lowercase's simple password crack me (not simple)

Author:
lowercase

Language:
C/C++

Upload:
2024-03-06 05:50

Download

Platform:
Windows

Difficulty:
2.4

Quality:
3.2

Arch:
x86-64

Downloads:
32

Size:
11.50 KB

Writeups:
2

Comments:
22

Description

time yourself if u could and upload ur time in the comments if you get it! my first crackme

Comments (22)
Writeups (2)

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nightxyz on 2024-03-08 16:46: 9 characters beginning with capital letter. 2 hours 20 minutes with manual unpacking using x64dbg.

sporta778 on 2024-03-08 21:17: you are ambitious, urine them;))

Rem00n on 2024-03-09 16:32: 10 minutes, it appears in RAX when using Animate into in x64dbg :o

lowercase on 2024-03-10 01:02: @Rem00n nice! you should post a solution

The_Kevin_ on 2024-03-11 08:35: Nice, I take 2 days to bypass that!

nightxyz on 2024-03-11 18:45: We will see, who will pull the shortest time value out of his ass ? After all, we don't know the truth.

lowercase on 2024-03-12 05:55: @nightxyz yea, 2 hours is believable but 1 minute is kinda sus. you cant just search for strings normally so id highly doubt @test did it in 1 minute post a solution

daddypenguin on 2024-03-14 16:52: [Click to reveal]

cnathansmith on 2024-03-15 20:24: 5-10 mins

cnathansmith on 2024-03-15 20:26: Unpack with UPX, break on the size comparison before memcmp, then just check the arguments in rcx and rdx for the one that's not your input

1337ReverseEngineer on 2024-03-16 09:57: Quite easy. Took ~2 hours. No need to even unpack it.

cnathansmith on 2024-03-16 15:11: @1337ReverseEngineer it would've saved you 2 hours

bang1338 on 2024-03-18 00:05: interesting...

justAuser on 2024-03-20 16:52: [Click to reveal]

S3cre7Reveal3d on 2024-03-31 16:56: i need help, i get this error when i search IAT. Fthunk

S3cre7Reveal3d on 2024-03-31 21:08: I did it, I unpacked with UPX and Showed the Flag.

nignog on 2024-04-02 05:53: i just went stepping til RCX and RDX comp

1337 on 2024-05-02 11:46: like 20 mins of staring at ida and then decided to dynamically analyse. Breakpoint at the memcmp call and rcx holds ur input while rdx was the answer nice

navadeep on 2024-08-08 13:22: can any one please explain . whats the UPX and unpacking that you all are talking about . im new here :)

Ja4V8s28Ck on 2024-09-18 07:23: UPX is a program to compress(pack) exe files. This crackme is compressed (packed) using UPX (there are many more to compress and obfuscate exe files). You can identify which program is used to pack or obfuscate using "Detect It Easy" program or anyother of your choice https://upx.github.io/ (Read the documentation to know how to pack and unpack programs)

XJ_gout on 2024-11-01 14:09: [Click to reveal]

phucle225 on 2024-12-21 17:05: nop this jnz 0x00007FF7211A1AA0

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Solution by cnathansmith on 2024-03-15 20:24:
Simple walk-through with unpacking info

Download

Solution by 1337ReverseEngineer on 2024-03-16 10:22:

Download

crackmes.one

crackmes.one

lowercase's simple password crack me (not simple)