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Triple Dereference

Time of First Successful Submission: 2025-04-19 10:32:03

set-register

Time of First Successful Submission: 2025-04-20 03:44:14

set-multiple-registers

Time of First Successful Submission: 2025-04-20 03:45:07

add-to-register

Time of First Successful Submission: 2025-04-20 03:47:21

linear-equation-registers

Time of First Successful Submission: 2025-04-20 03:49:47

integer-division

Time of First Successful Submission: 2025-06-16 10:48:06

modulo-operation

Time of First Successful Submission: 2025-06-16 10:53:13

set-upper-byte

Time of First Successful Submission: 2025-06-17 01:32:13

efficient-modulo

Time of First Successful Submission: 2025-06-17 01:47:13

byte-extraction

Time of First Successful Submission: 2025-06-17 01:52:08

bitwise-and

Time of First Successful Submission: 2025-06-17 02:00:08

check-even

Time of First Successful Submission: 2025-06-17 02:14:56

memory-read

Time of First Successful Submission: 2025-06-17 06:52:21

memory-write

Time of First Successful Submission: 2025-06-17 06:53:42

memory-increment

Time of First Successful Submission: 2025-06-17 07:04:09

byte-access

Time of First Successful Submission: 2025-06-17 07:05:41

memory-size-access

Time of First Successful Submission: 2025-06-17 07:08:23

little-endian-write

Time of First Successful Submission: 2025-06-17 07:14:17

memory-sum

Time of First Successful Submission: 2025-06-17 07:20:19

stack-subtraction

Time of First Successful Submission: 2025-06-17 07:48:37

swap-stack-values

Time of First Successful Submission: 2025-06-17 08:01:39

average-stack-values

Time of First Successful Submission: 2025-06-17 08:10:11

absolute-jump

Time of First Successful Submission: 2025-06-17 08:40:34

relative-jump

Time of First Successful Submission: 2025-06-17 08:50:55

jump-trampoline

Time of First Successful Submission: 2025-06-19 00:55:49

conditional-jump

Time of First Successful Submission: 2025-06-19 02:10:31

indirect-jump

Time of First Successful Submission: 2025-06-19 02:38:48

average-loop

Time of First Successful Submission: 2025-06-19 02:44:13

count-non-zero

Time of First Successful Submission: 2025-06-19 03:13:20

string-lower

Time of First Successful Submission: 2025-06-25 07:57:39

most-common-byte

Time of First Successful Submission: 2025-06-25 09:10:24

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-04-10 04:17:14

Command Arguments

Time of First Successful Submission: 2025-04-10 04:18:20

The Root Path

Time of First Successful Submission: 2025-04-13 05:07:19

Absolute Paths

Time of First Successful Submission: 2025-04-13 05:08:18

Changing position

Time of First Successful Submission: 2025-04-13 05:10:20

Changing to an Absolute Path

Time of First Successful Submission: 2025-04-13 05:11:07

Relative Paths

Time of First Successful Submission: 2025-04-13 05:12:21

Cat

Time of First Successful Submission: 2025-04-14 06:37:42

Ls

Time of First Successful Submission: 2025-04-14 06:49:57

Ls All

Time of First Successful Submission: 2025-04-14 06:52:37

Find

Time of First Successful Submission: 2025-04-14 07:02:15

Piping Echo

Time of First Successful Submission: 2025-04-15 07:00:45

Piping Stdout

Time of First Successful Submission: 2025-04-15 07:02:18

Piping Stdin

Time of First Successful Submission: 2025-04-15 07:10:42

Start Here

8 / 10 30932 / 67589

Using the VSCode Workspace

Time of First Successful Submission: 2025-04-08 10:22:38

Using the GUI Desktop

Time of First Successful Submission: 2025-04-08 10:25:28

Restarting Challenges

Time of First Successful Submission: 2025-04-08 10:30:58

Challenge Programs

Time of First Successful Submission: 2025-04-08 10:36:07

The Flag File

Time of First Successful Submission: 2025-04-08 10:39:24

Using Privileged Mode

Time of First Successful Submission: 2025-04-08 10:42:36

Persistent Home Directories - One

Time of First Successful Submission: 2025-04-08 10:47:03

Persistent Home Directories - Two

Time of First Successful Submission: 2025-04-08 10:48:02

Linux Luminarium

83 / 128 15093 / 49489

Intro to Commands

Time of First Successful Submission: 2025-04-10 04:17:14

Intro to Arguments

Time of First Successful Submission: 2025-04-10 04:18:20

The Root

Time of First Successful Submission: 2025-04-13 05:07:19

Program and absolute paths

Time of First Successful Submission: 2025-04-13 05:08:18

Position thy self

Time of First Successful Submission: 2025-04-13 05:10:20

Position elsewhere

Time of First Successful Submission: 2025-04-13 05:11:07

implicit relative paths, from /

Time of First Successful Submission: 2025-04-13 05:12:21

explicit relative paths, from /

Time of First Successful Submission: 2025-04-13 05:12:57

implicit relative path

Time of First Successful Submission: 2025-04-13 05:14:25

home sweet home

Time of First Successful Submission: 2025-04-13 05:17:12

cat: not the pet, but the command!

Time of First Successful Submission: 2025-04-14 06:37:42

catting absolute paths

Time of First Successful Submission: 2025-04-14 06:38:44

more catting practice

Time of First Successful Submission: 2025-04-14 06:47:24

grepping for a needle in a haystack

Time of First Successful Submission: 2025-04-14 06:48:44

listing files

Time of First Successful Submission: 2025-04-14 06:49:57

touching files

Time of First Successful Submission: 2025-04-14 06:50:58

removing files

Time of First Successful Submission: 2025-04-14 06:51:42

hidden files

Time of First Successful Submission: 2025-04-14 06:52:37

An Epic Filesystem Quest

Time of First Successful Submission: 2025-04-14 06:57:36

making directories

Time of First Successful Submission: 2025-04-14 06:58:10

finding files

Time of First Successful Submission: 2025-04-14 07:02:15

linking files

Time of First Successful Submission: 2025-04-14 07:10:42

Learning From Documentation

Time of First Successful Submission: 2025-04-15 02:16:05

Learning Complex Usage

Time of First Successful Submission: 2025-04-15 02:20:42

Reading Manuals

Time of First Successful Submission: 2025-04-15 02:24:52

Searching Manuals

Time of First Successful Submission: 2025-04-15 02:26:16

Searching For Manuals

Time of First Successful Submission: 2025-04-15 02:44:59

Helpful Programs

Time of First Successful Submission: 2025-04-15 02:46:28

Help for Builtins

Time of First Successful Submission: 2025-04-15 02:49:00

Matching with *

Time of First Successful Submission: 2025-04-15 05:12:04

Matching with ?

Time of First Successful Submission: 2025-04-15 05:15:11

Matching with []

Time of First Successful Submission: 2025-04-15 05:17:15

Matching paths with []

Time of First Successful Submission: 2025-04-15 05:18:48

Mixing globs

Time of First Successful Submission: 2025-04-15 05:23:59

Exclusionary globbing

Time of First Successful Submission: 2025-04-15 05:25:26

Redirecting output

Time of First Successful Submission: 2025-04-15 07:00:45

Redirecting more output

Time of First Successful Submission: 2025-04-15 07:02:18

Appending output

Time of First Successful Submission: 2025-04-15 07:03:54

Redirecting errors

Time of First Successful Submission: 2025-04-15 07:09:17

Redirecting input

Time of First Successful Submission: 2025-04-15 07:10:42

Grepping stored results

Time of First Successful Submission: 2025-04-15 07:12:16

Grepping live output

Time of First Successful Submission: 2025-04-15 07:13:20

Grepping errors

Time of First Successful Submission: 2025-04-15 07:17:16

Duplicating piped data with tee

Time of First Successful Submission: 2025-04-15 07:29:20

Writing to multiple programs

Time of First Successful Submission: 2025-04-15 09:31:03

Split-piping stderr and stdout

Time of First Successful Submission: 2025-04-15 09:48:22

Printing Variables

Time of First Successful Submission: 2025-04-15 09:53:48

Setting Variables

Time of First Successful Submission: 2025-04-15 09:56:28

Multi-word Variables

Time of First Successful Submission: 2025-04-15 10:01:22

Exporting Variables

Time of First Successful Submission: 2025-04-15 10:07:51

Printing Exported Variables

Time of First Successful Submission: 2025-04-15 10:08:32

Storing Command Output

Time of First Successful Submission: 2025-04-15 10:11:31

Reading Input

Time of First Successful Submission: 2025-04-15 10:12:18

Reading Files

Time of First Successful Submission: 2025-04-15 10:14:02

Listing Processes

Time of First Successful Submission: 2025-04-15 10:23:09

Killing Processes

Time of First Successful Submission: 2025-04-15 10:25:53

Interrupting Processes

Time of First Successful Submission: 2025-04-15 10:28:06

Suspending Processes

Time of First Successful Submission: 2025-04-15 10:29:27

Resuming Processes

Time of First Successful Submission: 2025-04-15 10:30:39

Backgrounding Processes

Time of First Successful Submission: 2025-04-15 10:34:37

Foregrounding Processes

Time of First Successful Submission: 2025-04-15 10:35:28

Starting Backgrounded Processes

Time of First Successful Submission: 2025-04-15 10:37:53

Process Exit Codes

Time of First Successful Submission: 2025-04-15 10:53:43

Becoming root with su

Time of First Successful Submission: 2025-04-15 14:15:03

Other users with su

Time of First Successful Submission: 2025-04-15 14:15:50

Cracking passwords

Time of First Successful Submission: 2025-04-15 14:23:36

Using sudo

Time of First Successful Submission: 2025-04-15 14:30:51

Changing File Ownership

Time of First Successful Submission: 2025-04-15 10:58:29

Groups and Files

Time of First Successful Submission: 2025-04-15 10:59:48

Fun With Groups Names

Time of First Successful Submission: 2025-04-15 11:02:33

Changing Permissions

Time of First Successful Submission: 2025-04-15 11:04:04

Executable Files

Time of First Successful Submission: 2025-04-15 11:06:11

Permission Tweaking Practice

Time of First Successful Submission: 2025-04-15 11:10:02

Permissions Setting Practice

Time of First Successful Submission: 2025-04-15 11:13:08

The SUID Bit

Time of First Successful Submission: 2025-04-15 13:07:47

Chaining with Semicolons

Time of First Successful Submission: 2025-04-15 14:31:47

Your First Shell Script

Time of First Successful Submission: 2025-04-15 14:34:46

Redirecting Script Output

Time of First Successful Submission: 2025-04-15 14:36:40

Executable Shell Scripts

Time of First Successful Submission: 2025-04-15 14:37:51

The PATH Variable

Time of First Successful Submission: 2025-04-15 14:42:35

Setting PATH

Time of First Successful Submission: 2025-04-15 14:44:13

Adding Commands

Time of First Successful Submission: 2025-04-15 14:52:47

Hijacking Commands

Time of First Successful Submission: 2025-04-15 15:03:05

Computing 101

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Your First Register

Time of First Successful Submission: 2025-04-17 11:03:01

Your First Syscall

Time of First Successful Submission: 2025-04-17 11:07:15

Exit Codes

Time of First Successful Submission: 2025-04-17 11:09:40

Building Executables

Time of First Successful Submission: 2025-04-17 14:51:54

Moving Between Registers

Time of First Successful Submission: 2025-04-17 15:01:43

Loading From Memory

Time of First Successful Submission: 2025-04-19 10:10:00

More Loading Practice

Time of First Successful Submission: 2025-04-19 10:11:16

Dereferencing Pointers

Time of First Successful Submission: 2025-04-19 10:13:55

Dereferencing Yourself

Time of First Successful Submission: 2025-04-19 10:15:29

Dereferencing with Offsets

Time of First Successful Submission: 2025-04-19 10:18:25

Stored Addresses

Time of First Successful Submission: 2025-04-19 10:24:48

Double Dereference

Time of First Successful Submission: 2025-04-19 10:27:40

The Stack

Time of First Successful Submission: 2026-09-07 15:03:46

Stack Offsets

Time of First Successful Submission: 2026-09-07 15:08:09

Program Arguments on the Stack

Time of First Successful Submission: 2026-09-07 15:11:39

Popping From the Stack

Time of First Successful Submission: 2026-09-07 15:17:46

Negative Numbers

Time of First Successful Submission: 2026-09-08 04:02:09

Negative Numbers (16-bit)

Time of First Successful Submission: 2026-09-08 04:07:49

Negative Numbers (32-bit)

Time of First Successful Submission: 2026-09-08 04:11:42

Encoding Negatives

Time of First Successful Submission: 2026-09-08 04:21:37

Disassembling Programs

Time of First Successful Submission: 2026-09-08 04:34:14

Tracing Syscalls

Time of First Successful Submission: 2025-04-17 15:49:21

Starting GDB

Time of First Successful Submission: 2025-04-17 15:51:29

Quitting GDB

Time of First Successful Submission: 2026-09-08 04:42:56

Starting Programs in GDB

Time of First Successful Submission: 2025-04-17 15:53:52

Disassembling in GDB

Time of First Successful Submission: 2026-09-08 04:47:37

Stepping Through Instructions

Time of First Successful Submission: 2026-09-08 04:50:02

Reading Register Values

Time of First Successful Submission: 2026-09-08 04:51:04

Setting Register Values

Time of First Successful Submission: 2026-09-08 04:53:47

Popping Stack Values

Time of First Successful Submission: 2026-09-08 04:55:25

Examining Memory

Time of First Successful Submission: 2026-09-08 04:58:02

Examining Stack Pointers

Time of First Successful Submission: 2026-09-08 05:00:38

Cooperative Debugging

Time of First Successful Submission: 2026-09-08 05:08:50

Running with Arguments

Time of First Successful Submission: 2026-09-08 05:10:03

Redirecting Input in GDB

Time of First Successful Submission: 2026-09-08 05:12:05

Writing Output

Time of First Successful Submission: 2025-04-19 14:45:50

Chaining Syscalls

Time of First Successful Submission: 2025-04-19 14:47:24

Writing Strings

Time of First Successful Submission: 2025-04-19 14:48:37

Reading Data

Time of First Successful Submission: 2025-04-19 14:56:16

Reading Exactly

Time of First Successful Submission: 2026-09-08 08:48:58

Opening Files

Time of First Successful Submission: 2026-09-08 08:59:49

Hardcoding the Filename

Time of First Successful Submission: 2026-09-08 09:06:39

RIP-Relative Strings

Time of First Successful Submission: 2026-09-08 09:20:11

Comparing Values

Time of First Successful Submission: 2026-09-08 09:33:49

Comparing Characters

Time of First Successful Submission: 2026-09-08 09:36:03

Conditional Control Flow

Time of First Successful Submission: 2026-09-08 09:41:39

Comparing Strings

Time of First Successful Submission: 2026-09-08 09:43:30

Reverse the Password

Time of First Successful Submission: 2026-09-08 09:49:37

Conditionals Without Conditionals

Time of First Successful Submission: 2026-09-09 07:15:34

Recognizing Loops

Time of First Successful Submission: 2026-09-09 07:21:59

Writing Loops

Time of First Successful Submission: 2026-09-09 07:33:14

Writing From a Shared Library

Time of First Successful Submission: 2026-09-09 07:48:06

Returning a Value

Time of First Successful Submission: 2026-09-09 07:54:42

Calling Through a Pointer

Time of First Successful Submission: 2026-09-09 08:09:52

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-09-09 08:14:10

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-09-09 08:24:26

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-09-09 08:31:21

Sign Extension

Time of First Successful Submission: 2026-09-11 06:45:41

Little-Endian Bytes

Time of First Successful Submission: 2026-09-11 06:52:39

Qword by Qword

Time of First Successful Submission: 2026-09-11 07:02:40

Dword by Dword

Time of First Successful Submission: 2026-09-11 07:05:29

Word by Word

Time of First Successful Submission: 2026-09-11 07:07:25

Byte by Byte

Time of First Successful Submission: 2026-09-11 07:09:47

Cracking a Struct

Time of First Successful Submission: 2026-09-11 07:18:04

Scrambled Struct

Time of First Successful Submission: 2026-09-11 07:22:11

Reverse the Calculation

Time of First Successful Submission: 2026-09-16 08:25:51

Reverse the Reverse

Time of First Successful Submission: 2026-09-16 08:27:11

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-09-16 08:28:38

Even or Odd

Time of First Successful Submission: 2026-09-16 08:35:41

Masking Bits

Time of First Successful Submission: 2026-09-16 08:40:08

Lowercase a String

Time of First Successful Submission: 2026-09-16 08:46:41

Uppercase a String

Time of First Successful Submission: 2026-09-16 08:54:29

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-09-16 09:24:14

Loading Stale Stack Data

Time of First Successful Submission: 2026-09-16 10:00:43

Stealing Stale Stack Data

Time of First Successful Submission: 2026-09-18 02:32:00

Reserving Your Own Frame

Time of First Successful Submission: 2026-09-18 02:42:36

Using Your Own Frame

Time of First Successful Submission: 2026-09-18 02:59:37

Environment Variables on the Stack

Time of First Successful Submission: 2026-09-18 03:14:25

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-09-18 03:27:30

Debugging Programs

Time of First Successful Submission: 2025-06-28 03:24:02

Inspecting Registers

Time of First Successful Submission: 2025-06-28 03:25:39

Examining Memory

Time of First Successful Submission: 2025-06-28 03:54:58

Setting Breakpoints

Time of First Successful Submission: 2025-07-01 12:59:56

GDB Scripting

Time of First Successful Submission: 2025-07-01 13:15:40

Modifying Data

Time of First Successful Submission: 2025-07-01 14:19:44

Modifying Execution

Time of First Successful Submission: 2025-07-01 15:09:20

Broken Functions

Time of First Successful Submission: 2025-07-01 15:19:32

Exit

Time of First Successful Submission: 2025-07-03 03:57:51

Socket

Time of First Successful Submission: 2025-07-03 04:06:14

Bind

Time of First Successful Submission: 2025-07-03 04:20:30

Listen

Time of First Successful Submission: 2025-07-03 04:23:54

Accept

Time of First Successful Submission: 2025-07-03 04:27:39

Static Response

Time of First Successful Submission: 2025-07-03 04:38:44

Dynamic Response

Time of First Successful Submission: 2025-07-03 10:05:52

Iterative GET Server

Time of First Successful Submission: 2025-07-03 10:17:39

Concurrent GET Server

Time of First Successful Submission: 2025-07-03 10:43:22

Concurrent POST Server

Time of First Successful Submission: 2025-07-04 04:42:58

Web Server

Time of First Successful Submission: 2025-07-04 04:57:29

Playing With Programs

11 / 116 19425 / 26497

What's the password?

Time of First Successful Submission: 2025-07-07 03:34:16

... and again!

Time of First Successful Submission: 2025-07-07 03:34:57

Newline Troubles

Time of First Successful Submission: 2025-07-07 03:40:48

Reasoning about files

Time of First Successful Submission: 2025-07-07 03:42:21

Specifying Filenames

Time of First Successful Submission: 2025-07-07 03:43:20

Binary and Hex Encoding

Time of First Successful Submission: 2025-07-07 04:10:30

More Hex

Time of First Successful Submission: 2025-07-07 04:11:27

Decoding Hex

Time of First Successful Submission: 2025-07-07 04:30:08

Decoding Practice

Time of First Successful Submission: 2025-07-07 04:32:02

Encoding Practice

Time of First Successful Submission: 2025-07-07 04:46:20

Hex-encoding ASCII

Time of First Successful Submission: 2025-07-07 04:52:31

DSU Cyber Camps

9 / 104 30074 / 68007

Using the VSCode Workspace

Time of First Successful Submission: 2025-04-08 10:22:38

Using the GUI Desktop

Time of First Successful Submission: 2025-04-08 10:25:28

Restarting Challenges

Time of First Successful Submission: 2025-04-08 10:30:58

Getting Help

Time of First Successful Submission: 2025-04-08 10:34:37

Challenge Programs

Time of First Successful Submission: 2025-04-08 10:36:07

The Flag File

Time of First Successful Submission: 2025-04-08 10:39:24

Using Privileged Mode

Time of First Successful Submission: 2025-04-08 10:42:36

Persistent Home Directories - One

Time of First Successful Submission: 2025-04-08 10:47:03

Persistent Home Directories - Two

Time of First Successful Submission: 2025-04-08 10:48:02

GCA CTF

9 / 104 30074 / 68007

Using the VSCode Workspace

Time of First Successful Submission: 2025-04-08 10:22:38

Using the GUI Desktop

Time of First Successful Submission: 2025-04-08 10:25:28

Restarting Challenges

Time of First Successful Submission: 2025-04-08 10:30:58

Getting Help

Time of First Successful Submission: 2025-04-08 10:34:37

Challenge Programs

Time of First Successful Submission: 2025-04-08 10:36:07

The Flag File

Time of First Successful Submission: 2025-04-08 10:39:24

Using Privileged Mode

Time of First Successful Submission: 2025-04-08 10:42:36

Persistent Home Directories - One

Time of First Successful Submission: 2025-04-08 10:47:03

Persistent Home Directories - Two

Time of First Successful Submission: 2025-04-08 10:48:02