slice's simple ctf

Author:
slice

Language:
C/C++

Upload:
2024-09-21 02:32

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Platform:
Unix/linux etc.

Difficulty:
2.7

Quality:
4.2

Arch:
x86-64

Downloads:
44

Size:
15.48 KB

Writeups:
3

Comments:
7

Description

find the flag!! flag starts with CTF_ warning: it doesnt strip '\n' from the end of your input

Comments (7)
Writeups (3)

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NameOfFool on 2024-10-01 08:32: [Click to reveal]

dev0 on 2024-10-06 11:16: @NameOfFool unless you patched the binary I don't think that is correct. There is a "hash function" that needs to be reversed to reveal the key to print the correct input message. key sha1 e6f2df5e3248824c62840e71dcfe639e7da7a569

mikeyM on 2024-10-13 22:27: As mentioned by dev0 hash function needs to be reverse engineered. CTF key hash sha2-256 is 76bd1ce2c417d18ab997fc6b27e6782b164ee451bf729cfea56e7dfeff2d5d6e

anon786 on 2024-10-15 18:01: Use ghidra to disassemble and decompile, then observe the call and functions...

anon786 on 2024-10-15 18:29: sha3-256 of the CTF key is: 7a616e031f268ca600e41ae389b7a116e9cdeaaa1ea3cf4ec136cef01631247f

rwe on 2024-10-22 13:28: Just wanted to thank you for this submission! This was the first CTF I've ever done and it was super fun!

alxxx on 2024-10-28 11:41: [Click to reveal]

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Solution by cd_n0 on 2024-10-12 23:03:

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Solution by NomanProdhan on 2024-10-29 15:01:
I used Ghidra to analyze and solve the challenge and included a Python script in the PDF to generate the actual.

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Solution by anon786 on 2024-10-30 10:05:
https://github.com/deepsecops/Challanges/blob/main/crackmes/slice-simple-ctf/Simple%20CTF.md

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crackmes.one

crackmes.one

slice's simple ctf