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Triple Dereference

Time of First Successful Submission: 2026-01-16 03:54:21


Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-03 17:56:15

Command Arguments

Time of First Successful Submission: 2026-01-03 17:57:10

Command History

Time of First Successful Submission: 2026-01-03 17:57:56

The Root Path

Time of First Successful Submission: 2026-01-07 03:12:35


Intro to Cybersecurity

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Connect

Time of First Successful Submission: 2026-02-27 09:00:51

Send

Time of First Successful Submission: 2026-03-11 09:18:02

Shutdown

Time of First Successful Submission: 2026-03-11 09:27:40

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-05 17:17:51

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-06 17:52:09

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-08 13:31:12

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-08 16:36:18

Reading Endianness (C)

Time of First Successful Submission: 2026-03-09 11:04:46

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-09 17:02:38

Version Information (Python)

Time of First Successful Submission: 2026-03-10 10:07:54

Version Information (C)

Time of First Successful Submission: 2026-03-12 02:25:45

Version Information (x86)

Time of First Successful Submission: 2026-03-12 08:04:23

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-12 08:36:19

Metadata and Data (C)

Time of First Successful Submission: 2026-03-12 16:35:58

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-13 04:40:22

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-13 05:21:22

Input Restrictions (C)

Time of First Successful Submission: 2026-03-13 18:16:27

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-13 18:34:48

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-14 16:54:20

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-19 08:48:52

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-19 09:35:19

A Basic cIMG (Python)

Time of First Successful Submission: 2026-03-23 03:37:28

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-23 03:50:58

A Basic cIMG (x86)

Time of First Successful Submission: 2026-03-23 04:11:54

Internal State Mini (C)

Time of First Successful Submission: 2026-03-30 17:53:34


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-21 13:59:19

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-21 14:07:31

Using the GUI Desktop

Time of First Successful Submission: 2025-12-22 16:59:37

Pasting into the Desktop

Time of First Successful Submission: 2025-12-22 17:06:26

Restarting Challenges

Time of First Successful Submission: 2025-12-22 17:30:42

Challenge Programs

Time of First Successful Submission: 2025-12-22 17:36:08

The Flag File

Time of First Successful Submission: 2025-12-22 17:42:53

Using Privileged Mode

Time of First Successful Submission: 2025-12-22 17:50:53

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-22 17:56:56

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-22 18:03:24


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-03 17:56:15

Intro to Arguments

Time of First Successful Submission: 2026-01-03 17:57:10

Command History

Time of First Successful Submission: 2026-01-03 17:57:56

The Root

Time of First Successful Submission: 2026-01-07 03:12:35


Computing 101

94 / 94 69 / 21499


Your First Register

Time of First Successful Submission: 2025-12-24 18:06:15

Your First Syscall

Time of First Successful Submission: 2025-12-24 19:01:49

Exit Codes

Time of First Successful Submission: 2025-12-25 02:59:48

Building Executables

Time of First Successful Submission: 2025-12-25 11:18:25

Moving Between Registers

Time of First Successful Submission: 2025-12-25 16:51:44

Loading From Memory

Time of First Successful Submission: 2026-01-15 17:54:02

More Loading Practice

Time of First Successful Submission: 2026-01-15 18:01:54

Dereferencing Pointers

Time of First Successful Submission: 2026-01-16 03:09:06

Dereferencing Yourself

Time of First Successful Submission: 2026-01-16 03:21:19

Dereferencing with Offsets

Time of First Successful Submission: 2026-01-16 03:29:15

Stored Addresses

Time of First Successful Submission: 2026-01-16 03:39:18

Double Dereference

Time of First Successful Submission: 2026-01-16 03:45:54

The Stack

Time of First Successful Submission: 2026-02-23 03:10:41

Stack Offsets

Time of First Successful Submission: 2026-02-23 03:23:52

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-23 03:31:14

Popping From the Stack

Time of First Successful Submission: 2026-02-23 03:36:52

Disassembling Programs

Time of First Successful Submission: 2026-02-23 03:52:55

Tracing Syscalls

Time of First Successful Submission: 2026-01-15 15:49:04

Starting GDB

Time of First Successful Submission: 2026-01-15 15:56:03

Quitting GDB

Time of First Successful Submission: 2026-02-22 15:12:50

Starting Programs in GDB

Time of First Successful Submission: 2026-01-15 16:03:59

Disassembling in GDB

Time of First Successful Submission: 2026-02-22 17:36:09

Stepping Through Instructions

Time of First Successful Submission: 2026-02-24 07:55:17

Reading Register Values

Time of First Successful Submission: 2026-02-24 07:57:14

Popping Stack Values

Time of First Successful Submission: 2026-02-24 08:18:21

Examining Memory

Time of First Successful Submission: 2026-02-24 08:26:18

Examining Stack Pointers

Time of First Successful Submission: 2026-02-24 08:28:39

Cooperative Debugging

Time of First Successful Submission: 2026-02-24 08:41:06

Writing Output

Time of First Successful Submission: 2026-01-16 09:40:45

Chaining Syscalls

Time of First Successful Submission: 2026-01-16 10:17:23

Writing Strings

Time of First Successful Submission: 2026-01-16 10:22:41

Reading Data

Time of First Successful Submission: 2026-01-16 10:33:51

Opening Files

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

Hardcoding the Filename

Time of First Successful Submission: 2026-02-22 10:36:48

Comparing Values

Time of First Successful Submission: 2026-02-24 08:59:09

Comparing Characters

Time of First Successful Submission: 2026-02-24 09:09:01

Conditional Control Flow

Time of First Successful Submission: 2026-02-24 09:43:00

Comparing Strings

Time of First Successful Submission: 2026-02-24 10:18:40

Reverse the Password

Time of First Successful Submission: 2026-02-24 10:31:53

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-25 04:21:41

Looping

Time of First Successful Submission: 2026-02-25 04:40:49

Reverse the Calculation

Time of First Successful Submission: 2026-02-25 08:48:27

Reverse the Reverse

Time of First Successful Submission: 2026-02-25 09:06:23

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-25 09:30:22

Loops on Data

Time of First Successful Submission: 2026-02-25 10:11:38

set-register

Time of First Successful Submission: 2026-01-18 17:39:44

set-multiple-registers

Time of First Successful Submission: 2026-01-19 06:51:18

add-to-register

Time of First Successful Submission: 2026-01-19 06:55:56

linear-equation-registers

Time of First Successful Submission: 2026-01-19 07:01:38

integer-division

Time of First Successful Submission: 2026-01-19 07:40:17

modulo-operation

Time of First Successful Submission: 2026-01-19 07:45:11

set-upper-byte

Time of First Successful Submission: 2026-01-19 07:51:33

efficient-modulo

Time of First Successful Submission: 2026-01-19 09:07:28

byte-extraction

Time of First Successful Submission: 2026-01-19 09:55:25

bitwise-and

Time of First Successful Submission: 2026-01-19 11:03:35

check-even

Time of First Successful Submission: 2026-01-20 04:09:44

memory-read

Time of First Successful Submission: 2026-01-20 04:26:40

memory-write

Time of First Successful Submission: 2026-01-20 04:31:07

memory-increment

Time of First Successful Submission: 2026-01-20 04:38:38

byte-access

Time of First Successful Submission: 2026-01-20 04:52:56

memory-size-access

Time of First Successful Submission: 2026-01-20 06:51:55

little-endian-write

Time of First Successful Submission: 2026-01-20 07:23:01

memory-sum

Time of First Successful Submission: 2026-01-20 07:40:48

stack-subtraction

Time of First Successful Submission: 2026-01-20 07:56:37

swap-stack-values

Time of First Successful Submission: 2026-01-20 08:05:39

average-stack-values

Time of First Successful Submission: 2026-01-20 08:22:18

absolute-jump

Time of First Successful Submission: 2026-01-20 08:51:12

relative-jump

Time of First Successful Submission: 2026-01-20 09:52:41

jump-trampoline

Time of First Successful Submission: 2026-01-20 10:06:31

conditional-jump

Time of First Successful Submission: 2026-01-20 10:45:24

indirect-jump

Time of First Successful Submission: 2026-01-20 11:20:30

average-loop

Time of First Successful Submission: 2026-01-21 02:17:27

count-non-zero

Time of First Successful Submission: 2026-01-21 02:55:56

string-lower

Time of First Successful Submission: 2026-01-21 09:38:38

most-common-byte

Time of First Successful Submission: 2026-01-21 17:23:22

Exit

Time of First Successful Submission: 2026-02-02 07:19:34

Socket

Time of First Successful Submission: 2026-02-02 09:21:29

Bind

Time of First Successful Submission: 2026-02-03 04:55:20

Listen

Time of First Successful Submission: 2026-02-03 09:26:05

Accept

Time of First Successful Submission: 2026-02-03 10:53:39

Static Response

Time of First Successful Submission: 2026-02-03 17:56:11

Dynamic Response

Time of First Successful Submission: 2026-02-09 17:04:19

Iterative GET Server

Time of First Successful Submission: 2026-02-11 07:15:58

Concurrent GET Server

Time of First Successful Submission: 2026-02-11 08:21:17

Concurrent POST Server

Time of First Successful Submission: 2026-02-13 02:08:24

Web Server

Time of First Successful Submission: 2026-02-13 03:10:07

Debugging Programs

Time of First Successful Submission: 2026-01-22 08:33:13

Inspecting Registers

Time of First Successful Submission: 2026-01-22 08:40:19

Examining Memory

Time of First Successful Submission: 2026-01-22 09:52:44

Setting Breakpoints

Time of First Successful Submission: 2026-01-26 08:53:13

GDB Scripting

Time of First Successful Submission: 2026-01-27 04:38:04

Modifying Data

Time of First Successful Submission: 2026-01-27 07:46:43

Modifying Execution

Time of First Successful Submission: 2026-01-27 07:51:47

Broken Functions

Time of First Successful Submission: 2026-01-27 09:16:41


Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-02-13 03:34:25

... and again!

Time of First Successful Submission: 2026-02-13 03:36:03

Newline Troubles

Time of First Successful Submission: 2026-02-13 03:46:40

Reasoning about files

Time of First Successful Submission: 2026-02-13 06:55:26

Specifying Filenames

Time of First Successful Submission: 2026-02-15 19:08:40


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-21 13:59:19

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-21 14:07:31

Using the GUI Desktop

Time of First Successful Submission: 2025-12-22 16:59:37

Pasting into the Desktop

Time of First Successful Submission: 2025-12-22 17:06:26

Restarting Challenges

Time of First Successful Submission: 2025-12-22 17:30:42

Getting Help

Time of First Successful Submission: 2025-12-22 17:34:44

Challenge Programs

Time of First Successful Submission: 2025-12-22 17:36:08

The Flag File

Time of First Successful Submission: 2025-12-22 17:42:53

Using Privileged Mode

Time of First Successful Submission: 2025-12-22 17:50:53

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-22 17:56:56

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-22 18:03:24