Cyber101 - Getting into Cyber as a Student

Who are we?

Graduated from UMD in '19 with a BS in CS and '21 with a ME in Cyber Security. Involved in CSEC and helped create challenges for UMDCTF-2019/20/21.

Held various cyber security roles:

  • Software Security Engineer at RunSafe Security
  • Software Security Engineer for the Department of Defense

Mike - WittsEnd2

Software Engineer - C, Python, & Web

Reverse Engineer/Binary Exploitation

Hobbies: CTFs/Dev Projects, Entrepreneurship, Baseball, Music, Stocks

 

How to reach me

#include <stdlib.h>
typedef struct Contact {
    char discord[15];
    char twitter[15];
    char github[10];
} Contact;

int main() {
    Contact *contactInfo = malloc(sizeof(struct Contact));
    contactInfo->discord = "WittsEnd2#9274";
    contactInfo->twitter = "@RagnarSecurity"
    contactInfo->github = "WittsEnd2";
    contactInfo->blog = "https://ragnarsecurity.medium.com/"
    return 0;
}

These are my own views/thoughts and do not reflect the views/thoughts of my employer.

What is Cyber Security?

What it is

Cyber security refers to the body of technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access. Cyber security may also be referred to as information technology security.

  • Policies (clearance, compartmentalization)
  • Patch Tuesday
  • Vulnerability scanning
  • Threat/network scanning
  • Research
    • Vulnerabilities
    • Exploits
  • Protocols, cryptography, and obfuscation

What it is not

https://hackertyper.net

Genres (topics) in Cyber

*What you will see frequently in CSEC*

Reverse Engineering

Understanding how something works, whether its software, hardware, or anything else.  

Ghidra

IDA Pro

Binary Ninja

Radare2

ptrace/strace

Sysinternals Suite

AnyRun

Cuckoo Sandbox

@malwareunicorn

Tools (Software):

Exploit

Taking advantage of an unintended bugs features

Binary - 

   Buffer Overflow

   String Format

   Return Oriented Programming (ROP)

   Timing Attacks

   Side channel

Web -

    SQL Injections

    XSS/CSRF

Can require some RE to do successfully.

Examples

Whats the exploit here?

Digital Forensics

Data Analysis - Aggregated Data investigations

Disk - Storage Drive forensics

Memory - RAM/Snapshot forensics

Network - IP traffic forensics

Mobile/Embedded - Niche technology based forensics

Popular Areas

Forensics is uncovering evidence and artifacts like a detective solving a crime scene.  

Criminal Investigations

Malware / Intrusion Detection

Volatility

Autopsy

Hardware

Embedded Systems - Internet of Things

Software Defined Radio - RF Hacking

Hardware Hacks - Side channel
 

Tools/Resources:

  • GNU Radio
  • Hak5
  • HackRF
  • Architecture Manuals
  • Baremetal & 
  • etc

Hardware covers a variety of topics, and as Software folk we generally don't get to play with this stuff. 

Cryptography

Secure communications in an adversarial setting. In CTFs, usually breaking uses of crypto or broken crypto. (there's a difference!)

 

Broadly speaking, unless you become an expert in Cryptography, uses of crypto are limited to consulting and designing with secure crypto primitives. (secure primitives does not imply secure communications!)

data = 'CAPTURETHEFLAG'
key = 'A'
encrypted = ''.join([chr(ord(x) ^ ord(key)) for x in data])
print(encrypted)
# '\x02\x00\x11\x15\x14\x13\x04\x15\t\x04\x07\r\x00\x06'

Networks/Web/Cloud

  • Web applications 
  • Industrial Control Systems
  • Open Source Intelligence
  • Cloud Application Security

 

Both offensive and defensive, multiple subjects (like exploitation and cryptography) can apply to this field as well.

 

Tools: 

  • Burp Suite
  • WireShark
  • OWASP Zap
  • Snort

Policies & Procedures

Policies & Procedures

The Business Side of Cyber Security. This defines the steps to defend an organization from a cyber attack. 

  • Confidentiality, integrity, availability
  • Security Models
    • Biba Model
    • Chinese Wall Model
  • Threat Models - Quantitative vs Qualitative
  • Access Controls 
    • Password Policies
    • Identification Policies
  • Risk Scoring

Other Topics You May Find

  • Malware Analysis
  • Crypto Currencies & Blockchain
  • Machine Learning & AI 
  • Endpoint Security
  • IOT Security (different than hardware security)

Roles/Positions in Cyber

Information Security Analyst

Utilizes tools (both closed and open source) to defend an organization's information technology system from unauthorized access.

  • Creating firewall rules 
  • Defending endpoints from threats
  • Monitoring network traffic & scan for vulnerabilities
  • Developing scripts/applications to automate intrusion detection/prevention
  • Developing Security Playbooks

Lots of certifications/classes (CISSP, CISA, Security+, etc).

Penetration Tester

Evaluating an organization's security using tools and methodologies hackers (ethical hacking). 

  • Using software (and sometimes hardware) to determine exploitability of an organization
  • Figuring out how deep you can go (and if you can achieve persistent access). 
  • Writing reports to organizations about your findings. 

 

You are not developing the tools as much as using them.

Certifications: 

  • Certified Ethical Hacker (easy)
  • OSCP/OSCE (Medium/Hard)
  • LPT from EC Council (Medium) 

Security Researcher

Finding new vulnerabilities/zero-days in existing system.

  • Technology Companies
    • Google Project Zero
  • Academia
  • Government - LTS 
  • Startup Companies

This is one of the most difficult jobs to do as it requires in-depth technical knowledge. 

Security Software Engineer

Developing new technologies to protect information security systems.

Diverse skill-set:

  • Low-level: C/C++ and Rust
  • Web: JavaScript Python 
  • Databases: SQL/NoSQL
  • Network Based: Scripting

Technology companies, government, and startups generally are looking to hire for this kind of talent 

Non-Technical Role (Management/Auditors)

Develop, implement, and audit policies and best practices to protect an organization's technology. Extremely broad set of responsibilities.

  • Authentication policies (e.g. single sign-on/multifactor authentication)  
  • Implementing Security Models
    • Zero-Trust Architecture
    • Access Control Systems
  • Working with technological workforce to balance productivity with security
  • Budget - convincing executives for more money

Specialized Roles

  • Digital Forensics Analyst
  • Cryptography Researcher
  • Bug Bounty
  • Hardware Security Engineer/Researcher

How do you get started?

How you feel right now

Keep participating in CSEC!

Evaluate Goals

  • Have specific goals in mind 
    • Can be narrow or broad
  • What do you want to improve on?
  • Why do you want that as your goal?
  • What outcomes are you hoping to achieve? 

Create A Schedule

  • Devote several hours per week to practicing
  • Make sure there are no distractions
  • Why Create A Schedule? 
    • School & Personal Life takes a lot of time
    • You will need to organize your schedule when working

Learn 

  • Utilize websites and resources designed for structured learning
  • Listen to security podcasts and follow security researchers
  • Watch YouTube Videos and blog posts
  • Reddit & Twitter
    • Will discuss specific later

Compete in CTFS

  • CTF Competitions put your skills to the test
    • Time limit
    • Never before seen challenges
  • Different designs for CTFs
    • Many different categories
    • Can be specialized 
      • Attack/Defense
      • HackASat
  • Learning opportunity
  • UMDCSEC Comp Team Website

Compete in CTFS

  • CTFS aren't always easy
    • You will spend lots of time feeling like you're struggling to solve a challenge
  • READ WRITEUPS!
    • You will learn why you weren't able to solve the challenge
      • Especially the ones where you spend hours getting no where

Apply Security to Projects

  • Break software that you build
  • Use your skills with CSEC
    • Website/Infrastructure
    • Machine Learning/Data
  • Use hackathons as a way to build cybersecurity projects
    • Build a set of vulnerable code
    • Build tools to help you solve CTF challenges (or penetration testing)

Talk to Professors

  • Learn about the research they do and some suggestions regarding research
  • Participate in research activities
    • Breakerspace
  • This can lead to graduate school

Open Source Projects

  • Open Source Community is always looking for contributors!
  • Join Discord channels and see how you can get involved. 
    • Examples: Pwntools, Radare2 

Generating Ideas for Projects

  • How can someone break this software?
  • What am I having difficulty with and how can I make it easier?
  • What do people seem to be having difficulty figuring out? 
  • How can I protect this better? 
  • Why did someone implement this and how can I make it better?

Find a Group of Freinds

  • UMDCSEC is a great group of friends interested in Cyber
  • Ask questions and share what you are doing
  • Ask other friends not in the club if they want to join you with cyber-related projects/events

Resources

General Resources

(The good stuff)

Reddit:
  - r/cybersecurity
  - r/ReverseEngineering
  - r/ghidra
  - r/hacking
  - r/HowToHack
  - r/humblebundles
  - r/memoryforensics
  - r/RTLSDR
  - r/securityCTF
  - r/netsec
  - r/netsecstudents
  - r/LiveOverflow
  - r/linux
  - r/linuxmemes
  - r/linuxmasterrace
  - r/Hacking_Tutorials
  - r/unixporn #getricing
Youtube:
  - LiveOverflow
  - Hak5
  - pwn.college
  - RTL Engineering
  - Guided Hacking
  - Ben Eater
  - Computerphile
  - DEFCONConference
  - Aerospace Village
  - Car Hacking Village
  - Cheat The Game
  - LockPickingLawer
  - Suckerpinch
  - John Hammond
  - Nahmsec
  - Zero Day Initiative
  - stacksmashing
Websites:
  - vx-underground.org
  - index-of.es
  - repnz.github.io
  - corelan.be
  - github.com/RPISEC/MBE
  - pwn.college
  - exploit.education
  - hockthebox.eu
  - hackthissite.org
  - overthewire.org
  - tryhackme.com
  - ringzer0ctf.com
  - ctftime.org
  - picoctf.com
  - lobste.rs
  - 2thi.cc/doc
  - nostarch.com
  - flaws.cloud

Programming

- Python : Useful for everything

- C/C++ & ASM : Exploit & RE

- Golang & Rust 

- Web - JavaScript, PHP, etc. 

- Machine Learning: For working with data

Little reason to write in assembly, Lots of reasons to read assembly

  • Hackerrank - Great for learning languages fast and practicing your understanding of algorithms. Ex. functional programming, Regex, ML, Bash, C/C++, etc.)
  • Side Projects - Websites, Hardware, SDR, IOT, etc. 
    • If you know how to build it, you can break it!

CTFs

CTFs are a great way to learn and apply skills!

Where to start!

Classes

Cybrary - Red Team and Blue Team Cyber 

RPISEC-MBE - Intro to Exploit Dev.

ACES-Minor @UMD

pwn.college - Intro to cyber (and ctfs)

Graduate Degree: M. ENG and Computer Science

CMSC389R - Intro to Ethical Hacking

CMSC389J  - Intro to Reverse Engineering

 

Certifications: 

Certified Ethical Hacking

Offensive Security - OSCP

 

Open Source

Git____ is your friend!

 

CTF Writeups/Source Code

Metasploit

Wireshark

Nikto

NMap

Volatility

angr

Capstone - (not a school project)

BAP - Binary Analysis Platform

Many many more!

Books

  • Ghidra Book - Reverse Engineering

  • Practical Reverse Engineering

  • Practical Malware Analysis

  • Programming Linux Anti-Reversing Techniques

  • Black Hat Python - Development (Pen. Testing)

  • The Hacker Playbook 2 & 3 (Pen. Testing)

  • PoC || GTFO

  • Hacking the Art of Exploitation

  • Shellcoders Handbook

  • Grey Hat Hacking

  • Open Source Intelligence Techniques

Academia

- Research (Network with professors/faculty)

- ACES

- Cyber Security Specialization 

- M. Eng. in Cyber Security

- Breakerspace 

- Lots of open source projects are being run by universities as research projects. You can easily get involved by contributing to these projects. Features/Bug Fixes/Documentation are all encouraged!

Internships

NETWORK NETWORK NETWORK

Go to CSEC meetings & meet recruiters (they are here for you)

 

Pro tips -

Open conversation with... "I'm taking <some class title> and I really enjoyed this project on <topic like bufferoverflows>. Do you guys do stuff like that on the job?"

 

Ask... "What kind of training/learning opportunities do you have? I love to learn!"

 

Ask... "Whats the office culture like?" (You'll love your job if you love your coworkers)

Your friends are just as (if not more important) than these resources! DO SIDE PROJECTS! BE INVOLVED!

Questions/Comments/Random

Thank you!

Getting into Cybersecurity V2

By Ragnar Security

Source: Drake P

Getting into Cybersecurity V2

This slide deck is introduce people who are interested in cybersecurity, but don't know where to start.

  • 400

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