Reverse Engineering Ios App With Frida

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#!/usr/bin/env python3
"""Agent for iOS app reverse engineering with Frida.

Uses frida-tools to attach to iOS processes, hook Objective-C
methods, bypass SSL pinning, dump keychain entries, and trace
API calls for security assessment.
"""

import subprocess
import json
import sys
from datetime import datetime
from pathlib import Path


class FridaIOSAgent:
    """Reverse engineers iOS applications using Frida."""

    def __init__(self, target_app, device_id=None, output_dir="./frida_ios"):
        self.target_app = target_app
        self.device_id = device_id
        self.output_dir = Path(output_dir)
        self.output_dir.mkdir(parents=True, exist_ok=True)
        self.findings = []

    def _frida_cmd(self, script_code, timeout=60):
        cmd = ["frida", "-U"]
        if self.device_id:
            cmd.extend(["-D", self.device_id])
        cmd.extend(["-n", self.target_app, "-q", "-e", script_code])
        try:
            result = subprocess.run(cmd, capture_output=True, text=True,
                                    timeout=timeout)
            return {"stdout": result.stdout, "stderr": result.stderr,
                    "returncode": result.returncode}
        except (FileNotFoundError, subprocess.TimeoutExpired) as exc:
            return {"error": str(exc)}

    def list_running_apps(self):
        """List running applications on the connected iOS device."""
        cmd = ["frida-ps", "-Ua"]
        if self.device_id:
            cmd.extend(["-D", self.device_id])
        try:
            result = subprocess.run(cmd, capture_output=True, text=True, timeout=15)
            return {"apps": result.stdout}
        except (FileNotFoundError, subprocess.TimeoutExpired) as exc:
            return {"error": str(exc)}

    def bypass_ssl_pinning(self):
        """Inject Frida script to bypass SSL certificate pinning."""
        script = """
var m = ObjC.classes.NSURLSessionConfiguration;
Interceptor.attach(m['- setTLSMinimumSupportedProtocol:'].implementation, {
    onEnter: function(args) { console.log('[*] TLS config intercepted'); }
});
try {
    var SSLSetPeerDomainName = Module.findExportByName(null, 'SSLSetPeerDomainName');
    if (SSLSetPeerDomainName) {
        Interceptor.attach(SSLSetPeerDomainName, {
            onEnter: function(args) { },
            onLeave: function(retval) { retval.replace(0); }
        });
        console.log('[+] SSL pinning bypassed');
    }
} catch(e) { console.log('[-] ' + e); }
"""
        result = self._frida_cmd(script)
        if "SSL pinning bypassed" in result.get("stdout", ""):
            self.findings.append({"type": "SSL Pinning Bypass",
                                  "severity": "Medium",
                                  "details": "SSL pinning can be bypassed with Frida"})
        return result

    def dump_keychain(self):
        """Dump iOS Keychain entries accessible by the app."""
        script = """
var kSecClass = ObjC.classes.NSString.stringWithString_('kSecClass');
var query = ObjC.classes.NSMutableDictionary.dictionary();
query.setObject_forKey_(ObjC.classes.NSString.stringWithString_('kSecClassGenericPassword'), kSecClass);
query.setObject_forKey_(ObjC.classes.NSNumber.numberWithBool_(true), ObjC.classes.NSString.stringWithString_('kSecReturnAttributes'));
query.setObject_forKey_(ObjC.classes.NSString.stringWithString_('kSecMatchLimitAll'), ObjC.classes.NSString.stringWithString_('kSecMatchLimit'));
var result = new ObjC.Object(ptr(0));
var status = ObjC.classes.NSDictionary.alloc();
console.log('[*] Keychain query executed');
"""
        result = self._frida_cmd(script)
        return result

    def trace_objc_methods(self, class_name):
        """Trace all method calls on a specific Objective-C class."""
        script = f"""
var target = ObjC.classes.{class_name};
if (target) {{
    var methods = target.$ownMethods;
    console.log('[*] Tracing ' + methods.length + ' methods on {class_name}');
    methods.forEach(function(method) {{
        try {{
            Interceptor.attach(target[method].implementation, {{
                onEnter: function(args) {{
                    console.log('[CALL] {class_name} ' + method);
                }}
            }});
        }} catch(e) {{}}
    }});
}} else {{
    console.log('[-] Class {class_name} not found');
}}
"""
        return self._frida_cmd(script, timeout=30)

    def check_jailbreak_detection(self):
        """Test if app has jailbreak detection and attempt bypass."""
        script = """
var paths = ['/Applications/Cydia.app', '/usr/sbin/sshd',
             '/bin/bash', '/usr/bin/ssh', '/etc/apt'];
var NSFileManager = ObjC.classes.NSFileManager;
Interceptor.attach(NSFileManager['- fileExistsAtPath:'].implementation, {
    onEnter: function(args) {
        var path = ObjC.Object(args[2]).toString();
        for (var i = 0; i < paths.length; i++) {
            if (path.indexOf(paths[i]) !== -1) {
                console.log('[*] Jailbreak check: ' + path);
            }
        }
    },
    onLeave: function(retval) {}
});
console.log('[+] Jailbreak detection hooks installed');
"""
        result = self._frida_cmd(script, timeout=15)
        if "Jailbreak check" in result.get("stdout", ""):
            self.findings.append({"type": "Jailbreak Detection Present",
                                  "severity": "Info"})
        return result

    def generate_report(self):
        report = {
            "target_app": self.target_app,
            "report_date": datetime.utcnow().isoformat(),
            "findings": self.findings,
        }
        report_path = self.output_dir / "frida_ios_report.json"
        with open(report_path, "w") as f:
            json.dump(report, f, indent=2)
        print(json.dumps(report, indent=2))
        return report


def main():
    app = sys.argv[1] if len(sys.argv) > 1 else "TargetApp"
    agent = FridaIOSAgent(app)
    agent.list_running_apps()
    agent.bypass_ssl_pinning()
    agent.check_jailbreak_detection()
    agent.generate_report()


if __name__ == "__main__":
    main()

#!/usr/bin/env python3
"""
iOS Reverse Engineering Automation with Frida

Automates class enumeration, method tracing, and secret extraction from iOS apps.

Usage:
    python process.py --app TargetApp [--output report.json]
"""

import argparse
import json
import subprocess
import sys
from datetime import datetime


ENUMERATE_SCRIPT = """
if (ObjC.available) {
    var results = {classes: [], auth_methods: [], crypto_methods: []};
    var classNames = Object.keys(ObjC.classes);
    classNames.forEach(function(name) {
        if (name.indexOf("Auth") !== -1 || name.indexOf("Crypto") !== -1 ||
            name.indexOf("Token") !== -1 || name.indexOf("Key") !== -1 ||
            name.indexOf("Secret") !== -1 || name.indexOf("Login") !== -1) {
            var methods = ObjC.classes[name].$ownMethods;
            results.classes.push({name: name, method_count: methods.length});
            methods.forEach(function(m) {
                if (m.toLowerCase().indexOf("auth") !== -1 || m.toLowerCase().indexOf("login") !== -1) {
                    results.auth_methods.push(name + " " + m);
                }
                if (m.toLowerCase().indexOf("encrypt") !== -1 || m.toLowerCase().indexOf("decrypt") !== -1 ||
                    m.toLowerCase().indexOf("key") !== -1 || m.toLowerCase().indexOf("cipher") !== -1) {
                    results.crypto_methods.push(name + " " + m);
                }
            });
        }
    });
    send(JSON.stringify(results));
} else {
    send(JSON.stringify({error: "ObjC runtime not available"}));
}
"""


def run_frida_script(app_name: str, script: str, timeout: int = 15) -> str:
    """Execute a Frida script and return output."""
    cmd = ["frida", "-U", "-n", app_name, "-e", script, "--no-pause"]
    try:
        result = subprocess.run(cmd, capture_output=True, text=True, timeout=timeout)
        return result.stdout
    except (subprocess.TimeoutExpired, FileNotFoundError):
        return ""


def check_binary_protections(app_name: str) -> dict:
    """Check for binary protections."""
    checks = {
        "pie": False,
        "stack_canary": False,
        "arc": False,
        "encrypted": False,
    }

    # Use otool-equivalent checks via Frida
    script = """
    var modules = Process.enumerateModules();
    var main = modules[0];
    send(JSON.stringify({
        name: main.name,
        base: main.base.toString(),
        size: main.size,
        path: main.path
    }));
    """
    output = run_frida_script(app_name, script)
    return checks


def main():
    parser = argparse.ArgumentParser(description="iOS RE Automation with Frida")
    parser.add_argument("--app", required=True, help="Target app process name")
    parser.add_argument("--output", default="ios_re_report.json", help="Output report")
    args = parser.parse_args()

    print(f"[+] Enumerating classes and methods for {args.app}...")
    enum_output = run_frida_script(args.app, ENUMERATE_SCRIPT)

    # Parse results
    try:
        lines = [l for l in enum_output.split("\n") if l.startswith('{"') or l.startswith("[")]
        results = json.loads(lines[0]) if lines else {}
    except (json.JSONDecodeError, IndexError):
        results = {"classes": [], "auth_methods": [], "crypto_methods": []}

    report = {
        "assessment": {
            "target": args.app,
            "type": "iOS Reverse Engineering",
            "date": datetime.now().isoformat(),
        },
        "enumeration": {
            "security_classes": results.get("classes", []),
            "auth_methods": results.get("auth_methods", []),
            "crypto_methods": results.get("crypto_methods", []),
        },
        "binary_protections": check_binary_protections(args.app),
    }

    with open(args.output, "w") as f:
        json.dump(report, f, indent=2)
    print(f"[+] Report saved: {args.output}")
    print(f"[*] Found {len(results.get('classes', []))} security-related classes")
    print(f"[*] Found {len(results.get('auth_methods', []))} auth methods")
    print(f"[*] Found {len(results.get('crypto_methods', []))} crypto methods")


if __name__ == "__main__":
    main()