Kalipso's My first crackme

Author:
Kalipso

Language:
C/C++

Upload:
2023-04-22 04:13

Download

Platform:
Windows

Difficulty:
1.1

Quality:
4.2

Arch:
x86-64

Downloads:
6

Size:
18.50 KB

Writeups:
0

Comments:
10

Description

Find the password,it is easy

Comments (10)
Writeups (0)

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MichaelBrown on 2023-04-25 10:39: [Click to reveal]

Ch4daev on 2023-04-25 11:52: [Click to reveal]

OnlyPrinzP on 2023-04-25 20:55: [Click to reveal]

pstrelnikov on 2023-04-29 16:46: This one was unintentionally very instructive. I was reversing using Ghidra when I found the key in the code but couldn't get it to work from the command prompt. The problem was that Ghidra subtly changed the string in the list of strings -- it "escaped" the single quote with a backslash when it displayed it: fdooFPOkfpO[90PFJIKpofj9[O0PFJ[OPjkfopj[OPFJ[pfjOPJFOPjfopJFPOjfopk]FolpjfoFjfop[lJKFOPjfpKFLK;jofjKOLP\'FJKLjfklFJKf Thanks to OnlyPrinzP for showing the actual working key: a quick DIFF between it and my Ghidra-copied-string showed the difference, and I learned something new about Ghidra as well in the process.

fedegaza1 on 2023-05-02 01:09: How does one crack the program in order to escape the check? already tried several changes on jne to jmo, but I see it calls an external module for the comparison.

BeginnerCracker123 on 2023-05-07 09:02: Yea it was actually easy. It took me like 15 seconds. I did a KeyGen.

minixreal on 2023-06-14 09:11: [Click to reveal]

minixreal on 2023-06-14 09:13: + i cant use this program in x64dbg

muniategui on 2023-08-25 11:22: fedegaza1 the external module is memcmp. You have to patch .text:00007FF798ED130C jnz with 2 nop. That will make the comparison work for any length. Then you have to patch .text:0000000140001323 with jmp to make it always jump to the cout instead of making the check of the memcmp result. Also, you could patch eax.

fortmea on 2024-01-11 15:47: [Click to reveal]

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crackmes.one

crackmes.one

Kalipso's My first crackme