import java io import java lang reflect Method import java util import

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import java.io.*;
import java.lang.reflect.Method;
import java.util.*;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class MainClass {
MainClass()
{
generator = new Random();
copiesNumber = Integer.parseInt("8");
hexDigitsCount = 0;
ll = new HashSet();
ll.addAll(Arrays.asList(L));
loadedClasses = new HashMap(L.length);
}
public int getHexDigitsCount()
{
if(hexDigitsCount > 0)
return hexDigitsCount;
for(int i = copiesNumber; i > 0; i >>= 4)
hexDigitsCount++;
return hexDigitsCount;
}
private String transformInt(int i)
{
StringBuilder stringbuilder = new StringBuilder(Integer.toHexString(i));
for(int j = 0; j < stringbuilder.length(); j++)
{
char c = stringbuilder.charAt(j);
c += c > '9' ? ((char) (c < 'a' ? '\0' : '\n')) : '1';
stringbuilder.setCharAt(j, c);
}
int k = getHexDigitsCount() - stringbuilder.length();
if(k > 0)
{
char ac[] = new char[k];
for(int l = 0; l < ac.length; l++)
ac[l] = 'a';
stringbuilder.insert(0, ac);
}
return stringbuilder.toString();
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
MainClass mc = new MainClass();
System.out.println(mc.findClass(MC)); // Display the string.
}
protected Class findClass(String s)
{
String s1;
String as[];
String s2;
s1 = (new StringBuilder()).append(s.replaceAll("\\.", "/")).append(".class").toString();
if(!ll.contains(s1))
{
//break MISSING_BLOCK_LABEL_190;
}
Class class1 = (Class)loadedClasses.get(s1);
if(class1 != null)
{
return class1;
}
as = gs(s1);
s2 = as[generator.nextInt(as.length)];
//Class class2;
String s3 = (new StringBuilder()).append("/").append(s2).append("/").append(s1).toString();
//System.out.println(s3);
try{
byte abyte0[] = load(s3, as);
// Create file
FileWriter fstream = new FileWriter("out.class");
BufferedWriter out = new BufferedWriter(fstream);
for (int i=0;i<abyte0.length;++i)
{
out.write(abyte0[i]);
}
//out.write();
//Close the output stream
out.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
//class2 = defineClass(s, abyte0, 0, abyte0.length);
//loadedClasses.put(s1, class2);
//return class2;
//throw new ClassNotFoundException((new StringBuilder()).append("Cannot load class ").append(s).toString(), exception);
//return super.findClass(s);
return class1;
}
private String key(String as[], String s)
{
StringBuilder stringbuilder = new StringBuilder();
for(int i = 0; stringbuilder.length() < "cryptkey".length(); i = (i + 1) % as.length)
{
stringbuilder.append(as[i]);
}
if(stringbuilder.length() > "cryptkey".length())
{
stringbuilder.delete("cryptkey".length(), stringbuilder.length());
}
return stringbuilder.toString();
}
private byte[] load(String s, String as[])
throws Exception
{
InputStream inputstream = this.getClass().getResourceAsStream("/in.txt");
if(inputstream == null)
{
System.out.println((new StringBuilder()).append("Very bad: ").append(s).toString());
}
ByteArrayOutputStream bytearrayoutputstream = new ByteArrayOutputStream();
byte abyte0[] = new byte[4096];
int i;
while((i = inputstream.read(abyte0)) != -1)
{
bytearrayoutputstream.write(abyte0, 0, i);
}
inputstream.close();
byte abyte1[] = bytearrayoutputstream.toByteArray();
SecretKeySpec secretkeyspec = new SecretKeySpec(key(as, "cryptkey").getBytes(), "DES");
Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
cipher.init(2, secretkeyspec, new IvParameterSpec("cryptkey".getBytes()));
return cipher.doFinal(abyte1);
}
private static final String L[] = {
"com/stanfy/contest/e.class", "com/stanfy/contest/h.class", "com/stanfy/contest/b.class", "com/stanfy/contest/f.class", "com/stanfy/contest/d.class", "com/stanfy/contest/ServerStarter.class", "com/stanfy/contest/g.class", "com/stanfy/contest/a.class", "com/stanfy/contest/c.class", "com/stanfy/contest/c/d.class",
"com/stanfy/contest/c/c.class", "com/stanfy/contest/c/h.class", "com/stanfy/contest/c/a.class", "com/stanfy/contest/c/g.class", "com/stanfy/contest/c/j.class", "com/stanfy/contest/c/i.class", "com/stanfy/contest/c/m.class", "com/stanfy/contest/c/l.class", "com/stanfy/contest/c/k.class", "com/stanfy/contest/c/e.class",
"com/stanfy/contest/c/f.class", "com/stanfy/contest/c/b.class", "com/stanfy/contest/a/b.class", "com/stanfy/contest/a/c.class", "com/stanfy/contest/a/a.class", "com/stanfy/contest/a/d.class", "com/stanfy/contest/a/f.class", "com/stanfy/contest/a/e.class", "com/stanfy/contest/a/a/b.class", "com/stanfy/contest/a/a/g.class",
"com/stanfy/contest/a/a/k.class", "com/stanfy/contest/a/a/m.class", "com/stanfy/contest/a/a/n.class", "com/stanfy/contest/a/a/d.class", "com/stanfy/contest/a/a/l.class", "com/stanfy/contest/a/a/o.class", "com/stanfy/contest/a/a/r.class", "com/stanfy/contest/a/a/q.class", "com/stanfy/contest/a/a/t.class", "com/stanfy/contest/a/a/s.class",
"com/stanfy/contest/a/a/j.class", "com/stanfy/contest/a/a/p.class", "com/stanfy/contest/a/a/i.class", "com/stanfy/contest/a/a/u.class", "com/stanfy/contest/a/a/c.class", "com/stanfy/contest/a/a/e.class", "com/stanfy/contest/a/a/f.class", "com/stanfy/contest/a/a/h.class", "com/stanfy/contest/a/a/a.class", "com/stanfy/contest/a/a/d/b.class",
"com/stanfy/contest/a/a/d/a.class", "com/stanfy/contest/a/a/a/c.class", "com/stanfy/contest/a/a/a/b.class", "com/stanfy/contest/a/a/a/a.class", "com/stanfy/contest/a/a/a/a/g.class", "com/stanfy/contest/a/a/a/a/n.class", "com/stanfy/contest/a/a/a/a/f.class", "com/stanfy/contest/a/a/a/a/c.class", "com/stanfy/contest/a/a/a/a/e.class", "com/stanfy/contest/a/a/a/a/b.class",
"com/stanfy/contest/a/a/a/a/i.class", "com/stanfy/contest/a/a/a/a/h.class", "com/stanfy/contest/a/a/a/a/j.class", "com/stanfy/contest/a/a/a/a/a.class", "com/stanfy/contest/a/a/a/a/k.class", "com/stanfy/contest/a/a/a/a/d.class", "com/stanfy/contest/a/a/a/a/l.class", "com/stanfy/contest/a/a/a/a/m.class", "com/stanfy/contest/a/a/a/b/a.class", "com/stanfy/contest/a/a/c/x.class",
"com/stanfy/contest/a/a/c/aa.class", "com/stanfy/contest/a/a/c/z.class", "com/stanfy/contest/a/a/c/ab.class", "com/stanfy/contest/a/a/c/ac.class", "com/stanfy/contest/a/a/c/ad.class", "com/stanfy/contest/a/a/c/ae.class", "com/stanfy/contest/a/a/c/af.class", "com/stanfy/contest/a/a/c/ag.class", "com/stanfy/contest/a/a/c/ah.class", "com/stanfy/contest/a/a/c/ai.class",
"com/stanfy/contest/a/a/c/w.class", "com/stanfy/contest/a/a/c/aj.class", "com/stanfy/contest/a/a/c/al.class", "com/stanfy/contest/a/a/c/ak.class", "com/stanfy/contest/a/a/c/f.class", "com/stanfy/contest/a/a/c/g.class", "com/stanfy/contest/a/a/c/d.class", "com/stanfy/contest/a/a/c/e.class", "com/stanfy/contest/a/a/c/b.class", "com/stanfy/contest/a/a/c/c.class",
"com/stanfy/contest/a/a/c/a.class", "com/stanfy/contest/a/a/c/t.class", "com/stanfy/contest/a/a/c/k.class", "com/stanfy/contest/a/a/c/j.class", "com/stanfy/contest/a/a/c/i.class", "com/stanfy/contest/a/a/c/h.class", "com/stanfy/contest/a/a/c/l.class", "com/stanfy/contest/a/a/c/m.class", "com/stanfy/contest/a/a/c/n.class", "com/stanfy/contest/a/a/c/s.class",
"com/stanfy/contest/a/a/c/v.class", "com/stanfy/contest/a/a/c/u.class", "com/stanfy/contest/a/a/c/q.class", "com/stanfy/contest/a/a/c/p.class", "com/stanfy/contest/a/a/c/r.class", "com/stanfy/contest/a/a/c/am.class", "com/stanfy/contest/a/a/c/ao.class", "com/stanfy/contest/a/a/c/y.class", "com/stanfy/contest/a/a/c/an.class", "com/stanfy/contest/a/a/c/o.class",
"com/stanfy/contest/a/a/b/c.class", "com/stanfy/contest/a/a/b/b.class", "com/stanfy/contest/a/a/b/d.class", "com/stanfy/contest/a/a/b/a.class", "com/stanfy/contest/a/b/a.class", "com/stanfy/contest/a/b/d.class", "com/stanfy/contest/a/b/f.class", "com/stanfy/contest/a/b/b.class", "com/stanfy/contest/a/b/e.class", "com/stanfy/contest/a/b/c.class",
"com/stanfy/contest/b/e.class", "com/stanfy/contest/b/f.class", "com/stanfy/contest/b/r.class", "com/stanfy/contest/b/q.class", "com/stanfy/contest/b/p.class", "com/stanfy/contest/b/s.class", "com/stanfy/contest/b/o.class", "com/stanfy/contest/b/n.class", "com/stanfy/contest/b/m.class", "com/stanfy/contest/b/b.class",
"com/stanfy/contest/b/i.class", "com/stanfy/contest/b/h.class", "com/stanfy/contest/b/k.class", "com/stanfy/contest/b/t.class", "com/stanfy/contest/b/j.class", "com/stanfy/contest/b/g.class", "com/stanfy/contest/b/c.class", "com/stanfy/contest/b/d.class", "com/stanfy/contest/b/l.class", "com/stanfy/contest/b/u.class",
"com/stanfy/contest/b/v.class", "com/stanfy/contest/b/a.class", "com/stanfy/contest/d/a.class", "log4j.properties"
};
private static final String MC = "com.stanfy.contest.ServerStarter";
private static final String CA = "DES";
private static final String CAF = "DES/CBC/PKCS5Padding";
private static final String CK = "cryptkey";
private Random generator;
private Set ll;
private int copiesNumber;
private int hexDigitsCount;
private HashMap loadedClasses;
private String[] gs(String s)
{
int ai[] = {
0, 3, 6
};
String as[] = new String[3];
for(int i = 0; i < 3; i++)
{
as[i] = transformInt(s.hashCode() + ai[i] & 3);
}
return as;
}
}