PoorJack

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2025-12-20 08:09:39

Command Arguments

Time of First Successful Submission: 2025-12-20 08:10:32

Cat

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Ls All

Time of First Successful Submission: 2025-12-20 08:41:28

Find

Time of First Successful Submission: 2025-12-20 08:47:22

Piping Echo

Time of First Successful Submission: 2025-12-20 11:47:16

Piping Stdout

Time of First Successful Submission: 2025-12-20 11:51:25

Piping Stdin

Time of First Successful Submission: 2025-12-20 12:05:20


Intro to Cybersecurity

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Your First Overflow (easy)

Time of First Successful Submission: 2025-12-21 01:38:39

Your First Overflow (hard)

Time of First Successful Submission: 2026-04-09 04:57:11

Precision (easy)

Time of First Successful Submission: 2026-04-14 11:25:33

Precision (hard)

Time of First Successful Submission: 2026-04-14 11:59:00


Program Security

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ello ackers!

Time of First Successful Submission: 2026-04-12 02:50:20

Syscall Smuggler

Time of First Successful Submission: 2026-04-12 05:14:20

Syscall Shenanigans

Time of First Successful Submission: 2026-04-12 06:04:16


Software Exploitation

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Level1.0

Time of First Successful Submission: 2026-04-17 09:59:11

Level1.1

Time of First Successful Submission: 2026-04-17 10:03:12

Level2.0

Time of First Successful Submission: 2026-04-17 10:17:28

Level2.1

Time of First Successful Submission: 2026-04-17 10:23:37

Level3.0

Time of First Successful Submission: 2026-04-17 12:05:05

Level3.1

Time of First Successful Submission: 2026-04-17 13:39:51

Level4.0

Time of First Successful Submission: 2026-04-17 14:06:26

Level4.1

Time of First Successful Submission: 2026-04-18 02:11:10

Level5.0

Time of First Successful Submission: 2026-04-18 07:29:47

Level5.1

Time of First Successful Submission: 2026-04-18 07:49:27

Level6.0

Time of First Successful Submission: 2026-04-21 12:06:19

Level6.1

Time of First Successful Submission: 2026-04-21 12:28:02


Start Here

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Using the Terminal

Time of First Successful Submission: 2025-12-20 07:20:48

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-20 07:24:03

Using the GUI Desktop

Time of First Successful Submission: 2025-12-20 07:28:48

Pasting into the Desktop

Time of First Successful Submission: 2025-12-20 07:42:55

Restarting Challenges

Time of First Successful Submission: 2025-12-20 07:46:44

Challenge Programs

Time of First Successful Submission: 2025-12-20 07:50:16

The Flag File

Time of First Successful Submission: 2025-12-20 07:51:52

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-20 08:01:56

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-20 08:02:31


Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2025-12-20 08:09:39

Intro to Arguments

Time of First Successful Submission: 2025-12-20 08:10:32

cat: not the pet, but the command!

Time of First Successful Submission: 2025-12-20 08:17:42

catting absolute paths

Time of First Successful Submission: 2025-12-20 08:21:39

more catting practice

Time of First Successful Submission: 2025-12-20 08:27:26

grepping for a needle in a haystack

Time of First Successful Submission: 2025-12-20 08:25:25

comparing files

Time of First Successful Submission: 2025-12-20 08:32:42

moving files

Time of First Successful Submission: 2025-12-20 08:35:08

hidden files

Time of First Successful Submission: 2025-12-20 08:41:28

making directories

Time of First Successful Submission: 2025-12-20 08:44:56

finding files

Time of First Successful Submission: 2025-12-20 08:47:22

linking files

Time of First Successful Submission: 2025-12-20 09:57:27

Learning From Documentation

Time of First Successful Submission: 2025-12-20 10:00:00

Learning Complex Usage

Time of First Successful Submission: 2025-12-20 10:05:08

Reading Manuals

Time of First Successful Submission: 2025-12-20 10:11:35

Searching Manuals

Time of First Successful Submission: 2025-12-20 10:22:56

Searching For Manuals

Time of First Successful Submission: 2025-12-20 10:35:55

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 []

Time of First Successful Submission: 2025-12-20 11:11:32

Matching paths with []

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Multiple globs

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Mixing globs

Time of First Successful Submission: 2025-12-20 11:23:57

Exclusionary globbing

Time of First Successful Submission: 2025-12-20 11:27:19

Tab completion

Time of First Successful Submission: 2025-12-20 11:30:10

Multiple options for tab completion

Time of First Successful Submission: 2025-12-20 11:33:09

Tab completion on commands

Time of First Successful Submission: 2025-12-20 11:34:03

Redirecting output

Time of First Successful Submission: 2025-12-20 11:47:16

Redirecting more output

Time of First Successful Submission: 2025-12-20 11:51:25

Appending output

Time of First Successful Submission: 2025-12-20 11:56:07

Redirecting errors

Time of First Successful Submission: 2025-12-20 11:58:30

Redirecting input

Time of First Successful Submission: 2025-12-20 12:05:20

Grepping stored results

Time of First Successful Submission: 2025-12-20 12:08:28

Grepping live output

Time of First Successful Submission: 2025-12-20 12:10:19

Grepping errors

Time of First Successful Submission: 2025-12-20 12:14:34

Filtering with grep -v

Time of First Successful Submission: 2025-12-20 12:16:55

Filtering with sed

Time of First Successful Submission: 2025-12-20 13:28:36

Duplicating piped data with tee

Time of First Successful Submission: 2025-12-20 13:49:22

Process substitution for input

Time of First Successful Submission: 2025-12-20 13:52:47

Writing to multiple programs

Time of First Successful Submission: 2025-12-21 00:29:37

Split-piping stderr and stdout

Time of First Successful Submission: 2025-12-21 00:39:57

Named pipes

Time of First Successful Submission: 2025-12-21 00:59:04


Computing 101

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Disassembling Programs

Time of First Successful Submission: 2026-04-17 00:25:52

Tracing Syscalls

Time of First Successful Submission: 2026-04-17 00:29:20

Starting GDB

Time of First Successful Submission: 2026-04-17 00:31:26

Quitting GDB

Time of First Successful Submission: 2026-04-17 00:32:17

Starting Programs in GDB

Time of First Successful Submission: 2026-04-17 00:34:56

Disassembling in GDB

Time of First Successful Submission: 2026-04-17 00:36:28

Stepping Through Instructions

Time of First Successful Submission: 2026-04-17 00:40:26

Reading Register Values

Time of First Successful Submission: 2026-04-17 00:42:30

Popping Stack Values

Time of First Successful Submission: 2026-04-17 00:44:53

Examining Memory

Time of First Successful Submission: 2026-04-17 00:47:08

Examining Stack Pointers

Time of First Successful Submission: 2026-04-17 00:53:34

Cooperative Debugging

Time of First Successful Submission: 2026-04-17 01:13:16


GCA CTF

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Using the Terminal

Time of First Successful Submission: 2025-12-20 07:20:48

Using the VSCode Workspace

Time of First Successful Submission: 2025-12-20 07:24:03

Using the GUI Desktop

Time of First Successful Submission: 2025-12-20 07:28:48

Pasting into the Desktop

Time of First Successful Submission: 2025-12-20 07:42:55

Restarting Challenges

Time of First Successful Submission: 2025-12-20 07:46:44

Challenge Programs

Time of First Successful Submission: 2025-12-20 07:50:16

The Flag File

Time of First Successful Submission: 2025-12-20 07:51:52

Persistent Home Directories - One

Time of First Successful Submission: 2025-12-20 08:01:56

Persistent Home Directories - Two

Time of First Successful Submission: 2025-12-20 08:02:31