3utools Request Shsh

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Here is a description of the protocol that is used when iTunes requests the SHSH certificate from Apple. For details about what this is used for, please see the main article SHSH.

This is a simple HTTP (POST) request and answer. You can retry this via a Telnet session or similar. The destination host is gs.apple.com and runs on the common port 80. The data is plaintext and not encoded in any way. For details about the HTTP protocol itself, please see RFC2616.

  • 1Communication

Communication

Reliable communication to the TSS server is best achieved with the following HTTP header configuration:

  • Proxy-Connection: Keep-Alive
  • Pragma: no-cache
  • Content-Type: text/xml; charset='utf-8'

Press spacebar and type –t, then press spacebar again. Drag your SHS2 blobs file and then press spacebar. Type in –latest-sep—latest-baseband, and then press spacebar. Now, drag your IPSW file. Press enter and wait for your device to restore. For the latest on iOS 13, check out our article right here. What is strange is that the main device page in 3uTools reports all of the information about the phone without fail. So I don't think it is a NAND issue. Samsung Gt-N7100 Hang Logo E:failed to mount/efs Fixed Samsung Galaxy Gt-N7100 Note 2 Hang Logo Fixed Solved Problem Only 2 Min Efs.

The following curl command demonstrates a command-line request to the server:

Action types

Attached to the http://gs.apple.com/TSS/controller URL is commonly ?action=2, which can be discovered when performing an iTunes restore and observing packets sent with a packet sniffer such as Wireshark. However, values other than 2 may produce different server responses, of which all known value/response pairs have been listed below.

  • ?action=0: Performs a 'Tatsu Signing Server HealthCheck', returning an HTML body of 'Server not ready'. This may be a general ping protocol for ensuring the TSS service is online.
  • ?action=2: Common SHSH protocol. See #Status responses for all known server responses.
  • ?action=3: Functionally the same as ?action=2.
  • ?action=5: Generates respCode and respMsg. This response syntax differs slightly from the SHSH protocol. The name 'cpsn' is referenced.

All unlisted action types appear to respond without HTML content, only status.

Sending data (request)

The request is actually a single XML-encoded property list. It contains a dictionary which describes the target iOS version, restore behavior, etc. Some of the required information can be taken from the BuildManifest.plist. BuildManifest contains some info about the firmware version and 'BuildIdentities' dictionary. Inside it you can find two (or more?) build identities. Each of them contains the information which depends on every type of restore ('Erase' or 'Update'). Some information is device-dependent (ECID, nonce) and is received from the device.

Request property list should have these properties:

  • @APTicket: Optional boolean value. If true, the server adds an APTicket to the request.
  • @BBTicket: Optional boolean value. The same for the BBTicket.
  • @UDID: Optional string value. Just request UDID (ex. D9C1F33D-62E0-4D25-8068-F5F46FE80057).
  • @HostPlatformInfo: Optional string value. 'mac' for OS X client, 'windows' for Windows client (can be everything you want).
  • @Locality: Optional string value. Language used for the error response (ex. 'en_US').
  • @VersionInfo: Optional string value. The version of 'libauthinstall' used (ex. 'libauthinstall-391.0.0.1.3'). You can pass any string here.
  • ApBoardID: Integer value. Board ID of the target device. You can take this value from build manifest.
  • ApChipID: Integer value. Chip ID of the target device. You can take this value from build manifest.
  • ApECID: Integer value. ECID of the target device.
  • ApNonce: Data value. The nonce generated by your device.
  • ApProductionMode: Boolean value. Always true (unless your SOC is PROD 0 - Apple only).
  • ApSecurityDomain: Integer value. The use is unknown. You can take this value from build manifest.
  • UniqueBuildID: Optional data value. This is a unique identifier for every build (different even for 'Erase' and 'Update' types of restore). You can take this value from build manifest.

The SHSH request also contains information about files from the IPSW (or restore bundle for PurpleRestore). They can be obtained from the 'build identity' you've chosen in the previous step. Each 'build identity' contains a 'Manifest' dictionary. It's entries look like

They are just copied to the SHSH request, but the 'Info' dictionary is removed.Example of a SHSH request (... values are identical, *** values are different per device):

Receiving data (answer)

The response is a simple HTTP POST response, containing 3 values: STATUS, MESSAGE (a description string) and REQUEST_STRING (only if the request was successful). STATUS contains numeric status, MESSAGE contains an error message on error and 'SUCCESS' string on success and REQUEST_STRING contains response property list encoded as XML.

Status responses

  • STATUS=0&MESSAGE=SUCCESS
    • The request was sent successfully, and a response was returned.
  • STATUS=8&MESSAGE=An internal error occurred.
    • A key contained an unknown name.
  • STATUS=69&MESSAGE=This device isn't eligible for the requested build.
  • STATUS=83&MESSAGE=An internal error occurred.
    • A key was assigned an invalid value type.
  • STATUS=92&MESSAGE=An internal error occurred.
    • The request contained more than 65536 bytes.
  • STATUS=93&MESSAGE=An internal error occurred.
    • The request contained less than 10 bytes.
  • STATUS=94&MESSAGE=This device isn't eligible for the requested build.
    • The specified build is either unsigned or nonexistent.
  • STATUS=98&MESSAGE=An internal error occurred.
    • The XML/PList identification tag is missing or the start of the tag is malformed.
  • STATUS=100&MESSAGE=An internal error occurred.
    • A general XML error was found: the XML/PList version is nonexistent or not '1.0', the end of the XML/PList identification tag is malformed, an unknown or empty tag was found, the root <plist> tag is missing, no keys were found, a value tag contained an invalid type, an unescaped ampersand character was found, two consecutive dash characters were found in a comment, or a tag was found without its counterpart.
  • STATUS=103&MESSAGE=An internal error occurred.
    • Multiple '@' characters were found at the beginning of a key name.
  • STATUS=128&MESSAGE=An internal error occurred.
  • STATUS=131&MESSAGE=An internal error occurred.
    • TBD: Something to do with @APTicket?
  • STATUS=132&MESSAGE=An internal error occurred.
  • STATUS=133&MESSAGE=An internal error occurred.
    • The BbGoldCertId key is missing in a Baseband install.
  • STATUS=511&MESSAGE=No data in the request
  • STATUS=551&MESSAGE=Error occured while importing config packet with cpsn:
  • STATUS=5000&MESSAGE=Invalid Option!

Notes

  • Interestingly, if all you're interested in is the ServerVersion (and a SUCCESS response), sending any one valid Ap-prefixed key will do, like so:
  • In regards to fuzzing and malformed data, the server (as of 2.1.0, at least) seems to have no bounds checking for the ApNonce, or even checking to see if the ApNonce exists. Because the APTicket changes even when specifying an invalid-sized nonce, it is assumed nonces too short are padded while nonces too large are ignored past the 16th character.
  • Most textual characters between tags are ignored. For example, inserting non-bracket text (excluding XML special characters, such as '&') after a <dict> and before the following <key> will have no effect.
  • A version string in the XML/Plist identification tag is required, or a STATUS=100 internal error message will result. Any encoding string provided is ignored and defaulted to (presumably) 'UTF-8'.
  • The DOCTYPE tag is completely ignored. As such, specifying any non-PList DTD has no effect.

3utools Unable To Request Shsh

Other parameters / open questions

Some parameters could have other values. Not all details are known.

  • ApSecurityDomain: Meaning? (Related to SDOM tag)
  • Trusted: What is this for?
  • Full description of the above values for UniqueBuildID, Digest, PartialDigest and BuildString.

PartialDigest

The PartialDigest is structured like so:

The img3 is first stripped of it's code signature (if present) and then passed through SHA1Update. SHA1ResultPartial is then performed. It is purposely not the final resulting SHA1. The reason for this being, when TSS processes the PartialDigest, it performs one more SHA1Update on the hash to include the ECID before doing SHA1Final and creating the SHSH blob.

Code for SHA1ResultPartial:

Code for tss_strip_img3_signature:

3utools Unable To Request Shsh

Digest

3utools Requesting Shsh

Digest is the SHA1 of the stripped img3. They are used instead of PartialDigests for the APTicket since the ticket is already personalized for the ECID and all other tags.

3utools Request Shsh
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3uTools is a program which makes it possible to jailbreak different Apple devices running iOS including the iPhone.

The program's main usefulness comes from the fact that it can flash different versions of Apple's firmware to the phone. Flashing tools can be found in the program under the 'More' tab under 'Firmwares'.

Using 3uTools requires a minimal amount of knowledge as its user interface is clean and easy-to-use. Program features are all laid out in a colorful way which includes quick access to sections including Apps, Photos, Music, Ringtones, Videos, Books, Data, Files and more.

The Apps section of 3uTools can manage installed applications like performing backups, imports and exports. Photo management is also made simple thanks to its clean thumbnail layout when you may also import or export pictures to and from the iOS filesystem.

3utools Request Shsh 2020

Other features of 3uTools include device cleanup, data migration, Open SSH, screen sharing and backup/restore tools. It can also create custom ringtones in various supported iOS formats.

3uTools can sometimes be used as a workaround for the common issue with iTunes that states 'iTunes cannot read the contents of the iPhone'. Instead of using iTunes to access the device, you can use the program to transfer files, photos, videos and more without iTunes.

In conclusion: 3uTools is an excellent collection of free tools for managing, manipulating, jailbreaking and generally improving your iPhone devices.

Note: Users wishing to run 3uTools successfully must already have iTunes installed.

Features and highlights

  • A rapid download speed for any official iOS firmware versions
  • A powerful cloud storage for backing up SHSH
  • Can jailbreak all Apple mobile devices (iOS4.0~9.02) untethered
  • Can jailbreak iOS 10-10.2, iOS 9.2-9.3.3, iOS9-9.0.2, iOS8-8.4, iOS7-7.1.2, iOS6-6.15, iOS5-5.11 and iOS4-4.3.5
  • Use iTunes to backup your important data before jailbreak

3uTools 2.57.022 on 32-bit and 64-bit PCs

This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from iphone tools without restrictions. 3uTools 2.57.022 is available to all software users as a free download for Windows.

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3utools Request Shsh Code

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  2. Freeware iPhone Tools
  3. Major release: 3uTools 2.57
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