Workflow: IPA Decryption & Extraction
App Store binaries ship FairPlay-encrypted. Static analysis requires a decrypted Mach-O.
Prereqs
Jailbroken device with Frida server, SSH, and the app installed & launched at least once.
Steps
# Option A — frida-ios-dump
git clone https://github.com/AloneMonkey/frida-ios-dump
cd frida-ios-dump
python3 dump.py <bundle_id> # yields <AppName>.ipa (decrypted)
# Option B — manual pull
ssh root@<device> "find /var/containers/Bundle/Application -maxdepth 3 -name '*.app'"
scp -r root@<device>:/var/containers/Bundle/Application/<UUID>/App.app .
# Decrypt each Mach-O slice using bagbak or Clutch (iOS ≤ 14) or frida-ios-dump (iOS 15+).Verify Decryption
otool -l App.app/App | grep -A4 LC_ENCRYPTION_INFO
# cryptid 0 = decrypted; cryptid 1 = still encryptedPost-decryption Parallel Analysis
Run concurrently:
class-dump -H App.app/App -o headers/strings -a App.app/App > strings.txtotool -L App.app/Appandotool -hv App.app/App- Load into Hopper/Ghidra/IDA for function-level review.
Non-jailbroken Alternative — Frida Gadget
objection patchipa --source app.ipa --codesign-signature "Apple Development: <you>"
ios-deploy --bundle Payload/App.app
frida-ps -Uai # Gadget shows as attachableDoes not decrypt FairPlay, but lets Frida attach on stock devices for dev/enterprise builds.