Offical URL: https://advent2018.overthewire.org/

Ho Ho Ho, it's that time of year where many people count down the days to Christmas.

Traditionally, an advent calendar is used which yields one piece of chocolate every day,
but here at OverTheWire, we feel that we can do better than that.
Instead of chocolates, we offer a fresh CTF challenge every day of December until Christmas!

Format: remote, team-based, jeopardy.
Difficulty: intermediate (a couple hours solving time per challenge on average)
Categories: web, re, pwn, crypto, misc
Contact (IRC): #advent @ irc.overthewire.org
Contact (Twitter): @OverTheWireCTF

More information as the event comes closer at https://advent2018.overthewire.org

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CTF events

NameWeight
OverTheWire Advent Bonanza 20210
OverTheWire Advent Bonanza 201923.06
OverTheWire Advent Bonanza 201823.06
Related tags: web pwn xss x86 php crypto stego rop forensics base64 perl python net pcap xor fun rsa z3 prime bruteforce javascript aes arm java vm exploitation node.js misc pwnable re sql exploit ppc steganography security programming metasploit c c++ reverse engineering penetration testing math nodejs obfuscated code-injection coding networking ruby mongodb http engineering malware shell bash algorithms windows unix network pentesting guessing social engineering html network hacking game linux recon wireshark googling analysis lfi morse socket assembly code breaking learning slacking kernel hash radare2 git pwning music shellcode overflow androidsecurity cellular ciphertexts application security algorithm os x clojure qr github jit golang midi substitution data structure usb struggle passcracking angr patching encoding length rc4 hexeditor qrcode complaining ecb heap powerpc invert modular-root mathematics homeland maze srp fault cybersecurity reverse hash-length-extension cryptography reversing rev easy kali burpsuite ld_preload stack_pivot binary race condition rot13 command_injection paillier path-traversal coppersmith sudoku padding partial-recovery compare cryptography-rsa osint ssti oracle-padding keyboard binaryexploitation sca msb reflection bitflipping pinhole bitshift constraint side-channel formatstringexploiter format-string emulation sdr bfs sha256 octal signature header syscall react webpack amp polyglot keylogger binary-exploitation dotnet restricted-bash easteregg linear_algebra privesc rowhammer aztec cowsay quine gnuradio tremaux keygen canary crytpography shift gamecube