prabal.malavalli

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Intro to Programming Languages

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Commands

Time of First Successful Submission: 2026-01-14 19:18:50

Command Arguments

Time of First Successful Submission: 2026-01-14 19:21:26

Command History

Time of First Successful Submission: 2026-01-14 19:26:08

The Root Path

Time of First Successful Submission: 2026-01-14 19:27:54

Absolute Paths

Time of First Successful Submission: 2026-01-14 19:29:27

Changing position

Time of First Successful Submission: 2026-01-14 19:44:01

Changing to an Absolute Path

Time of First Successful Submission: 2026-01-14 19:47:40

Relative Paths

Time of First Successful Submission: 2026-01-14 19:53:24

Cat

Time of First Successful Submission: 2026-01-14 20:06:26

Ls

Time of First Successful Submission: 2026-01-14 20:29:36

Ls All

Time of First Successful Submission: 2026-01-14 22:34:26

Find

Time of First Successful Submission: 2026-01-14 23:26:18

Piping Echo

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

Piping Stdout

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

Piping Stdin

Time of First Successful Submission: 2026-01-15 01:17:39

Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2026-02-06 22:58:04

Path Traversal 2

Time of First Successful Submission: 2026-02-06 23:04:49

CMDi 1

Time of First Successful Submission: 2026-02-06 23:06:14

CMDi 2

Time of First Successful Submission: 2026-02-07 18:38:03

CMDi 3

Time of First Successful Submission: 2026-02-07 18:39:52

CMDi 4

Time of First Successful Submission: 2026-02-07 18:41:33

CMDi 5

Time of First Successful Submission: 2026-02-07 18:43:59

Authentication Bypass 1

Time of First Successful Submission: 2026-02-07 18:45:36

Authentication Bypass 2

Time of First Successful Submission: 2026-02-07 18:47:24

SQLi 1

Time of First Successful Submission: 2026-02-07 18:49:53

SQLi 2

Time of First Successful Submission: 2026-02-07 18:51:30

SQLi 3

Time of First Successful Submission: 2026-02-07 18:54:05

SQLi 4

Time of First Successful Submission: 2026-02-07 18:56:16

SQLi 5

Time of First Successful Submission: 2026-02-07 19:01:57

XSS 1

Time of First Successful Submission: 2026-02-09 19:24:33

XSS 2

Time of First Successful Submission: 2026-02-09 19:25:51

XSS 3

Time of First Successful Submission: 2026-02-09 19:27:29

XSS 4

Time of First Successful Submission: 2026-02-09 19:29:19

XSS 5

Time of First Successful Submission: 2026-02-09 19:34:27

XSS 6

Time of First Successful Submission: 2026-02-09 19:37:53

XSS 7

Time of First Successful Submission: 2026-02-09 19:44:27

CSRF 1

Time of First Successful Submission: 2026-02-09 19:50:20

CSRF 2

Time of First Successful Submission: 2026-02-09 19:56:16

CSRF 3

Time of First Successful Submission: 2026-02-09 20:04:55

CSRF 4

Time of First Successful Submission: 2026-02-09 20:13:35

CSRF 5

Time of First Successful Submission: 2026-02-09 20:21:33

Connect

Time of First Successful Submission: 2026-04-15 20:27:46

Send

Time of First Successful Submission: 2026-04-15 20:30:29

Shutdown

Time of First Successful Submission: 2026-04-15 20:40:17

Listen

Time of First Successful Submission: 2026-04-15 20:42:51

Scan 1

Time of First Successful Submission: 2026-04-15 20:53:04

Scan 2

Time of First Successful Submission: 2026-04-15 21:01:10

Monitor 1

Time of First Successful Submission: 2026-04-15 21:06:16

Monitor 2

Time of First Successful Submission: 2026-04-15 21:42:02

Sniffing Cookies

Time of First Successful Submission: 2026-04-15 21:48:09

Network Configuration

Time of First Successful Submission: 2026-04-15 21:52:15

Firewall 1

Time of First Successful Submission: 2026-04-15 21:54:29

Firewall 2

Time of First Successful Submission: 2026-04-15 21:56:16

Firewall 3

Time of First Successful Submission: 2026-04-15 21:59:03

Denial of Service 1

Time of First Successful Submission: 2026-04-15 22:11:10

Denial of Service 2

Time of First Successful Submission: 2026-04-15 22:14:42

Denial of Service 3

Time of First Successful Submission: 2026-04-15 22:59:06

Ethernet

Time of First Successful Submission: 2026-04-15 23:11:50

IP

Time of First Successful Submission: 2026-04-16 00:17:02

TCP

Time of First Successful Submission: 2026-04-16 00:25:31

TCP Handshake

Time of First Successful Submission: 2026-04-16 00:27:36

UDP

Time of First Successful Submission: 2026-04-16 00:30:07

UDP 2

Time of First Successful Submission: 2026-04-16 00:32:41

UDP Spoofing 1

Time of First Successful Submission: 2026-04-16 00:36:14

UDP Spoofing 2

Time of First Successful Submission: 2026-04-16 01:16:17

UDP Spoofing 3

Time of First Successful Submission: 2026-04-16 01:19:10

UDP Spoofing 4

Time of First Successful Submission: 2026-04-16 01:23:09

ARP

Time of First Successful Submission: 2026-04-16 01:24:08

Intercept

Time of First Successful Submission: 2026-04-20 19:25:36

XOR

Time of First Successful Submission: 2026-04-23 04:17:31

XORing Hex

Time of First Successful Submission: 2026-04-24 23:30:09

XORing ASCII

Time of First Successful Submission: 2026-04-24 23:33:18

XORing ASCII Strings

Time of First Successful Submission: 2026-04-24 23:39:08

One-time Pad

Time of First Successful Submission: 2026-04-24 23:41:22

One-time Pad Tampering

Time of First Successful Submission: 2026-04-24 23:49:00

Many-time Pad

Time of First Successful Submission: 2026-04-24 23:53:47

AES

Time of First Successful Submission: 2026-04-24 23:56:35

AES-ECB-CPA

Time of First Successful Submission: 2026-04-25 00:01:33

AES-ECB-CPA-HTTP

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AES-ECB-CPA-HTTP (base64)

Time of First Successful Submission: 2026-04-25 00:06:58

AES-ECB-CPA-Suffix

Time of First Successful Submission: 2026-04-25 00:10:20

AES-ECB-CPA-Prefix

Time of First Successful Submission: 2026-04-25 00:13:24

AES-ECB-CPA-Prefix-2

Time of First Successful Submission: 2026-04-25 00:15:34

AES-ECB-CPA-Prefix-Miniboss

Time of First Successful Submission: 2026-04-25 00:17:15

AES-ECB-CPA-Prefix-Boss

Time of First Successful Submission: 2026-04-25 00:22:35

AES-CBC

Time of First Successful Submission: 2026-04-25 00:25:51

AES-CBC Tampering

Time of First Successful Submission: 2026-04-25 00:30:35

AES-CBC Resizing

Time of First Successful Submission: 2026-04-25 00:35:25

AES-CBC-POA-Partial-Block

Time of First Successful Submission: 2026-04-25 00:56:16

AES-CBC-POA-Full-Block

Time of First Successful Submission: 2026-04-25 01:04:27

AES-CBC-POA-Multi-Block

Time of First Successful Submission: 2026-04-25 01:13:50

AES-CBC-POA-Encrypt

Time of First Successful Submission: 2026-05-03 01:41:44

AES-CBC-POA-Encrypt-2

Time of First Successful Submission: 2026-05-03 01:42:53

DHKE

Time of First Successful Submission: 2026-05-03 00:44:34

DHKE-to-AES

Time of First Successful Submission: 2026-05-03 00:46:38

RSA 1

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RSA 2

Time of First Successful Submission: 2026-05-03 01:00:51

RSA 3

Time of First Successful Submission: 2026-05-03 01:02:35

RSA 4

Time of First Successful Submission: 2026-05-03 01:08:46

RSA Signatures

Time of First Successful Submission: 2026-05-03 01:11:49

SHA 1

Time of First Successful Submission: 2026-05-03 01:16:11

SHA 2

Time of First Successful Submission: 2026-05-03 01:20:25

TLS 1

Time of First Successful Submission: 2026-05-03 01:34:47

TLS 2

Time of First Successful Submission: 2026-05-03 01:37:41

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-03-19 02:54:52

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-03-19 03:46:12

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-03-19 03:50:56

Reading Endianness (Python)

Time of First Successful Submission: 2026-03-19 04:18:04

Reading Endianness (C)

Time of First Successful Submission: 2026-03-19 04:25:26

Reading Endianness (x86)

Time of First Successful Submission: 2026-03-19 04:47:41

Version Information (Python)

Time of First Successful Submission: 2026-03-23 00:40:31

Version Information (C)

Time of First Successful Submission: 2026-03-23 00:42:46

Version Information (x86)

Time of First Successful Submission: 2026-03-23 00:51:22

Metadata and Data (Python)

Time of First Successful Submission: 2026-03-23 00:59:36

Metadata and Data (C)

Time of First Successful Submission: 2026-03-23 01:07:30

Metadata and Data (x86)

Time of First Successful Submission: 2026-03-23 01:36:41

Input Restrictions (Python)

Time of First Successful Submission: 2026-03-23 01:40:28

Input Restrictions (C)

Time of First Successful Submission: 2026-03-23 01:47:04

Input Restrictions (x86)

Time of First Successful Submission: 2026-03-23 01:52:19

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-03-23 01:57:22

Behold the cIMG! (C)

Time of First Successful Submission: 2026-03-23 02:02:22

Behold the cIMG! (x86)

Time of First Successful Submission: 2026-03-23 02:05:49

A Basic cIMG (Python)

Time of First Successful Submission: 2026-03-23 02:09:36

A Basic cIMG (C)

Time of First Successful Submission: 2026-03-23 02:54:43

A Basic cIMG (x86)

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

Internal State Mini (C)

Time of First Successful Submission: 2026-03-23 22:00:21

Internal State Mini (x86)

Time of First Successful Submission: 2026-03-23 22:20:04

Internal State (C)

Time of First Successful Submission: 2026-03-23 22:30:39

Internal State (x86)

Time of First Successful Submission: 2026-03-23 22:38:06

File Formats: Directives (C)

Time of First Successful Submission: 2026-03-23 22:51:51

File Formats: Directives (x86)

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

The Patch Directive

Time of First Successful Submission: 2026-05-03 02:03:45

Accessing Resources

Time of First Successful Submission: 2026-05-05 06:35:40

Unsafe Animations

Time of First Successful Submission: 2026-05-05 06:42:37

Your First Overflow (easy)

Time of First Successful Submission: 2026-03-29 18:38:41

Your First Overflow (hard)

Time of First Successful Submission: 2026-03-29 18:41:45

Precision (easy)

Time of First Successful Submission: 2026-03-29 18:44:46

Precision (hard)

Time of First Successful Submission: 2026-03-29 18:47:27

Variable Control (easy)

Time of First Successful Submission: 2026-03-29 18:49:33

Variable Control (hard)

Time of First Successful Submission: 2026-03-29 18:51:49

Control Hijack (easy)

Time of First Successful Submission: 2026-03-29 18:54:12

Control Hijack (hard)

Time of First Successful Submission: 2026-03-29 18:56:05

Tricky Control Hijack (easy)

Time of First Successful Submission: 2026-03-29 18:59:51

Tricky Control Hijack (hard)

Time of First Successful Submission: 2026-03-29 19:03:43

PIEs (easy)

Time of First Successful Submission: 2026-04-06 01:36:08

PIEs (hard)

Time of First Successful Submission: 2026-04-08 19:45:24

String Lengths (easy)

Time of First Successful Submission: 2026-05-05 07:21:35

Basic Shellcode

Time of First Successful Submission: 2026-04-06 02:11:19

NOP Sleds

Time of First Successful Submission: 2026-04-06 02:14:39

NULL-Free Shellcode

Time of First Successful Submission: 2026-04-06 02:18:41

Hijack to (Mapped) Shellcode (easy)

Time of First Successful Submission: 2026-05-05 07:31:46

Hijack to Shellcode (easy)

Time of First Successful Submission: 2026-04-06 02:46:21

Hijack to Shellcode (hard)

Time of First Successful Submission: 2026-04-06 03:04:22

Start Here

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Using the Terminal

Time of First Successful Submission: 2026-01-14 18:53:19

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 18:55:41

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 18:58:15

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 19:01:21

Restarting Challenges

Time of First Successful Submission: 2026-01-14 19:17:34

Linux Luminarium

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Intro to Commands

Time of First Successful Submission: 2026-01-14 19:18:50

Intro to Arguments

Time of First Successful Submission: 2026-01-14 19:21:26

Command History

Time of First Successful Submission: 2026-01-14 19:26:08

The Root

Time of First Successful Submission: 2026-01-14 19:27:54

Program and absolute paths

Time of First Successful Submission: 2026-01-14 19:29:27

Position thy self

Time of First Successful Submission: 2026-01-14 19:44:01

Position elsewhere

Time of First Successful Submission: 2026-01-14 19:47:40

implicit relative paths, from /

Time of First Successful Submission: 2026-01-14 19:53:24

explicit relative paths, from /

Time of First Successful Submission: 2026-01-14 19:57:22

implicit relative path

Time of First Successful Submission: 2026-01-14 19:59:23

home sweet home

Time of First Successful Submission: 2026-01-14 20:03:30

cat: not the pet, but the command!

Time of First Successful Submission: 2026-01-14 20:06:26

catting absolute paths

Time of First Successful Submission: 2026-01-14 20:09:44

more catting practice

Time of First Successful Submission: 2026-01-14 20:13:11

grepping for a needle in a haystack

Time of First Successful Submission: 2026-01-14 20:15:38

comparing files

Time of First Successful Submission: 2026-01-14 20:20:13

listing files

Time of First Successful Submission: 2026-01-14 20:29:36

touching files

Time of First Successful Submission: 2026-01-14 20:32:34

removing files

Time of First Successful Submission: 2026-01-14 22:15:52

moving files

Time of First Successful Submission: 2026-01-14 22:17:53

copying files

Time of First Successful Submission: 2026-01-14 22:30:56

hidden files

Time of First Successful Submission: 2026-01-14 22:34:26

An Epic Filesystem Quest

Time of First Successful Submission: 2026-01-14 23:13:47

making directories

Time of First Successful Submission: 2026-01-14 23:15:56

finding files

Time of First Successful Submission: 2026-01-14 23:26:18

linking files

Time of First Successful Submission: 2026-01-14 23:30:28

Learning From Documentation

Time of First Successful Submission: 2026-01-15 00:14:42

Learning Complex Usage

Time of First Successful Submission: 2026-01-15 00:17:22

Reading Manuals

Time of First Successful Submission: 2026-01-15 00:34:53

Searching Manuals

Time of First Successful Submission: 2026-01-15 00:39:53

Searching For Manuals

Time of First Successful Submission: 2026-01-15 00:47:47

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 []

Time of First Successful Submission: 2026-01-14 23:38:11

Multiple globs

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Mixing globs

Time of First Successful Submission: 2026-01-14 23:50:16

Exclusionary globbing

Time of First Successful Submission: 2026-01-14 23:52:18

Tab completion

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Multiple options for tab completion

Time of First Successful Submission: 2026-01-15 00:03:13

Tab completion on commands

Time of First Successful Submission: 2026-01-15 00:05:29

Redirecting output

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

Redirecting more output

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

Appending output

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

Redirecting errors

Time of First Successful Submission: 2026-01-15 01:16:09

Redirecting input

Time of First Successful Submission: 2026-01-15 01:17:39

Grepping stored results

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

Grepping live output

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

Grepping errors

Time of First Successful Submission: 2026-01-15 01:32:38

Filtering with grep -v

Time of First Successful Submission: 2026-01-15 01:35:52

Filtering with sed

Time of First Successful Submission: 2026-01-15 01:38:01

Duplicating piped data with tee

Time of First Successful Submission: 2026-01-17 18:01:38

Process substitution for input

Time of First Successful Submission: 2026-01-15 01:57:26

Writing to multiple programs

Time of First Successful Submission: 2026-01-15 02:03:10

Split-piping stderr and stdout

Time of First Successful Submission: 2026-01-15 02:05:37

Named pipes

Time of First Successful Submission: 2026-01-15 02:14:54

Printing Variables

Time of First Successful Submission: 2026-01-15 02:16:03

Setting Variables

Time of First Successful Submission: 2026-01-15 02:17:24

Multi-word Variables

Time of First Successful Submission: 2026-01-15 02:18:38

Exporting Variables

Time of First Successful Submission: 2026-01-15 02:20:01

Printing Exported Variables

Time of First Successful Submission: 2026-01-15 19:46:29

Storing Command Output

Time of First Successful Submission: 2026-01-15 19:52:46

Reading Input

Time of First Successful Submission: 2026-01-15 19:56:54

Reading Files

Time of First Successful Submission: 2026-01-15 19:58:30

Translating characters

Time of First Successful Submission: 2026-01-15 20:04:16

Deleting characters

Time of First Successful Submission: 2026-01-15 20:17:07

Deleting newlines

Time of First Successful Submission: 2026-01-15 22:42:12

Extracting the first lines with head

Time of First Successful Submission: 2026-01-15 22:43:56

Extracting specific sections of text

Time of First Successful Submission: 2026-01-15 22:45:56

Sorting data

Time of First Successful Submission: 2026-01-15 22:50:16

Listing Processes

Time of First Successful Submission: 2026-01-15 22:53:34

Killing Processes

Time of First Successful Submission: 2026-01-15 22:55:52

Interrupting Processes

Time of First Successful Submission: 2026-01-15 22:57:40

Killing Misbehaving Processes

Time of First Successful Submission: 2026-01-17 17:56:23

Suspending Processes

Time of First Successful Submission: 2026-01-15 23:26:13

Resuming Processes

Time of First Successful Submission: 2026-01-15 23:27:53

Backgrounding Processes

Time of First Successful Submission: 2026-01-15 23:45:25

Foregrounding Processes

Time of First Successful Submission: 2026-01-17 17:58:09

Starting Backgrounded Processes

Time of First Successful Submission: 2026-01-17 18:02:41

Process Exit Codes

Time of First Successful Submission: 2026-01-17 18:07:13

Becoming root with su

Time of First Successful Submission: 2026-01-17 18:09:08

Other users with su

Time of First Successful Submission: 2026-01-17 18:10:04

Cracking passwords

Time of First Successful Submission: 2026-01-17 18:14:05

Using sudo

Time of First Successful Submission: 2026-01-17 18:14:57

Changing File Ownership

Time of First Successful Submission: 2026-01-17 18:17:41

Groups and Files

Time of First Successful Submission: 2026-01-17 18:19:27

Fun With Groups Names

Time of First Successful Submission: 2026-01-17 18:21:22

Changing Permissions

Time of First Successful Submission: 2026-01-17 18:22:51

Executable Files

Time of First Successful Submission: 2026-01-17 18:24:16

Permission Tweaking Practice

Time of First Successful Submission: 2026-01-17 18:36:23

Permissions Setting Practice

Time of First Successful Submission: 2026-01-17 18:45:05

The SUID Bit

Time of First Successful Submission: 2026-01-17 18:46:37

Chaining with Semicolons

Time of First Successful Submission: 2026-01-17 18:48:08

Building on Success

Time of First Successful Submission: 2026-01-17 18:49:22

Handling Failure

Time of First Successful Submission: 2026-01-17 18:50:18

Your First Shell Script

Time of First Successful Submission: 2026-01-17 18:51:33

Redirecting Script Output

Time of First Successful Submission: 2026-01-17 18:53:14

Executable Shell Scripts

Time of First Successful Submission: 2026-01-17 18:54:57

Understanding Shebangs

Time of First Successful Submission: 2026-01-17 18:58:25

Scripting with Arguments

Time of First Successful Submission: 2026-01-17 18:56:45

Scripting with Conditionals

Time of First Successful Submission: 2026-01-17 19:02:00

Scripting with Default Cases

Time of First Successful Submission: 2026-01-17 19:03:43

Scripting with Multiple Conditions

Time of First Successful Submission: 2026-01-17 19:07:00

Reading Shell Scripts

Time of First Successful Submission: 2026-01-17 19:09:26

Launching Screen

Time of First Successful Submission: 2026-01-17 19:10:09

Detaching and Attaching

Time of First Successful Submission: 2026-01-17 19:11:29

Finding Sessions

Time of First Successful Submission: 2026-01-17 19:13:59

Switching Windows

Time of First Successful Submission: 2026-01-17 19:15:45

Detaching and Attaching (tmux)

Time of First Successful Submission: 2026-01-17 19:20:10

Switching Windows (tmux)

Time of First Successful Submission: 2026-01-17 19:21:03

The PATH Variable

Time of First Successful Submission: 2026-01-17 19:22:09

Setting PATH

Time of First Successful Submission: 2026-01-17 19:23:50

Finding Commands

Time of First Successful Submission: 2026-01-17 19:27:08

Adding Commands

Time of First Successful Submission: 2026-01-17 19:29:00

Hijacking Commands

Time of First Successful Submission: 2026-01-17 19:30:40

Bashrc Backdoor

Time of First Successful Submission: 2026-01-17 19:34:34

Sniffing Input

Time of First Successful Submission: 2026-01-17 20:18:16

Overshared Directories

Time of First Successful Submission: 2026-01-17 20:21:18

Tricky Linking

Time of First Successful Submission: 2026-01-17 19:49:45

Sniffing Process Arguments

Time of First Successful Submission: 2026-01-17 19:54:45

Snooping on Configurations

Time of First Successful Submission: 2026-01-17 19:56:11

The Fork Bomb

Time of First Successful Submission: 2026-01-17 20:00:08

Disk-Space Doomsday

Time of First Successful Submission: 2026-01-17 20:02:07

rm -rf /

Time of First Successful Submission: 2026-01-17 20:09:46

Life after rm -rf /

Time of First Successful Submission: 2026-01-17 20:12:45

Finding meaning after rm -rf /

Time of First Successful Submission: 2026-01-17 20:16:12

Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-20 22:20:09

Your First Syscall

Time of First Successful Submission: 2026-02-20 22:21:54

Exit Codes

Time of First Successful Submission: 2026-02-20 22:23:42

Building Executables

Time of First Successful Submission: 2026-02-20 22:26:37

Moving Between Registers

Time of First Successful Submission: 2026-02-20 22:28:28

Loading From Memory

Time of First Successful Submission: 2026-02-20 22:29:41

More Loading Practice

Time of First Successful Submission: 2026-02-20 22:37:03

Dereferencing Pointers

Time of First Successful Submission: 2026-02-20 22:39:44

Dereferencing Yourself

Time of First Successful Submission: 2026-02-20 22:40:56

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-20 22:42:49

Stored Addresses

Time of First Successful Submission: 2026-02-20 22:44:39

Double Dereference

Time of First Successful Submission: 2026-02-20 22:51:15

The Stack

Time of First Successful Submission: 2026-02-22 18:27:30

Stack Offsets

Time of First Successful Submission: 2026-02-22 18:28:29

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-22 18:29:21

Popping From the Stack

Time of First Successful Submission: 2026-02-22 18:30:25

Disassembling Programs

Time of First Successful Submission: 2026-02-22 18:32:59

Tracing Syscalls

Time of First Successful Submission: 2026-02-22 18:34:09

Starting GDB

Time of First Successful Submission: 2026-02-22 18:35:24

Quitting GDB

Time of First Successful Submission: 2026-02-22 18:36:11

Starting Programs in GDB

Time of First Successful Submission: 2026-02-22 18:38:37

Disassembling in GDB

Time of First Successful Submission: 2026-02-22 18:40:26

Stepping Through Instructions

Time of First Successful Submission: 2026-02-22 18:43:18

Reading Register Values

Time of First Successful Submission: 2026-02-22 18:44:58

Popping Stack Values

Time of First Successful Submission: 2026-02-22 18:46:17

Examining Memory

Time of First Successful Submission: 2026-02-22 18:47:41

Examining Stack Pointers

Time of First Successful Submission: 2026-02-22 18:58:35

Cooperative Debugging

Time of First Successful Submission: 2026-02-22 19:00:06

Writing Output

Time of First Successful Submission: 2026-02-22 19:03:00

Chaining Syscalls

Time of First Successful Submission: 2026-02-22 19:04:17

Writing Strings

Time of First Successful Submission: 2026-02-22 19:05:46

Reading Data

Time of First Successful Submission: 2026-02-22 19:08:21

Opening Files

Time of First Successful Submission: 2026-02-22 19:09:49

Hardcoding the Filename

Time of First Successful Submission: 2026-02-22 19:11:27

Comparing Values

Time of First Successful Submission: 2026-02-22 19:12:47

Comparing Characters

Time of First Successful Submission: 2026-02-22 19:14:45

Conditional Control Flow

Time of First Successful Submission: 2026-02-22 19:16:43

Comparing Strings

Time of First Successful Submission: 2026-02-22 19:18:11

Reverse the Password

Time of First Successful Submission: 2026-02-22 19:22:28

Conditionals Without Conditionals

Time of First Successful Submission: 2026-02-22 19:29:26

Looping

Time of First Successful Submission: 2026-03-02 02:54:19

Reverse the Calculation

Time of First Successful Submission: 2026-02-22 19:37:21

Reverse the Reverse

Time of First Successful Submission: 2026-02-22 19:39:01

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-02-22 19:39:55

Loops on Data

Time of First Successful Submission: 2026-02-22 19:42:40

set-register

Time of First Successful Submission: 2026-02-22 19:43:55

set-multiple-registers

Time of First Successful Submission: 2026-02-22 19:44:59

add-to-register

Time of First Successful Submission: 2026-02-22 19:46:11

linear-equation-registers

Time of First Successful Submission: 2026-02-27 22:17:21

integer-division

Time of First Successful Submission: 2026-02-27 22:18:36

modulo-operation

Time of First Successful Submission: 2026-02-27 22:19:57

set-upper-byte

Time of First Successful Submission: 2026-02-27 22:40:14

efficient-modulo

Time of First Successful Submission: 2026-02-27 22:41:10

byte-extraction

Time of First Successful Submission: 2026-02-27 22:42:58

bitwise-and

Time of First Successful Submission: 2026-02-27 22:43:54

check-even

Time of First Successful Submission: 2026-02-27 22:44:50

memory-read

Time of First Successful Submission: 2026-02-27 22:45:43

memory-write

Time of First Successful Submission: 2026-02-27 22:46:31

memory-increment

Time of First Successful Submission: 2026-02-27 22:47:33

byte-access

Time of First Successful Submission: 2026-02-27 22:48:33

memory-size-access

Time of First Successful Submission: 2026-02-27 22:49:34

little-endian-write

Time of First Successful Submission: 2026-02-27 22:50:28

memory-sum

Time of First Successful Submission: 2026-02-27 22:51:21

stack-subtraction

Time of First Successful Submission: 2026-02-27 22:52:35

swap-stack-values

Time of First Successful Submission: 2026-02-27 22:53:35

average-stack-values

Time of First Successful Submission: 2026-02-27 22:54:37

absolute-jump

Time of First Successful Submission: 2026-02-27 22:55:51

relative-jump

Time of First Successful Submission: 2026-02-27 22:57:18

jump-trampoline

Time of First Successful Submission: 2026-02-27 22:58:30

conditional-jump

Time of First Successful Submission: 2026-02-27 23:01:58

indirect-jump

Time of First Successful Submission: 2026-02-27 23:03:09

average-loop

Time of First Successful Submission: 2026-02-27 23:04:06

count-non-zero

Time of First Successful Submission: 2026-02-27 23:05:18

string-lower

Time of First Successful Submission: 2026-02-27 23:10:53

most-common-byte

Time of First Successful Submission: 2026-02-27 23:17:47

Exit

Time of First Successful Submission: 2026-02-27 23:44:59

Socket

Time of First Successful Submission: 2026-02-27 23:46:18

Bind

Time of First Successful Submission: 2026-02-27 23:48:46

Listen

Time of First Successful Submission: 2026-02-27 23:50:02

Accept

Time of First Successful Submission: 2026-02-27 23:51:01

Static Response

Time of First Successful Submission: 2026-02-27 23:53:52

Dynamic Response

Time of First Successful Submission: 2026-02-27 23:58:30

Iterative GET Server

Time of First Successful Submission: 2026-02-28 00:00:44

Concurrent GET Server

Time of First Successful Submission: 2026-02-28 00:04:58

Concurrent POST Server

Time of First Successful Submission: 2026-02-28 00:09:02

Web Server

Time of First Successful Submission: 2026-02-28 00:16:17

Debugging Programs

Time of First Successful Submission: 2026-02-27 23:24:08

Inspecting Registers

Time of First Successful Submission: 2026-02-27 23:28:48

Examining Memory

Time of First Successful Submission: 2026-03-02 02:28:33

Setting Breakpoints

Time of First Successful Submission: 2026-05-05 03:41:57

GDB Scripting

Time of First Successful Submission: 2026-05-05 03:56:59

Modifying Data

Time of First Successful Submission: 2026-05-05 04:00:45

Modifying Execution

Time of First Successful Submission: 2026-05-05 04:03:44

Broken Functions

Time of First Successful Submission: 2026-05-05 04:12:27

Playing With Programs

65 / 116 4345 / 23700

What's the password?

Time of First Successful Submission: 2026-01-20 23:33:38

... and again!

Time of First Successful Submission: 2026-01-20 23:36:15

Newline Troubles

Time of First Successful Submission: 2026-01-23 19:50:31

Reasoning about files

Time of First Successful Submission: 2026-02-01 19:21:58

Specifying Filenames

Time of First Successful Submission: 2026-02-01 19:23:30

Binary and Hex Encoding

Time of First Successful Submission: 2026-01-24 20:21:02

More Hex

Time of First Successful Submission: 2026-01-24 20:23:51

Decoding Hex

Time of First Successful Submission: 2026-01-24 20:31:23

Decoding Practice

Time of First Successful Submission: 2026-01-24 20:33:38

Encoding Practice

Time of First Successful Submission: 2026-01-24 20:36:05

Hex-encoding ASCII

Time of First Successful Submission: 2026-01-24 20:37:51

Nested Encoding

Time of First Successful Submission: 2026-02-01 19:24:50

Hex-encoding UTF-8

Time of First Successful Submission: 2026-01-24 20:47:19

UTF Mixups

Time of First Successful Submission: 2026-01-24 20:49:39

Modifying Encoded Data

Time of First Successful Submission: 2026-01-24 20:51:30

Decoding Base64

Time of First Successful Submission: 2026-01-24 20:53:54

Encoding Base64

Time of First Successful Submission: 2026-01-24 20:56:31

Dealing with Obfuscation

Time of First Successful Submission: 2026-01-24 21:04:49

Dealing with Obfuscation 2

Time of First Successful Submission: 2026-02-01 19:26:54

Your First HTTP Request

Time of First Successful Submission: 2026-01-24 19:20:47

Reading Flask

Time of First Successful Submission: 2026-01-24 19:28:18

Commented Data

Time of First Successful Submission: 2026-01-24 19:33:25

HTTP Metadata

Time of First Successful Submission: 2026-01-24 19:46:16

HTTP (netcat)

Time of First Successful Submission: 2026-01-24 19:51:07

HTTP Paths (netcat)

Time of First Successful Submission: 2026-01-24 19:54:51

HTTP (curl)

Time of First Successful Submission: 2026-01-24 19:57:24

HTTP (python)

Time of First Successful Submission: 2026-01-24 20:01:45

HTTP Host Header (python)

Time of First Successful Submission: 2026-01-24 20:13:37

HTTP Host Header (curl)

Time of First Successful Submission: 2026-01-24 20:16:21

HTTP Host Header (netcat)

Time of First Successful Submission: 2026-01-24 21:12:56

URL Encoding (netcat)

Time of First Successful Submission: 2026-01-24 21:14:45

HTTP GET Parameters

Time of First Successful Submission: 2026-01-24 21:17:14

Multiple HTTP Parameters (netcat)

Time of First Successful Submission: 2026-01-24 21:19:11

Multiple HTTP Parameters (curl)

Time of First Successful Submission: 2026-01-31 18:40:31

HTTP Forms

Time of First Successful Submission: 2026-01-31 18:43:54

HTTP Forms (curl)

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

HTTP Forms (netcat)

Time of First Successful Submission: 2026-01-31 18:51:00

HTTP Forms (python)

Time of First Successful Submission: 2026-01-31 18:54:52

HTTP Forms Without Forms

Time of First Successful Submission: 2026-01-31 18:57:53

Multiple Form Fields (curl)

Time of First Successful Submission: 2026-01-31 19:00:41

Multiple Form Fields (netcat)

Time of First Successful Submission: 2026-01-31 19:07:05

HTTP Redirects (netcat)

Time of First Successful Submission: 2026-01-31 19:10:24

HTTP Redirects (curl)

Time of First Successful Submission: 2026-01-31 19:12:36

HTTP Redirects (python)

Time of First Successful Submission: 2026-01-31 23:58:57

HTTP Cookies (curl)

Time of First Successful Submission: 2026-02-01 00:00:18

HTTP Cookies (netcat)

Time of First Successful Submission: 2026-02-01 00:03:13

HTTP Cookies (python)

Time of First Successful Submission: 2026-02-01 00:04:37

Server State (python)

Time of First Successful Submission: 2026-02-01 00:05:38

Listening Web

Time of First Successful Submission: 2026-02-01 00:09:33

Speaking Redirects

Time of First Successful Submission: 2026-02-01 19:02:27

JavaScript Redirects

Time of First Successful Submission: 2026-02-01 19:04:57

Including JavaScript

Time of First Successful Submission: 2026-02-01 19:08:39

HTTP (javascript)

Time of First Successful Submission: 2026-02-01 19:11:00

HTTP Get Parameters (javascript)

Time of First Successful Submission: 2026-02-01 19:15:54

HTTP Forms (javascript)

Time of First Successful Submission: 2026-02-01 19:18:43

SQL Queries

Time of First Successful Submission: 2026-01-23 21:49:11

Filtering SQL

Time of First Successful Submission: 2026-01-23 21:56:16

Choosing Columns

Time of First Successful Submission: 2026-01-23 21:59:03

Exclusionary Filtering

Time of First Successful Submission: 2026-02-01 18:25:07

Filtering Strings

Time of First Successful Submission: 2026-02-01 18:28:39

Filtering on Expressions

Time of First Successful Submission: 2026-02-01 18:30:08

SELECTing Expressions

Time of First Successful Submission: 2026-02-01 18:41:38

Composite Conditions

Time of First Successful Submission: 2026-02-01 18:43:40

Reaching Your LIMITs

Time of First Successful Submission: 2026-02-01 18:44:57

Querying Metadata

Time of First Successful Submission: 2026-02-01 18:52:08

GCA CTF

6 / 104 29909 / 45252

Using the Terminal

Time of First Successful Submission: 2026-01-14 18:53:19

Using the VSCode Workspace

Time of First Successful Submission: 2026-01-14 18:55:41

Using the GUI Desktop

Time of First Successful Submission: 2026-01-14 18:58:15

Pasting into the Desktop

Time of First Successful Submission: 2026-01-14 19:01:21

Restarting Challenges

Time of First Successful Submission: 2026-01-14 19:17:34

Getting Help

Time of First Successful Submission: 2026-01-14 19:10:53