# IOS Pentesting Without Jailbreak

> iOS application security testing without requiring a jailbroken device. Use this skill whenever the user needs to pentest iOS apps, analyze mobile applications, perform dynamic instrumentation on iOS, or investigate iOS app security. This includes tasks like obtaining decrypted IPAs, patching entitlements for get_task_allow, enabling Developer Mode, running Frida/objection hooks, or using MobSF for automated analysis. Trigger this skill for any iOS security assessment, mobile app penetration testing, or iOS reverse engineering work.

- Skill: `abelrguezr/ios-pentesting-without-jailbreak` (Agent Skill, multi-file: 5 files)
- Install (CLI): `npx skillmds@latest add abelrguezr/ios-pentesting-without-jailbreak`
- Raw SKILL.md: https://api.skillmd.com/api/skills/abelrguezr/ios-pentesting-without-jailbreak/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: abelrguezr (https://skillmd.com/u/abelrguezr)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/abelrguezr/ios-pentesting-without-jailbreak

---


# iOS Pentesting Without Jailbreak

This skill guides you through modern iOS application security testing without requiring a jailbroken device. The core technique involves using the `get_task_allow` entitlement to enable dynamic instrumentation tools like Frida and Objection.

## Core Concept

Applications signed with the **`get_task_allow` entitlement** allow third-party applications to call `task_for_pid()` to get a task port over the target process, enabling memory access and control. However, Apple's FairPlay DRM protection invalidates the app when the signature changes, so you need to work with decrypted IPAs.

## Workflow Overview

1. **Obtain a decrypted IPA** (from Apple Configurator or jailbreak decryption)
2. **Patch entitlements** to add `get_task_allow`
3. **Re-sign** with a development certificate
4. **Enable Developer Mode** on the device (iOS 16+)
5. **Install** the re-signed IPA
6. **Hook and analyze** with Frida, Objection, or MobSF

---

## Step 1: Obtain Decrypted IPA

### Option A: Get from Apple Configurator (Recommended)

This method works on any iOS device without jailbreak:

1. Install the target app on the iPhone
2. On macOS, install and launch [Apple Configurator](https://apps.apple.com/au/app/apple-configurator/id1037126344?mt=12)
3. Open Terminal and navigate to:
   ```bash
   cd "/Users/[username]/Library/Group Containers/K36BKF7T3D.group.com.apple.configurator/Library/Caches/Assets/TemporaryItems/MobileApps"
   ```
4. In Configurator, select your device → Add + → Apps
5. Configurator downloads the IPA from Apple and attempts to push it
6. The IPA appears in the directory from step 3

### Option B: Decrypt from Jailbroken Device

If you have an old jailbroken device:

1. Install the target app on the jailbroken device
2. Use **Iridium** or **frida-ios-dump** to extract the decrypted IPA
3. Pull the decrypted IPA off the device

**Note:** If the device is too old for the app, modify `Info.plist` to lower the minimum supported version:

```bash
unzip target.ipa -d unzipped/
cd unzipped/Payload/
# Edit AppName.app/Info.plist - change LSMinimumSystemVersion
# Rezip the IPA
```

---

## Step 2: Patch Entitlements & Re-sign

### Using app-signer (Recommended)

`app-signer` provides a user-friendly interface for re-signing:

1. Download and install `app-signer` from GitHub
2. Load your decrypted IPA
3. Enable the `get-task-allow` entitlement
4. Select your development certificate and provisioning profile
5. Export the re-signed IPA

### Using iResign (Alternative)

```bash
# Install iResign
brew install iresign

# Re-sign with get-task-allow
iresign --entitlements get-task-allow --certificate "iPhone Developer" --profile "YourProfile" target.ipa
```

### Using codesign (Manual)

```bash
# Extract the app
unzip target.ipa -d target/
cd target/Payload/

# Create entitlements file
cat > entitlements.xml << 'EOF'
<?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">
<plist version="1.0">
<dict>
    <key>get-task-allow</key>
    <true/>
</dict>
</plist>
EOF

# Sign the app
codesign --force --sign "iPhone Developer" --entitlements entitlements.xml AppName.app

# Re-package
zip -r resigned.ipa AppName.app
```

### Getting Development Certificates

Apple provides **free developer signing profiles** for all accounts through Xcode:

1. Open Xcode → Preferences → Accounts
2. Add your Apple ID
3. Create a new development certificate
4. Generate a provisioning profile for your app

**Important:** Configure the iPhone to trust developer apps:
- Navigate to **Settings → Privacy & Security → Developer Apps**
- Trust the developer certificate

---

## Step 3: Enable Developer Mode (iOS 16+)

Since iOS 16, Apple requires **Developer Mode** for any binary with `get_task_allow` or signed with a development certificate:

1. Install or push **any** developer-signed IPA to the phone
2. Navigate to **Settings → Privacy & Security → Developer Mode**
3. Toggle Developer Mode **ON**
4. The device will reboot
5. After entering the passcode, confirm **Turn On** Developer Mode

**Note:** Developer Mode remains active until disabled or the phone is wiped. This step only needs to be performed once per device.

---

## Step 4: Install the Re-signed IPA

### Using ideviceinstaller

```bash
# Install via USB
ideviceinstaller -i resigned.ipa -w
```

### Using AltStore / SideStore (Recommended for ongoing work)

For routine pentests, AltStore or SideStore are the most practical options:

| Tool | Requirements | Strengths | Limitations |
|------|--------------|-----------|-------------|
| **AltStore 2 / SideStore** | macOS/Windows/Linux companion | Automatic reload over Wi-Fi, works up to iOS 17 | Needs computer on same network, 3-app limit |
| **TrollStore 1/2** | iOS 14 – 15.4.1 (CoreTrust bug) | Permanent signing, no computer needed | Not supported on iOS 15.5+ |

**Setup AltStore:**
1. Install AltServer on your computer
2. Install AltStore on your iPhone via AirDrop or Safari
3. Trust the developer certificate in Settings
4. Drag and drop your re-signed IPA into AltStore
5. AltStore will sign and install it automatically

---

## Step 5: Hook and Analyze

### Using Objection

```bash
# Spawn and attach to the target app
objection -g "com.example.target" explore

# Common commands in the objection console:
android hooking watch pin
ios hooking watch pin
ios module dump
ios view dump
```

### Using Frida

```bash
# Spawn and attach with Frida
frida -U -f com.example.target -l my_script.js --no-pause

# Or attach to running process
frida -U -n "App Name" -l my_script.js
```

**Note:** Recent Frida releases (>=16) automatically handle pointer authentication and iOS 17 mitigations.

### Using MobSF (Automated Analysis)

[MobSF](https://mobsf.github.io/Mobile-Security-Framework-MobSF/) provides automated dynamic analysis with a web UI:

```bash
# Run MobSF in Docker
docker pull opensecurity/mobile-security-framework-mobsf:latest
docker run -p 8000:8000 --privileged \
           -v /var/run/usbmuxd:/var/run/usbmuxd \
           opensecurity/mobile-security-framework-mobsf:latest

# Browse to http://127.0.0.1:8000 and upload your re-signed IPA
```

MobSF will:
- Automatically deploy the binary
- Enable a Frida server inside the app sandbox
- Generate an interactive report with filesystem browser and traffic capture

---

## Important Caveats

### Lockdown Mode (iOS 16+)

**Lockdown Mode** blocks the dynamic linker from loading unsigned or externally signed dynamic libraries:

- Check **Settings → Privacy & Security → Lockdown Mode**
- **Disable** Lockdown Mode before testing
- If enabled, Frida/objection sessions will terminate immediately

### Pointer Authentication (PAC)

- Enforced system-wide on A12+ devices
- Frida >=16 transparently handles PAC stripping
- Keep both `frida-server` and the Python/CLI toolchain up-to-date

### AppSync Unified (Jailbreak Only)

If using a jailbroken device for decryption:
- Install **AppSync Unified** from Cydia to prevent `invalid signature` errors
- This allows installation of apps with modified signatures

---

## Quick Reference Commands

```bash
# Check connected iOS devices
idevice_id -l

# List installed apps
ideviceinstaller -l

# Uninstall an app
ideviceinstaller -u "com.example.target"

# Install IPA
ideviceinstaller -i app.ipa -w

# Check if Developer Mode is enabled (requires ideviceinfo)
ideviceinfo | grep -i developer

# Run Frida server on device (if needed)
scp frida-server /var/root/
ssh root@device "chmod +x /var/root/frida-server && /var/root/frida-server &"
```

---

## Troubleshooting

### "Invalid Signature" Error
- Ensure AppSync Unified is installed (jailbreak)
- Verify the provisioning profile matches the app bundle ID
- Check that the certificate hasn't expired

### App Won't Launch
- Verify Developer Mode is enabled (iOS 16+)
- Check that Lockdown Mode is disabled
- Ensure the device trusts the developer certificate

### Frida/Objection Connection Fails
- Confirm `get_task_allow` is in the entitlements
- Verify Developer Mode is on
- Check that the app is actually running
- Ensure frida-server is running on the device

### "App Not Found" Error
- Double-check the bundle identifier (use `ideviceinstaller -l` to list)
- Ensure the app is installed on the connected device

---

## References

- [Modern iOS Pentesting - No Jailbreak Needed](https://dvuln.com/blog/modern-ios-pentesting-no-jailbreak-needed)
- [Apple Developer - Enabling Developer Mode](https://developer.apple.com/documentation/xcode/enabling-developer-mode-on-a-device)
- [Mobile Security Framework (MobSF)](https://mobsf.github.io/Mobile-Security-Framework-MobSF/)
- [Frida Documentation](https://frida.re/docs/)
- [Objection Documentation](https://github.com/sensepost/objection)