zer0bav

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Intro to Cybersecurity

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Path Traversal 1

Time of First Successful Submission: 2025-12-15 12:26:08

Path Traversal 2

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

CMDi 1

Time of First Successful Submission: 2026-01-19 01:56:29

CMDi 2

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

CMDi 3

Time of First Successful Submission: 2026-01-19 12:16:44

CMDi 4

Time of First Successful Submission: 2026-01-19 12:22:27

Authentication Bypass 1

Time of First Successful Submission: 2026-01-19 20:09:59

Authentication Bypass 2

Time of First Successful Submission: 2026-01-19 20:15:59

XSS 1

Time of First Successful Submission: 2026-01-19 20:22:45

XSS 2

Time of First Successful Submission: 2026-01-19 20:24:36

XSS 3

Time of First Successful Submission: 2026-01-19 20:29:42

XSS 4

Time of First Successful Submission: 2026-01-19 20:42:16

XSS 5

Time of First Successful Submission: 2026-01-19 20:52:14

XSS 6

Time of First Successful Submission: 2026-01-19 21:00:29

CSRF 1

Time of First Successful Submission: 2026-02-20 22:41:44

level1

Time of First Successful Submission: 2026-02-20 23:45:20

level2

Time of First Successful Submission: 2026-02-20 23:45:55

level3

Time of First Successful Submission: 2026-02-20 23:47:53

level4

Time of First Successful Submission: 2026-02-20 23:50:16

level5

Time of First Successful Submission: 2026-02-20 23:56:53

level6

Time of First Successful Submission: 2026-02-20 23:58:50

File Formats: Magic Numbers (Python)

Time of First Successful Submission: 2026-01-19 12:34:10

File Formats: Magic Numbers (C)

Time of First Successful Submission: 2026-02-05 19:55:19

File Formats: Magic Numbers (x86)

Time of First Successful Submission: 2026-02-05 20:00:45

Reading Endianness (Python)

Time of First Successful Submission: 2026-02-05 20:09:21

Reading Endianness (C)

Time of First Successful Submission: 2026-02-05 20:11:40

Reading Endianness (x86)

Time of First Successful Submission: 2026-02-05 20:13:27

Version Information (Python)

Time of First Successful Submission: 2026-02-20 07:47:16

Version Information (C)

Time of First Successful Submission: 2026-02-20 08:04:44

Version Information (x86)

Time of First Successful Submission: 2026-02-20 08:20:19

Metadata and Data (Python)

Time of First Successful Submission: 2026-02-20 12:48:14

Metadata and Data (C)

Time of First Successful Submission: 2026-02-20 13:15:10

Metadata and Data (x86)

Time of First Successful Submission: 2026-02-20 13:28:15

Input Restrictions (Python)

Time of First Successful Submission: 2026-02-20 14:16:47

Input Restrictions (C)

Time of First Successful Submission: 2026-02-20 19:50:10

Input Restrictions (x86)

Time of First Successful Submission: 2026-02-20 20:07:46

Behold the cIMG! (Python)

Time of First Successful Submission: 2026-02-20 20:15:40

Behold the cIMG! (C)

Time of First Successful Submission: 2026-02-23 10:30:47

Your First Overflow (easy)

Time of First Successful Submission: 2026-04-12 18:23:27

Your First Overflow (hard)

Time of First Successful Submission: 2026-04-12 18:24:11

Program Security

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Terrible Token (Easy)

Time of First Successful Submission: 2026-02-20 21:11:25

Terrible Token (Hard)

Time of First Successful Submission: 2026-02-20 21:12:59

Tangled Ticket (Easy)

Time of First Successful Submission: 2026-02-20 21:17:20

Tangled Ticket (Hard)

Time of First Successful Submission: 2026-02-20 21:31:23

Bit Bender

Time of First Successful Submission: 2026-02-20 21:52:41

Substitution Sorcery

Time of First Successful Submission: 2026-02-20 22:21:56

Start Here

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Computing 101

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Your First Register

Time of First Successful Submission: 2026-02-28 15:37:58

Your First Syscall

Time of First Successful Submission: 2026-02-28 15:42:22

Exit Codes

Time of First Successful Submission: 2026-02-28 15:46:02

Building Executables

Time of First Successful Submission: 2026-02-28 16:34:43

Moving Between Registers

Time of First Successful Submission: 2026-02-28 16:44:03

Loading From Memory

Time of First Successful Submission: 2026-02-28 16:49:49

More Loading Practice

Time of First Successful Submission: 2026-02-28 16:58:31

Dereferencing Pointers

Time of First Successful Submission: 2026-02-28 17:04:40

Dereferencing Yourself

Time of First Successful Submission: 2026-02-28 17:14:01

Dereferencing with Offsets

Time of First Successful Submission: 2026-02-28 17:19:17

Stored Addresses

Time of First Successful Submission: 2026-02-28 17:26:07

Double Dereference

Time of First Successful Submission: 2026-02-28 17:34:51

The Stack

Time of First Successful Submission: 2026-02-28 17:52:53

Stack Offsets

Time of First Successful Submission: 2026-02-28 17:54:34

Program Arguments on the Stack

Time of First Successful Submission: 2026-02-28 18:03:11

Popping From the Stack

Time of First Successful Submission: 2026-02-28 21:23:19

Disassembling Programs

Time of First Successful Submission: 2026-02-28 21:26:01

Tracing Syscalls

Time of First Successful Submission: 2026-02-28 21:33:24

Starting GDB

Time of First Successful Submission: 2026-02-28 21:35:18

Quitting GDB

Time of First Successful Submission: 2026-02-28 21:36:01

Starting Programs in GDB

Time of First Successful Submission: 2026-02-28 21:38:32

Disassembling in GDB

Time of First Successful Submission: 2026-02-28 21:43:53

Stepping Through Instructions

Time of First Successful Submission: 2026-02-28 21:52:45

Reading Register Values

Time of First Successful Submission: 2026-02-28 21:54:46

Popping Stack Values

Time of First Successful Submission: 2026-02-28 21:56:33

Examining Memory

Time of First Successful Submission: 2026-02-28 22:01:12

Examining Stack Pointers

Time of First Successful Submission: 2026-02-28 22:02:56

Cooperative Debugging

Time of First Successful Submission: 2026-02-28 22:12:38

Writing Output

Time of First Successful Submission: 2026-03-01 12:04:30

Chaining Syscalls

Time of First Successful Submission: 2026-03-01 12:14:25

Writing Strings

Time of First Successful Submission: 2026-03-01 12:19:57

Reading Data

Time of First Successful Submission: 2026-03-01 19:36:52

Opening Files

Time of First Successful Submission: 2026-03-01 19:50:23

Hardcoding the Filename

Time of First Successful Submission: 2026-03-01 21:03:16

Comparing Values

Time of First Successful Submission: 2026-03-01 21:22:30

Comparing Characters

Time of First Successful Submission: 2026-03-01 21:27:11

Conditional Control Flow

Time of First Successful Submission: 2026-03-01 21:34:40

Comparing Strings

Time of First Successful Submission: 2026-03-01 21:38:02

Reverse the Password

Time of First Successful Submission: 2026-03-01 21:43:12

Conditionals Without Conditionals

Time of First Successful Submission: 2026-03-01 22:04:47

Looping

Time of First Successful Submission: 2026-03-01 22:13:16

Reverse the Calculation

Time of First Successful Submission: 2026-03-02 01:44:02

Reverse the Reverse

Time of First Successful Submission: 2026-03-02 01:45:20

Dealing with Bitwise Operations

Time of First Successful Submission: 2026-03-02 01:46:35

Loops on Data

Time of First Successful Submission: 2026-03-02 01:47:19

set-register

Time of First Successful Submission: 2026-03-02 01:51:21

set-multiple-registers

Time of First Successful Submission: 2026-03-02 01:55:30

add-to-register

Time of First Successful Submission: 2026-03-02 02:03:39

linear-equation-registers

Time of First Successful Submission: 2026-03-02 02:24:23

integer-division

Time of First Successful Submission: 2026-03-02 03:22:08

modulo-operation

Time of First Successful Submission: 2026-03-02 03:29:36

set-upper-byte

Time of First Successful Submission: 2026-03-02 03:34:14

efficient-modulo

Time of First Successful Submission: 2026-03-02 03:43:34

byte-extraction

Time of First Successful Submission: 2026-03-02 03:54:48

bitwise-and

Time of First Successful Submission: 2026-03-02 04:05:32

check-even

Time of First Successful Submission: 2026-03-04 00:40:50

memory-read

Time of First Successful Submission: 2026-03-04 00:52:32

memory-write

Time of First Successful Submission: 2026-03-04 00:53:58

memory-increment

Time of First Successful Submission: 2026-03-04 01:05:36

byte-access

Time of First Successful Submission: 2026-03-05 06:21:35

memory-size-access

Time of First Successful Submission: 2026-03-05 06:30:55

little-endian-write

Time of First Successful Submission: 2026-03-05 06:43:26

memory-sum

Time of First Successful Submission: 2026-03-06 02:14:34

stack-subtraction

Time of First Successful Submission: 2026-03-06 02:20:55

swap-stack-values

Time of First Successful Submission: 2026-03-06 02:27:54

average-stack-values

Time of First Successful Submission: 2026-03-10 21:05:26

absolute-jump

Time of First Successful Submission: 2026-03-10 21:20:16

relative-jump

Time of First Successful Submission: 2026-03-10 21:32:00

jump-trampoline

Time of First Successful Submission: 2026-03-10 21:35:53

conditional-jump

Time of First Successful Submission: 2026-03-10 22:41:25

indirect-jump

Time of First Successful Submission: 2026-03-10 22:55:25

average-loop

Time of First Successful Submission: 2026-03-11 01:00:17

count-non-zero

Time of First Successful Submission: 2026-03-11 01:09:10

string-lower

Time of First Successful Submission: 2026-03-11 01:13:58

most-common-byte

Time of First Successful Submission: 2026-03-11 01:26:28

Exit

Time of First Successful Submission: 2026-03-11 08:44:32

Socket

Time of First Successful Submission: 2026-03-11 08:51:40

Bind

Time of First Successful Submission: 2026-03-11 09:12:25

Listen

Time of First Successful Submission: 2026-03-11 09:18:20

Accept

Time of First Successful Submission: 2026-03-11 09:24:37

Static Response

Time of First Successful Submission: 2026-03-11 09:54:04

Dynamic Response

Time of First Successful Submission: 2026-04-07 14:46:13

Iterative GET Server

Time of First Successful Submission: 2026-03-11 19:52:42

Concurrent GET Server

Time of First Successful Submission: 2026-03-11 19:56:26

Concurrent POST Server

Time of First Successful Submission: 2026-04-07 15:06:29

Web Server

Time of First Successful Submission: 2026-04-07 15:19:57

Debugging Programs

Time of First Successful Submission: 2026-04-07 15:35:58

Inspecting Registers

Time of First Successful Submission: 2026-04-07 15:42:03

Examining Memory

Time of First Successful Submission: 2026-04-07 16:04:21

Setting Breakpoints

Time of First Successful Submission: 2026-04-11 08:14:54

GDB Scripting

Time of First Successful Submission: 2026-04-11 14:16:08

Modifying Data

Time of First Successful Submission: 2026-04-12 09:30:01

Modifying Execution

Time of First Successful Submission: 2026-04-12 09:38:58

Broken Functions

Time of First Successful Submission: 2026-04-12 09:46:38

GCA CTF

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Connecting over SSH

Time of First Successful Submission: 2025-12-15 12:15:47