BobAlane

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Triple Dereference

Time of First Successful Submission: 2025-11-07 01:19:01


Intro to Programming Languages

15 / 234 5719 / 31849


Commands

Time of First Successful Submission: 2025-10-24 03:27:15

Command Arguments

Time of First Successful Submission: 2025-10-24 03:28:15

Command History

Time of First Successful Submission: 2025-10-24 07:29:30

The Root Path

Time of First Successful Submission: 2025-10-24 07:33:05

Absolute Paths

Time of First Successful Submission: 2025-10-24 07:35:22

Changing position

Time of First Successful Submission: 2025-10-24 07:37:20

Changing to an Absolute Path

Time of First Successful Submission: 2025-10-24 07:39:28

Relative Paths

Time of First Successful Submission: 2025-10-24 07:49:23

Cat

Time of First Successful Submission: 2025-10-24 08:07:02

Ls

Time of First Successful Submission: 2025-10-25 01:05:56

Ls All

Time of First Successful Submission: 2025-10-25 01:12:26

Find

Time of First Successful Submission: 2025-10-25 01:36:40

Piping Echo

Time of First Successful Submission: 2025-10-22 00:23:18

Piping Stdout

Time of First Successful Submission: 2025-10-27 12:37:09

Piping Stdin

Time of First Successful Submission: 2025-10-28 00:49:48


Start Here

11 / 12 6211 / 43127


Using the Terminal

Time of First Successful Submission: 2025-10-23 08:34:09

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-23 08:38:20

Using the GUI Desktop

Time of First Successful Submission: 2025-10-23 08:42:00

Pasting into the Desktop

Time of First Successful Submission: 2025-10-23 08:44:19

Restarting Challenges

Time of First Successful Submission: 2025-10-23 08:48:30

Challenge Programs

Time of First Successful Submission: 2025-10-24 03:03:13

The Flag File

Time of First Successful Submission: 2025-10-24 03:07:29

Using Privileged Mode

Time of First Successful Submission: 2025-10-24 03:13:28

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-24 03:22:46

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-24 03:24:35


Linux Luminarium

128 / 128 13 / 32256


Intro to Commands

Time of First Successful Submission: 2025-10-24 03:27:15

Intro to Arguments

Time of First Successful Submission: 2025-10-24 03:28:15

Command History

Time of First Successful Submission: 2025-10-24 07:29:30

The Root

Time of First Successful Submission: 2025-10-24 07:33:05

Program and absolute paths

Time of First Successful Submission: 2025-10-24 07:35:22

Position thy self

Time of First Successful Submission: 2025-10-24 07:37:20

Position elsewhere

Time of First Successful Submission: 2025-10-24 07:39:28

implicit relative paths, from /

Time of First Successful Submission: 2025-10-24 07:49:23

explicit relative paths, from /

Time of First Successful Submission: 2025-10-24 07:51:25

implicit relative path

Time of First Successful Submission: 2025-10-24 07:52:31

home sweet home

Time of First Successful Submission: 2025-10-24 08:05:23

cat: not the pet, but the command!

Time of First Successful Submission: 2025-10-24 08:07:02

catting absolute paths

Time of First Successful Submission: 2025-10-24 08:08:35

more catting practice

Time of First Successful Submission: 2025-10-24 08:16:40

grepping for a needle in a haystack

Time of First Successful Submission: 2025-10-24 08:22:09

comparing files

Time of First Successful Submission: 2025-10-25 00:45:19

listing files

Time of First Successful Submission: 2025-10-25 01:05:56

touching files

Time of First Successful Submission: 2025-10-25 01:07:18

removing files

Time of First Successful Submission: 2025-10-25 01:09:09

moving files

Time of First Successful Submission: 2025-10-25 01:10:56

copying files

Time of First Successful Submission: 2025-11-06 07:47:20

hidden files

Time of First Successful Submission: 2025-10-25 01:12:26

An Epic Filesystem Quest

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

making directories

Time of First Successful Submission: 2025-10-25 01:23:34

finding files

Time of First Successful Submission: 2025-10-25 01:36:40

linking files

Time of First Successful Submission: 2025-10-25 01:54:53

Learning From Documentation

Time of First Successful Submission: 2025-10-25 02:21:02

Learning Complex Usage

Time of First Successful Submission: 2025-10-25 02:23:49

Reading Manuals

Time of First Successful Submission: 2025-10-25 02:26:22

Searching Manuals

Time of First Successful Submission: 2025-10-25 02:29:01

Searching For Manuals

Time of First Successful Submission: 2025-10-25 03:11:40

Helpful Programs

Time of First Successful Submission: 2025-10-25 03:17:42

Help for Builtins

Time of First Successful Submission: 2025-10-25 07:00:58

Matching with *

Time of First Successful Submission: 2025-10-25 07:04:28

Matching with ?

Time of First Successful Submission: 2025-10-25 07:59:42

Matching with []

Time of First Successful Submission: 2025-10-25 08:02:02

Matching paths with []

Time of First Successful Submission: 2025-10-25 08:04:40

Multiple globs

Time of First Successful Submission: 2025-10-25 08:09:55

Mixing globs

Time of First Successful Submission: 2025-11-06 07:35:16

Exclusionary globbing

Time of First Successful Submission: 2025-11-06 07:40:19

Tab completion

Time of First Successful Submission: 2025-11-06 07:41:52

Multiple options for tab completion

Time of First Successful Submission: 2025-11-06 07:44:08

Tab completion on commands

Time of First Successful Submission: 2025-11-06 07:45:10

Redirecting output

Time of First Successful Submission: 2025-10-22 00:23:18

Redirecting more output

Time of First Successful Submission: 2025-10-27 12:37:09

Appending output

Time of First Successful Submission: 2025-10-27 12:42:16

Redirecting errors

Time of First Successful Submission: 2025-10-28 00:36:38

Redirecting input

Time of First Successful Submission: 2025-10-28 00:49:48

Grepping stored results

Time of First Successful Submission: 2025-10-28 00:52:33

Grepping live output

Time of First Successful Submission: 2025-10-28 00:56:12

Grepping errors

Time of First Successful Submission: 2025-10-28 01:00:00

Filtering with grep -v

Time of First Successful Submission: 2025-10-28 01:01:30

Filtering with sed

Time of First Successful Submission: 2025-11-06 07:49:56

Duplicating piped data with tee

Time of First Successful Submission: 2025-10-28 01:45:41

Process substitution for input

Time of First Successful Submission: 2025-10-28 02:45:07

Writing to multiple programs

Time of First Successful Submission: 2025-10-28 03:20:57

Split-piping stderr and stdout

Time of First Successful Submission: 2025-10-28 07:10:00

Named pipes

Time of First Successful Submission: 2025-10-28 08:06:06

Printing Variables

Time of First Successful Submission: 2025-10-28 08:08:19

Setting Variables

Time of First Successful Submission: 2025-10-28 08:10:22

Multi-word Variables

Time of First Successful Submission: 2025-10-28 08:12:33

Exporting Variables

Time of First Successful Submission: 2025-10-28 08:19:04

Printing Exported Variables

Time of First Successful Submission: 2025-10-28 08:20:36

Storing Command Output

Time of First Successful Submission: 2025-10-28 08:23:38

Reading Input

Time of First Successful Submission: 2025-10-28 08:26:11

Reading Files

Time of First Successful Submission: 2025-10-28 08:38:04

Translating characters

Time of First Successful Submission: 2025-10-28 08:46:30

Deleting characters

Time of First Successful Submission: 2025-10-28 08:49:20

Deleting newlines

Time of First Successful Submission: 2025-10-28 08:51:45

Extracting the first lines with head

Time of First Successful Submission: 2025-10-28 08:54:14

Extracting specific sections of text

Time of First Successful Submission: 2025-10-28 08:59:18

Sorting data

Time of First Successful Submission: 2025-10-28 09:01:02

Listing Processes

Time of First Successful Submission: 2025-10-29 03:05:40

Killing Processes

Time of First Successful Submission: 2025-10-29 07:44:29

Interrupting Processes

Time of First Successful Submission: 2025-10-29 07:46:47

Killing Misbehaving Processes

Time of First Successful Submission: 2025-10-29 07:52:25

Suspending Processes

Time of First Successful Submission: 2025-10-29 07:54:07

Resuming Processes

Time of First Successful Submission: 2025-10-29 08:06:16

Backgrounding Processes

Time of First Successful Submission: 2025-10-29 08:47:35

Foregrounding Processes

Time of First Successful Submission: 2025-10-29 08:51:01

Starting Backgrounded Processes

Time of First Successful Submission: 2025-10-29 08:52:17

Process Exit Codes

Time of First Successful Submission: 2025-10-29 08:54:41

Becoming root with su

Time of First Successful Submission: 2025-10-30 00:34:23

Other users with su

Time of First Successful Submission: 2025-10-30 00:36:12

Cracking passwords

Time of First Successful Submission: 2025-10-30 00:43:12

Using sudo

Time of First Successful Submission: 2025-10-30 00:46:30

Changing File Ownership

Time of First Successful Submission: 2025-10-30 01:01:21

Groups and Files

Time of First Successful Submission: 2025-10-30 01:09:04

Fun With Groups Names

Time of First Successful Submission: 2025-10-30 01:11:48

Changing Permissions

Time of First Successful Submission: 2025-10-30 01:28:43

Executable Files

Time of First Successful Submission: 2025-10-30 02:00:28

Permission Tweaking Practice

Time of First Successful Submission: 2025-10-30 02:49:14

Permissions Setting Practice

Time of First Successful Submission: 2025-10-30 02:53:37

The SUID Bit

Time of First Successful Submission: 2025-10-30 02:58:20

Chaining with Semicolons

Time of First Successful Submission: 2025-10-30 03:01:34

Building on Success

Time of First Successful Submission: 2025-10-30 03:03:32

Handling Failure

Time of First Successful Submission: 2025-10-30 03:04:54

Your First Shell Script

Time of First Successful Submission: 2025-10-30 03:08:36

Redirecting Script Output

Time of First Successful Submission: 2025-10-30 03:13:12

Executable Shell Scripts

Time of First Successful Submission: 2025-10-30 03:27:34

Understanding Shebangs

Time of First Successful Submission: 2025-10-30 12:28:16

Scripting with Arguments

Time of First Successful Submission: 2025-11-03 02:59:22

Scripting with Conditionals

Time of First Successful Submission: 2025-11-03 03:05:13

Scripting with Default Cases

Time of First Successful Submission: 2025-11-03 03:08:22

Scripting with Multiple Conditions

Time of First Successful Submission: 2025-11-03 03:14:57

Reading Shell Scripts

Time of First Successful Submission: 2025-11-03 06:34:08

Launching Screen

Time of First Successful Submission: 2025-11-03 06:40:41

Detaching and Attaching

Time of First Successful Submission: 2025-11-03 07:20:55

Finding Sessions

Time of First Successful Submission: 2025-11-03 08:14:14

Switching Windows

Time of First Successful Submission: 2025-11-03 08:18:45

Detaching and Attaching (tmux)

Time of First Successful Submission: 2025-11-03 08:40:23

Switching Windows (tmux)

Time of First Successful Submission: 2025-11-03 08:49:41

The PATH Variable

Time of First Successful Submission: 2025-11-03 12:31:48

Setting PATH

Time of First Successful Submission: 2025-11-03 12:40:59

Finding Commands

Time of First Successful Submission: 2025-11-03 12:43:51

Adding Commands

Time of First Successful Submission: 2025-11-04 02:45:51

Hijacking Commands

Time of First Successful Submission: 2025-11-04 06:47:56

Bashrc Backdoor

Time of First Successful Submission: 2025-11-05 07:31:35

Sniffing Input

Time of First Successful Submission: 2025-11-06 00:25:50

Overshared Directories

Time of First Successful Submission: 2025-11-06 00:37:14

Tricky Linking

Time of First Successful Submission: 2025-11-06 01:28:42

Sniffing Process Arguments

Time of First Successful Submission: 2025-11-06 01:42:11

Snooping on Configurations

Time of First Successful Submission: 2025-11-06 01:46:46

The Fork Bomb

Time of First Successful Submission: 2025-11-06 03:13:37

Disk-Space Doomsday

Time of First Successful Submission: 2025-11-06 03:20:11

rm -rf /

Time of First Successful Submission: 2025-11-06 03:29:18

Life after rm -rf /

Time of First Successful Submission: 2025-11-06 06:54:53

Finding meaning after rm -rf /

Time of First Successful Submission: 2025-11-06 07:09:28


Computing 101

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Your First Register

Time of First Successful Submission: 2025-11-06 08:02:07

Your First Syscall

Time of First Successful Submission: 2025-11-06 08:54:11

Exit Codes

Time of First Successful Submission: 2025-11-06 08:56:26

Building Executables

Time of First Successful Submission: 2025-11-06 09:05:24

Moving Between Registers

Time of First Successful Submission: 2025-11-06 12:11:20

Loading From Memory

Time of First Successful Submission: 2025-11-06 12:28:58

More Loading Practice

Time of First Successful Submission: 2025-11-06 12:30:20

Dereferencing Pointers

Time of First Successful Submission: 2025-11-06 12:35:10

Dereferencing Yourself

Time of First Successful Submission: 2025-11-06 12:36:23

Dereferencing with Offsets

Time of First Successful Submission: 2025-11-06 12:38:36

Stored Addresses

Time of First Successful Submission: 2025-11-06 12:40:56

Double Dereference

Time of First Successful Submission: 2025-11-06 12:45:18

Tracing Syscalls

Time of First Successful Submission: 2025-11-06 12:19:50

Starting GDB

Time of First Successful Submission: 2025-11-06 12:22:10

Starting Programs in GDB

Time of First Successful Submission: 2025-11-06 12:23:45

Writing Output

Time of First Successful Submission: 2025-11-07 01:37:14

Chaining Syscalls

Time of First Successful Submission: 2025-11-07 01:39:10

Writing Strings

Time of First Successful Submission: 2025-11-07 01:40:35

Reading Data

Time of First Successful Submission: 2025-11-07 01:45:10

set-register

Time of First Successful Submission: 2025-11-07 03:18:05

set-multiple-registers

Time of First Successful Submission: 2025-11-07 03:22:26

add-to-register

Time of First Successful Submission: 2025-11-07 03:24:31

linear-equation-registers

Time of First Successful Submission: 2025-11-07 06:46:58

integer-division

Time of First Successful Submission: 2025-11-07 07:08:13

modulo-operation

Time of First Successful Submission: 2025-11-07 07:34:39

set-upper-byte

Time of First Successful Submission: 2025-11-07 07:38:54

efficient-modulo

Time of First Successful Submission: 2025-11-07 07:59:33

byte-extraction

Time of First Successful Submission: 2025-11-07 08:07:35

bitwise-and

Time of First Successful Submission: 2025-11-08 02:40:47

check-even

Time of First Successful Submission: 2025-11-08 03:06:49

memory-read

Time of First Successful Submission: 2025-11-08 03:10:45

memory-write

Time of First Successful Submission: 2025-11-08 03:12:17

memory-increment

Time of First Successful Submission: 2025-11-08 03:15:02

byte-access

Time of First Successful Submission: 2025-11-08 03:18:15

memory-size-access

Time of First Successful Submission: 2025-11-08 03:20:43

little-endian-write

Time of First Successful Submission: 2025-11-14 01:17:05

memory-sum

Time of First Successful Submission: 2025-11-14 01:43:09

stack-subtraction

Time of First Successful Submission: 2025-11-14 02:41:51

swap-stack-values

Time of First Successful Submission: 2025-11-14 02:50:24

average-stack-values

Time of First Successful Submission: 2025-11-15 00:54:44

absolute-jump

Time of First Successful Submission: 2025-11-15 01:17:04

relative-jump

Time of First Successful Submission: 2025-11-15 01:39:37

jump-trampoline

Time of First Successful Submission: 2025-11-15 01:42:23

conditional-jump

Time of First Successful Submission: 2025-11-17 03:05:36

indirect-jump

Time of First Successful Submission: 2025-11-17 03:23:10

average-loop

Time of First Successful Submission: 2025-11-17 08:18:10

count-non-zero

Time of First Successful Submission: 2025-11-17 08:35:47

string-lower

Time of First Successful Submission: 2025-11-19 07:44:37

most-common-byte

Time of First Successful Submission: 2025-11-19 08:57:17

Exit

Time of First Successful Submission: 2025-11-24 11:57:43

Socket

Time of First Successful Submission: 2025-11-24 12:05:17

Bind

Time of First Successful Submission: 2025-11-24 12:19:25

Listen

Time of First Successful Submission: 2025-11-24 12:23:36

Accept

Time of First Successful Submission: 2025-11-24 12:31:37

Static Response

Time of First Successful Submission: 2025-11-25 02:32:11

Dynamic Response

Time of First Successful Submission: 2025-11-25 07:39:23

Iterative GET Server

Time of First Successful Submission: 2025-11-25 07:52:52

Concurrent GET Server

Time of First Successful Submission: 2025-11-25 07:57:00

Concurrent POST Server

Time of First Successful Submission: 2025-11-25 11:20:46

Web Server

Time of First Successful Submission: 2025-11-26 00:34:56

Debugging Programs

Time of First Successful Submission: 2025-11-20 00:23:22

Inspecting Registers

Time of First Successful Submission: 2025-11-20 00:35:42

Examining Memory

Time of First Successful Submission: 2025-11-20 01:40:00

Setting Breakpoints

Time of First Successful Submission: 2025-11-20 08:52:04

GDB Scripting

Time of First Successful Submission: 2025-11-21 07:20:50

Modifying Data

Time of First Successful Submission: 2025-11-24 01:06:58

Modifying Execution

Time of First Successful Submission: 2025-11-24 01:32:12

Broken Functions

Time of First Successful Submission: 2025-11-24 07:33:23


GCA CTF

11 / 104 6374 / 43404


Using the Terminal

Time of First Successful Submission: 2025-10-23 08:34:09

Using the VSCode Workspace

Time of First Successful Submission: 2025-10-23 08:38:20

Using the GUI Desktop

Time of First Successful Submission: 2025-10-23 08:42:00

Pasting into the Desktop

Time of First Successful Submission: 2025-10-23 08:44:19

Restarting Challenges

Time of First Successful Submission: 2025-10-23 08:48:30

Getting Help

Time of First Successful Submission: 2025-10-23 08:54:03

Challenge Programs

Time of First Successful Submission: 2025-10-24 03:03:13

The Flag File

Time of First Successful Submission: 2025-10-24 03:07:29

Using Privileged Mode

Time of First Successful Submission: 2025-10-24 03:13:28

Persistent Home Directories - One

Time of First Successful Submission: 2025-10-24 03:22:46

Persistent Home Directories - Two

Time of First Successful Submission: 2025-10-24 03:24:35