accountant_1c6c17af86b3b93d228a11a404f3e49d.tar.gz

Christian Wolff is an accountant. <code>nc pwn1.ctf.zer0pts.com 9001</code>

accountant

Please answer the <a href="https://docs.google.com/forms/d/e/1FAIpQLScrPZYnKym8gYiNfGLHnWtvywogob3fxcEVdvX3lwehy1bAnA/viewform?usp=sf_link" target="_blank">survey</a> for the flag. The more detailed your feedback is, the happier the organizers will be.

survey

q-solved_49910e222df32bc630a54d63475d66c5.tar.gz

I copied the solver of a reversing task from the future. But it doesn't show the flag forever :thinking:

q-solved

miniblog_sharp.7z

Backup is important! But not only backup is important... <a href="http://miniblog2.ctf.zer0pts.com:8018" target="_blank">Challenge</a> * The password of the distributed file is the flag of <code>miniblog++</code> challenge.

miniblog#

zer0tp_094208cd19ec1e5e8f32040e1cba9903.tar.gz

Zer0TP makes it super easy for service developers to implement an authentication scheme! <a href="http://demoapp.ctf.zer0pts.com:8077" target="_blank">Demo service</a>

Zer0TP

redis-lite_607c5490b78c0b9f689e1e2ea7da3db5.tar.gz

How would you find vulnerabilities when the source code is large? <code>redis-cli -h pwn1.ctf.zer0pts.com</code>

redis-lite

sbxnote_bd97456fa5bb24a40d5c06f562ffcb1d.tar.gz

Even a simple note is sandboxed in 2022. What a hard world to live in! <code>nc pwn2.ctf.zer0pts.com 9004</code> * 1 connection per source

sbxnote

disco-festival.7z

Getting bored of partying? Let's dance at the festival! <a href="http://festival.ctf.zer0pts.com:8017" target="_blank">Challenge</a> * The password of the distributed file is the flag of <code>Disco Party</code> challenge.

Disco Festival

curvecrypto_36814b32fb1686c0348eb82b080de32b.tar.gz

EllipticCurve can be adaptive to encryption.

CurveCrypto

kvstore_5aff6ac255a5017644ee57549e7e5c5c.tar.gz

Do you want a heap exploitation challenge? This is the one. <code>nc pwn1.ctf.zer0pts.com 9005</code>

kvstore

0av_d6c42c7ddf25c66f9828b3a272a1d8c4.tar.gz

This anti-virus prevents me from reading the flag. Can you read <code>/playground/flag.txt</code> anyhow? <code>nc pwn3.ctf.zer0pts.com 10003</code>

modern-rome_c8561cd663bfc1f5dd6c14d3350fb614.tar.gz

Ancient numeric system still used in the modern world. <code>nc pwn1.ctf.zer0pts.com 9000</code>

Modern Rome

krce_9d8ac6938db50d3f75929549ed8669ca.tar.gz

Full chain...? <code>nc pwn3.ctf.zer0pts.com 9009</code>

kRCE

service_effb65331425e241f1bb4a43e96594ad.tar.gz

service

disco-party_3ce4b185f051886dc48e38a83c95b1c3.tar.gz

It's party time right now, so could you refrain from discussing any complicated matters? <a href="http://party.ctf.zer0pts.com:8007" target="_blank">Challenge</a>

Disco Party

memsafed_6054317bedf92c391f86938bbb059e25.tar.gz

D language is similar to C in its syntax but much more secure than C. <code>nc pwn1.ctf.zer0pts.com 9002</code>

MemSafeD

Check <a href="https://discord.gg/3QrDP2sMYd" target="_blank">Discord</a> for the flag. We will also announce some important information there.

welcome

eddh_a57268a504649a7bfa94d74cbf153aeb.tar.gz

I heard about that EdDSA is more secure than ordinal ECDSA. So ECDH on Edwards Curve too? <code>nc crypto.ctf.zer0pts.com 10929</code>

EDDH

anti_fermat_b8b9ddc83b728c86db324bd10da2242b.tar.gz

I invented Anti-Fermat Key Generation for RSA cipher since I'm scared of the <a href="https://en.wikipedia.org/wiki/Fermat's_factorization_method" target="_blank">Fermat's Factorization Method</a>.

Anti-Fermat

chirashi-sushi_10d6ca8f9daee50418dc61b955059549.tar.gz

Chirashi-sushi

readflag_37b81ed369aaea43aa6e425bab36b3bb.tar.gz

All you need is strings. <code>nc misc.ctf.zer0pts.com 10002</code>

readflag

karen_09b3e12d31dec5649953b2a2613c05c3.tar.gz

Karen

gitfile_explorer_522842fb82f30e2300e106623a7b6982.tar.gz

Read <code>/flag.txt</code> on the server. <a href="http://gitfile.ctf.zer0pts.com:8001/" target="_blank">Challenge</a>

GitFile Explorer

ok_1e2ed0e14ede2ca100a37c4e4ad28c01.tar.gz

GOLDEN SUN provides you a key and SILVER MOON provides you a ciphertext. <code>nc crypto.ctf.zer0pts.com 10333</code>

miniblog++_d49503ac72f1d158b0b794853a23d871.tar.gz

Backup is important! <a href="http://miniblog.ctf.zer0pts.com:8008" target="_blank">Challenge</a>

miniblog++

mathhash_3ec57fae465bf3e9c54a3b9782ce8ae6.tar.gz

I invented a very fast yet secure hash algorithm! <code>nc misc.ctf.zer0pts.com 10001</code>