 74 68 65 20 65 72  e note of the er
0000a0: 72 6f 72 20 63 6f 64 65 20 61 6e 64 5c 6e 76 69  ror code and\nvi
0000b0: 73 69 74 20 73 75 70 70 6f 72 74 2e 6e 69 6e 74  sit support.nint
0000c0: 65 6e 64 6f 2e 63 6f 6d 2e 22 7d 7d              endo.com."}}

TitleID checks

There's titleID checks in the system eShop application code for "Pokémon Omega Ruby". This appears to be used with UI-related code, unknown why.