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    UMDCTF

    6 editions·158 challenges·2020–2026

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    202620242023202220212020
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    2026

    28 challengesCTFtime

    crypto2

    no_brainrot_allowed
    weave

    misc8

    dualflow
    exponential
    flow
    french_baguette
    insider_info
    offknock
    quant
    rush_hour

    osint4

    hades_group
    road_1
    road_2
    road_3

    pwn5

    bag_of_words
    bookmaker
    ipv8
    velvet_table
    vkexchange

    rev6

    gnalekcip
    nuclear_codes
    oracle
    rainbet
    roulette
    the_akari

    web3

    choppediver_oa
    security_breach
    security_breach_ruin

    2024

    36 challengesCTFtime

    crypto6

    giedi_composite
    haes
    haes_2
    Key_Recovery
    padding_oracle
    Triple_DES

    misc9

    attack_of_the_worm
    Echoes_of_Arrakis
    i_love_shapes_and_colors
    image_abomination
    llm_compression
    mentat_tokenizer
    possible_futures
    Spice_Harvest_Data_Recovery
    the_worm_strikes_back

    osint6

    bro_thinks_hes_hans_zimmer
    literally_arrakis_I
    literally_arrakis_II
    literally_arrakis_III
    lost_on_caladan
    vlad_pad

    pwn7

    chisel
    mentat_question
    ornithopter
    ready_aim_fire
    the_spice
    the_voice
    worm_eat_worm

    rev7

    cmsc430
    Flavors
    reality
    realitys_revenge
    travel_the_dunes..._with_OCaml
    Typecheck
    undecidable

    web1

    HTTP_Fanatics

    2023

    33 challengesCTFtime

    crypto12

    AdiShamir
    AES-TR
    Bulbeuler
    Caterpie
    CBC-MAC1
    CBC-MAC2
    Eeveelutions
    Ekans
    HiddenMessage
    NoisyBits
    pokecomms
    ReduceThyself

    hw4

    beep-boop
    Bleep_1
    Clutter
    EP_815

    ml2

    Elgyems_Password
    french-baguette

    mobile4

    flamecamp
    JNIdorino
    pokeball_escape
    whos_that_pokemon

    pwn4

    Bills_Blazingly_Fast_Memory_Safe_Pocket_Monster_Storage_System
    pokemon_game
    Splash
    You_Want_Me_To_Run_What

    rev7

    but_like_when
    cleffas_surprise
    counter-strike_global_offensive_aimbot
    introduction_to_c
    playtime
    welcome_to_python
    well-connected

    2022

    20 challengesCTFtime

    crypto6

    DFA_AES
    DFASpeck1
    DFASpeck2
    MTP
    Squarsa
    VigenereXOR

    hw2

    BongoCat
    Minetest2-MUX

    pwn4

    ClassicAct
    Fork_Knife
    TheShowMustGoOn
    Tracestory

    rev6

    BMP_X_LoveLetter
    DragonPit
    Go_away
    pitrojan
    tiny
    Trainfuck

    web2

    ASimpleCalculator
    CustomerSupport

    2021

    36 challengesCTFtime

    crypto11

    Art_Class
    Card_Obsession
    Cards_Galore
    Celebration
    Computer_Troubles
    Freddie_Files
    Office_Secrets
    Subway
    To_Be_Xor_Not_To_Be
    Travel_in_Layers
    Whose_Base_Is_It_Anyway

    osint5

    Justin_1
    Justin_2
    Nikolai_2
    Traveling
    Vacation

    pwn6

    furor-RPI
    Jump_Is_Easy
    Jump_Is_Found
    Jump_Not_Easy
    Jump_Not_Working
    tiktok-RPI

    rev7

    FeistyCrypt
    Painting_Windows
    Starbucks
    UMD-FS-RPI
    Wake_Me_Up_Before_I_Go_Go
    What_is_Memory
    Willow-RPI

    steg7

    Coldplay_Flags
    Hidden_Card
    Magic
    Pickle_Rick
    Roy_Randomness
    Steg_Safari
    Testudo_Pizza

    2020

    5 challengesCTFtime

    misc5

    caas
    coalminer
    crypto
    easy_right
    jump_not_found
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