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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-02-18 16:48:38

Command Arguments

Time of First Successful Submission: 2026-02-18 16:49:01

Command History

Time of First Successful Submission: 2026-02-18 16:49:26

The Root Path

Time of First Successful Submission: 2026-02-24 21:32:10

Absolute Paths

Time of First Successful Submission: 2026-02-24 21:41:49

Changing position

Time of First Successful Submission: 2026-02-24 21:43:37

Changing to an Absolute Path

Time of First Successful Submission: 2026-02-24 21:45:09

Relative Paths

Time of First Successful Submission: 2026-02-24 21:48:57

Cat

Time of First Successful Submission: 2026-03-08 06:11:27

Ls

Time of First Successful Submission: 2026-03-08 06:14:36

Ls All

Time of First Successful Submission: 2026-03-08 06:16:52

Find

Time of First Successful Submission: 2026-03-08 06:38:12

Piping Echo

Time of First Successful Submission: 2026-03-08 07:54:12

Piping Stdout

Time of First Successful Submission: 2026-03-08 07:54:43

Piping Stdin

Time of First Successful Submission: 2026-03-08 17:22:21

Program Security

13 / 162 4670 / 9396

Loose Link (Easy)

Time of First Successful Submission: 2026-03-04 22:07:39

Loose Link (Hard)

Time of First Successful Submission: 2026-03-04 22:10:45

Call Chain (Easy)

Time of First Successful Submission: 2026-03-04 22:24:12

Call Chain (Hard)

Time of First Successful Submission: 2026-03-04 22:51:47

Chain of Command (Easy)

Time of First Successful Submission: 2026-03-04 23:25:32

Chain of Command (Hard)

Time of First Successful Submission: 2026-03-04 23:36:18

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2026-03-05 13:37:21

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2026-03-05 13:33:17

Stop, Pop and ROP II (Easy)

Time of First Successful Submission: 2026-03-05 14:11:25

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2026-03-05 14:52:32

Indirect Invocation (Easy)

Time of First Successful Submission: 2026-03-05 16:57:39

Indirect Invocation (Hard)

Time of First Successful Submission: 2026-03-06 02:49:37

Leaky Libc (Easy)

Time of First Successful Submission: 2026-03-06 20:18:19

Software Exploitation

24 / 90 466 / 2094

Level1.0

Time of First Successful Submission: 2026-02-24 18:13:38

Level1.1

Time of First Successful Submission: 2026-02-24 18:18:32

Level2.0

Time of First Successful Submission: 2026-02-24 18:22:23

Level2.1

Time of First Successful Submission: 2026-02-24 18:26:31

Level3.0

Time of First Successful Submission: 2026-02-24 19:36:17

Level3.1

Time of First Successful Submission: 2026-02-24 20:32:07

Level4.0

Time of First Successful Submission: 2026-02-24 22:58:15

Level4.1

Time of First Successful Submission: 2026-02-24 23:27:23

Level5.0

Time of First Successful Submission: 2026-02-25 01:52:23

Level5.1

Time of First Successful Submission: 2026-02-25 17:23:20

Level6.0

Time of First Successful Submission: 2026-02-25 18:37:24

Level6.1

Time of First Successful Submission: 2026-02-25 18:59:21

Level7.0

Time of First Successful Submission: 2026-02-27 16:14:24

Level7.1

Time of First Successful Submission: 2026-02-27 16:36:37

Level8.0

Time of First Successful Submission: 2026-02-28 21:09:34

Level8.1

Time of First Successful Submission: 2026-02-28 22:41:23

Level9.0

Time of First Successful Submission: 2026-03-03 16:27:54

Level9.1

Time of First Successful Submission: 2026-03-03 16:57:42

Level10.0

Time of First Successful Submission: 2026-03-07 08:38:49

Level10.1

Time of First Successful Submission: 2026-03-08 00:22:20

Level11.0

Time of First Successful Submission: 2026-03-09 23:32:11

Level11.1

Time of First Successful Submission: 2026-03-10 14:17:03

Level12.0

Time of First Successful Submission: 2026-03-10 17:53:26

Level12.1

Time of First Successful Submission: 2026-03-10 20:38:31

Start Here

12 / 12 1303 / 42078

Using the Terminal

Time of First Successful Submission: 2026-02-18 15:48:05

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-18 15:51:46

Using the GUI Desktop

Time of First Successful Submission: 2026-02-18 15:53:04

Pasting into the Desktop

Time of First Successful Submission: 2026-02-18 15:54:49

Restarting Challenges

Time of First Successful Submission: 2026-02-18 16:35:41

Challenge Programs

Time of First Successful Submission: 2026-02-18 16:41:11

The Flag File

Time of First Successful Submission: 2026-02-18 16:42:18

Using Privileged Mode

Time of First Successful Submission: 2026-02-18 16:44:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-18 16:45:37

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-18 16:46:33

Linux Luminarium

128 / 128 2360 / 31441

Intro to Commands

Time of First Successful Submission: 2026-02-18 16:48:38

Intro to Arguments

Time of First Successful Submission: 2026-02-18 16:49:01

Command History

Time of First Successful Submission: 2026-02-18 16:49:26

The Root

Time of First Successful Submission: 2026-02-24 21:32:10

Program and absolute paths

Time of First Successful Submission: 2026-02-24 21:41:49

Position thy self

Time of First Successful Submission: 2026-02-24 21:43:37

Position elsewhere

Time of First Successful Submission: 2026-02-24 21:45:09

implicit relative paths, from /

Time of First Successful Submission: 2026-02-24 21:48:57

explicit relative paths, from /

Time of First Successful Submission: 2026-02-24 21:50:00

implicit relative path

Time of First Successful Submission: 2026-02-24 21:51:04

home sweet home

Time of First Successful Submission: 2026-02-24 21:52:54

cat: not the pet, but the command!

Time of First Successful Submission: 2026-03-08 06:11:27

catting absolute paths

Time of First Successful Submission: 2026-03-08 06:11:58

more catting practice

Time of First Successful Submission: 2026-03-08 06:12:34

grepping for a needle in a haystack

Time of First Successful Submission: 2026-03-08 06:13:11

comparing files

Time of First Successful Submission: 2026-03-08 06:14:07

listing files

Time of First Successful Submission: 2026-03-08 06:14:36

touching files

Time of First Successful Submission: 2026-03-08 06:15:05

removing files

Time of First Successful Submission: 2026-03-08 06:15:26

moving files

Time of First Successful Submission: 2026-03-08 06:15:55

copying files

Time of First Successful Submission: 2026-03-08 06:30:54

hidden files

Time of First Successful Submission: 2026-03-08 06:16:52

An Epic Filesystem Quest

Time of First Successful Submission: 2026-03-08 06:32:19

making directories

Time of First Successful Submission: 2026-03-08 06:33:18

finding files

Time of First Successful Submission: 2026-03-08 06:38:12

linking files

Time of First Successful Submission: 2026-03-08 06:44:23

Learning From Documentation

Time of First Successful Submission: 2026-03-08 06:47:58

Learning Complex Usage

Time of First Successful Submission: 2026-03-08 06:48:56

Reading Manuals

Time of First Successful Submission: 2026-03-08 06:51:54

Searching Manuals

Time of First Successful Submission: 2026-03-08 06:52:54

Searching For Manuals

Time of First Successful Submission: 2026-03-08 06:55:07

Helpful Programs

Time of First Successful Submission: 2026-03-08 06:56:14

Help for Builtins

Time of First Successful Submission: 2026-03-08 06:57:19

Matching with *

Time of First Successful Submission: 2026-03-08 07:02:04

Matching with ?

Time of First Successful Submission: 2026-03-08 07:02:37

Matching with []

Time of First Successful Submission: 2026-03-08 07:03:41

Matching paths with []

Time of First Successful Submission: 2026-03-08 07:05:10

Multiple globs

Time of First Successful Submission: 2026-03-08 07:05:51

Mixing globs

Time of First Successful Submission: 2026-03-08 07:06:51

Exclusionary globbing

Time of First Successful Submission: 2026-03-08 07:07:31

Tab completion

Time of First Successful Submission: 2026-03-08 07:08:14

Multiple options for tab completion

Time of First Successful Submission: 2026-03-08 07:09:12

Tab completion on commands

Time of First Successful Submission: 2026-03-08 07:09:41

Redirecting output

Time of First Successful Submission: 2026-03-08 07:54:12

Redirecting more output

Time of First Successful Submission: 2026-03-08 07:54:43

Appending output

Time of First Successful Submission: 2026-03-08 17:19:29

Redirecting errors

Time of First Successful Submission: 2026-03-08 17:21:19

Redirecting input

Time of First Successful Submission: 2026-03-08 17:22:21

Grepping stored results

Time of First Successful Submission: 2026-03-08 17:23:17

Grepping live output

Time of First Successful Submission: 2026-03-08 17:23:55

Grepping errors

Time of First Successful Submission: 2026-03-08 17:25:02

Filtering with grep -v

Time of First Successful Submission: 2026-03-08 17:25:40

Filtering with sed

Time of First Successful Submission: 2026-03-08 17:26:38

Duplicating piped data with tee

Time of First Successful Submission: 2026-03-08 17:31:37

Process substitution for input

Time of First Successful Submission: 2026-03-08 17:35:40

Writing to multiple programs

Time of First Successful Submission: 2026-03-08 17:37:56

Split-piping stderr and stdout

Time of First Successful Submission: 2026-03-08 17:42:06

Named pipes

Time of First Successful Submission: 2026-03-08 17:47:50

Printing Variables

Time of First Successful Submission: 2026-03-08 17:48:59

Setting Variables

Time of First Successful Submission: 2026-03-08 17:49:27

Multi-word Variables

Time of First Successful Submission: 2026-03-08 17:50:31

Exporting Variables

Time of First Successful Submission: 2026-03-08 17:51:48

Printing Exported Variables

Time of First Successful Submission: 2026-03-08 17:52:16

Storing Command Output

Time of First Successful Submission: 2026-03-08 17:54:02

Reading Input

Time of First Successful Submission: 2026-03-08 17:54:45

Reading Files

Time of First Successful Submission: 2026-03-08 17:55:54

Translating characters

Time of First Successful Submission: 2026-03-08 18:05:23

Deleting characters

Time of First Successful Submission: 2026-03-08 19:40:12

Deleting newlines

Time of First Successful Submission: 2026-03-08 19:41:20

Extracting the first lines with head

Time of First Successful Submission: 2026-03-08 19:50:22

Extracting specific sections of text

Time of First Successful Submission: 2026-03-08 19:54:30

Sorting data

Time of First Successful Submission: 2026-03-08 19:55:32

Listing Processes

Time of First Successful Submission: 2026-03-08 19:59:04

Killing Processes

Time of First Successful Submission: 2026-03-08 20:00:19

Interrupting Processes

Time of First Successful Submission: 2026-03-08 20:01:07

Killing Misbehaving Processes

Time of First Successful Submission: 2026-03-08 20:03:58

Suspending Processes

Time of First Successful Submission: 2026-03-08 20:04:33

Resuming Processes

Time of First Successful Submission: 2026-03-08 20:05:01

Backgrounding Processes

Time of First Successful Submission: 2026-03-08 20:05:55

Foregrounding Processes

Time of First Successful Submission: 2026-03-09 14:52:49

Starting Backgrounded Processes

Time of First Successful Submission: 2026-03-09 14:53:19

Process Exit Codes

Time of First Successful Submission: 2026-03-09 14:53:57

Becoming root with su

Time of First Successful Submission: 2026-03-08 07:13:38

Other users with su

Time of First Successful Submission: 2026-03-08 07:14:16

Cracking passwords

Time of First Successful Submission: 2026-03-08 07:18:12

Using sudo

Time of First Successful Submission: 2026-03-08 07:20:55

Changing File Ownership

Time of First Successful Submission: 2026-03-09 14:58:42

Groups and Files

Time of First Successful Submission: 2026-03-09 15:20:02

Fun With Groups Names

Time of First Successful Submission: 2026-03-09 15:20:59

Changing Permissions

Time of First Successful Submission: 2026-03-09 15:23:56

Executable Files

Time of First Successful Submission: 2026-03-09 15:24:33

Permission Tweaking Practice

Time of First Successful Submission: 2026-03-09 15:28:05

Permissions Setting Practice

Time of First Successful Submission: 2026-03-09 15:30:50

The SUID Bit

Time of First Successful Submission: 2026-03-09 15:32:34

Chaining with Semicolons

Time of First Successful Submission: 2026-03-09 15:33:12

Building on Success

Time of First Successful Submission: 2026-03-09 15:34:02

Handling Failure

Time of First Successful Submission: 2026-03-09 15:34:40

Your First Shell Script

Time of First Successful Submission: 2026-03-09 15:36:09

Redirecting Script Output

Time of First Successful Submission: 2026-03-09 15:37:11

Executable Shell Scripts

Time of First Successful Submission: 2026-03-09 15:37:56

Understanding Shebangs

Time of First Successful Submission: 2026-03-09 15:39:31

Scripting with Arguments

Time of First Successful Submission: 2026-03-09 15:40:11

Scripting with Conditionals

Time of First Successful Submission: 2026-03-09 15:41:39

Scripting with Default Cases

Time of First Successful Submission: 2026-03-09 15:42:34

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-03-09 16:33:41

Reading Shell Scripts

Time of First Successful Submission: 2026-03-09 16:35:02

Launching Screen

Time of First Successful Submission: 2026-03-09 16:36:16

Detaching and Attaching

Time of First Successful Submission: 2026-03-09 16:37:07

Finding Sessions

Time of First Successful Submission: 2026-03-09 16:38:03

Switching Windows

Time of First Successful Submission: 2026-03-09 16:38:43

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-03-09 16:39:55

Switching Windows (tmux)

Time of First Successful Submission: 2026-03-09 16:40:57

The PATH Variable

Time of First Successful Submission: 2026-03-09 16:42:15

Setting PATH

Time of First Successful Submission: 2026-03-09 16:43:25

Finding Commands

Time of First Successful Submission: 2026-03-09 16:44:02

Adding Commands

Time of First Successful Submission: 2026-03-09 16:46:46

Hijacking Commands

Time of First Successful Submission: 2026-03-09 16:48:00

Bashrc Backdoor

Time of First Successful Submission: 2026-03-09 16:49:26

Sniffing Input

Time of First Successful Submission: 2026-03-09 16:52:14

Overshared Directories

Time of First Successful Submission: 2026-03-09 16:54:26

Tricky Linking

Time of First Successful Submission: 2026-03-09 17:00:01

Sniffing Process Arguments

Time of First Successful Submission: 2026-03-09 17:02:03

Snooping on Configurations

Time of First Successful Submission: 2026-03-09 17:03:24

The Fork Bomb

Time of First Successful Submission: 2026-03-09 17:10:59

Disk-Space Doomsday

Time of First Successful Submission: 2026-03-09 17:12:56

rm -rf /

Time of First Successful Submission: 2026-03-09 17:15:24

Life after rm -rf /

Time of First Successful Submission: 2026-03-09 17:31:31

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-03-09 17:38:27

Computing 101

84 / 94 453 / 21116

Your First Register

Time of First Successful Submission: 2026-03-09 17:45:12

Your First Syscall

Time of First Successful Submission: 2026-03-09 17:45:48

Exit Codes

Time of First Successful Submission: 2026-03-09 17:46:32

Building Executables

Time of First Successful Submission: 2026-03-09 17:49:42

Moving Between Registers

Time of First Successful Submission: 2026-03-09 17:50:55

Loading From Memory

Time of First Successful Submission: 2026-03-09 18:10:24

More Loading Practice

Time of First Successful Submission: 2026-03-09 18:12:48

Dereferencing Pointers

Time of First Successful Submission: 2026-03-09 18:35:33

Dereferencing Yourself

Time of First Successful Submission: 2026-03-09 18:36:18

Dereferencing with Offsets

Time of First Successful Submission: 2026-03-09 18:39:55

Stored Addresses

Time of First Successful Submission: 2026-03-09 18:41:16

Double Dereference

Time of First Successful Submission: 2026-03-09 18:42:34

The Stack

Time of First Successful Submission: 2026-03-09 18:45:36

Stack Offsets

Time of First Successful Submission: 2026-03-09 18:46:30

Program Arguments on the Stack

Time of First Successful Submission: 2026-03-09 18:47:47

Popping From the Stack

Time of First Successful Submission: 2026-03-09 18:48:28

Disassembling Programs

Time of First Successful Submission: 2026-03-10 20:43:16

Tracing Syscalls

Time of First Successful Submission: 2026-03-10 20:44:46

Starting GDB

Time of First Successful Submission: 2026-03-10 20:45:22

Quitting GDB

Time of First Successful Submission: 2026-03-10 20:45:55

Starting Programs in GDB

Time of First Successful Submission: 2026-03-10 20:47:51

Disassembling in GDB

Time of First Successful Submission: 2026-03-10 20:48:52

Stepping Through Instructions

Time of First Successful Submission: 2026-03-10 20:49:28

Reading Register Values

Time of First Successful Submission: 2026-03-10 20:54:36

Popping Stack Values

Time of First Successful Submission: 2026-03-10 20:55:08

Examining Memory

Time of First Successful Submission: 2026-03-10 20:55:55

Examining Stack Pointers

Time of First Successful Submission: 2026-03-10 20:57:01

Cooperative Debugging

Time of First Successful Submission: 2026-03-10 21:20:15

Writing Output

Time of First Successful Submission: 2026-03-10 21:29:13

Chaining Syscalls

Time of First Successful Submission: 2026-03-10 21:31:00

Writing Strings

Time of First Successful Submission: 2026-03-10 21:31:33

Reading Data

Time of First Successful Submission: 2026-03-10 21:34:35

Opening Files

Time of First Successful Submission: 2026-03-10 21:39:01

Hardcoding the Filename

Time of First Successful Submission: 2026-03-10 21:44:45

Comparing Values

Time of First Successful Submission: 2026-03-11 15:28:16

Comparing Characters

Time of First Successful Submission: 2026-03-11 15:48:20

Conditional Control Flow

Time of First Successful Submission: 2026-03-11 15:51:02

Comparing Strings

Time of First Successful Submission: 2026-03-11 15:54:35

Reverse the Password

Time of First Successful Submission: 2026-03-11 15:59:33

Conditionals Without Conditionals

Time of First Successful Submission: 2026-03-11 16:08:46

Looping

Time of First Successful Submission: 2026-03-11 16:12:35

Reverse the Calculation

Time of First Successful Submission: 2026-03-11 16:13:45

Reverse the Reverse

Time of First Successful Submission: 2026-03-11 16:17:02

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-03-11 16:21:22

Loops on Data

Time of First Successful Submission: 2026-03-11 16:22:38

set-register

Time of First Successful Submission: 2026-03-11 16:24:57

set-multiple-registers

Time of First Successful Submission: 2026-03-11 16:26:00

add-to-register

Time of First Successful Submission: 2026-03-11 16:26:46

linear-equation-registers

Time of First Successful Submission: 2026-03-11 16:30:46

integer-division

Time of First Successful Submission: 2026-03-11 16:32:44

modulo-operation

Time of First Successful Submission: 2026-03-11 16:34:18

set-upper-byte

Time of First Successful Submission: 2026-03-11 16:35:47

efficient-modulo

Time of First Successful Submission: 2026-03-11 16:42:21

byte-extraction

Time of First Successful Submission: 2026-03-11 16:50:15

bitwise-and

Time of First Successful Submission: 2026-03-11 16:52:28

check-even

Time of First Successful Submission: 2026-03-14 03:52:13

memory-read

Time of First Successful Submission: 2026-03-14 03:53:20

memory-write

Time of First Successful Submission: 2026-03-14 03:54:23

memory-increment

Time of First Successful Submission: 2026-03-14 03:57:30

byte-access

Time of First Successful Submission: 2026-03-14 03:58:52

memory-size-access

Time of First Successful Submission: 2026-03-14 04:03:33

little-endian-write

Time of First Successful Submission: 2026-03-14 04:09:28

memory-sum

Time of First Successful Submission: 2026-03-14 04:12:20

stack-subtraction

Time of First Successful Submission: 2026-03-14 04:13:33

swap-stack-values

Time of First Successful Submission: 2026-03-14 04:14:44

average-stack-values

Time of First Successful Submission: 2026-03-14 04:20:41

absolute-jump

Time of First Successful Submission: 2026-03-14 04:24:00

relative-jump

Time of First Successful Submission: 2026-03-14 19:28:08

jump-trampoline

Time of First Successful Submission: 2026-03-14 19:29:36

conditional-jump

Time of First Successful Submission: 2026-03-14 19:55:15

indirect-jump

Time of First Successful Submission: 2026-03-14 20:34:14

average-loop

Time of First Successful Submission: 2026-03-14 20:54:57

count-non-zero

Time of First Successful Submission: 2026-03-14 21:02:02

string-lower

Time of First Successful Submission: 2026-03-15 01:42:15

most-common-byte

Time of First Successful Submission: 2026-03-15 18:20:47

Exit

Time of First Successful Submission: 2026-03-15 19:12:22

Socket

Time of First Successful Submission: 2026-03-15 19:33:02

Bind

Time of First Successful Submission: 2026-03-15 21:55:13

Listen

Time of First Successful Submission: 2026-03-15 21:58:50

Accept

Time of First Successful Submission: 2026-03-15 22:07:07

Static Response

Time of First Successful Submission: 2026-03-15 22:33:21

Dynamic Response

Time of First Successful Submission: 2026-03-16 03:42:29

Iterative GET Server

Time of First Successful Submission: 2026-03-16 03:49:29

Concurrent GET Server

Time of First Successful Submission: 2026-03-16 04:09:09

Playing With Programs

2 / 116 21430 / 23119

What's the password?

Time of First Successful Submission: 2026-02-18 16:51:54

... and again!

Time of First Successful Submission: 2026-02-18 16:52:33

GCA CTF

12 / 104 1525 / 42355

Using the Terminal

Time of First Successful Submission: 2026-02-18 15:48:05

Using the VSCode Workspace

Time of First Successful Submission: 2026-02-18 15:51:46

Using the GUI Desktop

Time of First Successful Submission: 2026-02-18 15:53:04

Pasting into the Desktop

Time of First Successful Submission: 2026-02-18 15:54:49

Connecting over SSH

Time of First Successful Submission: 2026-02-18 16:33:05

Restarting Challenges

Time of First Successful Submission: 2026-02-18 16:35:41

Getting Help

Time of First Successful Submission: 2026-02-18 16:36:59

Challenge Programs

Time of First Successful Submission: 2026-02-18 16:41:11

The Flag File

Time of First Successful Submission: 2026-02-18 16:42:18

Using Privileged Mode

Time of First Successful Submission: 2026-02-18 16:44:22

Persistent Home Directories - One

Time of First Successful Submission: 2026-02-18 16:45:37

Persistent Home Directories - Two

Time of First Successful Submission: 2026-02-18 16:46:33

Pwntools Tutorials

12 / 12 337 / 1192

Level 0.0

Time of First Successful Submission: 2026-02-26 16:55:20

Level 1.0

Time of First Successful Submission: 2026-02-26 17:04:10

Level 1.1

Time of First Successful Submission: 2026-02-26 17:12:03

Level 2.0

Time of First Successful Submission: 2026-02-26 17:13:59

Level 2.1

Time of First Successful Submission: 2026-02-26 17:24:27

Level 2.2

Time of First Successful Submission: 2026-02-26 17:31:38

Level 2.3

Time of First Successful Submission: 2026-02-26 17:34:57

Level 2.4

Time of First Successful Submission: 2026-02-26 17:37:23

Level 2.5

Time of First Successful Submission: 2026-02-26 17:42:44

Level 2.6

Time of First Successful Submission: 2026-02-26 17:46:46

Level 3.0

Time of First Successful Submission: 2026-02-26 20:04:18

Level 4.0

Time of First Successful Submission: 2026-02-26 20:40:38

Westworld Dojo

2 / 2 26 / 29

Bossfmt

Time of First Successful Submission: 2026-03-13 00:45:01

BossfmtRevenge

Time of First Successful Submission: 2026-03-13 23:59:06