The IPAYou should already have an .ipa file, put this into a folder.
CertificateOn the Apple Account click the Certificates, Identifiers & Profiles button. On the left under the heading Certificates and click Production.
Click on your chosen one and download to the folder with the .ipa.
Go to this folder and double click the certificate.
Open Key Chain and click My Certificates in the bottom left, find the certificate called iOS Distribution and expand.
Click both of the items (the header and the private key) so both are selected, right click and 'Export 2 items', put these into the folder created earlier and double click it to save to Key Chain. (if someone could write in comments why this is necessary to help xcode that would be great), strange but i needed to do this.
Provisioning ProfileOn the Apple Account click the Certificates, Identifiers & Profiles button.
On the left under the heading Provisioning Profiles click Distribution.
Click the Active one and download to the folder with the .ipa. If there isn't one there click the plus and create one for your specific requirements.
plistOn the Apple Account click the Certificates, Identifiers & Profiles button.
On the left under the heading Identifiers, click the one you want and then open a code editor and drop this in.
Then update the two values for “PREFIX.yourappBundleID” in the following code taken from the top of the identifiers page (if it doesn't work i removed the prefix and it worked) and save it as 'entitlements.plist' in the folder we created before.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
xCodeOpen xCode and click on the xCode menu->Preferences->Accounts. Click the plus bottom left and then sign into the Apple Account. Click Manage Certificates and at the bottom its should have 'iOS Enterprise Distribution'.
iResignDownload iReSign and run it on the Mac.
Line 1 browse to the .ipa file.
Line 2 link to the mobile provision file we downloaded.
Line 3 is the plist file we created. In the dropdown select your profile from the Xcode account you added earlier.
Now click iReSign and it should save you a new IPA file. This should hopefully work.
Command LineIf we want to resign a simple iOS app the first thing we’ll need it’s an Apple certificate installed in our Keychain and a Provisioning Profile linked to it. For this process we’ll need to have Xcode in our Mac. Use the files we downloaded in the tutorial above.
We’ll start decompressing the .ipa file, for that we open a terminal in the path where we have stored the .ipa and we execute the following command.
Next we create the entitlements from the .mobileprovision file we created in the Apple developer portal.
unzip -q filename.ipa
With this we’ll have everything we need to resign the app.
/usr/libexec/PlistBuddy -x -c "print :Entitlements " /dev/stdin <<< $(security cms -D -i ./name.mobileprovision) > entitlements.plist
Before resigning we remove the data from the current signature:
and replace the embedded mobile provision with our own one
rm -rf "Payload/AppName.app/_CodeSignature"
There’s only the signing left to be done using the previously generated entitlements :
cp ./name.mobileprovision embedded.mobileprovision
mv embedded.mobileprovision “Payload/AppName.app/"
That being done we can compress the app again:
/usr/bin/codesign -fv -s “CommonNameOfCertificate" "Payload/AppName.app/AppName" --entitlements entitlements.plist
And we’ll have a ready to install .ipa.
zip -qr ResignedApp.ipa Payload