ctfcli
ctfcli is a tool to manage Capture The Flag events and challenges (by CTFd)
Crypton
Library consisting of explanation and implementation of all the existing attacks on various Encryption Systems, Digital Signatures, Key Exchange, Authentication methods along with example challenges from CTFs (by ashutosh1206)
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| ctfcli | Crypton | |
|---|---|---|
| 1 | 1 | |
| 156 | 1,171 | |
| 3.8% | - | |
| 6.6 | 0.0 | |
| 13 days ago | almost 3 years ago | |
| Python | Python | |
| Apache License 2.0 | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
ctfcli
Posts with mentions or reviews of ctfcli.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-06-21.
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ctfd-parser: Extract the challenges from a remote CTFd instance to a local folder
This looks really cool! If you're interested I would be happy to help get something like your tool into our command line tool for managing CTFd instances.
Crypton
Posts with mentions or reviews of Crypton.
We have used some of these posts to build our list of alternatives
and similar projects.
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Cyber Apocalypse CTF 2022 Writeup - Down the Rabinhole
n = 56438641309774959123579452414864548345708278641778632906871133633348990457713200426806112132039095059800662176837023585166134224681069774331148738554157081531312104961252755406614635488382297434171375724135403083446853715913787796744272218693049072693460001363598351151832646947233969595478647666992523249343972394051106514947235445828889363124242280013397047951812688863313932909903047 e = 2 B = 263063435253385937926984981365320113271 c1= 429546912004731012886527767254149694574730322956287028161761007271362927652041138366004560890773167255588200792979452452 c2= 29903904396126887576044949247400308530425862142675118500848365445245957090320752747039056821346410855821626622960719507094119542088455732058232895757115241568569663893434035594991241152575495936972994239671806350060725033375704703416762794475486000391074743029264587481673930383986479738961452214727157980946 delta = (B + n) >> 1 c1 = (c1 + delta^2) % n c2 = (c2 + delta^2) % n # Source: https://github.com/ashutosh1206/Crypton/blob/master/RSA-encryption/Attack-Franklin-Reiter/exploit.sage def gcd(a, b): while b: a, b = b, a % b return a.monic() def franklinreiter(C1, C2, e, N, a, b): P. = PolynomialRing(Zmod(N)) g1 = (a*X + b)^e - C1 g2 = X^e - C2 result = -gcd(g1, g2).coefficients()[0] return result def int_to_bytes(x: int) -> bytes: return x.to_bytes((x.bit_length() + 7) // 8, 'big') bg = 0x272727272727272727272727272727272727272727272727272727272727272727272727272727 soln = franklinreiter(c2, c1, e, n, 1 << 312, bg + delta - (delta << 312)) - delta print(int_to_bytes(int(soln)))
What are some alternatives?
When comparing ctfcli and Crypton you can also consider the following projects:
CTFever - Fantastic toolkit for CTFers and everyone.
CTFNote - CTFNote is a collaborative tool aiming to help CTF teams to organise their work.
CTFs - CTF Cheat Sheet + Writeups / Files for some of the Cyber CTFs that I've done
featherduster - An automated, modular cryptanalysis tool; i.e., a Weapon of Math Destruction
nsa-codebreaker-2020 - My solutions to the 2020 NSA Codebreaker Challenge
basecrack - Decode All Bases - Base Scheme Decoder
cry-me - CRY.ME (CRYptographic MEssaging application)