使用jd-gui.exe反编译jar，代码很简单，两个数进行异或计算得到flag
str_one = 0x4b64ca12ace755516c178f72d05d7061 # 100215427896080122581550790036680437857
str_two = 0xecd44646cfe5994ebeb35bf922e25dba
flag = ''
flag = str(hex(str_one ^ str_two)).replace("0x", '').replace("L", "")
print flag
#a7b08c546302cc1fd2a4d48bf2bf2ddb