lydiob7

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Argentina

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-09-22 20:44:03

Command Arguments

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Command History

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The Root Path

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Absolute Paths

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Changing position

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Changing to an Absolute Path

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Relative Paths

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Cat

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Ls

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Ls All

Time of First Successful Submission: 2026-09-22 21:00:48

Find

Time of First Successful Submission: 2026-09-21 06:38:24

Piping Echo

Time of First Successful Submission: 2026-09-21 21:39:49

Piping Stdout

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Piping Stdin

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Start Here

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Using the Terminal

Time of First Successful Submission: 2026-09-20 21:50:45

Using the VSCode Workspace

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Using the GUI Desktop

Time of First Successful Submission: 2026-09-20 21:55:24

Pasting into the Desktop

Time of First Successful Submission: 2026-09-20 21:58:03

Restarting Challenges

Time of First Successful Submission: 2026-09-20 22:02:44

Challenge Programs

Time of First Successful Submission: 2026-09-20 22:08:41

The Flag File

Time of First Successful Submission: 2026-09-20 22:10:40

Using Privileged Mode

Time of First Successful Submission: 2026-09-20 22:13:48

Persistent Home Directories - One

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Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-20 22:17:52

Linux Luminarium

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Intro to Commands

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Intro to Arguments

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Command History

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The Root

Time of First Successful Submission: 2026-09-22 20:45:41

Program and absolute paths

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Position thy self

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Position elsewhere

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implicit relative paths, from /

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explicit relative paths, from /

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implicit relative path

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home sweet home

Time of First Successful Submission: 2026-09-22 20:53:24

cat: not the pet, but the command!

Time of First Successful Submission: 2026-09-22 20:54:09

catting absolute paths

Time of First Successful Submission: 2026-09-22 20:54:43

more catting practice

Time of First Successful Submission: 2026-09-22 20:55:36

grepping for a needle in a haystack

Time of First Successful Submission: 2026-09-21 06:22:06

comparing files

Time of First Successful Submission: 2026-09-21 06:24:22

listing files

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touching files

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removing files

Time of First Successful Submission: 2026-09-22 20:57:53

moving files

Time of First Successful Submission: 2026-09-22 20:58:44

copying files

Time of First Successful Submission: 2026-09-22 21:00:06

hidden files

Time of First Successful Submission: 2026-09-22 21:00:48

An Epic Filesystem Quest

Time of First Successful Submission: 2026-09-21 06:33:33

making directories

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finding files

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linking files

Time of First Successful Submission: 2026-09-21 06:52:13

Learning From Documentation

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Learning Complex Usage

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Reading Manuals

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Searching Manuals

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Searching For Manuals

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Helpful Programs

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Help for Builtins

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Matching with *

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Matching with ?

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Matching with []

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Matching paths with []

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Multiple globs

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Mixing globs

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Exclusionary globbing

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Tab completion

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Multiple options for tab completion

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Tab completion on commands

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Redirecting output

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Redirecting more output

Time of First Successful Submission: 2026-09-21 21:42:10

Appending output

Time of First Successful Submission: 2026-09-21 21:44:30

Redirecting errors

Time of First Successful Submission: 2026-09-21 21:47:18

Redirecting input

Time of First Successful Submission: 2026-09-21 21:49:20

Grepping stored results

Time of First Successful Submission: 2026-09-21 21:51:59

Grepping live output

Time of First Successful Submission: 2026-09-21 21:53:22

Grepping errors

Time of First Successful Submission: 2026-09-21 21:56:19

Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

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Process substitution for input

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Writing to multiple programs

Time of First Successful Submission: 2026-09-21 22:14:28

Split-piping stderr and stdout

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Named pipes

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Printing Variables

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Setting Variables

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Multi-word Variables

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Exporting Variables

Time of First Successful Submission: 2026-09-22 07:13:46

Printing Exported Variables

Time of First Successful Submission: 2026-09-22 07:14:36

Storing Command Output

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Reading Input

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Reading Files

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Translating characters

Time of First Successful Submission: 2026-09-22 08:26:41

Deleting characters

Time of First Successful Submission: 2026-09-22 08:28:05

Deleting newlines

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Extracting the first lines with head

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Extracting specific sections of text

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Sorting data

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Listing Processes

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Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

Time of First Successful Submission: 2026-09-22 12:20:16

Suspending Processes

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Resuming Processes

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Backgrounding Processes

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Foregrounding Processes

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Starting Backgrounded Processes

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Process Exit Codes

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Becoming root with su

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Other users with su

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Cracking passwords

Time of First Successful Submission: 2026-09-22 12:57:31

Using sudo

Time of First Successful Submission: 2026-09-22 13:05:09

Changing File Ownership

Time of First Successful Submission: 2026-09-22 17:20:01

Groups and Files

Time of First Successful Submission: 2026-09-22 17:26:39

Fun With Groups Names

Time of First Successful Submission: 2026-09-22 17:29:16

Changing Permissions

Time of First Successful Submission: 2026-09-22 19:12:49

Executable Files

Time of First Successful Submission: 2026-09-22 19:29:54

Permission Tweaking Practice

Time of First Successful Submission: 2026-09-22 19:40:11

Permissions Setting Practice

Time of First Successful Submission: 2026-09-22 19:44:48

The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

Time of First Successful Submission: 2026-09-22 20:06:27

Your First Shell Script

Time of First Successful Submission: 2026-09-22 20:09:11

Redirecting Script Output

Time of First Successful Submission: 2026-09-22 20:12:20

Executable Shell Scripts

Time of First Successful Submission: 2026-09-22 20:14:19

Understanding Shebangs

Time of First Successful Submission: 2026-09-22 20:19:45

Scripting with Arguments

Time of First Successful Submission: 2026-09-22 20:22:36

Scripting with Conditionals

Time of First Successful Submission: 2026-09-22 20:26:42

Scripting with Default Cases

Time of First Successful Submission: 2026-09-22 20:29:05

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-09-22 20:31:46

Reading Shell Scripts

Time of First Successful Submission: 2026-09-22 20:37:49

Launching Screen

Time of First Successful Submission: 2026-09-22 21:03:45

Detaching and Attaching

Time of First Successful Submission: 2026-09-22 21:06:01

Finding Sessions

Time of First Successful Submission: 2026-09-22 21:09:04

Switching Windows

Time of First Successful Submission: 2026-09-22 21:10:56

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-09-22 21:14:38

Switching Windows (tmux)

Time of First Successful Submission: 2026-09-22 21:19:20

The PATH Variable

Time of First Successful Submission: 2026-09-23 14:19:05

Setting PATH

Time of First Successful Submission: 2026-09-23 15:15:12

Finding Commands

Time of First Successful Submission: 2026-09-23 15:16:56

Adding Commands

Time of First Successful Submission: 2026-09-23 15:21:55

Hijacking Commands

Time of First Successful Submission: 2026-09-23 15:25:03

Bashrc Backdoor

Time of First Successful Submission: 2026-09-23 15:35:18

Sniffing Input

Time of First Successful Submission: 2026-09-23 15:47:35

Overshared Directories

Time of First Successful Submission: 2026-09-23 15:54:11

Tricky Linking

Time of First Successful Submission: 2026-09-23 15:59:59

Sniffing Process Arguments

Time of First Successful Submission: 2026-09-23 16:04:43

Snooping on Configurations

Time of First Successful Submission: 2026-09-23 16:11:06

The Fork Bomb

Time of First Successful Submission: 2026-09-26 09:55:39

Disk-Space Doomsday

Time of First Successful Submission: 2026-09-24 12:43:13

rm -rf /

Time of First Successful Submission: 2026-09-24 12:46:14

Life after rm -rf /

Time of First Successful Submission: 2026-09-24 12:51:01

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-09-24 13:04:53

Computing 101

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Your First Register

Time of First Successful Submission: 2026-09-25 10:57:39

Your First Syscall

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Exit Codes

Time of First Successful Submission: 2026-09-25 11:02:01

Building Executables

Time of First Successful Submission: 2026-09-25 11:09:45

Moving Between Registers

Time of First Successful Submission: 2026-09-25 11:13:05

Loading From Memory

Time of First Successful Submission: 2026-09-25 11:49:42

More Loading Practice

Time of First Successful Submission: 2026-09-25 11:51:50

Dereferencing Pointers

Time of First Successful Submission: 2026-09-25 12:01:59

Dereferencing Yourself

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Dereferencing with Offsets

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Stored Addresses

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Double Dereference

Time of First Successful Submission: 2026-09-25 12:24:51

The Stack

Time of First Successful Submission: 2026-09-25 13:07:10

Stack Offsets

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Program Arguments on the Stack

Time of First Successful Submission: 2026-09-25 13:18:36

Popping From the Stack

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Negative Numbers

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Negative Numbers (16-bit)

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Negative Numbers (32-bit)

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Encoding Negatives

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Binary and Hex Encoding

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More Hex

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Decoding Hex

Time of First Successful Submission: 2026-09-25 14:27:00

Mixed Conversions

Time of First Successful Submission: 2026-09-25 15:18:24

Disassembling Programs

Time of First Successful Submission: 2026-09-26 08:11:44

Tracing Syscalls

Time of First Successful Submission: 2026-09-26 08:17:12

Starting GDB

Time of First Successful Submission: 2026-09-26 08:20:33

Quitting GDB

Time of First Successful Submission: 2026-09-26 08:21:22

Starting Programs in GDB

Time of First Successful Submission: 2026-09-26 08:23:56

Disassembling in GDB

Time of First Successful Submission: 2026-09-26 08:24:58

Stepping Through Instructions

Time of First Successful Submission: 2026-09-26 08:30:44

Reading Register Values

Time of First Successful Submission: 2026-09-26 08:32:10

Setting Register Values

Time of First Successful Submission: 2026-09-26 08:34:19

Popping Stack Values

Time of First Successful Submission: 2026-09-26 08:36:30

Examining Memory

Time of First Successful Submission: 2026-09-26 08:39:19

Examining Stack Pointers

Time of First Successful Submission: 2026-09-26 08:42:41

Cooperative Debugging

Time of First Successful Submission: 2026-09-26 08:49:11

Running with Arguments

Time of First Successful Submission: 2026-09-26 08:51:28

Redirecting Input in GDB

Time of First Successful Submission: 2026-09-26 08:53:58

Writing Output

Time of First Successful Submission: 2026-09-26 11:43:10

Chaining Syscalls

Time of First Successful Submission: 2026-09-26 11:44:58

Writing Strings

Time of First Successful Submission: 2026-09-26 11:46:40

Reading Data

Time of First Successful Submission: 2026-09-26 12:16:54

Reading Exactly

Time of First Successful Submission: 2026-09-26 12:23:19

Opening Files

Time of First Successful Submission: 2026-09-26 12:29:23

Hardcoding the Filename

Time of First Successful Submission: 2026-09-26 12:36:25

RIP-Relative Strings

Time of First Successful Submission: 2026-09-26 12:44:57

Comparing Values

Time of First Successful Submission: 2026-09-26 13:29:13

Comparing Characters

Time of First Successful Submission: 2026-09-26 13:37:16

Conditional Control Flow

Time of First Successful Submission: 2026-09-26 13:50:41

Comparing Strings

Time of First Successful Submission: 2026-09-26 13:55:25

Reverse the Password

Time of First Successful Submission: 2026-09-26 14:06:22

Conditionals Without Conditionals

Time of First Successful Submission: 2026-09-26 15:10:00

Recognizing Loops

Time of First Successful Submission: 2026-09-26 18:18:04

Writing Loops

Time of First Successful Submission: 2026-09-26 18:39:45

Writing From a Shared Library

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

Returning a Value

Time of First Successful Submission: 2026-09-27 09:32:31

Calling Through a Pointer

Time of First Successful Submission: 2026-09-27 09:37:18

Calling Through a Pointer with an Argument

Time of First Successful Submission: 2026-09-27 09:39:34

Saving Caller-Saved Registers

Time of First Successful Submission: 2026-09-27 09:47:32

Saving Callee-Saved Registers

Time of First Successful Submission: 2026-09-27 09:53:36

Sign Extension

Time of First Successful Submission: 2026-09-27 13:54:49

Little-Endian Bytes

Time of First Successful Submission: 2026-09-27 13:59:29

Qword by Qword

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Dword by Dword

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Word by Word

Time of First Successful Submission: 2026-09-27 14:41:39

Byte by Byte

Time of First Successful Submission: 2026-09-27 14:46:13

Cracking a Struct

Time of First Successful Submission: 2026-09-27 14:54:47

Scrambled Struct

Time of First Successful Submission: 2026-09-27 15:07:09

Reverse the Calculation

Time of First Successful Submission: 2026-09-27 15:13:27

Reverse the Reverse

Time of First Successful Submission: 2026-09-27 15:15:01

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-09-27 15:23:36

Even or Odd

Time of First Successful Submission: 2026-09-27 15:31:20

Masking Bits

Time of First Successful Submission: 2026-09-27 22:10:49

Lowercase a String

Time of First Successful Submission: 2026-09-27 22:14:59

Uppercase a String

Time of First Successful Submission: 2026-09-27 22:33:05

Swap Case

Time of First Successful Submission: 2026-09-28 09:15:53

Shifting Left

Time of First Successful Submission: 2026-09-28 09:21:41

Shifting Right

Time of First Successful Submission: 2026-09-28 10:24:25

Loops on Data

Time of First Successful Submission: 2026-09-28 10:35:40

Reaching Into the Caller's Frame

Time of First Successful Submission: 2026-09-28 12:14:03

Loading Stale Stack Data

Time of First Successful Submission: 2026-09-28 12:38:08

Stealing Stale Stack Data

Time of First Successful Submission: 2026-09-28 12:43:20

Reserving Your Own Frame

Time of First Successful Submission: 2026-09-28 12:58:08

Using Your Own Frame

Time of First Successful Submission: 2026-09-28 14:44:10

Environment Variables on the Stack

Time of First Successful Submission: 2026-09-28 15:02:06

Aligning the Stack Through the Environment

Time of First Successful Submission: 2026-09-28 15:08:01

Aligning the Stack Through GDB

Time of First Successful Submission: 2026-09-28 15:14:22

Aligning the Stack Through GDB, Generalized

Time of First Successful Submission: 2026-09-28 15:20:31

A Single Digit

Time of First Successful Submission: 2026-09-28 16:18:47

Two Digits

Time of First Successful Submission: 2026-09-28 17:42:27

String to Integer

Time of First Successful Submission: 2026-09-29 16:33:54

Negative Numbers

Time of First Successful Submission: 2026-09-29 19:40:25

Where the Number Ends

Time of First Successful Submission: 2026-09-29 20:16:02

A Whole Program

Time of First Successful Submission: 2026-09-29 20:19:28

A Single Digit, Back to Text

Time of First Successful Submission: 2026-09-29 20:32:27

Divide and Remainder

Time of First Successful Submission: 2026-09-29 21:18:19

Drop the Leading Zero

Time of First Successful Submission: 2026-09-29 21:30:10

Integer to String

Time of First Successful Submission: 2026-09-30 14:18:13

Negative Numbers, Back to Text

Time of First Successful Submission: 2026-09-30 14:45:08

Sum Them All

Time of First Successful Submission: 2026-10-01 15:44:44

Addition

Time of First Successful Submission: 2026-10-02 07:34:45

Subtraction

Time of First Successful Submission: 2026-10-02 07:40:58

Multiplication

Time of First Successful Submission: 2026-10-02 07:43:52

Bitwise Operators

Time of First Successful Submission: 2026-10-02 07:59:34

Unary Operators

Time of First Successful Submission: 2026-10-02 08:16:35

Literal Output

Time of First Successful Submission: 2026-10-02 09:00:49

Newline Escapes

Time of First Successful Submission: 2026-10-02 15:10:21

Escaped Syntax

Time of First Successful Submission: 2026-10-02 17:13:56

Decimal Markers

Time of First Successful Submission: 2026-10-03 10:32:16

Multiple Decimal Markers

Time of First Successful Submission: 2026-10-03 10:37:01

String Markers

Time of First Successful Submission: 2026-10-03 12:11:23

Hex Byte Escapes

Time of First Successful Submission: 2026-10-03 14:47:54

Debugging Programs

Time of First Successful Submission: 2026-10-04 10:01:08

Inspecting Registers

Time of First Successful Submission: 2026-10-04 10:03:34

Examining Memory

Time of First Successful Submission: 2026-10-04 13:56:43

Setting Breakpoints

Time of First Successful Submission: 2026-10-13 18:56:15

GDB Scripting

Time of First Successful Submission: 2026-10-14 15:15:56

Modifying Data

Time of First Successful Submission: 2026-10-15 08:13:51

Modifying Execution

Time of First Successful Submission: 2026-10-15 08:16:24

Broken Functions

Time of First Successful Submission: 2026-10-15 08:58:22

Exit

Time of First Successful Submission: 2026-10-15 13:40:13

Socket

Time of First Successful Submission: 2026-10-15 14:48:54

Bind

Time of First Successful Submission: 2026-10-15 15:19:41

Listen

Time of First Successful Submission: 2026-10-15 15:30:30

Accept

Time of First Successful Submission: 2026-10-15 15:49:04

Static Response

Time of First Successful Submission: 2026-10-16 15:54:55

Dynamic Response

Time of First Successful Submission: 2026-10-18 10:37:42

Iterative GET Server

Time of First Successful Submission: 2026-10-18 10:47:09

Concurrent GET Server

Time of First Successful Submission: 2026-10-19 09:36:11

Concurrent POST Server

Time of First Successful Submission: 2026-10-23 10:52:38

Web Server

Time of First Successful Submission: 2026-10-23 10:53:20

Playing With Programs

3 / 116 24226 / 27075

What's the password?

Time of First Successful Submission: 2026-10-23 12:35:51

... and again!

Time of First Successful Submission: 2026-10-23 12:36:31

Newline Troubles

Time of First Successful Submission: 2026-10-23 12:39:45

DSU Cyber Camps

12 / 104 5595 / 73424

Using the Terminal

Time of First Successful Submission: 2026-09-20 21:50:45

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-20 21:53:00

Using the GUI Desktop

Time of First Successful Submission: 2026-09-20 21:55:24

Pasting into the Desktop

Time of First Successful Submission: 2026-09-20 21:58:03

Connecting over SSH

Time of First Successful Submission: 2026-09-20 22:00:34

Restarting Challenges

Time of First Successful Submission: 2026-09-20 22:02:44

Getting Help

Time of First Successful Submission: 2026-09-20 22:05:45

Challenge Programs

Time of First Successful Submission: 2026-09-20 22:08:41

The Flag File

Time of First Successful Submission: 2026-09-20 22:10:40

Using Privileged Mode

Time of First Successful Submission: 2026-09-20 22:13:48

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-20 22:16:57

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-20 22:17:52

GCA CTF

12 / 104 5595 / 73422

Using the Terminal

Time of First Successful Submission: 2026-09-20 21:50:45

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-20 21:53:00

Using the GUI Desktop

Time of First Successful Submission: 2026-09-20 21:55:24

Pasting into the Desktop

Time of First Successful Submission: 2026-09-20 21:58:03

Connecting over SSH

Time of First Successful Submission: 2026-09-20 22:00:34

Restarting Challenges

Time of First Successful Submission: 2026-09-20 22:02:44

Getting Help

Time of First Successful Submission: 2026-09-20 22:05:45

Challenge Programs

Time of First Successful Submission: 2026-09-20 22:08:41

The Flag File

Time of First Successful Submission: 2026-09-20 22:10:40

Using Privileged Mode

Time of First Successful Submission: 2026-09-20 22:13:48

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-20 22:16:57

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-20 22:17:52