Yahir Romero

🐧

Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-10-17 16:17:05

Command Arguments

Time of First Successful Submission: 2026-10-17 16:18:00

Command History

Time of First Successful Submission: 2026-10-17 16:19:45

The Root Path

Time of First Successful Submission: 2026-10-17 16:20:49

Absolute Paths

Time of First Successful Submission: 2026-10-17 16:21:29

Changing position

Time of First Successful Submission: 2026-10-17 16:27:06

Changing to an Absolute Path

Time of First Successful Submission: 2026-10-17 16:30:21

Relative Paths

Time of First Successful Submission: 2026-10-17 16:31:13

Cat

Time of First Successful Submission: 2026-10-17 16:37:57

Ls

Time of First Successful Submission: 2026-10-17 16:44:06

Ls All

Time of First Successful Submission: 2026-10-17 16:48:36

Find

Time of First Successful Submission: 2026-10-17 17:01:54

Piping Echo

Time of First Successful Submission: 2026-10-17 18:20:14

Piping Stdout

Time of First Successful Submission: 2026-10-17 18:21:31

Piping Stdin

Time of First Successful Submission: 2026-10-17 18:23:33

Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-10-17 22:33:51

Path Traversal 2

Time of First Successful Submission: 2026-10-17 22:35:28

CMDi 1

Time of First Successful Submission: 2026-10-17 22:36:33

CMDi 2

Time of First Successful Submission: 2026-10-17 23:09:45

CMDi 3

Time of First Successful Submission: 2026-10-17 23:12:28

CMDi 4

Time of First Successful Submission: 2026-10-17 23:13:15

CMDi 5

Time of First Successful Submission: 2026-10-17 23:15:09

CMDi 6

Time of First Successful Submission: 2026-10-17 23:16:55

Authentication Bypass 1

Time of First Successful Submission: 2026-10-17 23:18:04

Authentication Bypass 2

Time of First Successful Submission: 2026-10-17 23:19:12

SQLi 1

Time of First Successful Submission: 2026-10-17 23:21:29

SQLi 2

Time of First Successful Submission: 2026-10-17 23:24:04

SQLi 3

Time of First Successful Submission: 2026-10-17 23:25:09

SQLi 4

Time of First Successful Submission: 2026-10-17 23:37:12

SQLi 5

Time of First Successful Submission: 2026-10-17 23:39:12

XSS 1

Time of First Successful Submission: 2026-10-17 23:46:44

XSS 2

Time of First Successful Submission: 2026-10-17 23:52:08

XSS 3

Time of First Successful Submission: 2026-10-17 23:54:18

XSS 4

Time of First Successful Submission: 2026-10-17 23:55:10

XSS 5

Time of First Successful Submission: 2026-10-17 23:58:51

XSS 6

Time of First Successful Submission: 2026-10-18 00:00:33

XSS 7

Time of First Successful Submission: 2026-10-18 00:02:49

CSRF 1

Time of First Successful Submission: 2026-10-18 00:17:47

CSRF 2

Time of First Successful Submission: 2026-10-18 00:21:40

CSRF 3

Time of First Successful Submission: 2026-10-18 00:25:05

CSRF 4

Time of First Successful Submission: 2026-10-18 01:35:50

CSRF 5

Time of First Successful Submission: 2026-10-18 01:42:31

Connect

Time of First Successful Submission: 2026-10-18 02:14:25

Send

Time of First Successful Submission: 2026-10-18 02:20:23

Shutdown

Time of First Successful Submission: 2026-10-18 02:21:31

Listen

Time of First Successful Submission: 2026-10-18 02:24:33

Scan 1

Time of First Successful Submission: 2026-10-18 02:26:57

Scan 2

Time of First Successful Submission: 2026-10-18 02:28:24

Monitor 1

Time of First Successful Submission: 2026-10-18 02:30:31

Monitor 2

Time of First Successful Submission: 2026-10-18 02:36:16

Sniffing Cookies

Time of First Successful Submission: 2026-10-18 02:38:28

Network Configuration

Time of First Successful Submission: 2026-10-18 02:48:51

Firewall 1

Time of First Successful Submission: 2026-10-18 02:50:23

Firewall 2

Time of First Successful Submission: 2026-10-18 02:51:19

Firewall 3

Time of First Successful Submission: 2026-10-18 02:53:22

Denial of Service 1

Time of First Successful Submission: 2026-10-18 02:57:00

Denial of Service 2

Time of First Successful Submission: 2026-10-18 02:59:17

Denial of Service 3

Time of First Successful Submission: 2026-10-18 03:08:39

Ethernet

Time of First Successful Submission: 2026-10-18 03:16:13

IP

Time of First Successful Submission: 2026-10-18 03:18:38

TCP

Time of First Successful Submission: 2026-10-18 03:19:34

TCP Handshake

Time of First Successful Submission: 2026-10-18 03:20:40

UDP

Time of First Successful Submission: 2026-10-18 03:24:25

UDP 2

Time of First Successful Submission: 2026-10-18 03:26:46

UDP Spoofing 1

Time of First Successful Submission: 2026-10-18 03:28:05

UDP Spoofing 2

Time of First Successful Submission: 2026-10-18 03:30:27

UDP Spoofing 3

Time of First Successful Submission: 2026-10-18 03:33:19

UDP Spoofing 4

Time of First Successful Submission: 2026-10-18 03:35:54

ARP

Time of First Successful Submission: 2026-10-18 03:37:39

Intercept

Time of First Successful Submission: 2026-10-18 03:56:34

Man-in-the-Middle

Time of First Successful Submission: 2026-10-18 04:31:25

XOR

Time of First Successful Submission: 2026-10-18 12:46:44

XORing Hex

Time of First Successful Submission: 2026-10-18 12:48:33

XORing ASCII

Time of First Successful Submission: 2026-10-18 12:50:52

XORing ASCII Strings

Time of First Successful Submission: 2026-10-18 12:53:02

One-time Pad

Time of First Successful Submission: 2026-10-18 12:54:47

One-time Pad Tampering

Time of First Successful Submission: 2026-10-18 12:56:32

Many-time Pad

Time of First Successful Submission: 2026-10-18 12:57:49

AES

Time of First Successful Submission: 2026-10-18 12:58:58

AES-ECB-CPA

Time of First Successful Submission: 2026-10-18 13:02:48

AES-ECB-CPA-HTTP

Time of First Successful Submission: 2026-10-18 13:04:32

AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-10-18 13:05:40

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-10-18 13:06:53

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-10-18 13:08:37

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-10-18 13:09:24

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-10-18 13:11:05

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-10-18 13:16:45

AES-CBC

Time of First Successful Submission: 2026-10-18 13:17:30

AES-CBC Tampering

Time of First Successful Submission: 2026-10-18 13:29:34

AES-CBC Resizing

Time of First Successful Submission: 2026-10-18 13:29:10

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-10-18 13:36:19

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2026-10-18 13:39:40

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-10-18 13:40:51

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2026-10-18 13:41:55

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2026-10-18 13:43:01

DHKE

Time of First Successful Submission: 2026-10-18 13:44:14

DHKE-to-AES

Time of First Successful Submission: 2026-10-18 13:45:19

RSA 1

Time of First Successful Submission: 2026-10-18 13:47:18

RSA 2

Time of First Successful Submission: 2026-10-18 13:48:08

RSA 3

Time of First Successful Submission: 2026-10-18 13:50:26

RSA 4

Time of First Successful Submission: 2026-10-18 13:53:43

RSA Signatures

Time of First Successful Submission: 2026-10-18 13:55:09

SHA 1

Time of First Successful Submission: 2026-10-18 14:00:20

SHA 2

Time of First Successful Submission: 2026-10-18 14:01:25

TLS 1

Time of First Successful Submission: 2026-10-18 14:30:49

TLS 2

Time of First Successful Submission: 2026-10-18 14:36:16

level1

Time of First Successful Submission: 2026-10-18 14:14:55

level2

Time of First Successful Submission: 2026-10-18 14:15:43

level3

Time of First Successful Submission: 2026-10-18 14:46:00

level4

Time of First Successful Submission: 2026-10-18 14:50:22

level5

Time of First Successful Submission: 2026-10-18 14:51:49

level6

Time of First Successful Submission: 2026-10-18 14:53:33

level7

Time of First Successful Submission: 2026-10-18 14:54:30

level8

Time of First Successful Submission: 2026-10-18 14:55:25

level9

Time of First Successful Submission: 2026-10-18 14:56:10

level10

Time of First Successful Submission: 2026-10-18 14:57:51

level11

Time of First Successful Submission: 2026-10-18 14:59:47

level12

Time of First Successful Submission: 2026-10-18 15:00:59

level13

Time of First Successful Submission: 2026-10-18 15:01:58

level14

Time of First Successful Submission: 2026-10-18 15:02:56

level15

Time of First Successful Submission: 2026-10-18 15:03:38

level16

Time of First Successful Submission: 2026-10-18 15:06:01

level17

Time of First Successful Submission: 2026-10-18 15:06:57

level18

Time of First Successful Submission: 2026-10-18 15:12:37

level19

Time of First Successful Submission: 2026-10-18 15:13:51

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-10-18 15:20:26

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-10-18 15:22:48

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-10-18 15:24:05

Reading Endianness (Python)

Time of First Successful Submission: 2026-10-18 15:24:58

Reading Endianness (C)

Time of First Successful Submission: 2026-10-18 15:26:11

Reading Endianness (x86)

Time of First Successful Submission: 2026-10-18 15:27:42

Version Information (Python)

Time of First Successful Submission: 2026-10-18 15:33:40

Version Information (C)

Time of First Successful Submission: 2026-10-18 15:35:10

Version Information (x86)

Time of First Successful Submission: 2026-10-18 15:29:12

Metadata and Data (Python)

Time of First Successful Submission: 2026-10-18 15:38:23

Metadata and Data (C)

Time of First Successful Submission: 2026-10-18 15:41:03

Metadata and Data (x86)

Time of First Successful Submission: 2026-10-18 15:42:02

Input Restrictions (Python)

Time of First Successful Submission: 2026-10-18 15:42:45

Input Restrictions (C)

Time of First Successful Submission: 2026-10-18 15:43:56

Input Restrictions (x86)

Time of First Successful Submission: 2026-10-18 15:45:26

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-10-18 15:46:37

Behold the cIMG! (C)

Time of First Successful Submission: 2026-10-18 15:48:03

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-10-18 15:49:23

A Basic cIMG (Python)

Time of First Successful Submission: 2026-10-18 15:50:16

A Basic cIMG (C)

Time of First Successful Submission: 2026-10-18 15:51:42

A Basic cIMG (x86)

Time of First Successful Submission: 2026-10-18 15:52:38

Internal State Mini (C)

Time of First Successful Submission: 2026-10-18 16:09:12

Internal State Mini (x86)

Time of First Successful Submission: 2026-10-18 16:20:47

Internal State (C)

Time of First Successful Submission: 2026-10-18 16:23:53

Internal State (x86)

Time of First Successful Submission: 2026-10-18 16:26:38

File Formats: Directives (C)

Time of First Successful Submission: 2026-10-18 18:00:33

File Formats: Directives (x86)

Time of First Successful Submission: 2026-10-18 18:03:36

The Patch Directive

Time of First Successful Submission: 2026-10-18 18:15:02

Optimizing for Space

Time of First Successful Submission: 2026-10-18 18:19:14

Tweaking Images

Time of First Successful Submission: 2026-10-18 16:38:26

Storage and Retrieval

Time of First Successful Submission: 2026-10-18 18:29:59

Extracting Knowledge

Time of First Successful Submission: 2026-10-18 16:56:48

Advanced Sprites

Time of First Successful Submission: 2026-10-18 18:35:54

Accessing Resources

Time of First Successful Submission: 2026-10-18 18:44:26

Unsafe Animations

Time of First Successful Submission: 2026-10-18 18:48:41

Animations

Time of First Successful Submission: 2026-10-18 19:11:25

Interoperability: Patching Data

Time of First Successful Submission: 2026-10-18 19:29:11

Patching Code

Time of First Successful Submission: 2026-10-19 20:11:37

Patching Control Flow

Time of First Successful Submission: 2026-10-19 20:21:52

Your First Overflow (easy)

Time of First Successful Submission: 2026-10-19 13:33:58

Your First Overflow (hard)

Time of First Successful Submission: 2026-10-19 13:34:43

Precision (easy)

Time of First Successful Submission: 2026-10-19 13:35:41

Precision (hard)

Time of First Successful Submission: 2026-10-19 13:37:18

Variable Control (easy)

Time of First Successful Submission: 2026-10-19 13:38:52

Variable Control (hard)

Time of First Successful Submission: 2026-10-19 13:39:52

Control Hijack (easy)

Time of First Successful Submission: 2026-10-19 13:40:47

Control Hijack (hard)

Time of First Successful Submission: 2026-10-19 13:41:34

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-10-19 13:43:49

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-10-19 13:44:57

PIEs (easy)

Time of First Successful Submission: 2026-10-19 13:48:15

PIEs (hard)

Time of First Successful Submission: 2026-10-19 13:50:13

String Lengths (easy)

Time of First Successful Submission: 2026-10-19 13:51:38

String Lengths (hard)

Time of First Successful Submission: 2026-10-19 13:54:11

Basic Shellcode

Time of First Successful Submission: 2026-10-19 13:55:18

NOP Sleds

Time of First Successful Submission: 2026-10-19 13:56:24

NULL-Free Shellcode

Time of First Successful Submission: 2026-10-19 13:57:05

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-10-19 13:59:52

Hijack to (Mapped) Shellcode (hard)

Time of First Successful Submission: 2026-10-19 14:36:46

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-10-19 14:43:53

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-10-19 14:47:57

ECB-to-Win (easy)

Time of First Successful Submission: 2026-10-19 14:52:23

ECB-to-Win (hard)

Time of First Successful Submission: 2026-10-19 14:55:54

ECB-to-Shellcode (easy)

Time of First Successful Submission: 2026-10-19 15:03:35

ECB-to-Shellcode (hard)

Time of First Successful Submission: 2026-10-19 15:11:23

CIMG Screenshots

Time of First Successful Submission: 2026-10-19 16:55:42

CIMG Screenshots 2

Time of First Successful Submission: 2026-10-19 17:38:59

Wily Webserver

Time of First Successful Submission: 2026-10-19 18:18:42

The Watering Hole

Time of First Successful Submission: 2026-10-19 18:37:41

Secure Chat 1

Time of First Successful Submission: 2026-10-19 18:52:40

Secure Chat 2

Time of First Successful Submission: 2026-10-19 23:37:16

Secure Chat 3

Time of First Successful Submission: 2026-10-20 14:45:49

Secure Chat 4

Time of First Successful Submission: 2026-10-20 14:08:56

Secure Chat 5

Time of First Successful Submission: 2026-10-20 14:39:55

Program Security

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ello ackers!

Time of First Successful Submission: 2026-10-20 03:28:08

Syscall Smuggler

Time of First Successful Submission: 2026-10-20 03:29:01

Syscall Shenanigans

Time of First Successful Submission: 2026-10-20 03:30:13

Byte Budget

Time of First Successful Submission: 2026-10-20 03:35:11

ClobberCode

Time of First Successful Submission: 2026-10-20 03:36:38

Diverse Delivery

Time of First Successful Submission: 2026-10-20 03:38:55

Pocket Payload

Time of First Successful Submission: 2026-10-20 03:39:48

Micro Menace

Time of First Successful Submission: 2026-10-20 03:40:47

Login Leakage (Easy)

Time of First Successful Submission: 2026-10-20 03:44:23

Login Leakage (Hard)

Time of First Successful Submission: 2026-10-20 03:46:57

Bounds Breaker (Easy)

Time of First Successful Submission: 2026-10-20 03:48:42

Bounds Breaker (Hard)

Time of First Successful Submission: 2026-10-20 03:52:30

Casting Catastrophe (Easy)

Time of First Successful Submission: 2026-10-20 03:54:48

Casting Catastrophe (Hard)

Time of First Successful Submission: 2026-10-20 03:56:21

Pointer Problems (Easy)

Time of First Successful Submission: 2026-10-20 03:57:42

Pointer Problems (Hard)

Time of First Successful Submission: 2026-10-20 04:01:00

Anomalous Array (Easy)

Time of First Successful Submission: 2026-10-20 04:03:19

Anomalous Array (Hard)

Time of First Successful Submission: 2026-10-20 04:04:33

Now you got it (Easy)

Time of First Successful Submission: 2026-10-20 04:08:21

Now you got it (Hard)

Time of First Successful Submission: 2026-10-20 04:11:39

Loop Lunacy (Easy)

Time of First Successful Submission: 2026-10-20 04:14:45

Loop Lunacy (Hard)

Time of First Successful Submission: 2026-10-20 15:00:58

Nosy Neighbor (Easy)

Time of First Successful Submission: 2026-10-20 15:02:53

Nosy Neighbor (Hard)

Time of First Successful Submission: 2026-10-20 15:06:58

Recursive Ruin (Easy)

Time of First Successful Submission: 2026-10-20 15:11:03

Recursive Ruin (Hard)

Time of First Successful Submission: 2026-10-20 15:17:39

Lingering Leftover (Easy)

Time of First Successful Submission: 2026-10-20 15:21:00

Lingering Leftover (Hard)

Time of First Successful Submission: 2026-10-20 15:22:11

Latent Leak (Easy)

Time of First Successful Submission: 2026-10-20 15:24:22

Latent Leak (Hard)

Time of First Successful Submission: 2026-10-20 15:48:06

Fork Foolery (Easy)

Time of First Successful Submission: 2026-10-20 15:54:44

Fork Foolery (Hard)

Time of First Successful Submission: 2026-10-20 15:58:14

Canary Conundrum (Easy)

Time of First Successful Submission: 2026-10-20 16:06:00

Canary Conundrum (Hard)

Time of First Successful Submission: 2026-10-20 16:13:05

A Crafty Clobber (Easy)

Time of First Successful Submission: 2026-10-20 16:26:00

A Crafty Clobber (Hard)

Time of First Successful Submission: 2026-10-20 17:32:30

Can It Fizz?

Time of First Successful Submission: 2026-10-20 17:45:03

Does It Buzz?

Time of First Successful Submission: 2026-10-20 17:51:16

Make It FizzBuzz

Time of First Successful Submission: 2026-10-20 17:59:22

Terrible Token (Easy)

Time of First Successful Submission: 2026-10-20 18:01:01

Terrible Token (Hard)

Time of First Successful Submission: 2026-10-20 18:04:20

Tangled Ticket (Easy)

Time of First Successful Submission: 2026-10-20 18:05:59

Tangled Ticket (Hard)

Time of First Successful Submission: 2026-10-20 18:07:04

Bit Bender

Time of First Successful Submission: 2026-10-20 18:08:43

Substitution Sorcery

Time of First Successful Submission: 2026-10-20 18:10:00

Meager Mangler (Easy)

Time of First Successful Submission: 2026-10-20 18:11:51

Meager Mangler (Hard)

Time of First Successful Submission: 2026-10-20 18:13:20

Monstrous Mangler (Easy)

Time of First Successful Submission: 2026-10-20 18:15:10

Monstrous Mangler (Hard)

Time of First Successful Submission: 2026-10-20 18:20:25

Patched Up (Easy)

Time of First Successful Submission: 2026-10-20 18:22:22

Patched Up (Hard)

Time of First Successful Submission: 2026-10-20 18:24:48

Puzzle Patch (Easy)

Time of First Successful Submission: 2026-10-20 18:26:44

Puzzle Patch (Hard)

Time of First Successful Submission: 2026-10-20 18:28:21

Patch Perfect (Easy)

Time of First Successful Submission: 2026-10-20 18:30:17

Patch Perfect (Hard)

Time of First Successful Submission: 2026-10-20 18:33:25

Trust the Yancode (Easy)

Time of First Successful Submission: 2026-10-20 18:37:25

Trust the Yancode (Hard)

Time of First Successful Submission: 2026-10-20 18:39:32

Know the Yancode (Easy)

Time of First Successful Submission: 2026-10-20 18:43:14

Know the Yancode (Hard)

Time of First Successful Submission: 2026-10-20 18:46:08

Master the Yancode (Easy)

Time of First Successful Submission: 2026-10-20 18:47:38

Master the Yancode (Hard)

Time of First Successful Submission: 2026-10-20 18:53:02

Transcend the Yancode (Easy)

Time of First Successful Submission: 2026-10-20 18:55:04

Transcend the Yancode (Hard)

Time of First Successful Submission: 2026-10-20 18:57:26

The Yanalyzer (Easy)

Time of First Successful Submission: 2026-10-20 18:59:20

The Yanalyzer (Hard)

Time of First Successful Submission: 2026-10-20 19:07:17

The Yangler (Easy)

Time of First Successful Submission: 2026-10-20 19:09:49

The Yangler (Hard)

Time of First Successful Submission: 2026-10-20 19:17:51

Yancraft (Easy)

Time of First Successful Submission: 2026-10-20 19:21:57

Yancraft (Hard)

Time of First Successful Submission: 2026-10-20 19:27:16

Yansanity (Easy)

Time of First Successful Submission: 2026-10-20 19:35:17

Yansanity (Hard)

Time of First Successful Submission: 2026-10-20 20:02:58

When the Cow Says Moo

Time of First Successful Submission: 2026-10-20 20:17:29

Predictable Migration

Time of First Successful Submission: 2026-10-20 20:22:31

Hashing Heifers

Time of First Successful Submission: 2026-10-20 20:26:53

Salty Stampede

Time of First Successful Submission: 2026-10-20 20:31:42

Loose Link (Easy)

Time of First Successful Submission: 2026-10-20 20:33:42

Loose Link (Hard)

Time of First Successful Submission: 2026-10-20 20:35:40

Call Chain (Easy)

Time of First Successful Submission: 2026-10-20 20:36:59

Call Chain (Hard)

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

Chain of Command (Easy)

Time of First Successful Submission: 2026-10-20 20:40:01

Chain of Command (Hard)

Time of First Successful Submission: 2026-10-20 20:41:00

Stop, Pop, and ROP (Easy)

Time of First Successful Submission: 2026-10-20 20:44:45

Stop, Pop, and ROP (Hard)

Time of First Successful Submission: 2026-10-20 20:46:25

Stop, Pop and ROP II (Easy)

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

Stop, Pop, and ROP II (Hard)

Time of First Successful Submission: 2026-10-20 20:50:43

Indirect Invocation (Easy)

Time of First Successful Submission: 2026-10-20 20:52:56

Indirect Invocation (Hard)

Time of First Successful Submission: 2026-10-20 20:54:46

Leaky Libc (Easy)

Time of First Successful Submission: 2026-10-20 21:00:23

Leaky Libc (Hard)

Time of First Successful Submission: 2026-10-20 21:02:42

Putsception (Easy)

Time of First Successful Submission: 2026-10-20 21:06:24

Putsception (Hard)

Time of First Successful Submission: 2026-10-20 21:08:32

Pivotal Prelude (Easy)

Time of First Successful Submission: 2026-10-20 21:16:11

Pivotal Prelude (Hard)

Time of First Successful Submission: 2026-10-20 21:21:30

Pivotal Pointer (Easy)

Time of First Successful Submission: 2026-10-20 21:27:50

Pivotal Pointer (Hard)

Time of First Successful Submission: 2026-10-20 21:30:49

Pivotal Payload (Easy)

Time of First Successful Submission: 2026-10-20 21:35:06

Pivotal Payload (Hard)

Time of First Successful Submission: 2026-10-20 21:39:29

Pivotal Pursuit (Easy)

Time of First Successful Submission: 2026-10-20 21:50:24

Pivotal Pursuit (Hard)

Time of First Successful Submission: 2026-10-20 21:56:37

Guarded Gadgets (Easy)

Time of First Successful Submission: 2026-10-20 22:17:58

Guarded Gadgets (Hard)

Time of First Successful Submission: 2026-10-20 22:22:57

ROP Roulette (Easy)

Time of First Successful Submission: 2026-10-20 22:41:48

ROP Roulette (Hard)

Time of First Successful Submission: 2026-10-21 01:36:41

Libc Lottery (Easy)

Time of First Successful Submission: 2026-10-21 01:44:59

Libc Lottery (Hard)

Time of First Successful Submission: 2026-10-21 01:55:29

Freebie (Easy)

Time of First Successful Submission: 2026-10-21 01:58:56

Freebie (Hard)

Time of First Successful Submission: 2026-10-21 02:01:24

Freebin Feint (Easy)

Time of First Successful Submission: 2026-10-21 02:03:19

Freebin Feint (Hard)

Time of First Successful Submission: 2026-10-21 02:05:24

Free Flag Fumble (Easy)

Time of First Successful Submission: 2026-10-21 02:07:03

Free Flag Fumble (Hard)

Time of First Successful Submission: 2026-10-21 02:08:39

Fickle Free (Easy)

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

Fickle Free (Hard)

Time of First Successful Submission: 2026-10-21 02:11:30

Malloc Mirage (Easy)

Time of First Successful Submission: 2026-10-21 02:14:07

Malloc Mirage (Hard)

Time of First Successful Submission: 2026-10-21 02:15:24

Seeking Secrets (Easy)

Time of First Successful Submission: 2026-10-21 02:20:14

Seeking Secrets (Hard)

Time of First Successful Submission: 2026-10-21 02:22:06

Seeking Substantial Secrets (Easy)

Time of First Successful Submission: 2026-10-21 02:26:14

Seeking Substantial Secrets (Hard)

Time of First Successful Submission: 2026-10-21 02:28:04

Seeking Spanless Secrets (Easy)

Time of First Successful Submission: 2026-10-21 02:32:58

Seeking Spanless Secrets (Hard)

Time of First Successful Submission: 2026-10-21 02:35:48

Seeking Smuggled Secrets (Easy)

Time of First Successful Submission: 2026-10-21 02:37:49

Seeking Smuggled Secrets (Hard)

Time of First Successful Submission: 2026-10-21 02:39:56

Sus Sequence (Easy)

Time of First Successful Submission: 2026-10-21 02:43:37

Sus Sequence (Hard)

Time of First Successful Submission: 2026-10-21 02:45:57

Echo Emanations (Easy)

Time of First Successful Submission: 2026-10-21 03:17:04

Echo Emanations (Hard)

Time of First Successful Submission: 2026-10-21 13:59:05

Stack Spoofing (Easy)

Time of First Successful Submission: 2026-10-21 14:03:02

Stack Spoofing (Hard)

Time of First Successful Submission: 2026-10-21 14:06:24

Stack Summoning (Easy)

Time of First Successful Submission: 2026-10-21 14:12:42

Stack Summoning (Hard)

Time of First Successful Submission: 2026-10-21 14:20:48

Enterprising Echo (Easy)

Time of First Successful Submission: 2026-10-21 14:25:13

Enterprising Echo (Hard)

Time of First Successful Submission: 2026-10-21 14:29:18

Ephemeral Echo (Easy)

Time of First Successful Submission: 2026-10-21 14:44:24

Ephemeral Echo (Hard)

Time of First Successful Submission: 2026-10-21 14:47:25

Seeking Safe Secrets (Easy)

Time of First Successful Submission: 2026-10-21 15:17:44

Seeking Safe Secrets (Hard)

Time of First Successful Submission: 2026-10-21 16:11:35

Sus Sequence Safety (Easy)

Time of First Successful Submission: 2026-10-21 16:20:05

Sus Sequence Safety (Hard)

Time of First Successful Submission: 2026-10-21 16:29:29

Safely Stack Summoning (Easy)

Time of First Successful Submission: 2026-10-21 16:41:13

Safely Stack Summoning (Hard)

Time of First Successful Submission: 2026-10-21 16:50:28

Overlapping Odyssey (Easy)

Time of First Successful Submission: 2026-10-21 17:20:40

Overlapping Odyssey (Hard)

Time of First Successful Submission: 2026-10-21 17:29:01

Tcache Terror (Easy)

Time of First Successful Submission: 2026-10-21 18:23:20

Tcache Terror (Hard)

Time of First Successful Submission: 2026-10-21 19:19:30

Containment Composition (Easy)

Time of First Successful Submission: 2026-10-21 19:28:01

Containment Composition (Hard)

Time of First Successful Submission: 2026-10-21 19:37:22

Constant Corruption (Easy)

Time of First Successful Submission: 2026-10-21 19:42:31

Constant Corruption (Hard)

Time of First Successful Submission: 2026-10-21 19:50:56

Return to YanLand (Easy)

Time of First Successful Submission: 2026-10-21 20:05:12

Return to YanLand (Hard)

Time of First Successful Submission: 2026-10-21 20:29:56

Escape from YanLand (Easy)

Time of First Successful Submission: 2026-10-21 20:37:19

Escape from YanLand (Hard)

Time of First Successful Submission: 2026-10-21 21:04:26

The YanFilter (Easy)

Time of First Successful Submission: 2026-10-21 21:15:00

The YanFilter (Hard)

Time of First Successful Submission: 2026-10-21 21:22:36

The Great YanFilter (Easy)

Time of First Successful Submission: 2026-10-21 21:37:23

The Great YanFilter (Hard)

Time of First Successful Submission: 2026-10-21 23:35:19

Yan85 Reborn (Easy)

Time of First Successful Submission: 2026-10-22 00:05:40

Yan85 Reborn (Hard)

Time of First Successful Submission: 2026-10-22 00:34:07

System Security

93 / 93 205 / 3931

chroot-escape-basic

Time of First Successful Submission: 2026-10-22 02:20:52

chroot-shellcode

Time of First Successful Submission: 2026-10-22 02:22:29

chroot-proper

Time of First Successful Submission: 2026-10-22 02:24:19

seccomp-basic

Time of First Successful Submission: 2026-10-22 02:26:38

seccomp-linkat

Time of First Successful Submission: 2026-10-22 02:28:10

seccomp-fchdir

Time of First Successful Submission: 2026-10-22 02:29:39

seccomp-rechroot

Time of First Successful Submission: 2026-10-22 02:32:16

seccomp-only

Time of First Successful Submission: 2026-10-22 02:37:41

seccomp-arch32

Time of First Successful Submission: 2026-10-22 02:40:00

seccomp-minimal

Time of First Successful Submission: 2026-10-22 02:42:37

seccomp-timebased

Time of First Successful Submission: 2026-10-22 02:45:36

seccomp-readonly

Time of First Successful Submission: 2026-10-22 02:47:12

process-isolation

Time of First Successful Submission: 2026-10-22 02:51:38

mount-namespace

Time of First Successful Submission: 2026-10-22 03:10:31

mount-cleanup

Time of First Successful Submission: 2026-10-22 03:13:43

mount-readonly

Time of First Successful Submission: 2026-10-22 03:15:35

mount-shellcode

Time of First Successful Submission: 2026-10-22 03:17:52

mount-bindmount

Time of First Successful Submission: 2026-10-22 03:20:33

level1.0

Time of First Successful Submission: 2026-10-22 13:52:17

level1.1

Time of First Successful Submission: 2026-10-22 13:53:28

level2.0

Time of First Successful Submission: 2026-10-22 13:55:06

level2.1

Time of First Successful Submission: 2026-10-22 13:56:49

level3.0

Time of First Successful Submission: 2026-10-22 14:00:56

level3.1

Time of First Successful Submission: 2026-10-22 14:05:05

level4.0

Time of First Successful Submission: 2026-10-22 14:06:57

level4.1

Time of First Successful Submission: 2026-10-22 14:08:38

level5.0

Time of First Successful Submission: 2026-10-22 14:11:44

level5.1

Time of First Successful Submission: 2026-10-22 14:15:52

level6.0

Time of First Successful Submission: 2026-10-22 14:18:46

level6.1

Time of First Successful Submission: 2026-10-22 14:21:17

level7.0

Time of First Successful Submission: 2026-10-22 14:24:52

level7.1

Time of First Successful Submission: 2026-10-22 14:29:44

level8.0

Time of First Successful Submission: 2026-10-22 14:32:52

level8.1

Time of First Successful Submission: 2026-10-22 14:35:27

level9.0

Time of First Successful Submission: 2026-10-22 14:42:54

level9.1

Time of First Successful Submission: 2026-10-22 14:48:17

level10.0

Time of First Successful Submission: 2026-10-22 14:50:59

level10.1

Time of First Successful Submission: 2026-10-22 14:54:06

level11.0

Time of First Successful Submission: 2026-10-22 15:01:23

level11.1

Time of First Successful Submission: 2026-10-22 15:50:56

level1.0

Time of First Successful Submission: 2026-10-22 15:56:49

level1.1

Time of First Successful Submission: 2026-10-22 15:58:18

level2.0

Time of First Successful Submission: 2026-10-22 15:59:43

level2.1

Time of First Successful Submission: 2026-10-22 16:03:24

level3.0

Time of First Successful Submission: 2026-10-22 16:06:40

level3.1

Time of First Successful Submission: 2026-10-22 16:07:56

level4.0

Time of First Successful Submission: 2026-10-22 16:09:24

level4.1

Time of First Successful Submission: 2026-10-22 16:11:11

level5.0

Time of First Successful Submission: 2026-10-22 17:09:19

level5.1

Time of First Successful Submission: 2026-10-22 17:16:43

level6.0

Time of First Successful Submission: 2026-10-22 17:19:37

level6.1

Time of First Successful Submission: 2026-10-22 17:21:50

level7.0

Time of First Successful Submission: 2026-10-22 17:29:21

level7.1

Time of First Successful Submission: 2026-10-22 17:36:08

level8.0

Time of First Successful Submission: 2026-10-22 17:44:38

level8.1

Time of First Successful Submission: 2026-10-22 17:48:33

level9.0

Time of First Successful Submission: 2026-10-22 17:54:37

level9.1

Time of First Successful Submission: 2026-10-22 17:56:48

level10.0

Time of First Successful Submission: 2026-10-22 18:04:40

level10.1

Time of First Successful Submission: 2026-10-22 18:13:41

level11.0

Time of First Successful Submission: 2026-10-22 18:24:12

level11.1

Time of First Successful Submission: 2026-10-22 19:10:56

level12.0

Time of First Successful Submission: 2026-10-22 20:20:00

level12.1

Time of First Successful Submission: 2026-10-22 20:24:35

Baby Spectre 1

Time of First Successful Submission: 2026-10-22 20:33:29

Baby Spectre 2

Time of First Successful Submission: 2026-10-23 01:11:00

Baby Spectre 3

Time of First Successful Submission: 2026-10-23 01:16:51

Baby Spectre 4

Time of First Successful Submission: 2026-10-23 01:21:50

Baby Spectre 5

Time of First Successful Submission: 2026-10-23 02:06:17

Prefetch Peek

Time of First Successful Submission: 2026-10-23 03:05:44

Spooky Spectre 1

Time of First Successful Submission: 2026-10-23 16:07:42

Spooky Spectre 2

Time of First Successful Submission: 2026-10-23 16:22:39

Yan85 Reloaded

Time of First Successful Submission: 2026-10-23 17:07:50

Ghost in the YPU 1

Time of First Successful Submission: 2026-10-24 02:49:58

Ghost in the YPU 2

Time of First Successful Submission: 2026-10-24 02:58:14

Molten Access

Time of First Successful Submission: 2026-10-24 03:01:40

Molten Walk

Time of First Successful Submission: 2026-10-24 03:08:35

level1.0

Time of First Successful Submission: 2026-10-23 19:28:41

level1.1

Time of First Successful Submission: 2026-10-23 19:33:48

level2.0

Time of First Successful Submission: 2026-10-23 20:15:54

level2.1

Time of First Successful Submission: 2026-10-23 20:20:04

level3.0

Time of First Successful Submission: 2026-10-23 20:47:46

level3.1

Time of First Successful Submission: 2026-10-23 20:59:44

level4.0

Time of First Successful Submission: 2026-10-23 21:13:35

level4.1

Time of First Successful Submission: 2026-10-23 21:15:36

level5.0

Time of First Successful Submission: 2026-10-23 21:29:12

level5.1

Time of First Successful Submission: 2026-10-23 21:30:58

level6.0

Time of First Successful Submission: 2026-10-24 01:27:58

level6.1

Time of First Successful Submission: 2026-10-24 01:30:24

level7.0

Time of First Successful Submission: 2026-10-24 01:34:02

level7.1

Time of First Successful Submission: 2026-10-24 01:42:29

level8.0

Time of First Successful Submission: 2026-10-24 01:48:08

level8.1

Time of First Successful Submission: 2026-10-24 01:53:48

Software Exploitation

90 / 90 143 / 2740

Level1.0

Time of First Successful Submission: 2026-10-24 14:22:10

Level1.1

Time of First Successful Submission: 2026-10-24 14:24:43

Level2.0

Time of First Successful Submission: 2026-10-24 14:27:08

Level2.1

Time of First Successful Submission: 2026-10-24 14:27:47

Level3.0

Time of First Successful Submission: 2026-10-24 14:31:17

Level3.1

Time of First Successful Submission: 2026-10-24 14:36:24

Level4.0

Time of First Successful Submission: 2026-10-24 14:39:33

Level4.1

Time of First Successful Submission: 2026-10-24 14:41:51

Level5.0

Time of First Successful Submission: 2026-10-24 14:52:57

Level5.1

Time of First Successful Submission: 2026-10-24 14:55:09

Level6.0

Time of First Successful Submission: 2026-10-24 14:58:05

Level6.1

Time of First Successful Submission: 2026-10-24 15:00:08

Level7.0

Time of First Successful Submission: 2026-10-24 15:02:16

Level7.1

Time of First Successful Submission: 2026-10-24 15:03:51

Level8.0

Time of First Successful Submission: 2026-10-24 15:08:14

Level8.1

Time of First Successful Submission: 2026-10-24 15:14:09

Level9.0

Time of First Successful Submission: 2026-10-24 15:17:02

Level9.1

Time of First Successful Submission: 2026-10-24 15:21:08

Level10.0

Time of First Successful Submission: 2026-10-24 15:36:09

Level10.1

Time of First Successful Submission: 2026-10-24 15:52:18

Level11.0

Time of First Successful Submission: 2026-10-24 16:07:54

Level11.1

Time of First Successful Submission: 2026-10-24 16:34:40

Level12.0

Time of First Successful Submission: 2026-10-24 16:41:31

Level12.1

Time of First Successful Submission: 2026-10-24 16:50:52

level1

Time of First Successful Submission: 2026-10-24 16:57:43

level2

Time of First Successful Submission: 2026-10-24 17:01:12

level3

Time of First Successful Submission: 2026-10-24 17:02:48

level4

Time of First Successful Submission: 2026-10-24 17:19:18

level5

Time of First Successful Submission: 2026-10-24 17:21:19

level6

Time of First Successful Submission: 2026-10-24 17:23:04

level7

Time of First Successful Submission: 2026-10-24 17:26:23

level8

Time of First Successful Submission: 2026-10-24 17:37:37

level9

Time of First Successful Submission: 2026-10-24 17:42:47

level10

Time of First Successful Submission: 2026-10-24 17:50:13

level11

Time of First Successful Submission: 2026-10-24 17:55:16

level12

Time of First Successful Submission: 2026-10-24 18:01:47

level13

Time of First Successful Submission: 2026-10-24 18:05:22

level14

Time of First Successful Submission: 2026-10-24 18:21:29

level15

Time of First Successful Submission: 2026-10-24 18:25:15

level16

Time of First Successful Submission: 2026-10-24 18:31:09

level17

Time of First Successful Submission: 2026-10-24 18:33:47

level18

Time of First Successful Submission: 2026-10-24 18:36:38

level19

Time of First Successful Submission: 2026-10-24 18:43:34

level20

Time of First Successful Submission: 2026-10-24 18:49:15

level21

Time of First Successful Submission: 2026-10-24 19:22:42

level1.0

Time of First Successful Submission: 2026-10-25 00:38:27

level1.1

Time of First Successful Submission: 2026-10-25 00:44:41

level2.0

Time of First Successful Submission: 2026-10-25 00:47:02

level2.1

Time of First Successful Submission: 2026-10-25 00:48:46

level3.0

Time of First Successful Submission: 2026-10-25 01:11:37

level3.1

Time of First Successful Submission: 2026-10-25 01:13:07

level4.0

Time of First Successful Submission: 2026-10-25 01:17:57

level4.1

Time of First Successful Submission: 2026-10-25 01:20:18

level5.0

Time of First Successful Submission: 2026-10-25 01:30:14

level5.1

Time of First Successful Submission: 2026-10-25 01:32:15

level6.0

Time of First Successful Submission: 2026-10-25 01:36:51

level6.1

Time of First Successful Submission: 2026-10-25 01:37:43

level7.0

Time of First Successful Submission: 2026-10-25 01:45:36

level7.1

Time of First Successful Submission: 2026-10-25 01:48:09

level8.0

Time of First Successful Submission: 2026-10-25 02:33:23

level8.1

Time of First Successful Submission: 2026-10-25 02:36:12

level9.0

Time of First Successful Submission: 2026-10-25 02:42:42

level9.1

Time of First Successful Submission: 2026-10-25 02:56:53

level10.0

Time of First Successful Submission: 2026-10-25 03:09:19

level10.1

Time of First Successful Submission: 2026-10-25 03:11:41

level1.0

Time of First Successful Submission: 2026-10-25 03:14:54

level1.1

Time of First Successful Submission: 2026-10-25 03:15:26

level2.0

Time of First Successful Submission: 2026-10-25 03:21:34

level2.1

Time of First Successful Submission: 2026-10-25 03:24:42

level3.0

Time of First Successful Submission: 2026-10-25 03:28:40

level3.1

Time of First Successful Submission: 2026-10-25 03:33:32

level4.0

Time of First Successful Submission: 2026-10-25 13:28:53

level4.1

Time of First Successful Submission: 2026-10-25 13:35:13

level5.0

Time of First Successful Submission: 2026-10-25 13:58:08

level5.1

Time of First Successful Submission: 2026-10-25 14:06:15

level6.0

Time of First Successful Submission: 2026-10-25 14:17:29

level6.1

Time of First Successful Submission: 2026-10-25 14:20:31

level7.0

Time of First Successful Submission: 2026-10-25 14:26:39

level7.1

Time of First Successful Submission: 2026-10-25 14:29:05

level8.0

Time of First Successful Submission: 2026-10-25 14:55:11

level8.1

Time of First Successful Submission: 2026-10-25 15:50:52

level9

Time of First Successful Submission: 2026-10-25 15:56:26

Level-1

Time of First Successful Submission: 2026-10-25 16:06:04

Level-2

Time of First Successful Submission: 2026-10-25 16:37:12

Level-3

Time of First Successful Submission: 2026-10-25 23:12:33

Level-4

Time of First Successful Submission: 2026-10-26 02:26:43

Level-5

Time of First Successful Submission: 2026-10-26 14:16:59

Level-6

Time of First Successful Submission: 2026-10-26 14:22:26

Level-7

Time of First Successful Submission: 2026-10-26 14:36:06

Level-8

Time of First Successful Submission: 2026-10-26 14:53:04

Start Here

10 / 10 20969 / 76657

Using the Terminal

Time of First Successful Submission: 2026-10-17 15:07:30

Using the VSCode Workspace

Time of First Successful Submission: 2026-10-17 15:11:04

Using the GUI Desktop

Time of First Successful Submission: 2026-10-17 15:18:03

Pasting into the Desktop

Time of First Successful Submission: 2026-10-17 16:01:16

Restarting Challenges

Time of First Successful Submission: 2026-10-17 16:03:36

Challenge Programs

Time of First Successful Submission: 2026-10-17 16:04:48

The Flag File

Time of First Successful Submission: 2026-10-17 16:06:06

Using Privileged Mode

Time of First Successful Submission: 2026-10-17 16:10:02

Persistent Home Directories - One

Time of First Successful Submission: 2026-10-17 16:11:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-10-17 16:12:50

Linux Luminarium

128 / 128 6154 / 55840

Intro to Commands

Time of First Successful Submission: 2026-10-17 16:17:05

Intro to Arguments

Time of First Successful Submission: 2026-10-17 16:18:00

Command History

Time of First Successful Submission: 2026-10-17 16:19:45

The Root

Time of First Successful Submission: 2026-10-17 16:20:49

Program and absolute paths

Time of First Successful Submission: 2026-10-17 16:21:29

Position thy self

Time of First Successful Submission: 2026-10-17 16:27:06

Position elsewhere

Time of First Successful Submission: 2026-10-17 16:30:21

implicit relative paths, from /

Time of First Successful Submission: 2026-10-17 16:31:13

explicit relative paths, from /

Time of First Successful Submission: 2026-10-17 16:33:31

implicit relative path

Time of First Successful Submission: 2026-10-17 16:32:43

home sweet home

Time of First Successful Submission: 2026-10-17 16:34:54

cat: not the pet, but the command!

Time of First Successful Submission: 2026-10-17 16:37:57

catting absolute paths

Time of First Successful Submission: 2026-10-17 16:38:54

more catting practice

Time of First Successful Submission: 2026-10-17 16:39:52

grepping for a needle in a haystack

Time of First Successful Submission: 2026-10-17 16:40:52

comparing files

Time of First Successful Submission: 2026-10-17 16:42:03

listing files

Time of First Successful Submission: 2026-10-17 16:44:06

touching files

Time of First Successful Submission: 2026-10-17 16:45:17

removing files

Time of First Successful Submission: 2026-10-17 16:46:03

moving files

Time of First Successful Submission: 2026-10-17 16:46:46

copying files

Time of First Successful Submission: 2026-10-17 16:47:16

hidden files

Time of First Successful Submission: 2026-10-17 16:48:36

An Epic Filesystem Quest

Time of First Successful Submission: 2026-10-17 16:56:50

making directories

Time of First Successful Submission: 2026-10-17 16:57:55

finding files

Time of First Successful Submission: 2026-10-17 17:01:54

linking files

Time of First Successful Submission: 2026-10-17 17:04:38

Learning From Documentation

Time of First Successful Submission: 2026-10-17 17:45:23

Learning Complex Usage

Time of First Successful Submission: 2026-10-17 17:48:01

Reading Manuals

Time of First Successful Submission: 2026-10-17 17:53:22

Searching Manuals

Time of First Successful Submission: 2026-10-17 17:56:28

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

Time of First Successful Submission: 2026-10-17 18:13:51

Tab completion

Time of First Successful Submission: 2026-10-17 18:14:42

Multiple options for tab completion

Time of First Successful Submission: 2026-10-17 18:16:49

Tab completion on commands

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Redirecting output

Time of First Successful Submission: 2026-10-17 18:20:14

Redirecting more output

Time of First Successful Submission: 2026-10-17 18:21:31

Appending output

Time of First Successful Submission: 2026-10-17 18:22:09

Redirecting errors

Time of First Successful Submission: 2026-10-17 18:22:49

Redirecting input

Time of First Successful Submission: 2026-10-17 18:23:33

Grepping stored results

Time of First Successful Submission: 2026-10-17 18:25:01

Grepping live output

Time of First Successful Submission: 2026-10-17 18:25:54

Grepping errors

Time of First Successful Submission: 2026-10-17 18:26:27

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: 2026-10-17 18:28:49

Process substitution for input

Time of First Successful Submission: 2026-10-17 18:29:35

Writing to multiple programs

Time of First Successful Submission: 2026-10-17 18:30:25

Split-piping stderr and stdout

Time of First Successful Submission: 2026-10-17 18:31:07

Named pipes

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Printing Variables

Time of First Successful Submission: 2026-10-17 18:36:34

Setting Variables

Time of First Successful Submission: 2026-10-17 18:37:29

Multi-word Variables

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Exporting Variables

Time of First Successful Submission: 2026-10-17 18:39:52

Printing Exported Variables

Time of First Successful Submission: 2026-10-17 18:40:41

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

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Using sudo

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Changing File Ownership

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Groups and Files

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Fun With Groups Names

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Changing Permissions

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Executable Files

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Permission Tweaking Practice

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Permissions Setting Practice

Time of First Successful Submission: 2026-10-17 19:39:18

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

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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)

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The PATH Variable

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Setting PATH

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Finding Commands

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Adding Commands

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Hijacking Commands

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Bashrc Backdoor

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Sniffing Input

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Overshared Directories

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Tricky Linking

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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 /

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DSU Cyber Camps

10 / 104 31492 / 77145

Using the Terminal

Time of First Successful Submission: 2026-10-17 15:07:30

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

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Challenge Programs

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The Flag File

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Using Privileged Mode

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Persistent Home Directories - One

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Persistent Home Directories - Two

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GCA CTF

10 / 104 31492 / 77145

Using the Terminal

Time of First Successful Submission: 2026-10-17 15:07:30

Using the VSCode Workspace

Time of First Successful Submission: 2026-10-17 15:11:04

Using the GUI Desktop

Time of First Successful Submission: 2026-10-17 15:18:03

Pasting into the Desktop

Time of First Successful Submission: 2026-10-17 16:01:16

Restarting Challenges

Time of First Successful Submission: 2026-10-17 16:03:36

Challenge Programs

Time of First Successful Submission: 2026-10-17 16:04:48

The Flag File

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Using Privileged Mode

Time of First Successful Submission: 2026-10-17 16:10:02

Persistent Home Directories - One

Time of First Successful Submission: 2026-10-17 16:11:26

Persistent Home Directories - Two

Time of First Successful Submission: 2026-10-17 16:12:50