Signing in to Feedly with Reeder 4 on iOS

Reeder 4 works with Feedly but only if the account is already authenticated, it seems unlikely Reeder 4 will see an update to fix this. It is possible to copy the authentication from another session and add it manually to the Keychain. There are options with and without a jailbreak.

Get Feedly Authentication

The authentication can be obtained from the macOS Keychain or an iOS backup.

Option 1: macOS Keychain

Download Reeder 5 for macOS
Sign in to Feedly

Dump Keychain:

security dump-keychain -d login.keychain

It should include something like this:

keychain: "/Users/dave/Library/Keychains/login.keychain-db"
version: 512
class: "genp"
attributes:
    0x00000007 <blob>="com.reederapp.Feedly"
    0x00000008 <blob>=<NULL>
    "acct"<blob>="<account>"
    "cdat"<timedate>=0x32303231313033303135323432315A00  "20211030152421Z\000"
    "crtr"<uint32>=<NULL>
    "cusi"<sint32>=<NULL>
    "desc"<blob>=<NULL>
    "gena"<blob>=<NULL>
    "icmt"<blob>=<NULL>
    "invi"<sint32>=<NULL>
    "mdat"<timedate>=0x32303231313033303135323432315A00  "20211030152421Z\000"
    "nega"<sint32>=<NULL>
    "prot"<blob>=<NULL>
    "scrp"<sint32>=<NULL>
    "svce"<blob>="com.reederapp.Feedly"
    "type"<uint32>=<NULL>
data:
"{"consumerSecret":"","oauthTokenExpiresAt":657905061.65287197,"oauthRefreshToken":"<oauthRefreshToken>:reeder4","oauthToken":"<oauthToken>:reeder4","version":2,"consumerKey":"","oauthTokenSecret":"","oauthVerifier":""}"

Option 2: iOS Backup

Backup iOS device
Install a fork of iOS Backup Extraction:

go install github.com/dnicolson/ios/cmd/irestore@master
Run irestore <device> dumpkeys out.json
The object with com.reederapp.Feedly as the value for svce will contain the base 64 encoded data for the v_Data key

Add Feedly Account

With an Unencrypted Backup

Backup iOS device
Open Manifest.db in the backup which can be found in ~/Library/Application Support/MobileSync/Backup and run the following query:

SELECT fileID FROM "Files" where relativePath = 'Documents/users.json'

The fileID represents the users.json file in the backup, add the following to the JSON array:

{
    "username": "<email>",
    "id": "Feedly\/<account>",
    "serviceId": "Feedly",
    "extId": "<account>",
    "title": "Feedly",
    "sharingOnly": false
}

Restore iOS device with modified backup

With an Encrypted Backup

Backup iOS device
In iMazing copy the document from this path to the Finder: Apps > Reeder > Documents > users.json

Edit users.json by adding the following to the JSON array:

{
    "username": "<email>",
    "id": "Feedly\/<account>",
    "serviceId": "Feedly",
    "extId": "<account>",
    "title": "Feedly",
    "sharingOnly": false
}

Copy users.json back into iMazing replacing the original file
Restore iOS device with modified backup

Add Keychain Item

Option 1: Modifying a Backup

Add a new account to Reeder on an iOS device (in this case Pocket)
Use iMazing to create a backup
Copy the backup from ~/Library/Application Support/iMazing/Backups to ~/Library/Application Support/MobileSync/Backup/
Run irestore <device> dumpkeys keys.json
Edit keys.json replacing the svce and v_Data keys with Feedly Pocket equivalents
Run irestore <device> encryptkeys keys.json keys.plist
In iMazing copy the document from this path to the Finder: File System > KeychainDomain > keychain-backup.plist
Copy the v_Data block from keys.plist to keychain-backup.plist where the v_PersistentRef value matches the _ref value in the original com.reederapp.Pocket object
Copy keychain-backup.plist back into iMazing replacing the original file
Sync backup

Option 2: Theos

Jailbreak iOS 12.5.5 device with Checkra1n
Install Theos https://github.com/theos/theos/wiki/Installation-macOS
Create new Theos instance:

$THEOS/bin/nic.pl

Choose iphone/tool_swift

Enter KeychainAdd as the project name

cd keychainadd

Add the following to the entitlements.plist file:

<key>keychain-access-groups</key>
<array>
    <string>66JC38RDUD.com.reederapp</string>
</array>

Add the following to the main.swift file:

import Foundation

let auth = "{\"consumerSecret\":\"\",\"oauthTokenExpiresAt\":657905061.65287197,\"oauthRefreshToken\":\"<oauthRefreshToken>:reeder4\",\"oauthToken\":\"oauthToken:reeder4\",\"version\":2,\"consumerKey\":\"\",\"oauthTokenSecret\":\"\",\"oauthVerifier\":\"\"}".data(using: .utf8)!

let attributes: [String: Any] = [
    kSecClass as String: kSecClassGenericPassword,
    kSecAttrAccessGroup as String: "66JC38RDUD.com.reederapp",
    kSecAttrAccount as String: "<account>",
    kSecAttrService as String: "com.reederapp.Feedly",
    kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlock,
    kSecValueData as String: auth
]

var result: CFTypeRef?
let status = SecItemAdd(attributes as CFDictionary, &result)
if status == errSecSuccess {
    print("Feedly authentication added to Keychain.")
} else {
    print("Error:", status)
}

Run make
Copy binary to device:

scp .theos/obj/debug/KeychainAdd root@<ip>:/KeychainAdd
Run /KeychainAdd on the device
Optionally remove the binary with rm /KeychainAdd

Option 3: keychaineditor (iOS 13.5+)

Jailbreak iOS 13.5 device with Unc0ver or Checkra1n
Add https://miro92.com/repo/ to Cydia sources
Install Keychain Editor (arm64) 2.5.1

Add 66JC38RDUD.com.reederapp entitlement:

scp root@<ip>:/usr/local/bin/keychaineditor keychaineditor
ldid -e keychaineditor > ent.xml
plutil -insert keychain-access-groups.0 -string 66JC38RDUD.com.reederapp ent.xml
ldid -Sent.xml keychaineditor
scp keychaineditor root@<ip>:/usr/local/bin/keychaineditor

Add Keychain item on the device:

keychaineditor -a --account <account> --service com.reederapp.Feedly --agroup 66JC38RDUD.com.reederapp --data <base64 encoded data>

dnicolson/Reeder-4-and-Feedly.md