data: add random_shellcode source files too

lab_results/random_shellcode/reverse_hex_string_work.c

@@ -0,0 +1,49 @@
+#include <windows.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+int main(void) {
+	
+
+	char reversed_hex_string[] = "0x0,23x0,0x0,23x0,0x0,f6x0,0x0,77x0,0x0,a7x0,0x0,37x0,0x0,e6x0,0x0,96x0,0x0,56x0,0x0,f6x0,0x0,77x0,0x0,a7x0,0x0,37x0,0x0,e6x0,0x0,96x0,0x0,56x0,0x0,47x0,0x0,37x0,0x0,56x0,0x0,47x0,efx0,ffx0";
+unsigned int shellcode_len = 42;
+
+
+	// reverse the string
+	char* hex_string = _strrev(reversed_hex_string);
+	printf("Reversed hex string: %s\n", hex_string);
+
+	// declare a new shellcode byte array
+	char shellcode[sizeof(reversed_hex_string)] = { 0 };
+	
+	// define an index to keep track of where we're at
+	int idx = 0;
+	int count = 0;
+	const int MAX_TOKENS = sizeof(reversed_hex_string);
+	char* next_token = NULL;
+	char* token = strtok_s(hex_string, ",", &next_token);
+	while (token != NULL && count < MAX_TOKENS) {
+		shellcode[count++] = strtol(token, NULL, 16);
+		token = strtok_s(NULL, ",", &next_token);
+	}
+
+	idx = 0;
+	while ( idx < shellcode_len)
+	{
+		if (idx == (shellcode_len - 1) )
+		{
+			printf("0x%02x ", (unsigned char)shellcode[idx]);
+		}
+		else
+		{
+			printf("0x%02x, ", (unsigned char)shellcode[idx]);
+		}
+		idx++;
+	}
+
+    return 0;
+	
+}
+