Noyko12

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-09-06 09:58:03

Command Arguments

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Command History

Time of First Successful Submission: 2026-09-06 10:00:21

The Root Path

Time of First Successful Submission: 2026-09-06 10:02:00

Absolute Paths

Time of First Successful Submission: 2026-09-06 10:03:29

Changing position

Time of First Successful Submission: 2026-09-06 10:05:31

Changing to an Absolute Path

Time of First Successful Submission: 2026-09-06 10:07:51

Relative Paths

Time of First Successful Submission: 2026-09-06 10:10:24

Cat

Time of First Successful Submission: 2026-09-06 10:31:55

Ls

Time of First Successful Submission: 2026-09-06 10:50:25

Ls All

Time of First Successful Submission: 2026-09-06 11:07:55

Find

Time of First Successful Submission: 2026-09-06 11:20:39

Piping Echo

Time of First Successful Submission: 2026-09-07 08:38:01

Piping Stdout

Time of First Successful Submission: 2026-09-07 08:40:19

Piping Stdin

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Start Here

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Using the Terminal

Time of First Successful Submission: 2026-09-06 08:51:11

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-06 08:53:20

Using the GUI Desktop

Time of First Successful Submission: 2026-09-06 08:57:39

Pasting into the Desktop

Time of First Successful Submission: 2026-09-06 09:10:39

Restarting Challenges

Time of First Successful Submission: 2026-09-06 09:22:32

Challenge Programs

Time of First Successful Submission: 2026-09-06 09:26:04

The Flag File

Time of First Successful Submission: 2026-09-06 09:39:53

Using Privileged Mode

Time of First Successful Submission: 2026-09-06 09:43:41

Persistent Home Directories - One

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Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-06 09:52:02

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-09-06 09:58:03

Intro to Arguments

Time of First Successful Submission: 2026-09-06 09:59:23

Command History

Time of First Successful Submission: 2026-09-06 10:00:21

The Root

Time of First Successful Submission: 2026-09-06 10:02:00

Program and absolute paths

Time of First Successful Submission: 2026-09-06 10:03:29

Position thy self

Time of First Successful Submission: 2026-09-06 10:05:31

Position elsewhere

Time of First Successful Submission: 2026-09-06 10:07:51

implicit relative paths, from /

Time of First Successful Submission: 2026-09-06 10:10:24

explicit relative paths, from /

Time of First Successful Submission: 2026-09-06 10:11:52

implicit relative path

Time of First Successful Submission: 2026-09-06 10:13:56

home sweet home

Time of First Successful Submission: 2026-09-06 10:17:29

cat: not the pet, but the command!

Time of First Successful Submission: 2026-09-06 10:31:55

catting absolute paths

Time of First Successful Submission: 2026-09-06 10:32:51

more catting practice

Time of First Successful Submission: 2026-09-06 10:34:04

grepping for a needle in a haystack

Time of First Successful Submission: 2026-09-06 10:35:50

comparing files

Time of First Successful Submission: 2026-09-06 10:47:30

listing files

Time of First Successful Submission: 2026-09-06 10:50:25

touching files

Time of First Successful Submission: 2026-09-06 10:52:01

removing files

Time of First Successful Submission: 2026-09-06 10:53:08

moving files

Time of First Successful Submission: 2026-09-06 11:05:06

copying files

Time of First Successful Submission: 2026-09-06 11:06:40

hidden files

Time of First Successful Submission: 2026-09-06 11:07:55

An Epic Filesystem Quest

Time of First Successful Submission: 2026-09-06 11:15:38

making directories

Time of First Successful Submission: 2026-09-06 11:17:19

finding files

Time of First Successful Submission: 2026-09-06 11:20:39

linking files

Time of First Successful Submission: 2026-09-06 12:07:48

Learning From Documentation

Time of First Successful Submission: 2026-09-06 12:10:21

Learning Complex Usage

Time of First Successful Submission: 2026-09-06 12:12:36

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

Time of First Successful Submission: 2026-09-07 08:21:12

Tab completion on commands

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Redirecting output

Time of First Successful Submission: 2026-09-07 08:38:01

Redirecting more output

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Appending output

Time of First Successful Submission: 2026-09-07 08:43:04

Redirecting errors

Time of First Successful Submission: 2026-09-07 08:47:09

Redirecting input

Time of First Successful Submission: 2026-09-07 08:49:51

Grepping stored results

Time of First Successful Submission: 2026-09-07 08:54:22

Grepping live output

Time of First Successful Submission: 2026-09-07 08:56:19

Grepping errors

Time of First Successful Submission: 2026-09-07 09:00:53

Filtering with grep -v

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Filtering with sed

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Duplicating piped data with tee

Time of First Successful Submission: 2026-09-07 09:10:42

Process substitution for input

Time of First Successful Submission: 2026-09-07 09:23:57

Writing to multiple programs

Time of First Successful Submission: 2026-09-07 09:36:35

Split-piping stderr and stdout

Time of First Successful Submission: 2026-09-07 11:29:42

Named pipes

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Printing Variables

Time of First Successful Submission: 2026-09-07 12:12:16

Setting Variables

Time of First Successful Submission: 2026-09-07 12:14:30

Multi-word Variables

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Exporting Variables

Time of First Successful Submission: 2026-09-07 12:21:15

Printing Exported Variables

Time of First Successful Submission: 2026-09-07 12:22:06

Storing Command Output

Time of First Successful Submission: 2026-09-07 12:25:58

Reading Input

Time of First Successful Submission: 2026-09-07 12:32:50

Reading Files

Time of First Successful Submission: 2026-09-07 12:35:46

Translating characters

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Deleting characters

Time of First Successful Submission: 2026-09-07 12:41:38

Deleting newlines

Time of First Successful Submission: 2026-09-07 13:15:28

Extracting the first lines with head

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Extracting specific sections of text

Time of First Successful Submission: 2026-09-07 13:20:22

Sorting data

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Listing Processes

Time of First Successful Submission: 2026-09-07 13:28:23

Killing Processes

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Interrupting Processes

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Killing Misbehaving Processes

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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: 2026-09-07 14:27:28

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-09-07 14:46:33

Groups and Files

Time of First Successful Submission: 2026-09-07 14:51:29

Fun With Groups Names

Time of First Successful Submission: 2026-09-07 14:53:10

Changing Permissions

Time of First Successful Submission: 2026-09-07 14:59:43

Executable Files

Time of First Successful Submission: 2026-09-07 15:01:20

Permission Tweaking Practice

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Permissions Setting Practice

Time of First Successful Submission: 2026-09-07 15:16:46

The SUID Bit

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Chaining with Semicolons

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Building on Success

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Handling Failure

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Your First Shell Script

Time of First Successful Submission: 2026-09-07 20:29:17

Redirecting Script Output

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Executable Shell Scripts

Time of First Successful Submission: 2026-09-07 20:37:06

Understanding Shebangs

Time of First Successful Submission: 2026-09-07 20:52:40

Scripting with Arguments

Time of First Successful Submission: 2026-09-07 21:00:55

Scripting with Conditionals

Time of First Successful Submission: 2026-09-07 21:05:19

Scripting with Default Cases

Time of First Successful Submission: 2026-09-07 21:08:20

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-09-07 21:12:19

Reading Shell Scripts

Time of First Successful Submission: 2026-09-07 21:17:51

Launching Screen

Time of First Successful Submission: 2026-09-08 12:23:09

Detaching and Attaching

Time of First Successful Submission: 2026-09-08 12:25:32

Finding Sessions

Time of First Successful Submission: 2026-09-08 12:27:38

Switching Windows

Time of First Successful Submission: 2026-09-08 12:29:30

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-09-08 12:31:18

Switching Windows (tmux)

Time of First Successful Submission: 2026-09-08 12:32:55

The PATH Variable

Time of First Successful Submission: 2026-09-08 12:36:26

Setting PATH

Time of First Successful Submission: 2026-09-08 12:41:39

Finding Commands

Time of First Successful Submission: 2026-09-08 12:44:07

Adding Commands

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Hijacking Commands

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Bashrc Backdoor

Time of First Successful Submission: 2026-09-08 15:25:44

Sniffing Input

Time of First Successful Submission: 2026-09-08 19:41:53

Overshared Directories

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Tricky Linking

Time of First Successful Submission: 2026-09-08 20:11:51

Sniffing Process Arguments

Time of First Successful Submission: 2026-09-08 20:28:10

Snooping on Configurations

Time of First Successful Submission: 2026-09-08 20:30:43

The Fork Bomb

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Disk-Space Doomsday

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rm -rf /

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Life after rm -rf /

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Finding meaning after rm -rf /

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Computing 101

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Your First Register

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Your First Syscall

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Exit Codes

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Building Executables

Time of First Successful Submission: 2026-09-09 09:32:51

Moving Between Registers

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Loading From Memory

Time of First Successful Submission: 2026-09-09 09:59:28

More Loading Practice

Time of First Successful Submission: 2026-09-09 10:02:33

Dereferencing Pointers

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Dereferencing Yourself

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Dereferencing with Offsets

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Stored Addresses

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Double Dereference

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The Stack

Time of First Successful Submission: 2026-09-09 11:39:01

Stack Offsets

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Program Arguments on the Stack

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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

Time of First Successful Submission: 2026-09-09 13:30:58

More Hex

Time of First Successful Submission: 2026-09-09 13:33:53

Decoding Hex

Time of First Successful Submission: 2026-09-09 13:35:17

Mixed Conversions

Time of First Successful Submission: 2026-09-09 13:46:33

Disassembling Programs

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

Tracing Syscalls

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Starting GDB

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Quitting GDB

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Starting Programs in GDB

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Disassembling in GDB

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Stepping Through Instructions

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Reading Register Values

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Setting Register Values

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Popping Stack Values

Time of First Successful Submission: 2026-09-09 14:59:16

Examining Memory

Time of First Successful Submission: 2026-09-09 15:04:20

Examining Stack Pointers

Time of First Successful Submission: 2026-09-09 15:21:38

Cooperative Debugging

Time of First Successful Submission: 2026-09-09 15:43:59

Running with Arguments

Time of First Successful Submission: 2026-09-09 15:52:23

Redirecting Input in GDB

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

Writing Output

Time of First Successful Submission: 2026-09-10 07:03:22

Chaining Syscalls

Time of First Successful Submission: 2026-09-10 07:14:57

Writing Strings

Time of First Successful Submission: 2026-09-10 07:16:31

Reading Data

Time of First Successful Submission: 2026-09-10 12:15:55

Reading Exactly

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Opening Files

Time of First Successful Submission: 2026-09-10 13:21:09

Hardcoding the Filename

Time of First Successful Submission: 2026-09-10 13:07:17

RIP-Relative Strings

Time of First Successful Submission: 2026-09-10 13:18:44

Comparing Values

Time of First Successful Submission: 2026-09-11 08:10:32

Comparing Characters

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Conditional Control Flow

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Comparing Strings

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Reverse the Password

Time of First Successful Submission: 2026-09-11 08:42:52

Conditionals Without Conditionals

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Recognizing Loops

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Writing Loops

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Writing From a Shared Library

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Returning a Value

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Calling Through a Pointer

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Calling Through a Pointer with an Argument

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Saving Caller-Saved Registers

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Saving Callee-Saved Registers

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Sign Extension

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Little-Endian Bytes

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Qword by Qword

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Dword by Dword

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Word by Word

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Byte by Byte

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Cracking a Struct

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Scrambled Struct

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Reverse the Calculation

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Reverse the Reverse

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Dealing with Bitwise Operations

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Even or Odd

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Masking Bits

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Lowercase a String

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Uppercase a String

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Swap Case

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Shifting Left

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Shifting Right

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Loops on Data

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Reaching Into the Caller's Frame

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Loading Stale Stack Data

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Stealing Stale Stack Data

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Reserving Your Own Frame

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Using Your Own Frame

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Environment Variables on the Stack

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Aligning the Stack Through the Environment

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Aligning the Stack Through GDB

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Aligning the Stack Through GDB, Generalized

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A Single Digit

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Two Digits

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String to Integer

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Negative Numbers

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Where the Number Ends

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A Whole Program

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A Single Digit, Back to Text

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Divide and Remainder

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Drop the Leading Zero

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Integer to String

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Negative Numbers, Back to Text

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Sum Them All

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Addition

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Subtraction

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Multiplication

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Bitwise Operators

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Unary Operators

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Literal Output

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Newline Escapes

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Escaped Syntax

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Decimal Markers

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Multiple Decimal Markers

Time of First Successful Submission: 2026-10-16 09:58:35

String Markers

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Hex Byte Escapes

Time of First Successful Submission: 2026-10-16 10:22:28

Debugging Programs

Time of First Successful Submission: 2026-10-20 09:24:46

Inspecting Registers

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Examining Memory

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Setting Breakpoints

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GDB Scripting

Time of First Successful Submission: 2026-10-20 11:09:17

Modifying Data

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Modifying Execution

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Broken Functions

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Exit

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Socket

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Bind

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Listen

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Accept

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Static Response

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Dynamic Response

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Iterative GET Server

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Concurrent GET Server

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Concurrent POST Server

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Web Server

Time of First Successful Submission: 2026-10-21 10:39:13

Playing With Programs

10 / 116 20428 / 27039

What's the password?

Time of First Successful Submission: 2026-10-21 12:10:55

... and again!

Time of First Successful Submission: 2026-10-21 12:11:35

Newline Troubles

Time of First Successful Submission: 2026-10-21 12:15:13

Reasoning about files

Time of First Successful Submission: 2026-10-21 12:19:03

Specifying Filenames

Time of First Successful Submission: 2026-10-21 12:21:16

Binary and Hex Encoding

Time of First Successful Submission: 2026-10-21 12:28:22

More Hex

Time of First Successful Submission: 2026-10-21 12:29:52

Decoding Hex

Time of First Successful Submission: 2026-10-21 12:34:05

Decoding Practice

Time of First Successful Submission: 2026-10-21 16:32:43

Encoding Practice

Time of First Successful Submission: 2026-10-21 16:39:55

DSU Cyber Camps

11 / 104 15219 / 73060

Using the Terminal

Time of First Successful Submission: 2026-09-06 08:51:11

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-06 08:53:20

Using the GUI Desktop

Time of First Successful Submission: 2026-09-06 08:57:39

Pasting into the Desktop

Time of First Successful Submission: 2026-09-06 09:10:39

Connecting over SSH

Time of First Successful Submission: 2026-09-06 09:19:54

Restarting Challenges

Time of First Successful Submission: 2026-09-06 09:22:32

Challenge Programs

Time of First Successful Submission: 2026-09-06 09:26:04

The Flag File

Time of First Successful Submission: 2026-09-06 09:39:53

Using Privileged Mode

Time of First Successful Submission: 2026-09-06 09:43:41

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-06 09:51:14

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-06 09:52:02

GCA CTF

11 / 104 15219 / 73060

Using the Terminal

Time of First Successful Submission: 2026-09-06 08:51:11

Using the VSCode Workspace

Time of First Successful Submission: 2026-09-06 08:53:20

Using the GUI Desktop

Time of First Successful Submission: 2026-09-06 08:57:39

Pasting into the Desktop

Time of First Successful Submission: 2026-09-06 09:10:39

Connecting over SSH

Time of First Successful Submission: 2026-09-06 09:19:54

Restarting Challenges

Time of First Successful Submission: 2026-09-06 09:22:32

Challenge Programs

Time of First Successful Submission: 2026-09-06 09:26:04

The Flag File

Time of First Successful Submission: 2026-09-06 09:39:53

Using Privileged Mode

Time of First Successful Submission: 2026-09-06 09:43:41

Persistent Home Directories - One

Time of First Successful Submission: 2026-09-06 09:51:14

Persistent Home Directories - Two

Time of First Successful Submission: 2026-09-06 09:52:02