CTF Challenges by Category
All Skills
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c-programming × 33
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php × 33
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php-programming × 25
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control-flow-structures × 21
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loops × 19
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object-oriented-programming × 17
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variables × 17
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control-flow × 15
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data-types × 14
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sql × 12
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css × 12
⭐
linux × 12
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html × 10
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inheritance × 9
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syntax × 7
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for-loop × 7
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control-structures × 7
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oop × 7
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arrays × 7
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switch-case × 7
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operators × 6
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encapsulation × 6
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security × 6
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javascript × 6
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web-development × 5
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sql-programming × 5
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database × 5
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decision-making × 5
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switch × 5
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pointers × 5
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iot × 4
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constants × 4
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generic-programming × 4
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constructor × 4
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web-design × 4
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functions × 4
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html-css × 4
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ui-ux × 4
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css-flexbox × 4
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if-statement × 4
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linked-list × 4
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switch-statement × 4
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error-handling × 3
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mqtt × 3
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design-tools × 3
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loop × 3
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class × 3
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interface × 3
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polymorphism × 3
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comparison × 3
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if-else × 3
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programming × 3
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full-text-search × 3
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protocols × 3
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conditional-statements × 3
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cli × 3
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do-while × 3
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html-elements × 3
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while-loop × 3
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authentication × 3
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basics × 3
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sql-injection × 3
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control-systems × 3
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dynamic-data-structures × 3
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block-scope × 2
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challenges × 2
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array × 2
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http-methods × 2
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cyber-security × 2
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iot-protocols × 2
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object-oriented × 2
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memory-allocation × 2
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directory-commands × 2
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nan × 2
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basic × 2
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python × 2
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data-security × 2
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database-design × 2
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ui-ux-design × 2
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design-principles × 2
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ux-design × 2
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caching × 2
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css-properties × 2
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objects × 2
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coap × 2
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abstract-class × 2
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prototyping × 2
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wireframing × 2
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file-handling × 2
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optimization × 2
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break × 2
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bitwise-operations × 2
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user-testing × 2
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responsive-design × 2
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file-directory-commands × 2
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control-theory × 2
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databases × 2
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flexbox × 2
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data-structures × 2
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string × 2
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parameterized-query × 2
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continue-statement × 2
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file-commands × 2
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database-management × 2
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current-directory × 2
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iteration × 2
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java × 2
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abstract-classes × 2
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keywords × 2
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web-security × 2
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pid-control × 2
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networking × 2
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alternative-syntax × 2
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templates × 2
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declaration × 2
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data-migration × 2
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comments × 2
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backend-development × 2
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logic × 2
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positioning × 2
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alignment × 2
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ternary-operator × 2
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dml × 2
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state-space-representation × 2
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control-algorithms × 2
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restful-api × 2
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break-statement × 2
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conditionals × 2
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beginner × 2
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firmware-updates × 2
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classes × 2
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http × 2
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logging × 2
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for-loops × 2
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malloc × 2
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aggregate-functions × 2
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forms × 2
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object-creation × 2
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robust-control × 2