savinci

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-12 22:30:12

Command Arguments

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Command History

Time of First Successful Submission: 2026-01-12 22:31:16

The Root Path

Time of First Successful Submission: 2026-01-12 22:32:23

Absolute Paths

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Changing position

Time of First Successful Submission: 2026-01-12 22:33:26

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-12 22:34:38

Relative Paths

Time of First Successful Submission: 2026-01-12 22:35:55

Cat

Time of First Successful Submission: 2026-01-12 23:06:49

Ls

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Ls All

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Find

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Piping Echo

Time of First Successful Submission: 2026-01-13 21:55:08

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: 2026-02-04 07:26:57

Path Traversal 2

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CMDi 1

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CMDi 2

Time of First Successful Submission: 2026-02-04 21:06:47

CMDi 3

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CMDi 4

Time of First Successful Submission: 2026-02-04 21:22:19

CMDi 5

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Authentication Bypass 1

Time of First Successful Submission: 2026-02-04 22:09:49

Authentication Bypass 2

Time of First Successful Submission: 2026-02-04 22:16:35

SQLi 1

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SQLi 2

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SQLi 3

Time of First Successful Submission: 2026-02-05 19:41:20

SQLi 4

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SQLi 5

Time of First Successful Submission: 2026-02-10 23:21:49

XSS 1

Time of First Successful Submission: 2026-02-10 23:43:53

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

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CSRF 3

Time of First Successful Submission: 2026-02-12 19:49:28

CSRF 4

Time of First Successful Submission: 2026-02-12 20:54:28

CSRF 5

Time of First Successful Submission: 2026-02-12 21:26:49

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-03 21:42:53

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-03 21:48:53

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-03 22:40:09

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-03 22:50:04

Reading Endianness (C)

Time of First Successful Submission: 2026-03-03 22:51:59

Reading Endianness (x86)

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Version Information (Python)

Time of First Successful Submission: 2026-03-03 23:07:21

Version Information (C)

Time of First Successful Submission: 2026-03-03 23:13:23

Version Information (x86)

Time of First Successful Submission: 2026-03-03 23:21:45

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-03 23:28:14

Metadata and Data (C)

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

Metadata and Data (x86)

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Input Restrictions (Python)

Time of First Successful Submission: 2026-03-03 23:57:42

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: 2026-03-14 21:00:32

Internal State (x86)

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File Formats: Directives (C)

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File Formats: Directives (x86)

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The Patch Directive

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Optimizing for Space

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Tweaking Images

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Storage and Retrieval

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Extracting Knowledge

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Interoperability: Patching Data

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Patching Code

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Patching Control Flow

Time of First Successful Submission: 2026-03-25 18:41:32

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-26 20:23:30

Your First Overflow (hard)

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Precision (easy)

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Precision (hard)

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Variable Control (easy)

Time of First Successful Submission: 2026-03-27 21:02:35

Variable Control (hard)

Time of First Successful Submission: 2026-03-27 21:06:41

Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 21:18:37

Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 21:25:22

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-27 21:32:26

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-27 21:34:57

PIEs (easy)

Time of First Successful Submission: 2026-03-31 19:37:59

PIEs (hard)

Time of First Successful Submission: 2026-03-31 19:57:25

String Lengths (easy)

Time of First Successful Submission: 2026-03-31 22:21:18

String Lengths (hard)

Time of First Successful Submission: 2026-03-31 22:25:40

Basic Shellcode

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NOP Sleds

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NULL-Free Shellcode

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Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-03-31 23:20:35

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-03-31 23:24:32

Hijack to Shellcode (easy)

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Hijack to Shellcode (hard)

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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

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Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-12 22:30:12

Intro to Arguments

Time of First Successful Submission: 2026-01-12 22:30:55

Command History

Time of First Successful Submission: 2026-01-12 22:31:16

The Root

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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 /

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explicit relative paths, from /

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implicit relative path

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home sweet home

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cat: not the pet, but the command!

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catting absolute paths

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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: 2026-01-12 23:18:21

An Epic Filesystem Quest

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making directories

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finding files

Time of First Successful Submission: 2026-01-13 00:19:16

linking files

Time of First Successful Submission: 2026-01-13 05:59:29

Learning From Documentation

Time of First Successful Submission: 2026-01-13 06:01:24

Learning Complex Usage

Time of First Successful Submission: 2026-01-13 06:03:39

Reading Manuals

Time of First Successful Submission: 2026-01-13 06:10:23

Searching Manuals

Time of First Successful Submission: 2026-01-13 06:12:11

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

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Tab completion on commands

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Redirecting output

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Redirecting more output

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Appending output

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Redirecting errors

Time of First Successful Submission: 2026-01-13 22:00:08

Redirecting input

Time of First Successful Submission: 2026-01-13 22:01:37

Grepping stored results

Time of First Successful Submission: 2026-01-13 22:02:34

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

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Split-piping stderr and stdout

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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

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Reading Input

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Reading Files

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Translating characters

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Deleting characters

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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: 2026-01-14 06:23:53

Using sudo

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Changing File Ownership

Time of First Successful Submission: 2026-01-15 00:18:07

Groups and Files

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Fun With Groups Names

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Changing Permissions

Time of First Successful Submission: 2026-01-15 19:12:59

Executable Files

Time of First Successful Submission: 2026-01-15 19:14:05

Permission Tweaking Practice

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Permissions Setting Practice

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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

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Redirecting Script Output

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Executable Shell Scripts

Time of First Successful Submission: 2026-01-15 19:45:57

Understanding Shebangs

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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

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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

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Switching Windows

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Detaching and Attaching (tmux)

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Switching Windows (tmux)

Time of First Successful Submission: 2026-01-15 20:08:00

The PATH Variable

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Setting PATH

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Finding Commands

Time of First Successful Submission: 2026-01-15 20:12:50

Adding Commands

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Hijacking Commands

Time of First Successful Submission: 2026-01-16 00:20:54

Bashrc Backdoor

Time of First Successful Submission: 2026-01-16 00:26:15

Sniffing Input

Time of First Successful Submission: 2026-01-16 00:39:01

Overshared Directories

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Tricky Linking

Time of First Successful Submission: 2026-01-16 00:52:16

Sniffing Process Arguments

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Snooping on Configurations

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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: 2026-01-16 01:56:41

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: 2026-02-19 05:27:51

Building Executables

Time of First Successful Submission: 2026-02-19 05:32:23

Moving Between Registers

Time of First Successful Submission: 2026-02-19 05:36:56

Loading From Memory

Time of First Successful Submission: 2026-02-19 05:41:01

More Loading Practice

Time of First Successful Submission: 2026-02-19 05:41:45

Dereferencing Pointers

Time of First Successful Submission: 2026-02-19 05:43:10

Dereferencing Yourself

Time of First Successful Submission: 2026-02-19 05:44:00

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

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Popping From the Stack

Time of First Successful Submission: 2026-02-19 05:56:23

Disassembling Programs

Time of First Successful Submission: 2026-02-19 05:59:14

Tracing Syscalls

Time of First Successful Submission: 2026-02-19 06:01:32

Starting GDB

Time of First Successful Submission: 2026-02-19 06:03:47

Quitting GDB

Time of First Successful Submission: 2026-02-19 06:04:09

Starting Programs in GDB

Time of First Successful Submission: 2026-02-19 06:05:06

Disassembling in GDB

Time of First Successful Submission: 2026-02-19 06:05:45

Stepping Through Instructions

Time of First Successful Submission: 2026-02-19 06:06:34

Reading Register Values

Time of First Successful Submission: 2026-02-19 06:07:06

Popping Stack Values

Time of First Successful Submission: 2026-02-19 06:08:00

Examining Memory

Time of First Successful Submission: 2026-02-19 06:09:25

Examining Stack Pointers

Time of First Successful Submission: 2026-02-19 06:10:25

Cooperative Debugging

Time of First Successful Submission: 2026-02-19 07:56:51

Writing Output

Time of First Successful Submission: 2026-02-19 19:09:03

Chaining Syscalls

Time of First Successful Submission: 2026-02-19 19:10:10

Writing Strings

Time of First Successful Submission: 2026-02-19 19:10:56

Reading Data

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

Opening Files

Time of First Successful Submission: 2026-02-19 19:33:25

Hardcoding the Filename

Time of First Successful Submission: 2026-02-19 19:42:43

Comparing Values

Time of First Successful Submission: 2026-02-19 19:48:21

Comparing Characters

Time of First Successful Submission: 2026-02-19 19:51:50

Conditional Control Flow

Time of First Successful Submission: 2026-02-19 19:54:51

Comparing Strings

Time of First Successful Submission: 2026-02-19 19:58:43

Reverse the Password

Time of First Successful Submission: 2026-02-19 20:02:16

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-19 20:15:19

Looping

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Reverse the Calculation

Time of First Successful Submission: 2026-02-19 21:16:17

Reverse the Reverse

Time of First Successful Submission: 2026-02-19 21:17:35

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-19 21:28:03

Loops on Data

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set-register

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set-multiple-registers

Time of First Successful Submission: 2026-02-20 19:42:19

add-to-register

Time of First Successful Submission: 2026-02-24 21:51:59

linear-equation-registers

Time of First Successful Submission: 2026-02-24 21:57:16

integer-division

Time of First Successful Submission: 2026-02-24 22:21:13

modulo-operation

Time of First Successful Submission: 2026-02-24 22:23:12

set-upper-byte

Time of First Successful Submission: 2026-02-24 22:33:00

efficient-modulo

Time of First Successful Submission: 2026-02-24 22:45:06

byte-extraction

Time of First Successful Submission: 2026-02-25 03:44:47

bitwise-and

Time of First Successful Submission: 2026-02-25 05:44:17

check-even

Time of First Successful Submission: 2026-02-25 05:52:17

memory-read

Time of First Successful Submission: 2026-02-25 05:59:49

memory-write

Time of First Successful Submission: 2026-02-25 06:19:24

memory-increment

Time of First Successful Submission: 2026-02-25 22:02:53

byte-access

Time of First Successful Submission: 2026-02-25 22:08:45

memory-size-access

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

little-endian-write

Time of First Successful Submission: 2026-02-25 22:21:26

memory-sum

Time of First Successful Submission: 2026-02-25 22:26:35

stack-subtraction

Time of First Successful Submission: 2026-02-25 22:29:57

swap-stack-values

Time of First Successful Submission: 2026-02-25 22:33:29

average-stack-values

Time of First Successful Submission: 2026-02-25 22:37:36

absolute-jump

Time of First Successful Submission: 2026-02-25 22:42:49

relative-jump

Time of First Successful Submission: 2026-02-25 22:48:02

jump-trampoline

Time of First Successful Submission: 2026-02-25 22:49:38

conditional-jump

Time of First Successful Submission: 2026-02-25 23:08:09

indirect-jump

Time of First Successful Submission: 2026-02-25 23:24:28

average-loop

Time of First Successful Submission: 2026-02-25 23:30:42

count-non-zero

Time of First Successful Submission: 2026-02-25 23:38:13

string-lower

Time of First Successful Submission: 2026-02-26 08:06:30

most-common-byte

Time of First Successful Submission: 2026-02-26 20:08:14

Exit

Time of First Successful Submission: 2026-02-27 04:44:42

Socket

Time of First Successful Submission: 2026-02-27 21:06:33

Bind

Time of First Successful Submission: 2026-02-27 22:02:39

Listen

Time of First Successful Submission: 2026-02-27 22:08:02

Accept

Time of First Successful Submission: 2026-02-27 22:19:46

Static Response

Time of First Successful Submission: 2026-02-27 22:42:31

Dynamic Response

Time of First Successful Submission: 2026-02-27 23:53:57

Iterative GET Server

Time of First Successful Submission: 2026-02-28 00:01:17

Concurrent GET Server

Time of First Successful Submission: 2026-02-28 00:07:23

Concurrent POST Server

Time of First Successful Submission: 2026-02-28 00:31:02

Web Server

Time of First Successful Submission: 2026-02-28 04:20:17

Debugging Programs

Time of First Successful Submission: 2026-02-27 02:52:10

Inspecting Registers

Time of First Successful Submission: 2026-02-27 02:54:53

Examining Memory

Time of First Successful Submission: 2026-02-27 03:01:54

Setting Breakpoints

Time of First Successful Submission: 2026-02-27 03:45:28

GDB Scripting

Time of First Successful Submission: 2026-02-27 20:08:28

Modifying Data

Time of First Successful Submission: 2026-02-27 20:23:47

Modifying Execution

Time of First Successful Submission: 2026-02-27 20:26:25

Broken Functions

Time of First Successful Submission: 2026-02-27 20:54:03

Playing With Programs

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What's the password?

Time of First Successful Submission: 2026-01-22 05:31:40

... and again!

Time of First Successful Submission: 2026-01-22 05:32:04

Newline Troubles

Time of First Successful Submission: 2026-01-22 05:33:22

Reasoning about files

Time of First Successful Submission: 2026-01-22 05:38:40

Specifying Filenames

Time of First Successful Submission: 2026-01-22 05:39:54

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-22 05:57:12

More Hex

Time of First Successful Submission: 2026-01-22 06:05:42

Decoding Hex

Time of First Successful Submission: 2026-01-22 18:18:04

Decoding Practice

Time of First Successful Submission: 2026-01-22 19:04:55

Encoding Practice

Time of First Successful Submission: 2026-01-22 19:21:38

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-22 19:40:36

Nested Encoding

Time of First Successful Submission: 2026-01-22 19:52:09

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-22 20:00:59

UTF Mixups

Time of First Successful Submission: 2026-01-22 20:09:04

Modifying Encoded Data

Time of First Successful Submission: 2026-01-22 20:15:06

Decoding Base64

Time of First Successful Submission: 2026-01-22 22:21:27

Encoding Base64

Time of First Successful Submission: 2026-01-22 22:24:19

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-22 22:29:28

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-01-22 22:38:34

Your First HTTP Request

Time of First Successful Submission: 2026-01-24 20:40:47

Reading Flask

Time of First Successful Submission: 2026-01-24 21:02:48

Commented Data

Time of First Successful Submission: 2026-01-24 21:19:37

HTTP Metadata

Time of First Successful Submission: 2026-01-24 21:22:16

HTTP (netcat)

Time of First Successful Submission: 2026-01-28 03:22:16

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-28 03:24:25

HTTP (curl)

Time of First Successful Submission: 2026-01-28 03:52:37

HTTP (python)

Time of First Successful Submission: 2026-01-28 03:58:54

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-28 04:11:51

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-28 04:21:23

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-28 04:33:50

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-28 04:42:20

HTTP GET Parameters

Time of First Successful Submission: 2026-01-28 07:03:23

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-28 07:12:19

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-28 07:23:38

HTTP Forms

Time of First Successful Submission: 2026-01-28 07:26:00

HTTP Forms (curl)

Time of First Successful Submission: 2026-01-29 21:32:24

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-29 22:12:24

HTTP Forms (python)

Time of First Successful Submission: 2026-01-29 22:43:14

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-30 05:04:14

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-30 05:07:35

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-30 05:16:42

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-30 05:22:19

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-30 05:23:43

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-30 05:28:29

HTTP Cookies (curl)

Time of First Successful Submission: 2026-01-30 05:40:39

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-01-30 05:42:34

HTTP Cookies (python)

Time of First Successful Submission: 2026-01-30 05:48:43

Server State (python)

Time of First Successful Submission: 2026-01-30 05:52:36

Listening Web

Time of First Successful Submission: 2026-01-30 06:00:29

Speaking Redirects

Time of First Successful Submission: 2026-01-30 07:16:08

JavaScript Redirects

Time of First Successful Submission: 2026-01-30 07:30:52

Including JavaScript

Time of First Successful Submission: 2026-02-01 03:27:07

HTTP (javascript)

Time of First Successful Submission: 2026-02-01 04:31:32

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-02-01 04:49:27

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-01 21:46:31

SQL Queries

Time of First Successful Submission: 2026-01-22 22:48:55

Filtering SQL

Time of First Successful Submission: 2026-01-22 23:14:33

Choosing Columns

Time of First Successful Submission: 2026-01-23 00:37:22

Exclusionary Filtering

Time of First Successful Submission: 2026-01-23 00:49:52

Filtering Strings

Time of First Successful Submission: 2026-01-23 00:55:51

Filtering on Expressions

Time of First Successful Submission: 2026-01-23 01:08:10

SELECTing Expressions

Time of First Successful Submission: 2026-01-23 01:37:42

Composite Conditions

Time of First Successful Submission: 2026-01-23 23:50:58

Reaching Your LIMITs

Time of First Successful Submission: 2026-01-24 00:01:13

Querying Metadata

Time of First Successful Submission: 2026-01-24 00:09:42

GCA CTF

6 / 104 28964 / 43594

Using the Terminal

Time of First Successful Submission: 2026-01-13 16:28:32

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-13 16:29:14

Using the GUI Desktop

Time of First Successful Submission: 2026-01-13 16:31:09

Pasting into the Desktop

Time of First Successful Submission: 2026-01-13 16:32:36

Restarting Challenges

Time of First Successful Submission: 2026-01-13 16:33:39

Getting Help

Time of First Successful Submission: 2026-01-13 16:35:10