I will try organizing the challenges by difficulty and category in the README since some people are using them as practice, however the difficulty I give it may be different than what you would expect since I mainly do reverse engineering. I will try to keep difficulty consistent throughout each category though.
Some categories here will also not match what is on the challenge solution README, that is because here I will put into the actual category while there I just put what the ctf said it was.
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Key2success | 2021 - ShadowCTF | Trivial |
| Unchallenging | 2021 - ShadowCTF | Trivial |
| Warm Up Rev | 2021 - ShadowCTF | Trivial |
| Pwntown 1 | 2021 - Tenable | Trivial |
| Speeds and Feeds | 2021 - picoCTF | Trivial |
| BF Means Best Friend Right? | 2021 - HackPack | Trivial |
| Tiny Interpreter | 2021 - dCTF | Trivial |
| Little Mountain | 2021 - Circle City Con | Trivial |
| wstrings | 2021 - RedPwn | Trivial |
| Thirsty Cow | 2021 - ShadowCTF | Easy |
| Vault | 2021 - ShadowCTF | Easy |
| Little Baby Rev | 2021 - Securinet | Easy |
| Rocca Pia | 2021 - dvCTF | Easy |
| Crackme py | 2021 - picoCTF | Easy |
| Hurry Up! Wait! | 2021 - picoCTF | Easy |
| Transformation | 2021 - picoCTF | Easy |
| FREE FLAGS | 2021 - Angstrom | Easy |
| GaussBot | 2021 - HackPack | Easy |
| Painting Windows | 2021 - UMDCTF | Easy |
| Starbucks | 2021 - UMDCTF | Easy |
| Just In Time | 2021 - dCTF | Easy |
| Guardian | 2021 - Circle City Con | Easy |
| Fewer Thoughts, Head Empty | 2021 - ImaginaryCTF | Easy |
| Normal | 2021 - ImaginaryCTF | Easy |
| Stings | 2021 - ImaginaryCTF | Easy |
| Dotty | 2021 - RaRCTF | Easy |
| verybabyrev | 2021 - RaRCTF | Easy |
| Ransomware | 2021 - BambooFox | Easy - Medium |
| Better Than ASM | 2021 - BambooFox | Easy - Medium |
| Ware | 2021 - Offshift | Easy - Medium |
| That's Not Crypto | 2021 - justCTF | Easy - Medium |
| Pwntown 3 | 2021 - Tenable | Easy - Medium |
| Solver | 2021 - Trollcat | Easy - Medium |
| Keygenme Py | 2021 - picoCTF | Easy - Medium |
| Revex | 2021 - Angstrom | Easy - Medium |
| Backdoor | 2021 - Cyber Apocalypse | Easy - Medium |
| NET_DOT | 2021 - FooBar | Easy - Medium |
| Numerical Computing | 2021 - FooBar | Easy - Medium |
| WarGames | 2021 - FooBar | Easy - Medium |
| Function Pointer Fun | 2021 - HackPack | Easy - Medium |
| Bell | 2021 - dCTF | Easy - Medium |
| bread making | 2021 - RedPwn | Easy - Medium |
| Jumprope | 2021 - ImaginaryCTF | Easy - Medium |
| Infinite Free Trial | 2021 - RaRCTF | Easy - Medium |
| RaRPG | 2021 - RaRCTF | Easy - Medium |
| Very TriVial Reversing | 2021 - RaRCTF | Easy - Medium |
| Hash | 2021 - Offshift | Medium |
| X and Or | 2021 - Offshift | Medium |
| Hacker Manifesto | 2021 - Tenable | Medium |
| Pwntown 4 | 2021 - Tenable | Medium |
| No Debug | 2021 - Trollcat | Medium |
| Recur | 2021 - UTCTF | Medium |
| Shop | 2021 - picoCTF | Medium |
| Infinity Gauntlet | 2021 - Angstrom | Medium |
| Jailbreak | 2021 - Angstrom | Medium |
| Alienware | 2021 - Cyber Apocalypse | Medium |
| Exhell | 2021 - HackPack | Medium |
| FeistyCrypt | 2021 - UMDCTF | Medium |
| dimensionality | 2021 - RedPwn | Medium |
| Roolang | 2021 - ImaginaryCTF | Medium |
| Run! | 2021 - Securinet | Medium - Difficult |
| Infected | 2021 - Zer0pts | Medium - Difficult |
| Syscall 777 | 2021 - Zer0pts | Difficult |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| What's Your Input | 2021 - picoCTF | Trivial |
| Binary Gauntlet 0 | 2021 - picoCTF | Easy |
| Binary Gauntlet 1 | 2021 - picoCTF | Easy - Medium |
| Binary Gauntlet 2 | 2021 - picoCTF | Easy - Medium |
| Stonks | 2021 - picoCTF | Easy - Medium |
| Baby Graph | 2021 - RITSEC | Easy - Medium |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Substitution | 2021 - dvCTF | Trivial |
| Mod 26 | 2021 - picoCTF | Trivial |
| The More, The Less | 2021 - dvCTF | Easy |
| Mind Your Ps and Qs | 2021 - picoCTF | Easy |
| Dachshund Attacks | 2021 - picoCTF | Easy |
| Netrunner Encryption | 2021 - Tenable | Medium |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Rick and Morty on Adventure | 2021 - ShadowCTF | Trivial |
| Valhalla | 2021 - ShadowCTF | Trivial |
| Monk | 2021 - ShadowCTF | Easy |
| Pixelated | 2021 - picoCTF | Medium |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Brutus Killer | 2021 - ShadowCTF | Trivial |
| Linux Help | 2021 - ShadowCTF | Trivial |
| Pidieff | 2021 - dvCTF | Trivial |
| Disk, Disk, Sleuth | 2021 - picoCTF | Trivial |
| Matryoshka Doll | 2021 - picoCTF | Easy |
| Weird File | 2021 - picoCTF | Easy |
| Wireshark Doo Dooo Do Doo | 2021 - picoCTF | Easy |
| New Caesar | 2021 - picoCTF | Easy - Medium |
| Play Nice | 2021 - picoCTF | Easy - Medium |
| New Vignere | 2021 - picoCTF | Medium - Difficult |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Short and Sweet | 2021 - Tenable | Trivial |
| Parsey McParser | 2021 - Tenable | Easy |
| Print N Lowest Numbers | 2021 - Tenable | Easy |
| DDR | 2021 - Nahamcon | Easy |
| Find Largest Triangle | 2021 - Tenable | Easy - Medium |
| Is The King In Check | 2021 - Tenable | Easy - Medium |
| Random Encryption Fixed | 2021 - Tenable | Easy - Medium |
| Challenge Name | CTF | Difficulty |
|---|---|---|
| Magikarp Ground Mission | 2021 - picoCTF | Trivial |
| Python Wrangling | 2021 - picoCTF | Trivial |
| Obedient Cat | 2021 - picoCTF | Trivial |
| Static Ain't Always Noise | 2021 - picoCTF | Trivial |
| Tab, Tab, Attack | 2021 - picoCTF | Trivial |
| Wave A Flag | 2021 - picoCTF | Trivial |
| Broken qr | 2021 - Tenable | Easy |
| Formatting | 2021 - ImaginaryCTF | Easy |
| Puzzle 2 | 2021 - ImaginaryCTF | Easy |