Description
Helps an important person to find the content of his numeric purse.
Continue reading [NDH 2018] [Forensics 200 – Where Is My Purse] Write Up
Helps an important person to find the content of his numeric purse.
Continue reading [NDH 2018] [Forensics 200 – Where Is My Purse] Write Up
For this challenge, we need to reverse a briefly obfuscated python script to find an input value that will validate some conditions to get the flag.
#!/usr/bin/env python3 from binascii import unhexlify as sOup from operator import attrgetter as souP ME_FLAGE = 'censored' SoUp = input soUP = hex sOUp = print sOuP = ord SOuP = open def SoUP(sOUP): soup = 0 while sOUP != 0: soup = (soup * 10) + (sOUP % 10) sOUP //= 10 return soup def SOup(sOUP): soup = 0 for soUp in sOUP: soup *= 10 soup += sOuP(soUp) - sOuP('0') return soup def SOUP(): Soup = SoUp()[:7] print(Soup) if not souP('isdigit')(Soup)(): sOUp("that's not a number lol") return soup = SoUP(SOup(Soup)) SouP = souP('zfill')(soUP(soup)[2:])(8)[-8:] if sOup(SouP) == souP('encode')('s0up')(): sOUp("oh yay it's a flag!", ME_FLAGE) else: sOUp('oh noes rip u') if __name__ == '__main__': SOUP()
Continue reading [EasyCTF 2018] [Reverse 150 – Soupstitution Cipher] Write Up
Hello everyone,
Last year, we were on final for the Defcamp. We finished in the bottom of the ranking (thanks to… actually to the night before, which had been a bit rude ^^).
But this year, we decided to be better (even if we again tried a lot of bars). And it paid! We were constantly moving from place #5 to #6, and ten minutes before the end, one of us flagged a challenge, and secured the 5th place!
Even if it’s not the first time we get into the Top5, we were in front of famous teams, and it was a real challenge to deal with it. But, hey, fighting DCUA, P4, and others was really fun after all! 🙂
We would like to thanks the organizers of the CTF, and of the Defcamp for their awesome work, and to say them : “See you next year ;)”
Here are the ranks :
The goal was to bypass the firewall, the target os 10.2.63.250 and you can scan it. (sorry, not the real description, but we forgot to backup it.).
Continue reading [DCTF Finals 2017] [WEB 400 – Infinity] Write Up