diff --git a/scripts/ipa_sign.sh b/scripts/ipa_sign.sh
new file mode 100755
index 0000000..b939abd
--- /dev/null
+++ b/scripts/ipa_sign.sh
@@ -0,0 +1,113 @@
+#!/usr/bin/env bash 
+# 
+# Origin from: https://github.com/RichardBronosky/ota-tools
+# Modified by codeskyblue 2020/06/22
+# Modified by codeskyblue 2020/08/14
+#
+# list identify
+# security find-identity -v -p codesigning
+#
+# mobileprovision file can be found in
+# ~/Library/MobileDevice/Provisioning\ Profiles/*.mobileprovision
+#
+# Thanks:
+# https://github.com/DanTheMan827/ios-app-signer
+#
+# Relative docs:
+# https://www.jianshu.com/p/7d352a648d13
+#
+
+set -o errexit
+set -o pipefail
+
+INSPECT_ONLY=0
+if [[ "$1" == '-i' ]]; then
+	INSPECT_ONLY=1
+	shift
+fi
+
+if [[ "$1" == '-l' ]]; then
+	security find-certificate -a | awk '/^keychain/ {if(k!=$0){print; k=$0;}} /"labl"<blob>=/{sub(".*<blob>=","          "); print}'
+	exit
+fi
+
+if [[ ! ( # any of the following are not true
+		# 1st arg is an existing regular file
+		-f "$1" &&
+		# ...and it has a .ipa extension
+		"${1##*.}" == "ipa" &&
+		# 2nd arg is an existing regular file
+		($INSPECT_ONLY == 1 || -f "$2") &&
+		# ...and it has an .mobileprovision extension
+		($INSPECT_ONLY == 1 || "${2##*.}" == "mobileprovision") &&
+		# 3rd arg is a non-empty string
+		($INSPECT_ONLY == 1 || -n "$3")
+		) ]];
+	then
+		cat << EOF >&2
+	Usage: $(basename "$0") Application.ipa foo/bar.mobileprovision "iPhone Distribution: I can haz code signed"
+	Usage: $(basename "$0") -i Application.ipa
+
+	Options:
+	  -i    Only inspect the package. Do not resign it.
+	  -l    List certificates and exit
+EOF
+	exit;
+fi
+
+## Exit on use of an uninitialized variable
+set -o nounset
+## Exit if any statement returns a non-true return value (non-zero)
+set -o errexit
+## Announce commands
+#set -o xtrace
+
+realpath(){
+	echo "$(cd "$(dirname "$1")"; echo -n "$(pwd)/$(basename "$1")")";
+}
+
+IPA="$(realpath $1)"
+TMP="$(mktemp -d /tmp/resign.$(basename "$IPA" .ipa).XXXXX)"
+IPA_NEW="$(pwd)/$(basename "$IPA" .ipa).resigned.ipa"
+CLEANUP_TEMP=0 # Do not remove this line or "set -o nounset" will error on checks below
+#CLEANUP_TEMP=1 # Uncomment this line if you want this script to clean up after itself
+cd "$TMP"
+[[ $CLEANUP_TEMP -ne 1 ]] && echo "Using temp dir: $TMP"
+unzip -q "$IPA"
+
+plutil -convert xml1 Payload/*.app/Info.plist -o Info.plist
+echo "App has BundleDisplayName '$(/usr/libexec/PlistBuddy -c 'Print :CFBundleDisplayName' Info.plist)' and BundleShortVersionString '$(/usr/libexec/PlistBuddy -c 'Print :CFBundleShortVersionString' Info.plist)'"
+echo "App has BundleIdentifier  '$(/usr/libexec/PlistBuddy -c 'Print :CFBundleIdentifier' Info.plist)' and BundleVersion $(/usr/libexec/PlistBuddy -c 'Print :CFBundleVersion' Info.plist)"
+security cms -D -i Payload/*.app/embedded.mobileprovision 2>/dev/null > mobileprovision.plist
+echo "App has provision         '$(/usr/libexec/PlistBuddy -c "Print :Name" mobileprovision.plist)', which supports '$(/usr/libexec/PlistBuddy -c "Print :Entitlements:application-identifier" mobileprovision.plist)'"
+
+if [[ ! ($INSPECT_ONLY == 1) ]]; then
+	PROVISION="$(realpath "$2")"
+	CERTIFICATE="$3"
+	security cms -D -i "$PROVISION" 2>/dev/null> provision.plist
+	/usr/libexec/PlistBuddy  -x -c 'Print :Entitlements' provision.plist > entitlements.plist
+	echo "Embedding provision       '$(/usr/libexec/PlistBuddy -c "Print :Name" provision.plist)', which supports '$(/usr/libexec/PlistBuddy -c "Print :Entitlements:application-identifier" provision.plist)'"
+
+	# Remove old signatures
+	#rm -rfv Payload/*.app/_CodeSignature Payload/*.app/CodeResources
+
+	# Ref: https://stackoverflow.com/questions/5160863/how-to-re-sign-the-ipa-file
+	# Re-sign embedded frameworks
+
+	# Replace embedded provisioning profile
+	cp "$PROVISION" Payload/*.app/embedded.mobileprovision
+
+	find Payload -type d -name "_CodeSignature" | tail -r | while read -r CODESIGDIR
+	do
+		SIGNFOLDER=$(dirname "$CODESIGDIR")
+		echo "CodeSigning -- $SIGNFOLDER"
+		rm -rf "$CODESIGDIR"
+		/usr/bin/codesign -f -s "$CERTIFICATE" --entitlements entitlements.plist "$SIGNFOLDER"
+	done
+
+	zip -qr "$IPA_NEW" Payload
+	echo "Resigned IPA saved to $IPA_NEW"
+fi
+if [[ $CLEANUP_TEMP -eq 1 ]]; then
+	rm -rf "$TMP"
+fi