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Last active September 5, 2024 12:52
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How to re-sign an iOS Application
Here's what you do!
1. Terminal: Unzip the ipa (it's just a zip file after all)
unzip -q App.ipa
1a, You will need to have the entitlements file, this information is needed during signing.
codesign -d --entitlements :- "Payload/App.app"
2. Terminal: This will produce a `Payload/` directory. Remove the existing code signature.
rm -rf Payload/App.app/_CodeSignature
3. Terminal: You'll need a valid provisioning profile. Copy this into the payload.
cp <file>.mobileprovision Payload/App.app/embedded.mobileprovision
Note: If you've had a provisioning profile setup by Xcode 5, they're at the location
~/Library/MobileDevice/Provisioning\ Profiles/
4. Terminal: Now resign the application with your developer certificate.
The certificate name needs to match what's listed within Keychain Access.
/usr/bin/codesign -f -s "<Certificate Name>" --resource-rules Payload/App.app/ResourceRules.plist --entitlements Payload/App.app/Entitlements.plist Payload/App.app
6. Terminal: Rezip the newly signed app
zip -qr App.ipa Payload
7. Xcode: Get your device in the Organizer, and drag the .ipa to the Applications section
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