set aStr to "あいうえお"

set theNSString to current application’s NSString’s stringWithString:aStr
set aList to hexDumpString(theNSString) of me

on hexDumpString(theNSString)
　　set theNSData to theNSString’s dataUsingEncoding:(current application’s NSUTF8StringEncoding)
　　set theString to (theNSData’s |description|()’s uppercaseString())
　　
　　–Remove "<" ">" characters in head and tail
　　set tLength to (theString’s |length|()) – 2
　　set aRange to current application’s NSMakeRange(1, tLength)
　　set theString2 to theString’s substringWithRange:aRange
　　
　　–Replace Space Characters
　　set aString to current application’s NSString’s stringWithString:theString2
　　set bString to aString’s stringByReplacingOccurrencesOfString:" " withString:""
　　
　　set aResList to splitString(bString, 2)
　　–> {​​​​​"E3", ​​​​​"81", ​​​​​"82", ​​​​​"E3", ​​​​​"81", ​​​​​"84", ​​​​​"E3", ​​​​​"81", ​​​​​"86", ​​​​​"E3", ​​​​​"81", ​​​​​"88", ​​​​​"E3", ​​​​​"81", ​​​​​"8A"​​​}
　　
　　return aResList
end hexDumpString

–Split NSString in specified aNum characters
on splitString(aText, aNum)
　　set aStr to current application’s NSString’s stringWithString:aText
　　if aStr’s |length|() ≤ aNum then return aText
　　
　　set anArray to current application’s NSMutableArray’s new()
　　set mStr to current application’s NSMutableString’s stringWithString:aStr
　　
　　set aRange to current application’s NSMakeRange(0, aNum)
　　
　　repeat while (mStr’s |length|()) > 0
　　　　if (mStr’s |length|()) < aNum then
　　　　　　anArray’s addObject:(current application’s NSString’s stringWithString:mStr)
　　　　　　mStr’s deleteCharactersInRange:(current application’s NSMakeRange(0, mStr’s |length|()))
　　　　else
　　　　　　anArray’s addObject:(mStr’s substringWithRange:aRange)
　　　　　　mStr’s deleteCharactersInRange:aRange
　　　　end if
　　end repeat
　　
　　return (current application’s NSArray’s arrayWithArray:anArray) as list
end splitString