Dashboard
Scoreboard
Activity
About
Login
Join
Internet Explorer is not supported. Please use an alternative browser.
Error during challenge fetch. Please reload or use an alternative browser.
b4d
30th
Place
10,000
Points
59
Solves
Beginner Tutorial
Cryptography
Miscellaneous
Networking
Pwnable
Reversing
Web
Web315
Helicopter Administrators
solved 191 days ago
CRYPTO275
Nonexistent functionality
solved 191 days ago
REV230
The Flag Safe
solved 202 days ago
CRYPTO195
Substitution-flag-permutation network
solved 612 days ago
REV180
Encrypted USB drive
solved 975 days ago
Web275
The Flag API key
solved 983 days ago
Web220
The Twig Injector
solved 983 days ago
MISC200
Completely Turing
solved 997 days ago
REV190
Angr-y Binary
solved 1507 days ago
Web205
Flag Authoriser
solved 1508 days ago
NET205
The Web Shell
solved 1513 days ago
BEGINNER15
Discuss and learn
solved 1768 days ago
CRYPTO190
Suspicious Caesar Cipher
solved 1852 days ago
CRYPTO230
Predictable vectors
solved 1865 days ago
CRYPTO270
The flag HMAC
solved 1866 days ago
MISC210
Constant Backup Policies
solved 1885 days ago
REV195
The Flag Bootloader
solved 1959 days ago
Web220
ACID flag bank
solved 1960 days ago
BEGINNER15
Watch and Learn
solved 1997 days ago
NET215
00ps, my WiFi disconnected
solved 2059 days ago
Web285
Cereal Logger
solved 2059 days ago
Web230
Slippery Upload
solved 2080 days ago
MISC135
Try and catch
solved 2085 days ago
REV205
Flag Keygen
solved 2089 days ago
Pwn200
A non-executable stack
solved 2092 days ago
CRYPTO215
Hidden flag bytes
solved 2096 days ago
Web255
Administrative ORM
solved 2096 days ago
Web310
Mechanical Turk
solved 2101 days ago
Pwn150
Heaped notes
solved 2103 days ago
BEGINNER50
Tips and Tricks
solved 2106 days ago
BEGINNER15
New challenge releases
solved 2106 days ago
BEGINNER10
Socket challenges
solved 2106 days ago
BEGINNER10
Web challenges
solved 2106 days ago
BEGINNER10
Downloadable challenges
solved 2106 days ago
BEGINNER5
The flag format
solved 2106 days ago
Pwn180
An executable stack
solved 2109 days ago
REV135
The encrypted password
solved 2111 days ago
NET220
Custom Protocol
solved 2111 days ago
NET200
Multiplication tables
solved 2112 days ago
NET185
Not my modulus
solved 2112 days ago
CRYPTO205
An exclusive key
solved 2118 days ago
Pwn140
Hidden flag function parameters
solved 2125 days ago
Web155
Trusted Client
solved 2125 days ago
CRYPTO190
The impossible user
solved 2126 days ago
MISC160
The encrypted flag
solved 2126 days ago
REV200
The Secret Lock
solved 2132 days ago
Pwn145
Confused environment read
solved 2149 days ago
Pwn145
Hidden flag function
solved 2149 days ago
Web220
Forgotten file pointer
solved 2151 days ago
MISC140
Hidden Painting
solved 2152 days ago
Web195
Compare the pair
solved 2152 days ago
Web155
Secured session
solved 2152 days ago
CRYPTO190
My Magic Bytes
solved 2161 days ago
NET160
Error reporting protocol
solved 2161 days ago
MISC125
The flag lottery
solved 2161 days ago
REV95
The more the merrier
solved 2161 days ago
MISC135
Sensitive server memory
solved 2163 days ago
MISC100
An impossible number
solved 2163 days ago
MISC90
The text editor jail
solved 2163 days ago
Submit
Forgot your password?
Submit
By registering, you agree to our privacy policy
Submit