kendinikaybet's WhoKnocks ?

Author:
kendinikaybet

Language:
C/C++

Upload:
2026-03-01 08:10

Download

Platform:
Windows

Difficulty:
3.0

Quality:
4.0

Arch:
x86-64

Downloads:
43

Size:
139.45 KB

Writeups:
0

Comments:
3

Description

Protection: > Custom XOR-based encoder > Basic anti-debug (IsDebuggerPresent) Goal: > Find valid username/password pair No standard encoding (base64, md5 etc.), custom algorithm. Intended solution: understand the algorithm, not patch.

Comments (3)
Writeups (0)

You must be logged in to post a comment

r8 on 2026-03-03 14:55: [Click to reveal]

Hussam on 2026-03-04 14:57: from binascii import * key= [0x20, 0x1B, 0x8, 0x4C, 0x5F, 0x7F, 0x32, 0x6, 0x58, 0x1A, 0x58, 0x45, 0x59, 0x52, 0x52,0x0] def decodeUsername(username:'str')->'str': global key result="" print(len(username)) u=0 for i in range(0,16): if u==len(username): c=key[i] print(hex(c)) result+=chr(c) u=0 continue c=((ord(username[u])^(key[i]))) print(hex(c)) result +=chr(c) u+=1 result +=chr(key[15]) return result def passwordGeneration(UBDK :'str'): result="" for i in range(0,len(UBDK)): print((((ord(UBDK[i])*0xab)>>8 >>1)*2 )) print((((ord(UBDK[i])*0xab)>>8 >>1) )) if ord(UBDK[i])&1!=0: result+='K' elif UBDK[i] ==chr(3 * (ord(UBDK[i]) // 3)): if ord(UBDK[i])&0x3 !=0: result+='f' else: result+='V' else: result+='b' return result username=input("Enter username\n") decoded=decodeUsername(username) print(hexlify(bytes(username,"utf-8"))) print(passwordGeneration(decoded)[:-1])

genass3 on 2026-03-05 18:26: [Click to reveal]

Show all spoilers

You must be logged in to submit a writeup

crackmes.one

crackmes.one

kendinikaybet's WhoKnocks ?