mattloong

KCL

Singapore

Intro to Cybersecurity

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File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-04-28 12:22:07

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-05-01 16:31:21

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-05-01 17:31:53

Reading Endianness (Python)

Time of First Successful Submission: 2026-05-01 17:45:29

Reading Endianness (C)

Time of First Successful Submission: 2026-05-01 17:49:11

Reading Endianness (x86)

Time of First Successful Submission: 2026-05-01 17:53:23

Version Information (Python)

Time of First Successful Submission: 2026-05-01 19:09:14

Version Information (C)

Time of First Successful Submission: 2026-05-01 19:19:06

Version Information (x86)

Time of First Successful Submission: 2026-05-03 12:08:18

Metadata and Data (Python)

Time of First Successful Submission: 2026-05-03 12:42:10

Metadata and Data (C)

Time of First Successful Submission: 2026-05-03 12:53:29

Metadata and Data (x86)

Time of First Successful Submission: 2026-05-03 13:11:29

Input Restrictions (Python)

Time of First Successful Submission: 2026-05-05 15:45:31

Input Restrictions (C)

Time of First Successful Submission: 2026-05-05 15:53:52

Input Restrictions (x86)

Time of First Successful Submission: 2026-05-08 23:24:26

Your First Overflow (easy)

Time of First Successful Submission: 2025-07-19 16:12:51


Start Here

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Using the Terminal

Time of First Successful Submission: 2026-04-16 17:42:13

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-16 17:44:03

Using the GUI Desktop

Time of First Successful Submission: 2026-04-16 17:45:36

Pasting into the Desktop

Time of First Successful Submission: 2026-04-16 17:46:30

Restarting Challenges

Time of First Successful Submission: 2026-04-16 17:53:52

Challenge Programs

Time of First Successful Submission: 2026-04-16 17:55:10

The Flag File

Time of First Successful Submission: 2026-04-16 17:56:04

Using Privileged Mode

Time of First Successful Submission: 2026-04-16 18:01:34

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-16 18:03:46

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-16 18:04:15


Computing 101

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Your First Register

Time of First Successful Submission: 2026-04-16 18:49:04

Your First Syscall

Time of First Successful Submission: 2026-04-16 18:50:11

Exit Codes

Time of First Successful Submission: 2026-04-16 18:52:01

Building Executables

Time of First Successful Submission: 2026-04-16 18:54:21

Moving Between Registers

Time of First Successful Submission: 2026-04-16 19:26:52

Loading From Memory

Time of First Successful Submission: 2026-04-16 19:56:47

More Loading Practice

Time of First Successful Submission: 2026-04-16 19:57:37

Dereferencing Pointers

Time of First Successful Submission: 2026-04-16 20:01:07

Dereferencing Yourself

Time of First Successful Submission: 2026-04-16 20:13:08

Dereferencing with Offsets

Time of First Successful Submission: 2026-04-16 20:14:54

Stored Addresses

Time of First Successful Submission: 2026-04-16 20:16:53

Double Dereference

Time of First Successful Submission: 2026-04-16 20:26:30

The Stack

Time of First Successful Submission: 2026-04-16 20:32:21

Stack Offsets

Time of First Successful Submission: 2026-04-16 20:33:38

Program Arguments on the Stack

Time of First Successful Submission: 2026-04-16 20:50:03

Popping From the Stack

Time of First Successful Submission: 2026-04-16 20:55:13

Disassembling Programs

Time of First Successful Submission: 2026-04-16 21:15:08

Tracing Syscalls

Time of First Successful Submission: 2025-11-26 16:58:58

Starting GDB

Time of First Successful Submission: 2025-11-26 16:59:53

Quitting GDB

Time of First Successful Submission: 2026-04-16 20:56:08

Starting Programs in GDB

Time of First Successful Submission: 2025-11-26 17:01:00

Disassembling in GDB

Time of First Successful Submission: 2026-04-16 20:57:14

Stepping Through Instructions

Time of First Successful Submission: 2026-04-16 20:59:09

Reading Register Values

Time of First Successful Submission: 2026-04-16 21:00:01

Popping Stack Values

Time of First Successful Submission: 2026-04-16 21:02:03

Examining Memory

Time of First Successful Submission: 2026-04-16 21:04:13

Examining Stack Pointers

Time of First Successful Submission: 2026-04-16 21:06:39

Cooperative Debugging

Time of First Successful Submission: 2026-04-16 21:11:40

Writing Output

Time of First Successful Submission: 2026-04-16 21:23:48

Chaining Syscalls

Time of First Successful Submission: 2026-04-16 21:32:36

Writing Strings

Time of First Successful Submission: 2026-04-16 21:34:40

Reading Data

Time of First Successful Submission: 2026-04-16 21:45:37

Opening Files

Time of First Successful Submission: 2026-04-16 21:58:01

Hardcoding the Filename

Time of First Successful Submission: 2026-04-16 22:02:30

Comparing Values

Time of First Successful Submission: 2026-04-16 22:15:22

Comparing Characters

Time of First Successful Submission: 2026-04-16 22:24:54

Conditional Control Flow

Time of First Successful Submission: 2026-04-16 22:28:06

Comparing Strings

Time of First Successful Submission: 2026-04-16 22:31:31

Reverse the Password

Time of First Successful Submission: 2026-04-16 22:34:18

Conditionals Without Conditionals

Time of First Successful Submission: 2026-04-16 23:01:52

Looping

Time of First Successful Submission: 2026-04-16 23:05:20

Reverse the Calculation

Time of First Successful Submission: 2026-04-16 23:09:13

Reverse the Reverse

Time of First Successful Submission: 2026-04-18 01:58:58

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-04-18 02:00:21

Loops on Data

Time of First Successful Submission: 2026-04-18 02:01:32

set-register

Time of First Successful Submission: 2026-04-18 02:04:58

set-multiple-registers

Time of First Successful Submission: 2026-04-18 02:06:31

add-to-register

Time of First Successful Submission: 2026-04-18 02:08:49

linear-equation-registers

Time of First Successful Submission: 2026-04-18 02:11:37

integer-division

Time of First Successful Submission: 2026-04-18 02:15:05

modulo-operation

Time of First Successful Submission: 2026-04-18 02:22:29

set-upper-byte

Time of First Successful Submission: 2026-04-18 02:25:17

efficient-modulo

Time of First Successful Submission: 2026-04-18 02:31:57


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2026-04-16 17:42:13

Using the VSCode Workspace

Time of First Successful Submission: 2026-04-16 17:44:03

Using the GUI Desktop

Time of First Successful Submission: 2026-04-16 17:45:36

Pasting into the Desktop

Time of First Successful Submission: 2026-04-16 17:46:30

Connecting over SSH

Time of First Successful Submission: 2026-04-16 17:51:21

Restarting Challenges

Time of First Successful Submission: 2026-04-16 17:53:52

Challenge Programs

Time of First Successful Submission: 2026-04-16 17:55:10

The Flag File

Time of First Successful Submission: 2026-04-16 17:56:04

Using Privileged Mode

Time of First Successful Submission: 2026-04-16 18:01:34

Persistent Home Directories - One

Time of First Successful Submission: 2026-04-16 18:03:46

Persistent Home Directories - Two

Time of First Successful Submission: 2026-04-16 18:04:15