Tjain25

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-24 05:44:23

Command Arguments

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Command History

Time of First Successful Submission: 2026-01-24 05:47:16

The Root Path

Time of First Successful Submission: 2026-01-24 06:01:17

Absolute Paths

Time of First Successful Submission: 2026-01-24 06:03:10

Changing position

Time of First Successful Submission: 2026-01-24 06:04:54

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-24 06:07:09

Relative Paths

Time of First Successful Submission: 2026-01-24 06:09:18

Cat

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Ls

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Ls All

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Find

Time of First Successful Submission: 2026-01-29 19:44:00

Piping Echo

Time of First Successful Submission: 2026-02-04 04:20:37

Piping Stdout

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Piping Stdin

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Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-08 23:14:28

Path Traversal 2

Time of First Successful Submission: 2026-02-09 01:39:49

CMDi 1

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CMDi 2

Time of First Successful Submission: 2026-02-09 02:51:08

CMDi 3

Time of First Successful Submission: 2026-02-09 02:56:29

CMDi 4

Time of First Successful Submission: 2026-02-09 02:59:19

CMDi 5

Time of First Successful Submission: 2026-02-09 03:02:59

Authentication Bypass 1

Time of First Successful Submission: 2026-02-09 03:04:28

Authentication Bypass 2

Time of First Successful Submission: 2026-02-09 03:05:50

SQLi 1

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SQLi 2

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SQLi 3

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SQLi 4

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SQLi 5

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XSS 1

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XSS 2

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XSS 3

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XSS 4

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XSS 5

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XSS 6

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XSS 7

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CSRF 1

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CSRF 2

Time of First Successful Submission: 2026-02-09 06:08:56

CSRF 3

Time of First Successful Submission: 2026-02-09 06:10:53

CSRF 4

Time of First Successful Submission: 2026-02-09 06:24:54

CSRF 5

Time of First Successful Submission: 2026-02-09 06:28:58

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-09 06:22:03

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-09 06:25:08

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-09 06:26:34

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-09 06:28:13

Reading Endianness (C)

Time of First Successful Submission: 2026-03-09 06:29:32

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-09 06:30:29

Version Information (Python)

Time of First Successful Submission: 2026-03-09 06:31:41

Version Information (C)

Time of First Successful Submission: 2026-03-09 06:33:58

Version Information (x86)

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Metadata and Data (Python)

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Metadata and Data (C)

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Metadata and Data (x86)

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Input Restrictions (Python)

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Input Restrictions (C)

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Input Restrictions (x86)

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Behold the cIMG! (Python)

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Behold the cIMG! (C)

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Behold the cIMG! (x86)

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A Basic cIMG (Python)

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A Basic cIMG (C)

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A Basic cIMG (x86)

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Internal State Mini (C)

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Internal State Mini (x86)

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Internal State (C)

Time of First Successful Submission: 2026-03-17 04:40:42

Internal State (x86)

Time of First Successful Submission: 2026-03-17 04:42:27

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-17 04:47:36

File Formats: Directives (x86)

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The Patch Directive

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Optimizing for Space

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Storage and Retrieval

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Extracting Knowledge

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Advanced Sprites

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Accessing Resources

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Unsafe Animations

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Animations

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Interoperability: Patching Data

Time of First Successful Submission: 2026-03-23 05:25:39

Patching Code

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Patching Control Flow

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Your First Overflow (easy)

Time of First Successful Submission: 2026-03-30 06:28:48

Your First Overflow (hard)

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Precision (easy)

Time of First Successful Submission: 2026-03-30 06:33:50

Precision (hard)

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Variable Control (easy)

Time of First Successful Submission: 2026-03-30 06:38:03

Variable Control (hard)

Time of First Successful Submission: 2026-03-30 06:40:04

Control Hijack (easy)

Time of First Successful Submission: 2026-03-30 06:42:41

Control Hijack (hard)

Time of First Successful Submission: 2026-03-30 06:44:37

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-30 06:50:48

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-30 06:53:32

Start Here

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Using the Terminal

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Using the VSCode Workspace

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Using the GUI Desktop

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Pasting into the Desktop

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Restarting Challenges

Time of First Successful Submission: 2026-01-24 05:35:27

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-24 05:44:23

Intro to Arguments

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Command History

Time of First Successful Submission: 2026-01-24 05:47:16

The Root

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Program and absolute paths

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Position thy self

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Position elsewhere

Time of First Successful Submission: 2026-01-24 06:07:09

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: 2026-01-24 06:20:10

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-24 06:22:21

catting absolute paths

Time of First Successful Submission: 2026-01-24 06:24:48

more catting practice

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grepping for a needle in a haystack

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comparing files

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listing files

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touching files

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removing files

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moving files

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copying files

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hidden files

Time of First Successful Submission: 2026-01-24 06:46:15

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-24 06:55:16

making directories

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finding files

Time of First Successful Submission: 2026-01-29 19:44:00

linking files

Time of First Successful Submission: 2026-01-29 20:07:50

Learning From Documentation

Time of First Successful Submission: 2026-01-29 20:20:02

Learning Complex Usage

Time of First Successful Submission: 2026-01-29 20:22:22

Reading Manuals

Time of First Successful Submission: 2026-01-29 20:27:31

Searching Manuals

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Searching For Manuals

Time of First Successful Submission: 2026-01-29 20:50:26

Helpful Programs

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Help for Builtins

Time of First Successful Submission: 2026-01-31 01:14:49

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

Time of First Successful Submission: 2026-02-03 20:18:46

Exclusionary globbing

Time of First Successful Submission: 2026-02-03 21:11:10

Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-02-04 04:16:41

Tab completion on commands

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Redirecting output

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Redirecting more output

Time of First Successful Submission: 2026-02-04 04:23:15

Appending output

Time of First Successful Submission: 2026-02-04 04:25:59

Redirecting errors

Time of First Successful Submission: 2026-02-04 04:29:24

Redirecting input

Time of First Successful Submission: 2026-02-04 04:30:51

Grepping stored results

Time of First Successful Submission: 2026-02-04 04:34:03

Grepping live output

Time of First Successful Submission: 2026-02-04 04:35:27

Grepping errors

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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: 2026-02-04 04:59:23

Process substitution for input

Time of First Successful Submission: 2026-02-04 06:06:43

Writing to multiple programs

Time of First Successful Submission: 2026-02-04 06:18:51

Split-piping stderr and stdout

Time of First Successful Submission: 2026-02-04 06:30:46

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

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Printing Exported Variables

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Storing Command Output

Time of First Successful Submission: 2026-02-04 19:55:19

Reading Input

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Reading Files

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Translating characters

Time of First Successful Submission: 2026-02-04 20:05:47

Deleting characters

Time of First Successful Submission: 2026-02-04 20:07:11

Deleting newlines

Time of First Successful Submission: 2026-02-04 20:09:19

Extracting the first lines with head

Time of First Successful Submission: 2026-02-04 20:13:16

Extracting specific sections of text

Time of First Successful Submission: 2026-02-04 21:12:31

Sorting data

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Listing Processes

Time of First Successful Submission: 2026-02-04 21:21:14

Killing Processes

Time of First Successful Submission: 2026-02-04 21:22:40

Interrupting Processes

Time of First Successful Submission: 2026-02-04 21:23:36

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: 2026-02-04 21:53:49

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-02-04 23:58:01

Groups and Files

Time of First Successful Submission: 2026-02-05 00:07:11

Fun With Groups Names

Time of First Successful Submission: 2026-02-05 00:08:59

Changing Permissions

Time of First Successful Submission: 2026-02-05 00:20:42

Executable Files

Time of First Successful Submission: 2026-02-05 00:22:47

Permission Tweaking Practice

Time of First Successful Submission: 2026-02-05 00:31:29

Permissions Setting Practice

Time of First Successful Submission: 2026-02-05 00:36:34

The SUID Bit

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Chaining with Semicolons

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Building on Success

Time of First Successful Submission: 2026-02-05 00:54:24

Handling Failure

Time of First Successful Submission: 2026-02-05 00:55:25

Your First Shell Script

Time of First Successful Submission: 2026-02-05 01:02:33

Redirecting Script Output

Time of First Successful Submission: 2026-02-05 01:05:14

Executable Shell Scripts

Time of First Successful Submission: 2026-02-05 01:20:44

Understanding Shebangs

Time of First Successful Submission: 2026-02-05 01:29:21

Scripting with Arguments

Time of First Successful Submission: 2026-02-05 01:42:09

Scripting with Conditionals

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Scripting with Default Cases

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Scripting with Multiple Conditions

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Reading Shell Scripts

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Launching Screen

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Detaching and Attaching

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Finding Sessions

Time of First Successful Submission: 2026-02-05 02:46:15

Switching Windows

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Detaching and Attaching (tmux)

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Switching Windows (tmux)

Time of First Successful Submission: 2026-02-05 02:48:50

The PATH Variable

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Setting PATH

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Finding Commands

Time of First Successful Submission: 2026-02-06 04:52:58

Adding Commands

Time of First Successful Submission: 2026-02-06 05:03:20

Hijacking Commands

Time of First Successful Submission: 2026-02-06 05:05:40

Bashrc Backdoor

Time of First Successful Submission: 2026-02-06 05:11:26

Sniffing Input

Time of First Successful Submission: 2026-02-06 06:38:31

Overshared Directories

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Tricky Linking

Time of First Successful Submission: 2026-02-06 07:06:11

Sniffing Process Arguments

Time of First Successful Submission: 2026-02-06 07:09:35

Snooping on Configurations

Time of First Successful Submission: 2026-02-06 07:12:24

The Fork Bomb

Time of First Successful Submission: 2026-02-06 07:27:42

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

Time of First Successful Submission: 2026-02-24 04:50:34

Building Executables

Time of First Successful Submission: 2026-02-24 04:52:09

Moving Between Registers

Time of First Successful Submission: 2026-02-24 04:52:57

Loading From Memory

Time of First Successful Submission: 2026-02-24 04:59:33

More Loading Practice

Time of First Successful Submission: 2026-02-24 05:00:31

Dereferencing Pointers

Time of First Successful Submission: 2026-02-24 05:03:57

Dereferencing Yourself

Time of First Successful Submission: 2026-02-24 05:05:35

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-24 05:06:33

Stored Addresses

Time of First Successful Submission: 2026-02-24 05:07:44

Double Dereference

Time of First Successful Submission: 2026-02-24 05:08:44

The Stack

Time of First Successful Submission: 2026-02-24 05:09:42

Stack Offsets

Time of First Successful Submission: 2026-02-24 05:10:39

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-24 05:11:55

Popping From the Stack

Time of First Successful Submission: 2026-02-24 05:12:52

Disassembling Programs

Time of First Successful Submission: 2026-02-24 05:16:04

Tracing Syscalls

Time of First Successful Submission: 2026-02-24 05:16:45

Starting GDB

Time of First Successful Submission: 2026-02-24 05:17:29

Quitting GDB

Time of First Successful Submission: 2026-02-24 05:17:50

Starting Programs in GDB

Time of First Successful Submission: 2026-02-24 05:19:07

Disassembling in GDB

Time of First Successful Submission: 2026-02-24 05:19:49

Stepping Through Instructions

Time of First Successful Submission: 2026-02-24 05:20:42

Reading Register Values

Time of First Successful Submission: 2026-02-24 05:21:28

Popping Stack Values

Time of First Successful Submission: 2026-02-24 05:22:07

Examining Memory

Time of First Successful Submission: 2026-02-24 05:22:45

Examining Stack Pointers

Time of First Successful Submission: 2026-02-24 05:24:11

Cooperative Debugging

Time of First Successful Submission: 2026-02-24 05:25:04

Writing Output

Time of First Successful Submission: 2026-02-24 05:29:42

Chaining Syscalls

Time of First Successful Submission: 2026-02-24 05:30:52

Writing Strings

Time of First Successful Submission: 2026-02-24 05:31:54

Reading Data

Time of First Successful Submission: 2026-02-24 05:35:42

Opening Files

Time of First Successful Submission: 2026-02-24 05:38:11

Hardcoding the Filename

Time of First Successful Submission: 2026-02-24 05:40:18

Comparing Values

Time of First Successful Submission: 2026-02-24 05:42:13

Comparing Characters

Time of First Successful Submission: 2026-02-24 05:43:11

Conditional Control Flow

Time of First Successful Submission: 2026-02-24 05:44:18

Comparing Strings

Time of First Successful Submission: 2026-02-24 05:45:15

Reverse the Password

Time of First Successful Submission: 2026-02-24 05:47:42

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-24 05:54:47

Looping

Time of First Successful Submission: 2026-02-24 05:57:23

Reverse the Calculation

Time of First Successful Submission: 2026-02-24 05:59:51

Reverse the Reverse

Time of First Successful Submission: 2026-02-24 06:18:06

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-24 06:19:42

Loops on Data

Time of First Successful Submission: 2026-02-24 06:22:13

set-register

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set-multiple-registers

Time of First Successful Submission: 2026-02-24 06:29:50

add-to-register

Time of First Successful Submission: 2026-02-24 06:30:39

linear-equation-registers

Time of First Successful Submission: 2026-02-24 06:32:01

integer-division

Time of First Successful Submission: 2026-02-24 06:32:56

modulo-operation

Time of First Successful Submission: 2026-02-24 06:34:07

set-upper-byte

Time of First Successful Submission: 2026-03-03 05:54:31

efficient-modulo

Time of First Successful Submission: 2026-03-03 05:56:26

byte-extraction

Time of First Successful Submission: 2026-03-03 05:57:24

bitwise-and

Time of First Successful Submission: 2026-03-03 05:58:20

check-even

Time of First Successful Submission: 2026-03-03 06:01:34

memory-read

Time of First Successful Submission: 2026-03-03 06:02:31

memory-write

Time of First Successful Submission: 2026-03-03 06:04:55

memory-increment

Time of First Successful Submission: 2026-03-03 06:05:56

byte-access

Time of First Successful Submission: 2026-03-03 06:07:16

memory-size-access

Time of First Successful Submission: 2026-03-03 06:08:34

little-endian-write

Time of First Successful Submission: 2026-03-03 06:09:43

memory-sum

Time of First Successful Submission: 2026-03-03 06:11:01

stack-subtraction

Time of First Successful Submission: 2026-03-03 06:12:03

swap-stack-values

Time of First Successful Submission: 2026-03-03 06:14:01

average-stack-values

Time of First Successful Submission: 2026-03-03 06:14:58

absolute-jump

Time of First Successful Submission: 2026-03-03 06:16:12

relative-jump

Time of First Successful Submission: 2026-03-03 06:18:46

jump-trampoline

Time of First Successful Submission: 2026-03-03 06:20:00

conditional-jump

Time of First Successful Submission: 2026-03-03 06:22:24

indirect-jump

Time of First Successful Submission: 2026-03-03 06:23:34

average-loop

Time of First Successful Submission: 2026-03-03 06:25:26

count-non-zero

Time of First Successful Submission: 2026-03-03 06:26:28

string-lower

Time of First Successful Submission: 2026-03-04 04:55:26

most-common-byte

Time of First Successful Submission: 2026-03-04 04:59:41

Exit

Time of First Successful Submission: 2026-03-04 07:04:23

Socket

Time of First Successful Submission: 2026-03-04 07:06:41

Bind

Time of First Successful Submission: 2026-03-04 07:07:46

Listen

Time of First Successful Submission: 2026-03-04 07:09:01

Accept

Time of First Successful Submission: 2026-03-04 07:12:33

Static Response

Time of First Successful Submission: 2026-03-04 07:15:18

Dynamic Response

Time of First Successful Submission: 2026-03-04 07:17:43

Iterative GET Server

Time of First Successful Submission: 2026-03-04 07:18:41

Concurrent GET Server

Time of First Successful Submission: 2026-03-04 07:19:58

Concurrent POST Server

Time of First Successful Submission: 2026-03-04 07:21:09

Web Server

Time of First Successful Submission: 2026-03-04 07:22:33

Debugging Programs

Time of First Successful Submission: 2026-03-04 05:03:29

Inspecting Registers

Time of First Successful Submission: 2026-03-04 05:05:51

Examining Memory

Time of First Successful Submission: 2026-03-04 05:14:16

Setting Breakpoints

Time of First Successful Submission: 2026-03-04 05:39:34

GDB Scripting

Time of First Successful Submission: 2026-03-04 06:39:58

Modifying Data

Time of First Successful Submission: 2026-03-04 06:48:53

Modifying Execution

Time of First Successful Submission: 2026-03-04 06:57:49

Broken Functions

Time of First Successful Submission: 2026-03-04 07:00:39

Playing With Programs

19 / 116 15288 / 23380

What's the password?

Time of First Successful Submission: 2026-02-07 02:20:48

... and again!

Time of First Successful Submission: 2026-02-07 02:21:33

Newline Troubles

Time of First Successful Submission: 2026-02-07 02:23:22

Reasoning about files

Time of First Successful Submission: 2026-02-07 02:28:56

Specifying Filenames

Time of First Successful Submission: 2026-02-07 02:32:31

Binary and Hex Encoding

Time of First Successful Submission: 2026-02-07 02:38:07

More Hex

Time of First Successful Submission: 2026-02-07 02:42:41

Decoding Hex

Time of First Successful Submission: 2026-02-07 02:45:57

Decoding Practice

Time of First Successful Submission: 2026-02-07 02:57:06

Encoding Practice

Time of First Successful Submission: 2026-02-07 03:07:23

Hex-encoding ASCII

Time of First Successful Submission: 2026-02-08 00:08:48

Nested Encoding

Time of First Successful Submission: 2026-02-08 00:17:22

Hex-encoding UTF-8

Time of First Successful Submission: 2026-02-08 01:16:32

UTF Mixups

Time of First Successful Submission: 2026-02-08 01:28:54

Modifying Encoded Data

Time of First Successful Submission: 2026-02-08 01:38:28

Decoding Base64

Time of First Successful Submission: 2026-02-08 01:40:14

Encoding Base64

Time of First Successful Submission: 2026-02-08 01:47:18

Dealing with Obfuscation

Time of First Successful Submission: 2026-02-08 01:54:04

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-08 01:57:54

GCA CTF

5 / 104 32487 / 43623

Using the Terminal

Time of First Successful Submission: 2026-01-24 05:27:09

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-24 05:29:00

Using the GUI Desktop

Time of First Successful Submission: 2026-01-24 05:30:25

Pasting into the Desktop

Time of First Successful Submission: 2026-01-24 05:31:59

Restarting Challenges

Time of First Successful Submission: 2026-01-24 05:35:27