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Tuts 4 You

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Featured Replies

Posted

Language : .NET
Platform : Windows
OS Version : All Windows (.NET Framework 4.6 or higher)
Packer / Protector : The4Got10's Protector (Modded ConfuserEx) with VM and Native Shield

Description : 

Crack (I don't care if this file is fully unpacked or not) this application and make a short tutorial for it.

I want to know my app are strong or weak.

Thank!

Screenshot :

spacer.png

Protected.7z

if  cant start this app try 2nd file

Protected2nd.7z

 

image.png.9b8034c6ca7ab7f83aac99718cde65b0.png

  • Author
44 minutes ago, NeoNCoding said:

image.png.9b8034c6ca7ab7f83aac99718cde65b0.png

i test on 3 different pc, this app working
did u extract file ? if not pls
extract file then start program
if still error try this i change something.
 

Protected.7z

Edited by NightBaron
add new file

you can dump using megadumper, if you suspend process to prevent anti dbg from running.

result is : ConsoleApp1.exe 1.248 mb 

 

little xor on confuserexstring decryptor method  (it stupid only 1 param out of 3 are usefull) :

 eGUSUsd.png

 

you need to patch a call method at EP (call to native dll) and you can debug and dump correct strings from memory, because it changes every time (not sure but i would say im 60% right)

 

  • Author
5 hours ago, XenocodeRCE said:

you can dump using megadumper, if you suspend process to prevent anti dbg from running.

result is : ConsoleApp1.exe 1.248 mb 

 

little xor on confuserexstring decryptor method  (it stupid only 1 param out of 3 are usefull) :

 eGUSUsd.png

 

you need to patch a call method at EP (call to native dll) and you can debug and dump correct strings from memory, because it changes every time (not sure but i would say im 60% right)

 

nice to see you here XenocodeRCE

nice trick for dump .net module (it work, Thank)
and i use code virtualization on key check algorithms, maybe debugging is an extremely hard task 

i'm waiting for someone's can get correct key or crack this app for accept every key :)

  • 1 month later...

Nice crackme you got here. To begin with I tried cleaning the code as much as possible but it still is very messy, so my approach was simply debugging the file and stepping trough the code. I made some small changes and now it returns something what seems like the actual "key".

gTpcACH.png

Result.rar

Edited by MulaB
Forgot to add the file.

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