racheliyonan

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-13 22:22:42

Command Arguments

Time of First Successful Submission: 2026-01-13 22:24:29

Command History

Time of First Successful Submission: 2026-01-13 22:25:50

The Root Path

Time of First Successful Submission: 2026-01-14 08:38:52

Absolute Paths

Time of First Successful Submission: 2026-01-14 08:40:12

Changing position

Time of First Successful Submission: 2026-01-14 08:47:42

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-14 08:49:49

Relative Paths

Time of First Successful Submission: 2026-01-14 17:24:28

Cat

Time of First Successful Submission: 2026-01-14 17:38:34

Ls

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Ls All

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Find

Time of First Successful Submission: 2026-01-14 19:01:56

Piping Echo

Time of First Successful Submission: 2026-01-15 06:22:53

Piping Stdout

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Piping Stdin

Time of First Successful Submission: 2026-01-15 06:41:39

Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-08 07:53:48

Path Traversal 2

Time of First Successful Submission: 2026-02-08 15:20:11

CMDi 1

Time of First Successful Submission: 2026-02-08 15:32:41

CMDi 2

Time of First Successful Submission: 2026-02-08 15:36:40

CMDi 3

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CMDi 4

Time of First Successful Submission: 2026-02-08 15:46:58

CMDi 5

Time of First Successful Submission: 2026-02-08 15:59:31

Authentication Bypass 1

Time of First Successful Submission: 2026-02-08 16:03:54

Authentication Bypass 2

Time of First Successful Submission: 2026-02-08 16:06:41

SQLi 1

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SQLi 2

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SQLi 3

Time of First Successful Submission: 2026-02-08 19:03:26

SQLi 4

Time of First Successful Submission: 2026-02-08 19:07:26

SQLi 5

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XSS 1

Time of First Successful Submission: 2026-02-08 19:42:38

XSS 2

Time of First Successful Submission: 2026-02-11 17:10:03

XSS 3

Time of First Successful Submission: 2026-02-11 17:13:14

XSS 4

Time of First Successful Submission: 2026-02-11 17:23:45

XSS 5

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XSS 6

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XSS 7

Time of First Successful Submission: 2026-02-11 18:53:03

CSRF 1

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CSRF 2

Time of First Successful Submission: 2026-02-12 02:02:13

CSRF 3

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

CSRF 4

Time of First Successful Submission: 2026-02-12 02:32:26

CSRF 5

Time of First Successful Submission: 2026-02-12 02:57:55

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-07 00:42:27

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-08 00:30:27

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-08 00:38:33

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-08 00:44:45

Reading Endianness (C)

Time of First Successful Submission: 2026-03-08 00:50:47

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-08 01:00:14

Version Information (Python)

Time of First Successful Submission: 2026-03-08 07:12:59

Version Information (C)

Time of First Successful Submission: 2026-03-08 07:23:09

Version Information (x86)

Time of First Successful Submission: 2026-03-08 07:29:08

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-08 07:40:34

Metadata and Data (C)

Time of First Successful Submission: 2026-03-08 17:11:05

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-08 17:21:39

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)

Time of First Successful Submission: 2026-03-08 17:54:42

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: 2026-03-22 07:37:02

Internal State (x86)

Time of First Successful Submission: 2026-03-22 07:43:12

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-23 19:48:00

File Formats: Directives (x86)

Time of First Successful Submission: 2026-03-23 19:53:16

Tweaking Images

Time of First Successful Submission: 2026-03-24 03:46:15

Extracting Knowledge

Time of First Successful Submission: 2026-03-24 04:17:44

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-26 18:50:03

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-26 18:58:57

Precision (easy)

Time of First Successful Submission: 2026-03-26 22:08:29

Precision (hard)

Time of First Successful Submission: 2026-03-26 22:14:41

Variable Control (easy)

Time of First Successful Submission: 2026-03-26 22:22:18

Variable Control (hard)

Time of First Successful Submission: 2026-03-26 22:29:35

Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 18:03:18

Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 18:07:01

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 18:17:12

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 18:21:15

PIEs (easy)

Time of First Successful Submission: 2026-03-28 08:06:41

PIEs (hard)

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Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-13 21:00:30

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: 2026-01-13 21:19:41

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-13 22:22:42

Intro to Arguments

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Command History

Time of First Successful Submission: 2026-01-13 22:25:50

The Root

Time of First Successful Submission: 2026-01-14 08:38:52

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 /

Time of First Successful Submission: 2026-01-14 17:24:28

explicit relative paths, from /

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implicit relative path

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home sweet home

Time of First Successful Submission: 2026-01-14 17:37:22

cat: not the pet, but the command!

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catting absolute paths

Time of First Successful Submission: 2026-01-14 17:39:54

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: 2026-01-14 18:04:06

An Epic Filesystem Quest

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making directories

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finding files

Time of First Successful Submission: 2026-01-14 19:01:56

linking files

Time of First Successful Submission: 2026-01-14 19:04:27

Learning From Documentation

Time of First Successful Submission: 2026-01-14 19:11:04

Learning Complex Usage

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Reading Manuals

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Searching Manuals

Time of First Successful Submission: 2026-01-15 05:24:51

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: 2026-01-15 06:14:46

Tab completion on commands

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Redirecting output

Time of First Successful Submission: 2026-01-15 06:22:53

Redirecting more output

Time of First Successful Submission: 2026-01-15 06:27:33

Appending output

Time of First Successful Submission: 2026-01-15 06:33:56

Redirecting errors

Time of First Successful Submission: 2026-01-15 06:39:16

Redirecting input

Time of First Successful Submission: 2026-01-15 06:41:39

Grepping stored results

Time of First Successful Submission: 2026-01-15 06:54:39

Grepping live output

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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

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Process substitution for input

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Writing to multiple programs

Time of First Successful Submission: 2026-01-15 07:35:17

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-15 07:54:57

Named pipes

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Printing Variables

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Setting Variables

Time of First Successful Submission: 2026-01-15 08:20:45

Multi-word Variables

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Exporting Variables

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Printing Exported Variables

Time of First Successful Submission: 2026-01-15 08:27:25

Storing Command Output

Time of First Successful Submission: 2026-01-15 08:31:49

Reading Input

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Reading Files

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Translating characters

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Deleting characters

Time of First Successful Submission: 2026-01-15 09:00:40

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

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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: 2026-01-15 10:26:36

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-01-16 16:58:15

Groups and Files

Time of First Successful Submission: 2026-01-18 02:29:54

Fun With Groups Names

Time of First Successful Submission: 2026-01-18 02:31:22

Changing Permissions

Time of First Successful Submission: 2026-01-18 04:33:18

Executable Files

Time of First Successful Submission: 2026-01-18 04:38:29

Permission Tweaking Practice

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Permissions Setting Practice

Time of First Successful Submission: 2026-01-18 04:55:43

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: 2026-01-18 05:08:07

Your First Shell Script

Time of First Successful Submission: 2026-01-18 05:16:10

Redirecting Script Output

Time of First Successful Submission: 2026-01-18 05:23:46

Executable Shell Scripts

Time of First Successful Submission: 2026-01-18 05:26:40

Understanding Shebangs

Time of First Successful Submission: 2026-01-18 05:36:45

Scripting with Arguments

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Scripting with Conditionals

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Scripting with Default Cases

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Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-18 05:51:59

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: 2026-01-18 06:11:41

Switching Windows

Time of First Successful Submission: 2026-01-18 06:13:44

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-18 06:15:09

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-18 06:19:00

The PATH Variable

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Setting PATH

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Finding Commands

Time of First Successful Submission: 2026-01-18 06:33:47

Adding Commands

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Hijacking Commands

Time of First Successful Submission: 2026-01-18 07:02:48

Bashrc Backdoor

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Sniffing Input

Time of First Successful Submission: 2026-01-18 08:06:30

Overshared Directories

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Tricky Linking

Time of First Successful Submission: 2026-01-18 08:46:03

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-18 08:58:54

Snooping on Configurations

Time of First Successful Submission: 2026-01-18 09:06:12

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 /

Time of First Successful Submission: 2026-01-18 10:21:04

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: 2026-02-22 16:26:34

Building Executables

Time of First Successful Submission: 2026-02-22 16:46:40

Moving Between Registers

Time of First Successful Submission: 2026-02-22 16:49:05

Loading From Memory

Time of First Successful Submission: 2026-02-22 16:52:48

More Loading Practice

Time of First Successful Submission: 2026-02-22 16:54:12

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

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Stack Offsets

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Program Arguments on the Stack

Time of First Successful Submission: 2026-02-22 18:04:24

Popping From the Stack

Time of First Successful Submission: 2026-02-22 18:07:08

Disassembling Programs

Time of First Successful Submission: 2026-02-22 18:14:44

Tracing Syscalls

Time of First Successful Submission: 2026-02-22 18:40:00

Starting GDB

Time of First Successful Submission: 2026-02-22 18:45:33

Quitting GDB

Time of First Successful Submission: 2026-02-22 18:46:36

Starting Programs in GDB

Time of First Successful Submission: 2026-02-22 18:54:17

Disassembling in GDB

Time of First Successful Submission: 2026-02-22 19:01:48

Stepping Through Instructions

Time of First Successful Submission: 2026-02-22 19:04:47

Reading Register Values

Time of First Successful Submission: 2026-02-22 19:06:01

Popping Stack Values

Time of First Successful Submission: 2026-02-22 19:11:16

Examining Memory

Time of First Successful Submission: 2026-02-22 19:17:17

Examining Stack Pointers

Time of First Successful Submission: 2026-02-22 19:21:03

Cooperative Debugging

Time of First Successful Submission: 2026-02-22 19:25:17

Writing Output

Time of First Successful Submission: 2026-02-22 20:37:57

Chaining Syscalls

Time of First Successful Submission: 2026-02-22 20:54:02

Writing Strings

Time of First Successful Submission: 2026-02-22 20:55:42

Reading Data

Time of First Successful Submission: 2026-02-22 21:03:34

Opening Files

Time of First Successful Submission: 2026-02-22 21:06:35

Hardcoding the Filename

Time of First Successful Submission: 2026-02-22 21:09:49

Comparing Values

Time of First Successful Submission: 2026-02-22 21:22:34

Comparing Characters

Time of First Successful Submission: 2026-02-22 21:28:47

Conditional Control Flow

Time of First Successful Submission: 2026-02-22 21:44:46

Comparing Strings

Time of First Successful Submission: 2026-02-22 21:47:05

Reverse the Password

Time of First Successful Submission: 2026-02-22 21:56:26

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-22 22:02:58

Looping

Time of First Successful Submission: 2026-02-22 22:10:43

Reverse the Calculation

Time of First Successful Submission: 2026-02-22 22:23:29

Reverse the Reverse

Time of First Successful Submission: 2026-02-22 22:25:41

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-22 22:27:04

Loops on Data

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set-register

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set-multiple-registers

Time of First Successful Submission: 2026-02-22 22:34:40

add-to-register

Time of First Successful Submission: 2026-02-22 22:36:09

linear-equation-registers

Time of First Successful Submission: 2026-02-22 22:37:37

integer-division

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modulo-operation

Time of First Successful Submission: 2026-02-22 22:43:07

set-upper-byte

Time of First Successful Submission: 2026-02-22 22:45:34

efficient-modulo

Time of First Successful Submission: 2026-03-01 15:14:11

byte-extraction

Time of First Successful Submission: 2026-03-01 15:21:27

bitwise-and

Time of First Successful Submission: 2026-03-01 15:25:26

check-even

Time of First Successful Submission: 2026-03-01 15:27:32

memory-read

Time of First Successful Submission: 2026-03-01 15:29:01

memory-write

Time of First Successful Submission: 2026-03-01 15:30:28

memory-increment

Time of First Successful Submission: 2026-03-01 15:32:01

byte-access

Time of First Successful Submission: 2026-03-01 15:34:19

memory-size-access

Time of First Successful Submission: 2026-03-01 15:36:23

little-endian-write

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memory-sum

Time of First Successful Submission: 2026-03-01 15:43:16

stack-subtraction

Time of First Successful Submission: 2026-03-01 15:44:54

swap-stack-values

Time of First Successful Submission: 2026-03-01 15:47:39

average-stack-values

Time of First Successful Submission: 2026-03-01 15:50:13

absolute-jump

Time of First Successful Submission: 2026-03-01 15:52:02

relative-jump

Time of First Successful Submission: 2026-03-01 15:58:17

jump-trampoline

Time of First Successful Submission: 2026-03-01 16:02:23

conditional-jump

Time of First Successful Submission: 2026-03-01 16:38:06

indirect-jump

Time of First Successful Submission: 2026-03-01 16:40:02

average-loop

Time of First Successful Submission: 2026-03-01 16:44:28

count-non-zero

Time of First Successful Submission: 2026-03-01 16:48:04

string-lower

Time of First Successful Submission: 2026-03-01 17:00:55

most-common-byte

Time of First Successful Submission: 2026-03-01 17:30:58

Exit

Time of First Successful Submission: 2026-03-01 19:34:25

Socket

Time of First Successful Submission: 2026-03-01 19:37:45

Bind

Time of First Successful Submission: 2026-03-01 19:41:49

Listen

Time of First Successful Submission: 2026-03-01 19:43:24

Accept

Time of First Successful Submission: 2026-03-01 19:46:13

Static Response

Time of First Successful Submission: 2026-03-01 19:49:03

Dynamic Response

Time of First Successful Submission: 2026-03-01 19:54:17

Iterative GET Server

Time of First Successful Submission: 2026-03-01 19:57:09

Concurrent GET Server

Time of First Successful Submission: 2026-03-01 19:59:20

Concurrent POST Server

Time of First Successful Submission: 2026-03-01 20:02:47

Web Server

Time of First Successful Submission: 2026-03-01 20:04:44

Debugging Programs

Time of First Successful Submission: 2026-03-01 17:37:37

Inspecting Registers

Time of First Successful Submission: 2026-03-01 17:39:51

Examining Memory

Time of First Successful Submission: 2026-03-01 17:48:49

Setting Breakpoints

Time of First Successful Submission: 2026-03-01 18:04:53

GDB Scripting

Time of First Successful Submission: 2026-03-01 18:46:31

Modifying Data

Time of First Successful Submission: 2026-03-01 19:08:07

Modifying Execution

Time of First Successful Submission: 2026-03-01 19:11:23

Broken Functions

Time of First Successful Submission: 2026-03-01 19:26:10

Playing With Programs

65 / 116 4190 / 23386

What's the password?

Time of First Successful Submission: 2026-01-22 17:32:15

... and again!

Time of First Successful Submission: 2026-01-22 17:34:21

Newline Troubles

Time of First Successful Submission: 2026-01-22 19:15:33

Reasoning about files

Time of First Successful Submission: 2026-01-22 20:39:59

Specifying Filenames

Time of First Successful Submission: 2026-01-22 22:15:17

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-22 22:24:48

More Hex

Time of First Successful Submission: 2026-01-22 22:27:47

Decoding Hex

Time of First Successful Submission: 2026-01-23 01:57:20

Decoding Practice

Time of First Successful Submission: 2026-01-23 02:30:57

Encoding Practice

Time of First Successful Submission: 2026-01-24 19:48:18

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-25 19:40:37

Nested Encoding

Time of First Successful Submission: 2026-01-25 19:47:20

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-25 20:28:57

UTF Mixups

Time of First Successful Submission: 2026-01-25 20:44:42

Modifying Encoded Data

Time of First Successful Submission: 2026-01-25 20:54:05

Decoding Base64

Time of First Successful Submission: 2026-01-25 21:10:54

Encoding Base64

Time of First Successful Submission: 2026-01-25 21:15:04

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-25 21:23:04

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-01-25 22:04:19

Your First HTTP Request

Time of First Successful Submission: 2026-01-25 22:05:34

Reading Flask

Time of First Successful Submission: 2026-01-25 22:11:49

Commented Data

Time of First Successful Submission: 2026-01-25 22:25:58

HTTP Metadata

Time of First Successful Submission: 2026-01-25 22:30:09

HTTP (netcat)

Time of First Successful Submission: 2026-01-25 22:45:58

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-25 23:26:59

HTTP (curl)

Time of First Successful Submission: 2026-01-25 23:32:15

HTTP (python)

Time of First Successful Submission: 2026-01-25 23:40:17

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-25 23:56:43

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-26 00:07:22

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-26 00:21:03

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-26 00:29:34

HTTP GET Parameters

Time of First Successful Submission: 2026-01-26 00:40:22

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-26 00:49:15

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-26 00:53:27

HTTP Forms

Time of First Successful Submission: 2026-01-26 02:53:18

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-26 03:00:34

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-26 17:57:25

HTTP Forms (python)

Time of First Successful Submission: 2026-01-26 18:05:40

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-26 18:19:31

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-26 18:24:26

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-26 18:35:00

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-26 18:46:52

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-26 18:48:37

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-26 18:50:37

HTTP Cookies (curl)

Time of First Successful Submission: 2026-01-26 18:56:12

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-01-26 19:00:32

HTTP Cookies (python)

Time of First Successful Submission: 2026-01-26 19:04:31

Server State (python)

Time of First Successful Submission: 2026-01-26 19:11:34

Listening Web

Time of First Successful Submission: 2026-01-26 19:43:56

Speaking Redirects

Time of First Successful Submission: 2026-01-26 20:32:46

JavaScript Redirects

Time of First Successful Submission: 2026-01-26 20:58:57

Including JavaScript

Time of First Successful Submission: 2026-01-27 01:21:43

HTTP (javascript)

Time of First Successful Submission: 2026-01-27 01:38:48

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-01-27 01:44:27

HTTP Forms (javascript)

Time of First Successful Submission: 2026-01-27 01:53:18

SQL Queries

Time of First Successful Submission: 2026-01-27 01:59:45

Filtering SQL

Time of First Successful Submission: 2026-01-27 02:04:32

Choosing Columns

Time of First Successful Submission: 2026-01-27 02:07:06

Exclusionary Filtering

Time of First Successful Submission: 2026-01-27 02:10:55

Filtering Strings

Time of First Successful Submission: 2026-01-27 02:16:12

Filtering on Expressions

Time of First Successful Submission: 2026-01-27 02:37:57

SELECTing Expressions

Time of First Successful Submission: 2026-01-27 02:50:20

Composite Conditions

Time of First Successful Submission: 2026-01-27 02:55:03

Reaching Your LIMITs

Time of First Successful Submission: 2026-01-27 03:04:53

Querying Metadata

Time of First Successful Submission: 2026-01-27 03:11:30

GCA CTF

5 / 104 32298 / 43656

Using the Terminal

Time of First Successful Submission: 2026-01-13 21:00:30

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-13 21:05:24

Using the GUI Desktop

Time of First Successful Submission: 2026-01-13 21:09:50

Pasting into the Desktop

Time of First Successful Submission: 2026-01-13 21:12:39

Restarting Challenges

Time of First Successful Submission: 2026-01-13 21:19:41