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🔐 Cybersecurity

Ethical hacking, penetration testing, network security, CTFs and defensive security

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b00t2root CTF: cuz rsa is lub [RSA Cryptography]
Cybersecurity
b00t2root CTF: cuz rsa is lub [RSA Cryptography]
John Hammond Intermediate 7y ago
b00t2root19 CTF: Groot (3/3) [LINUX Post-Exploitation]
Cybersecurity
b00t2root19 CTF: Groot (3/3) [LINUX Post-Exploitation]
John Hammond Intermediate 7y ago
b00t2root19 CTF: Tony Stank (2/3) [LINUX Privilege Escalation]
Cybersecurity
b00t2root19 CTF: Tony Stank (2/3) [LINUX Privilege Escalation]
John Hammond Intermediate 7y ago
b00t2root19 CTF: Steve Rogers (1/3) [LINUX Enumeration]
Cybersecurity
b00t2root19 CTF: Steve Rogers (1/3) [LINUX Enumeration]
John Hammond Intermediate 7y ago
RED TEAM HACKING | CyberForce 2018
Cybersecurity
RED TEAM HACKING | CyberForce 2018
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Web [150] Accessible Bazaar Repositories
Cybersecurity
MITRE CTF 2019 - Web [150] Accessible Bazaar Repositories
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Web [100] Googling Alan Turing
Cybersecurity
MITRE CTF 2019 - Web [100] Googling Alan Turing
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Web [50] HTTPS Certificate Valid Addresses
Cybersecurity
MITRE CTF 2019 - Web [50] HTTPS Certificate Valid Addresses
John Hammond Intermediate 7y ago
MITRE CTF 2019 - JOURNEY TO THE CENTER OF THE FILE | ZIP Archive Matryoshka Doll
Cybersecurity
MITRE CTF 2019 - JOURNEY TO THE CENTER OF THE FILE | ZIP Archive Matryoshka Doll
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Grab Bag [100] Rick Roll, Nomination & Strings
Cybersecurity
MITRE CTF 2019 - Grab Bag [100] Rick Roll, Nomination & Strings
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Grab Bag [50] Filtering Nyan Cat
Cybersecurity
MITRE CTF 2019 - Grab Bag [50] Filtering Nyan Cat
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Linux [200] Race Conditions with BASH
Cybersecurity
MITRE CTF 2019 - Linux [200] Race Conditions with BASH
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Linux [150] Understanding Processes with /proc
Cybersecurity
MITRE CTF 2019 - Linux [150] Understanding Processes with /proc
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Linux [100] Calling Shell commands with VIM
Cybersecurity
MITRE CTF 2019 - Linux [100] Calling Shell commands with VIM
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Linux [100] Replacing Binaries in the PATH
Cybersecurity
MITRE CTF 2019 - Linux [100] Replacing Binaries in the PATH
John Hammond Intermediate 7y ago
MITRE CTF 2019 - Linux [50] Escaping RBASH with SSH
Cybersecurity
MITRE CTF 2019 - Linux [50] Escaping RBASH with SSH
John Hammond Intermediate 7y ago
BSIDES LONG ISLAND 2019 CTF
Cybersecurity
BSIDES LONG ISLAND 2019 CTF
John Hammond Intermediate 7y ago
XMAS CTF HIGHLIGHTS
Cybersecurity
XMAS CTF HIGHLIGHTS
John Hammond Intermediate 7y ago
Server-Side Template Injection w/ Flask | Flaskcards [34] picoCTF 2018
Cybersecurity
Server-Side Template Injection w/ Flask | Flaskcards [34] picoCTF 2018
John Hammond Intermediate 7y ago
Leaking the Stack / Printf Format Vulnerability | echooo [32] picoCTF 2018
Cybersecurity
Leaking the Stack / Printf Format Vulnerability | echooo [32] picoCTF 2018
John Hammond Intermediate 7y ago
Pros vs. Joes CTF at BsidesDC 2018
Cybersecurity
Pros vs. Joes CTF at BsidesDC 2018
John Hammond Intermediate 7y ago
Multi-Exponent RSA Cryptography | Square CTF "Flipped Bits"
Cybersecurity
Multi-Exponent RSA Cryptography | Square CTF "Flipped Bits"
John Hammond Intermediate 7y ago
MORSE CODE Steganography (2/2) BsidesCT CTF 2018
Cybersecurity
MORSE CODE Steganography (2/2) BsidesCT CTF 2018
John Hammond Intermediate 7y ago
Steganography (1/2) BsidesCT CTF 2018
Cybersecurity
Steganography (1/2) BsidesCT CTF 2018
John Hammond Intermediate 7y ago
picoCTF 2018 [03]  Cryptography Warmups, grep & netcat
Cybersecurity
picoCTF 2018 [03] Cryptography Warmups, grep & netcat
John Hammond Intermediate 7y ago
Solving Equations with Sympy | CSAW CTF "Algebra"
Cybersecurity
Solving Equations with Sympy | CSAW CTF "Algebra"
John Hammond Intermediate 7y ago
Single-Byte XOR | CSAW CTF "babycrypto"
Cybersecurity
Single-Byte XOR | CSAW CTF "babycrypto"
John Hammond Intermediate 7y ago
LDAP Injection | CSAW CTF "ldab"
Cybersecurity
LDAP Injection | CSAW CTF "ldab"
John Hammond Intermediate 7y ago
x86 Assembly | CSAW CTF "A Tour of x86"
Cybersecurity
x86 Assembly | CSAW CTF "A Tour of x86"
John Hammond Intermediate 7y ago
PWN Overflow | CSAW CTF "BigBoy"
Cybersecurity
PWN Overflow | CSAW CTF "BigBoy"
John Hammond Intermediate 7y ago
GIF Split & Stack | IceCTF [05] "Modern Picasso"
Cybersecurity
GIF Split & Stack | IceCTF [05] "Modern Picasso"
John Hammond Intermediate 7y ago
Hiding Content with CSS | IceCTF [02] "Lights Out!"
Cybersecurity
Hiding Content with CSS | IceCTF [02] "Lights Out!"
John Hammond Intermediate 7y ago
ECB Encryption / Python Web Hacking | Natas: OverTheWire (Level 28)
Cybersecurity
ECB Encryption / Python Web Hacking | Natas: OverTheWire (Level 28)
John Hammond Intermediate 7y ago
EditThisCookie | CodefestCTF 2018: "Fortune Cookie"
Cybersecurity
EditThisCookie | CodefestCTF 2018: "Fortune Cookie"
John Hammond Intermediate 7y ago
"Introduction to Linux" [05] JSON Lesson Book
Cybersecurity
"Introduction to Linux" [05] JSON Lesson Book
John Hammond Beginner 7y ago
"Introduction to Linux" [04] Shell Source Code
Cybersecurity
"Introduction to Linux" [04] Shell Source Code
John Hammond Beginner 7y ago
Basic SQL Injection | PicoCTF 2017 [35] My First SQL
Cybersecurity
Basic SQL Injection | PicoCTF 2017 [35] My First SQL
John Hammond Intermediate 7y ago
Introduction to Linux [03] BASH Training Wheels Shell
Cybersecurity
Introduction to Linux [03] BASH Training Wheels Shell
John Hammond Beginner 7y ago
Reverse Engineering Assembly | PicoCTF 2017 [34] Programmer's Assemble
Cybersecurity
Reverse Engineering Assembly | PicoCTF 2017 [34] Programmer's Assemble
John Hammond Intermediate 7y ago
"Introduction To Linux" [02] Raspberry Pi & Git
Cybersecurity
"Introduction To Linux" [02] Raspberry Pi & Git
John Hammond Beginner 7y ago
ERROR-Based BLIND SQL Injection | "TRY HARDER" (HackconCTF 2018)
Cybersecurity
ERROR-Based BLIND SQL Injection | "TRY HARDER" (HackconCTF 2018)
John Hammond Intermediate 7y ago
Ethereum Blockchain | "EtherHide" (Hackcon2018 CTF)
Cybersecurity
Ethereum Blockchain | "EtherHide" (Hackcon2018 CTF)
John Hammond Intermediate 7y ago
Stupid Superman Recon | "Ethical Hacker" (HackconCTF 2018)
Cybersecurity
Stupid Superman Recon | "Ethical Hacker" (HackconCTF 2018)
John Hammond Intermediate 7y ago
ASCII & Regular Expressions | "Find Me ASAP" (Hackcon2018 CTF)
Cybersecurity
ASCII & Regular Expressions | "Find Me ASAP" (Hackcon2018 CTF)
John Hammond Intermediate 7y ago
Vignere Cipher | "Salad Upgrade" (Hackcon2018 CTF)
Cybersecurity
Vignere Cipher | "Salad Upgrade" (Hackcon2018 CTF)
John Hammond Intermediate 7y ago
Simple Strings | "Hoaxes & Hexes" (Hackcon2018 CTF)
Cybersecurity
Simple Strings | "Hoaxes & Hexes" (Hackcon2018 CTF)
John Hammond Beginner 7y ago
Caesar Cipher | "Caesar Salad" (Hackcon2018 CTF)
Cybersecurity
Caesar Cipher | "Caesar Salad" (Hackcon2018 CTF)
John Hammond Intermediate 7y ago
Wireshark Decrypting SSL | "Ssleepy" TJCTF 2018
Cybersecurity
Wireshark Decrypting SSL | "Ssleepy" TJCTF 2018
John Hammond Intermediate 7y ago
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Offensive Hacking Unfolded - Become a Pro Pentester
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Self-paced
Offensive Hacking Unfolded - Become a Pro Pentester
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An Introduction to Cryptography
📚 Coursera Course ↗
Self-paced
An Introduction to Cryptography
Opens on Coursera ↗
Block Cipher Modes of Operation Training
📚 Coursera Course ↗
Self-paced
Block Cipher Modes of Operation Training
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Security and Troubleshooting Essentials
📚 Coursera Course ↗
Self-paced
Security and Troubleshooting Essentials
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Strategic Cyber Effects Management
📚 Coursera Course ↗
Self-paced
Strategic Cyber Effects Management
Opens on Coursera ↗
Segurança de TI: defesa contra as artes negras digitais
📚 Coursera Course ↗
Self-paced
Segurança de TI: defesa contra as artes negras digitais
Opens on Coursera ↗