IQSOFT - John Brice Oktatóközpont
Azure tanfolyami dömping júniusban! 20532, 20533, MSITIL

Secure desktop application development in C#

Tanfolyam célja

As a developer, your duty is to write bulletproof code. However...

What if we told you that despite all of your efforts, the code you have been writing your entire career is full of weaknesses you never knew existed? What if, as you are reading this, hackers were trying to break into your code? How likely would they be to succeed?

This combined course will change the way you look at code. A hands-on training during which we will teach you all of the attackers’ tricks and how to mitigate them, leaving you with no other feeling than the desire to know more.

It is your choice to be ahead of the pack, and be seen as a game changer in the fight against cybercrime.

  •     Understand basic concepts of security, IT security and secure coding
  •     Learn about typical coding mistakes and how to avoid them
  •     Learn to use various security features of the .NET development environment
  •     Have a practical understanding of cryptography
  •     Understand security concepts of Web services
  •     Learn about XML security
  •     Learn about JSON security
  •     Learn about denial of service attacks and protections
  •     Get sources and further readings on secure coding practices
Tematika
  •     IT security and secure coding
  •     Common coding errors and vulnerabilities
  •     .NET security architecture and services
  •     Practical cryptography
  •     Desktop application security
  •     Security of Web services
  •     Data access security in .NET
  •     Windows Communication Foundation security
  •     Denial of service
  •     Principles of security and secure coding
  •     Knowledge sources

1. IT security and secure coding

  •         Nature of security
  •         What is risk?
  •         IT security vs. secure coding
  •         From vulnerabilities to botnets and cybercrime
    •             Nature of security flaws
    •             Reasons of difficulty
    •             From an infected computer to targeted attacks
  •         Classification of security flaws
    •             Landwehr’s taxonomy
    •             The Seven Pernicious Kingdoms
    •             OWASP Top Ten 2017

    Common coding errors and vulnerabilities

  •         Input validation
    •             Input validation concepts
    •             Injection
      •                 Injection principles
    •             SQL injection
      •                 Exercise – SQL Injection
      •                 Exercise – SQL injection
      •                 Typical SQL Injection attack methods
      •                 Blind and time-based SQL injection
      •                 SQL injection protection methods
    •             Other injection flaws
      •                 Command injection
      •                 Command injection exercise – starting Netcat
    •             Case study – ImageMagick
    •             Integer problems
      •                 Representation of negative integers
      •                 Integer overflow
      •                 Exercise IntOverflow
      •                 What is the value of Math.Abs(int.MinValue)?
      •                 Integer problem – best practices
      •                 Case study – Integer overflow in .NET
    •             Path traversal vulnerability
      •                 Path traversal mitigation
      •                 Case study – Insufficient URL validation in LastPass
    •             Unvalidated redirects and forwards
    •             Unsafe native calls
      •                 Unsafe native calls
      •                 Exercise – Unsafe unmanaged code
    •             Unsafe reflection
      •                 Implementation of a command dispatcher
      •                 Unsafe reflection – spot the bug!
      •                 Mitigation of unsafe reflection
    •             Log forging
      •                 Some other typical problems with log files

2. .NET security architecture and services

  •         .NET architecture
  •         Code Access Security
    •             Full and partial trust
    •             Evidence classes
    •             Permissions
    •             Code access permission classes
    •             Deriving permissions from evidence
    •             Defining custom permissions
    •             .NET runtime permission checking
    •             The Stack Walk
    •             Effects of Assert()
    •             Class and method-level declarative permission
    •             Imperative (programmatic) permission checking
    •             Exercise – sandboxing .NET code
    •             Using transparency attributes
    •             Allow partially trusted callers
    •             Exercise – using transparency attributes
  •         Role-based security
    •             Principal-based authorization
    •             Exercise – adding role-based authorization
    •             Impersonation
  •     Practical cryptography
    •         Cryptosystems
      •             Elements of a cryptosystem
    •         Symmetric-key cryptography
      •             Providing confidentiality with symmetric cryptography
      •             Symmetric encryption algorithms
      •             Block ciphers – modes of operation
    •         Other cryptographic algorithms
      •             Hash or message digest
      •             Hash algorithms
      •             SHAttered
      •             Message Authentication Code (MAC)
      •             Providing integrity and authenticity with a symmetric key
    •         Asymmetric (public-key) cryptography
      •             Providing confidentiality with public-key encryption
      •             Rule of thumb – possession of private key
      •             The RSA algorithm
        •                 Introduction to RSA algorithm
        •                 Encrypting with RSA
        •                 Combining symmetric and asymmetric algorithms
        •                 Digital signing with RSA
  •         Public Key Infrastructure (PKI)
    •             Man-in-the-Middle (MitM) attack
    •             Digital certificates against MitM attack
    •             Certificate Authorities in Public Key Infrastructure
    •             X.509 digital certificate

    Desktop application security

  •         Windows Forms
    •             Introduction to Windows Forms
    •             Using TextBoxes to ask for passwords
    •             Best practices for password input
    •             Exercise – TextBoxPassword
    •             Other security considerations
    •             CVE-2015-1673 – user-assisted arbitrary code execution
  •         Windows Presentation Foundation
    •             Introduction to WPF
    •             Extensible Application Markup Language (XAML)
    •             WPF deployment models
  •         Common security issues with desktop .NET applications
    •             Resource hijacking in WPF applications
    •             Exercise – LibHijack
  •         Protecting .NET code
    •             Protecting .NET code
    •             Strong naming
    •             Exercise – Using strong names
    •             Authenticode
    •             Exercise – Using Authenticode

    Security of Web services

  •         SOAP security
    •             SOAP - Simple Object Access Protocol
    •             Transport layer security
    •             Message level security
  •         XML security
    •             Introduction
    •             XML parsing
    •             XML injection
      •                 (Ab)using CDATA to store XSS payload in XML
      •                 Exercise – XML injection
    •             Abusing XML Entity
      •                 XML Entity introduction
      •                 XML bomb
      •                 Exercise – XML bomb
      •                 XML external entity attack (XXE) – resource inclusion
      •                 XML external entity attack – URL invocation
      •                 XML external entity attack – parameter entities
      •                 Exercise – XXE attack
      •                 Preventing entity-related attacks
    •             Case study – XXE in Google Toolbar
  •         JSON security
    •             JSON parsing
    •             Embedding JSON server-side
    •             JSON injection
    •             JSON hijacking
    •             Case study – XSS via spoofed JSON element

 3. Data access security in .NET

  •             Working with databases
  •             ADO.NET
    •                 Prepared statements in ADO.NET
    •                 Securing connection strings
  •             Entity Framework
    •                 Entity Framework security
    •                 Object exposure with Entity Framework

        Windows Communication Foundation security

  •             Introduction to WCF
  •             WCF architecture and security considerations
    •                 WCF architecture
    •                 Security considerations for the hosting environment
    •                 WCF security terminology
    •                 Transport layer security – client authentication
    •                 Authorization options

        Common coding errors and vulnerabilities

  •             Improper use of security features
    •                 Typical problems related to the use of security features
    •                 Insecure randomness
      •                     Random numbers and cryptography
      •                     Cryptographically-strong PRNGs
      •                     Hardware-based TRNGs
      •                     Weak PRNGs in .NET
    •                 Password management
      •                     Exercise – Weakness of hashed passwords
      •                     Password management and storage
      •                     Brute forcing
      •                     Special purpose hash algorithms for password storage
      •                     Argon2 and PBKDF2 implementations in .NET
      •                     bcrypt and scrypt implementations in .NET
      •                     Case study – the Ashley Madison data breach
      •                     Typical mistakes in password management
      •                     Exercise – Hard coded passwords
    •                 Insufficient anti-automation
      •                     Captcha
      •                     Captcha weaknesses
    •                 Accessibility modifiers
      •                     Accessing private fields with reflection in .NET
      •                     Exercise Reflection – Accessing private fields with reflection
  •             Improper error and exception handling
    •                 Typical problems with error and exception handling
    •                 Empty catch block
    •                 Overly broad catch
    •                 Using multi-catch
    •                 Catching NullReferenceException
    •                 Exception handling – spot the bug!
    •                 Exercise – Error handling
    •                 Exercise – Information leakage through error reporting
  •             Time and state problems
    •                 Concurrency and threading
    •                 Concurrency in .NET
    •                 Omitted synchronization – spot the bug!
    •                 Exercise – Omitted synchronization
    •                 Incorrect granularity – spot the bug!
    •                 Exercise – Incorrect granularity
    •                 Deadlocks
    •                 Avoiding deadlocks
    •                 Exercise – Avoiding deadlocks
    •                 Lock statement
    •                 Serialization errors (TOCTTOU)
    •                 TOCTTOU example
    •                 Exercise – Race condition
    •                 Exercise – Exploiting the race condition
  •             Code quality problems
    •                 Dangers arising from poor code quality
    •                 Poor code quality – spot the bug!
    •                 Unreleased resources
    •                 Misspelled method – spot the bug!
    •                 Exercise – Misspelled method
    •                 Serialization – spot the bug!
    •                 Exercise – Serializable sensitive
    •                 Private arrays – spot the bug!
    •                 Private arrays – typed field returned from a public method
    •                 Class not sealed – object hijacking
    •                 Exercise – Object hijacking
    •                 Immutable string – spot the bug!
    •                 Exercise – Immutable strings
    •                 Using SecureString
    •                 Exercise – Using SecureString

        Denial of service

  •             DoS introduction
  •             Asymmetric DoS
  •             Case study – Denial-of-service against ICDs
    •                 Evaluation of St. Jude Medical pacemakers / ICDs
    •                 Denial-of-service: battery drain
    •                 SSL/TLS renegotiation DoS
  •             Regular expression DoS (ReDoS)
    •                 Exercise ReDoS
    •                 ReDoS mitigation
    •                 Case Study – ReDos in Stack Exchange
  •             Hashtable collision attack
    •                 Using hashtables to store inputs
    •                 Hashtable collision
    •                 Hashtable collision in ASP.NET

        Principles of security and secure coding

  •             Matt Bishop’s principles of robust programming
  •             The security principles of Saltzer and Schroeder

        Knowledge sources

  •             Secure coding sources – a starter kit
  •             Vulnerability databases
  •             .NET secure coding guidelines at MSDN
  •             .NET secure coding cheat sheets
  •             Recommended books – .NET and ASP.NET

 

Kinek ajánljuk
Előfeltételek

Advanced C# development

Kapcsolódó tanfolyamok