[neonbytes]

Hello everyone,

Is there a way to decrypt AES GCM 256 without statically linking any library?
A pure C++ implementation?
Or using Loadlibrary with a DLL (OpenSSL or another crypto) ?

Thank you

[Tafelpoot]

https://github.com/kokke/tiny-AES-c

[cghhhhasd]

idk what OS ur using but Windows comes with WinCrypt which gives you access to lots of encryption algorithms, hash algorithms, etc.

[0x0SH3]

You can do it by using WinApi only (header: <Bcrypt.h>) without linking any library. Try to check this repo on github XShar/Fuck_Chrome_C it performs a chromium password decryption using pure C winapi

[neonbytes]

github.com/kokke/tiny-AES-c

Thanks, although it says "small and portable implementation of the AES ECB, CTR and CBC encryption algorithms" it does not cover GCM.

[guardian]

Of course, those libraries would also be written in C++. Just have a look at their source code and learn how they implemented it. Then implement it in your project.

[HFDone]

Thanks, although it says "small and portable implementation of the AES ECB, CTR and CBC encryption algorithms" it does not cover GCM.

for GCM you will need to use openssl
https://github.com/bawejakunal/AES-GCM-256

[DarkVision]

embedtls (formerly PolarSSL)

embedtls has GCM support. (Used it in the RAT to create a cipher to recover passwords for Chrome +v80 browsers).

embedtls also allows you to build (DLL) only using the exports you want.

🙃🙃🙃

[neonbytes]

You can do it by using WinApi only (header: <Bcrypt.h>) without linking any library. Try to check this repo on github XShar/Fuck_Chrome_C it performs a chromium password decryption using pure C winapi

Thanks for the info. I was not aware it could be done with winapi only.
It's actually working for Chrome and Edge, but for some reason I cant make it work with Opera.

---

embedtls (formerly PolarSSL)

embedtls has GCM support. (Used it in the RAT to create a cipher to recover passwords for Chrome +v80 browsers).

embedtls also allows you to build (DLL) only using the exports you want.

🙃🙃🙃

Thank you will check it out.

[aude]

Hello everyone,

Is there a way to decrypt AES GCM 256 without statically linking any library?
A pure C++ implementation?
Or using Loadlibrary with a DLL (OpenSSL or another crypto) ?

Thank you

LOL damn, i have the exact opposite question as yours.

Today i made a chrome >80 password recoverer, i used libsodium. BUT i failed at doing with static library, but it directly worked on my first dynamic library test

Help me solve this and i give you my code ;)

I know there is this trick, and i did it, but still it doesnt work.. https://github.com/jedisct1/libsodium/issues/247

All working fine with dynamic DLL, so header and .lib are correctly called i guess..


#define SODIUM_STATIC TRUE

extern "C" {
#include "sodium.h"
}

#pragma comment(lib, "libsodium.lib")


fucking lost so much time on this...

Another point is.. with base64 decode part and libsum the exe is not that small.

---

embedtls (formerly PolarSSL)

embedtls has GCM support. (Used it in the RAT to create a cipher to recover passwords for Chrome +v80 browsers).

embedtls also allows you to build (DLL) only using the exports you want.

🙃🙃🙃

sound pretty good too

[poker]

Hello everyone,

Is there a way to decrypt AES GCM 256 without statically linking any library?
A pure C++ implementation?
Or using Loadlibrary with a DLL (OpenSSL or another crypto) ?

Thank you

Yes, you can implement your own code or instead use LoadLibray & GetProcAddress in order to call desired functions.