Tags: java jvm reverse
Rating:
# JVM - Reversing 25
```
Bytecodes everywhere, reverse them.
Attachment
rev25_3100aa76fca4432f.zip
```
Running the "binary" isn't very illustrative, but JD-GUI gives us this:
```
public class EKO
{
public static void main(String[] paramArrayOfString)
{
int i = 0;
for (int j = 0; j < 1337; j++) {
i += j;
}
String str = "EKO{" + i + "}";
}
}
```
So the flag is the sum 0 + 1 + ... + 1336, which is given by n (n + 1) / 2, where n is 1336 (remember Calc II?). So the flag is `EKO{893116}`. Cheers!
