Exxtra12's Ext.challenges

Author:
Exxtra12

Language:
C/C++

Upload:
2019-12-21 01:38

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Platform:
Unix/linux etc.

Difficulty:
2.0

Quality:
5.0

Arch:
x86-64

Downloads:
244

Size:
8.28 KB

Writeups:
1

Comments:
9

Description

ctf_challenges - try to solve a set of ctf problems. xor good luck

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0d1n on 2019-12-26 15:35: very easy, Just jumped from 0x0000087cto 0x00000869; 0x:~/Desktop# ./xordemo Need exactly one argument. 0x:~/Desktop# ./xordemo test Jackpot 0x:~/Desktop# ./xordemo testinvalid Jackpot 0x:~/Desktop#

def00x on 2019-12-29 15:52: I found the hex of 'bigbeef1' and 0x20a170c050a1410 ... the first XOR SECRET_PWD should XOR to the latter hex... there is a logic with a counter there... tried a few things with no luck... Any ideas on this one...?

tiencong283 on 2019-12-29 16:03: It should be marked as level 1

def00x on 2019-12-29 17:57: Why rungirl3 still fails???

def00x on 2019-12-29 20:35: [Click to reveal]

Verideth on 2019-12-31 05:58: Awesome crackme! Did a bit of learning :-)

FRIEND35 on 2020-01-11 16:51: iihih

vikasgola2015 on 2020-01-30 19:38: could someone help me how did you get the solution? I tried b = bytearray.fromhex('020a170c050a1410') a = bytearray.fromhex('3166656562646162') ai = bytearray() for i in range(8): ai += bytes([a[i]+i]) aib = bytearray() for i in range(8): aib += bytes([ai[i]^b[i]]) flag = bytearray() for i in range(8): flag += bytes([aib[i]-i]) but no luck :-( Am I doing something wrong?

jimsktsmith on 2022-02-05 16:35: [Click to reveal]

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Solution by zerophym on 2020-02-10 17:08:
It contains information needed and python script to solve the problem.

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crackmes.one

crackmes.one

Exxtra12's Ext.challenges