cryptexx's no strings attached

Author:
cryptexx

Language:
C/C++

Upload:
2020-07-27 12:32

Download

Platform:
Windows

Difficulty:
4.0

Quality:
4.0

Arch:
x86

Downloads:
15

Size:
88.50 KB

Writeups:
1

Comments:
11

Description

Strings are obfuscated in this crackme. Bytepatching is allowed but try to reconstruct the original password as well.

Comments (11)
Writeups (1)

You must be logged in to post a comment

parkchanjin on 2020-08-06 06:22: sub_403A60 = Create Password

jeffli6789 on 2020-08-08 01:48: Interesting one! The real challenge is to find the main() function

DARKCODER on 2020-08-14 17:49: [Click to reveal]

0xSSS on 2020-08-16 10:10: Actually not that much obfuscated. Just find out the key function,comprehend its logic,and it's easy to found the key in the memory map (thru the "this" ptr)

anonymous on 2020-08-17 09:46: [Click to reveal]

anonymous on 2020-08-17 09:47: I spend almost 4 hours to solve it. Still weak.

juansacco on 2020-08-29 10:15: [Click to reveal]

Saeed9321 on 2020-09-30 06:43: 004069e1 JZ LAB_00406a0e patched to JNZ CORRECT

_BLANK_ on 2020-11-19 02:26: Thanks for challenge... It's easy and nice one. I'm just a beginner but I solved it just in 15 minutes.... Heez

panic on 2020-12-18 14:11: im beginner rev i dntknow anything its very hard to me :(

fb1 on 2024-08-24 04:09: very easy, spend an hour finding function. I have learned that you can use x86dbg to skip until user-code :)

Show all spoilers

You must be logged in to submit a writeup

Solution by jd071667 on 2020-08-14 15:52:
Challenges were in finding the main function and using the debugger to uncover the correct password.

Download

crackmes.one

crackmes.one

cryptexx's no strings attached