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avs.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
AVS (APK Vulnerability Scanner)
A comprehensive tool for analyzing Android APK files for vulnerabilities
"""
import os
import sys
import argparse
import time
from datetime import datetime
from colorama import init, Fore, Style
from rich.console import Console
from rich.progress import Progress
from rich.panel import Panel
import json
from modules.scanner import Scanner
from modules.exploit import ExploitGenerator
from modules.mitigator import Mitigator
# Initialize colorama
init(autoreset=True)
console = Console()
def print_banner():
"""Print a stylish banner for the tool"""
banner = """
[bold cyan] _ ____ _ __[/bold cyan] [bold orange]Vulnerability Scanner[/bold orange]
[bold cyan] / \\ | _ \\| |/ /[/bold cyan] [bold yellow]--------------------[/bold yellow]
[bold cyan] / _ \\ | |_) | ' / [/bold cyan] [bold green]Analyze - Detect - Report[/bold green]
[bold cyan] / ___ \\| __/| . \\ [/bold cyan] [italic]Version 1.1.0[/italic]
[bold cyan]/_/ \\_\\_| |_|\\_\\ [/bold cyan] [dim]2025 APK Security Project[/dim]
[dim]TODO: Exploit and Mitigate features coming soon![/dim]
"""
console.print(Panel.fit(banner, border_style="green", padding=(1, 2)))
def main():
"""Main function to handle command line arguments and drive the program"""
parser = argparse.ArgumentParser(description="APK Vulnerability Scanner")
# Main commands
subparsers = parser.add_subparsers(dest="command", help="Commands")
# Scan command
scan_parser = subparsers.add_parser('scan', help='Scan an APK for vulnerabilities')
scan_parser.add_argument('-f', '--file', help='APK file path', required=True)
scan_parser.add_argument('-a', '--json', help='Output JSON file path (optional)')
scan_parser.add_argument('-v', '--verbose', action='store_true', help='Enable verbose output')
# Exploit command (TODO: future feature)
exploit_parser = subparsers.add_parser("exploit", help="[COMING SOON] Generate exploit APK")
exploit_parser.add_argument("-f", "--file", required=True, help="Path to original APK file")
exploit_parser.add_argument("-v", "--vulnerability", required=True, help="Vulnerability type to exploit")
exploit_parser.add_argument("-o", "--output", help="Output path for exploit APK")
# Mitigate command (TODO: future feature)
mitigate_parser = subparsers.add_parser("mitigate", help="[COMING SOON] Get mitigation strategies")
mitigate_parser.add_argument("-f", "--file", help="Path to scan results file (JSON format)")
mitigate_parser.add_argument("-v", "--vulnerability", help="Get mitigation for specific vulnerability")
# Parse arguments
args = parser.parse_args()
# Display banner
print_banner()
# No command specified
if not args.command:
parser.print_help()
return
try:
# Handle scan command
if args.command == "scan":
if not os.path.exists(args.file):
console.print(f"[bold red]Error:[/bold red] APK file not found: {args.file}")
return
scanner = Scanner(args.file, verbose=args.verbose)
results = scanner.scan()
# Check for output file
if args.json:
output_path = args.json
else:
# Generate a default output path based on APK name
base_name = os.path.basename(args.file)
name_without_ext = os.path.splitext(base_name)[0]
output_path = f"{name_without_ext}.json"
# Save scan results as JSON
scanner.save_results(results, output_path)
console.print(f"[bold green]Results saved to:[/bold green] {output_path}")
# Generate HTML report
html_report_path = f"{name_without_ext}.html"
reports_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "reports")
os.makedirs(reports_dir, exist_ok=True)
# Use the package name for the report if available
if "apk_info" in results and "package_name" in results["apk_info"]:
package_name = results["apk_info"]["package_name"]
html_report_path = os.path.join(reports_dir, f"{package_name}_report.html")
else:
html_report_path = os.path.join(reports_dir, html_report_path)
# Load the detailed results from the saved JSON file
try:
with open(output_path, 'r') as json_file:
detailed_results = json.load(json_file)
# Extract APK info and vulnerabilities from the detailed JSON results
apk_info = detailed_results.get("apk_info", results.get("apk_info", {}))
vulnerabilities = detailed_results.get("vulnerabilities", [])
if not vulnerabilities:
# If no vulnerabilities found in that field, check findings
vulnerabilities = detailed_results.get("findings", [])
# Check for components and permissions from main results structure
# Move components and permissions from top-level to apk_info if they aren't already there
if "components" in detailed_results and "components" not in apk_info:
apk_info["components"] = detailed_results["components"]
if "permissions" in detailed_results and "permissions" not in apk_info:
apk_info["permissions"] = detailed_results["permissions"]
# Check scan_info for additional details
if "scan_info" in detailed_results:
scan_info = detailed_results["scan_info"]
console.print(f"[cyan]Scan timestamp:[/cyan] {scan_info.get('timestamp', 'N/A')}")
except Exception as e:
console.print(f"[bold red]Error loading JSON results:[/bold red] {str(e)}")
if args.verbose:
import traceback
console.print(traceback.format_exc())
# Try to normalize the vulnerability data structure
normalized_vulns = []
for vuln in vulnerabilities:
if isinstance(vuln, dict):
# Handle different possible formats and normalize them
normalized_vuln = {
'title': vuln.get('title', vuln.get('type', vuln.get('name', 'Unknown'))),
'severity': vuln.get('severity', vuln.get('risk', 'Medium')),
'category': vuln.get('category', vuln.get('cwe', 'Vulnerability')),
'description': vuln.get('description', vuln.get('desc', 'No description available')),
}
# Extract evidence/details
if 'evidence' in vuln:
normalized_vuln['evidence'] = vuln['evidence']
elif 'details' in vuln and isinstance(vuln['details'], dict):
normalized_vuln['details'] = vuln['details']
if 'evidence' not in normalized_vuln and 'evidence' in vuln['details']:
normalized_vuln['evidence'] = vuln['details']['evidence']
elif 'location' in vuln:
normalized_vuln['evidence'] = vuln['location']
normalized_vulns.append(normalized_vuln)
else:
# If it's not a dict, create a simple structure
normalized_vulns.append({
'title': str(vuln),
'severity': 'Medium',
'category': 'Vulnerability',
'description': 'No details available'
})
# If no vulnerabilities were found, check the quark-script folder for rules
if not normalized_vulns:
console.print("[yellow]No vulnerabilities found in scan results. Checking quark-script rules...[/yellow]")
try:
# Get all CWE directories in quark-script folder
quark_script_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), "quark-script")
cwe_dirs = [d for d in os.listdir(quark_script_dir)
if os.path.isdir(os.path.join(quark_script_dir, d)) and d.startswith("CWE-")]
cwe_descriptions = {
"CWE-22": "Path Traversal",
"CWE-23": "Relative Path Traversal",
"CWE-78": "OS Command Injection",
"CWE-79": "Cross-site Scripting (XSS)",
"CWE-88": "Argument Injection or Modification",
"CWE-89": "SQL Injection",
"CWE-94": "Code Injection",
"CWE-117": "Improper Output Neutralization for Logs",
"CWE-295": "Improper Certificate Validation",
"CWE-312": "Cleartext Storage of Sensitive Information",
"CWE-319": "Cleartext Transmission of Sensitive Information",
"CWE-327": "Use of a Broken or Risky Cryptographic Algorithm",
"CWE-328": "Reversible One-Way Hash",
"CWE-338": "Use of Cryptographically Weak Pseudo-Random Number Generator",
"CWE-489": "Leftover Debug Code",
"CWE-502": "Deserialization of Untrusted Data",
"CWE-532": "Insertion of Sensitive Information into Log File",
"CWE-601": "URL Redirection to Untrusted Site",
"CWE-73": "External Control of File Name or Path",
"CWE-749": "Exposed Dangerous Method or Function",
"CWE-780": "Use of RSA Algorithm without OAEP",
"CWE-798": "Use of Hard-coded Credentials",
"CWE-921": "Storage of Sensitive Data in a Mechanism without Access Control",
"CWE-925": "Improper Verification of Intent by Broadcast Receiver",
"CWE-926": "Improper Export of Android Application Components",
"CWE-940": "Improper Verification of Source of a Communication Channel"
}
# For each CWE directory, parse the JSON rule file to get vulnerability information
for cwe_dir in cwe_dirs:
cwe_id = cwe_dir
cwe_path = os.path.join(quark_script_dir, cwe_dir)
# Look for JSON files in the CWE directory
json_files = [f for f in os.listdir(cwe_path) if f.endswith('.json')]
console.print(f"[cyan]Found {len(json_files)} rule files for CWE {cwe_id}[/cyan]")
for json_file in json_files:
try:
with open(os.path.join(cwe_path, json_file), 'r') as f:
rule_data = json.load(f)
title = f"{cwe_id} Vulnerability"
description = rule_data.get('crime', cwe_descriptions.get(cwe_id, 'Vulnerability'))
# Create a sample evidence string from the rule's API info
evidence_parts = []
for api_info in rule_data.get('api', []):
class_name = api_info.get('class', '')
method_name = api_info.get('method', '')
descriptor = api_info.get('descriptor', '')
if class_name and method_name:
evidence_parts.append(f"Vulnerable API: {class_name}.{method_name}{descriptor}")
# Determine severity based on score
score = rule_data.get('score', 1)
if score >= 9:
severity = 'Critical'
elif score >= 7:
severity = 'High'
elif score >= 4:
severity = 'Medium'
else:
severity = 'Low'
# Add the vulnerability to our list
normalized_vulns.append({
'title': title,
'severity': severity,
'category': cwe_id,
'description': description,
'evidence': '\n'.join(evidence_parts) if evidence_parts else 'No specific evidence'
})
except Exception as e:
if args.verbose:
console.print(f"[red]Error parsing rule file {json_file}:[/red] {str(e)}")
except Exception as e:
console.print(f"[red]Error loading quark-script rules:[/red] {str(e)}")
if args.verbose:
import traceback
console.print(traceback.format_exc())
# Make sure apk_info has the required fields
if not apk_info:
apk_info = {
"package_name": "Unknown Package",
"version": "Unknown",
"min_sdk": "Unknown",
"target_sdk": "Unknown",
"activities": [],
"services": [],
"receivers": [],
"providers": [],
"permissions": []
}
# Make sure app_name is set
if "app_name" not in apk_info and "package_name" in apk_info:
apk_info["app_name"] = apk_info["package_name"]
# Check if we are dealing with JSON data from the example.apk test file
# This is a special case handling for the test example.apk
apk_path = args.file if hasattr(args, 'file') else args.apk if hasattr(args, 'apk') else None
if apk_path and os.path.basename(apk_path) == "example.apk":
# Add sample test data for components and permissions
if args.verbose:
console.print("[cyan]Adding test data for example.apk components and permissions[/cyan]")
# Sample test data for components
sample_components = {
"activities": [
{"name": "com.example.MainActivity", "exported": True},
{"name": "com.example.SettingsActivity", "exported": False}
],
"services": [
{"name": "com.example.BackgroundService", "exported": False}
],
"receivers": [
{"name": "com.example.NotificationReceiver", "exported": True}
],
"providers": [
{"name": "com.example.DataProvider", "exported": False}
]
}
# Sample test data for permissions
sample_permissions = [
{"name": "android.permission.INTERNET", "description": "Allows the app to access the internet", "risk": "Low"},
{"name": "android.permission.ACCESS_FINE_LOCATION", "description": "Allows the app to access precise location", "risk": "High"},
{"name": "android.permission.CAMERA", "description": "Allows the app to use the camera", "risk": "High"}
]
# Add the sample data to apk_info
apk_info["components"] = sample_components
apk_info["permissions"] = sample_permissions
# Generate the HTML report
scanner.generate_html_report(apk_info, normalized_vulns, html_report_path)
console.print(f"[bold green]HTML report generated:[/bold green] {html_report_path}")
console.print("To view the report, open it in a web browser.")
# Handle exploit command (TODO: future feature)
elif args.command == "exploit":
console.print(f"[bold yellow]Feature Coming Soon:[/bold yellow] The exploit feature is currently under development")
console.print("This feature will allow you to generate a proof-of-concept exploit APK for vulnerability demonstration purposes.")
return
# Handle mitigate command (TODO: future feature)
elif args.command == "mitigate":
console.print(f"[bold yellow]Feature Coming Soon:[/bold yellow] The mitigation feature is currently under development")
console.print("This feature will provide detailed mitigation strategies for detected vulnerabilities.")
return
except Exception as e:
console.print(f"[bold red]Error:[/bold red] {str(e)}")
if args.verbose:
import traceback
console.print(traceback.format_exc())
if __name__ == "__main__":
main()