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    UIUCTF

    8 editions·164 challenges·2018–2026

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    20262025202420232022202120202018
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    2026

    24 challengesCTFtime

    crypto4

    D_Side
    Movement_I
    positive_thinking
    Young_Cryptography

    misc6

    emacsjail2
    jail
    n_force
    Phantasmoon
    Proof
    smaller_jail

    osint4

    Childhood_Memories
    Lost_Media
    Secret_Account
    Something_Handmade

    pwn2

    Firefly_Complete_Combustion
    Sparxie_Vanishing_Encore

    rev5

    Behind_the_Curtain
    glyphs
    GODMODE_999
    vector_cache
    Veil_of_Evernight

    web3

    CaveFilePaths
    Explore_the_Cave
    Nabi_AI

    2025

    27 challengesCTFtime

    crypto4

    back_to_roots
    symmetric
    the_shortest_crypto_chal
    too_many_primes

    misc5

    ai_clippy
    Comments_Only
    emacsjail
    nocaml
    X_Ray

    osint2

    cherry_blossom
    park

    pwn6

    Baby_Kernel
    Bootkit
    do_re_mi
    Lua.efi
    QAS
    SMM_Is_Asleep

    rev6

    blazing_fast
    damaged_SoC
    ELF_Capsule
    flag_checker
    Launch_Sequence
    weirdcaml

    web4

    Ruler_of_the_Universe
    Shipping_Bay
    Supermassive_Black_Hole
    Upload_Upload_and_Awayi

    2024

    28 challengesCTFtime

    crypto7

    Determined
    Groups
    Key_in_a_Haystack
    Naptime
    Snore_Signatures
    Without_a_Trace
    X_Marked_the_Spot

    misc4

    Astea
    Picoify_100_500
    Push_and_Pickle
    Slot_Machine

    osint3

    Chunky_Boi
    New_Dallas
    Night

    pwn5

    Backup_Power
    pwnymalloc
    Rusty_Pointers
    Syscalls
    Syscalls_2

    rev7

    Goose_Chase
    Lost_Canary
    Pwnymaps
    Summarize
    Time_Travel
    tooooo_fancy
    Wild_Goose_Chase

    web2

    Log_Action
    pwnypass

    2023

    23 challengesCTFtime

    crypto6

    At_Home
    crack_the_safe
    Group_Project
    Group_Projection
    Morphing_Time
    Three-Time_Pad

    misc7

    Corny_Kernel
    Schrodingers_Cat
    Tornado_Warning
    vimjail1
    vimjail1.5
    vimjail2
    vimjail2.5

    pwn4

    Chainmail
    Mock_Kernel
    Rattler_Read
    Virophage

    rev5

    Fast_Calculator
    geoguesser
    pwnykey
    vmwhere1
    vmwhere2

    web1

    adminplz

    2022

    26 challengesCTFtime

    crypto7

    asr
    Bro-key-n
    EllipticClockCrypto
    MilitaryGradeEncryption
    mom_can_we_have_AES
    That-crete_Log
    WringingRings

    jail5

    AHorseWithNoNames
    AHorseWithNoNeighs
    FirefoxShell1
    FirefoxShell2
    safepy

    pwn4

    no-syscalls-allowed
    odd_shell
    WASM1_AOT
    WASM2_stdcopy

    rev5

    CPSC
    Library_of_Babel
    Reject_to_Inject
    revop
    VastCornfields

    web5

    Frame
    modernism
    precisionism
    spoink
    woeby

    2021

    33 challengesCTFtime

    crypto4

    back_to_basics
    dhke_adventure
    dhke_intro
    pow_erful

    jail2

    baby_python
    baby_python_fixed

    kernel7

    beyond_root
    bpf_badjmp
    insecure_seccomp
    PwnyOS_Hidden_Hard_Drive
    PwnyOS_Zeroday_Part_1
    PwnyOS_Zeroday_Part_2
    Twitch_Plays_PwnyOS

    pwn4

    Catching_Al_Capwn
    Gonnegtions
    Pwn_Warmup
    v8

    rev10

    hvhpgssynt
    pawnfish
    plugin
    Prime_Extravaganza
    ropfuscated
    signals
    smorgas_bored
    speakeasy
    Tedious
    vaudeville

    web6

    essveegee
    miniaturehorsedb
    ponydb
    pwnyIDE
    wasmcloud
    yana

    2020

    2 challengesCTFtime

    misc2

    Accounting_Accidents
    MuJS

    2018

    1 challengesCTFtime

    misc1

    arbitrary_null_byte_write
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