Description: Change the encryption on the client and server to block unwanted clients.
Difficulty: -1
Assumed Knowledge: Basic number changing, Memory.
Tested Server: Winterloves.
Files/Classes Modified: You will need a client and a server for this to work
Procedure
Step 1: For this to work you need to have your own personal client.
Open class17 client side to open the clients encryption.
It should look like this
Step 2: All there is to do is change a variable around in that code.
In Cryption.java server side change the exact same number!
The best place to change is this method
(It must be the same as Cliet side!)
NOTE: Remember which one you changed!
In my client and server i changed
To
I tested it with four clients and not one could connect with me
Step 3: Now is any client tries to connect to the server without the same encryption the client will get a t1 error and disconnect.
Its that simple
Credits: Jagex for the client.
Difficulty: -1
Assumed Knowledge: Basic number changing, Memory.
Tested Server: Winterloves.
Files/Classes Modified: You will need a client and a server for this to work
Procedure
Step 1: For this to work you need to have your own personal client.
Open class17 client side to open the clients encryption.
It should look like this
PHP:
public final class Class17
{
public Class17(int i, int ai[])
{
anInt332 = -436;
anInt333 = -431;
anIntArray336 = new int[256];
anIntArray335 = new int[256];
for(int j = 0; j < ai.length; j++)
anIntArray335[j] = ai[j];
if(i >= 0)
anInt333 = -242;
method248();
}
public final int method246()
{
if(anInt334-- == 0)
{
method247();
anInt334 = 255;
}
return anIntArray335[anInt334];
}
private final void method247()
{
anInt338 += ++anInt339;
for(int i = 0; i < 256; i++)
{
int j = anIntArray336[i];
if((i & 3) == 0)
anInt337 ^= anInt337 << 13;
else
if((i & 3) == 1)
anInt337 ^= anInt337 >>> 6;
else
if((i & 3) == 2)
anInt337 ^= anInt337 << 2;
else
if((i & 3) == 3)
anInt337 ^= anInt337 >>> 16;
anInt337 += anIntArray336[i + 128 & 0xff];
int k;
anIntArray336[i] = k = anIntArray336[(j & 0x3fc) >> 2] + anInt337 + anInt338;
anIntArray335[i] = anInt338 = anIntArray336[(k >> 8 & 0x3fc) >> 2] + j;
}
}
private final void method248()
{
int i1;
int j1;
int k1;
int l1;
int i2;
int j2;
int k2;
int l = i1 = j1 = k1 = l1 = i2 = j2 = k2 = 0x9e3779b9;
for(int i = 0; i < 4; i++)
{
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
}
for(int j = 0; j < 256; j += 8)
{
l += anIntArray335[j];
i1 += anIntArray335[j + 1];
j1 += anIntArray335[j + 2];
k1 += anIntArray335[j + 3];
l1 += anIntArray335[j + 4];
i2 += anIntArray335[j + 5];
j2 += anIntArray335[j + 6];
k2 += anIntArray335[j + 7];
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
anIntArray336[j] = l;
anIntArray336[j + 1] = i1;
anIntArray336[j + 2] = j1;
anIntArray336[j + 3] = k1;
anIntArray336[j + 4] = l1;
anIntArray336[j + 5] = i2;
anIntArray336[j + 6] = j2;
anIntArray336[j + 7] = k2;
}
for(int k = 0; k < 256; k += 8)
{
l += anIntArray336[k];
i1 += anIntArray336[k + 1];
j1 += anIntArray336[k + 2];
k1 += anIntArray336[k + 3];
l1 += anIntArray336[k + 4];
i2 += anIntArray336[k + 5];
j2 += anIntArray336[k + 6];
k2 += anIntArray336[k + 7];
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
anIntArray336[k] = l;
anIntArray336[k + 1] = i1;
anIntArray336[k + 2] = j1;
anIntArray336[k + 3] = k1;
anIntArray336[k + 4] = l1;
anIntArray336[k + 5] = i2;
anIntArray336[k + 6] = j2;
anIntArray336[k + 7] = k2;
}
method247();
anInt334 = 256;
}
private int anInt332;
private int anInt333;
private int anInt334;
private int anIntArray335[];
private int anIntArray336[];
private int anInt337;
private int anInt338;
private int anInt339;
}Step 2: All there is to do is change a variable around in that code.
In Cryption.java server side change the exact same number!
The best place to change is this method
PHP:
public void initializeKeySet()
{
int i1;
int j1;
int k1;
int l1;
int i2;
int j2;
int k2;
int l = i1 = j1 = k1 = l1 = i2 = j2 = k2 = 0x9e3779b9;
for(int i = 0; i < 4; i++)
{
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
}
for(int j = 0; j < 256; j += 8)
{
l += keySetArray[j];
i1 += keySetArray[j + 1];
j1 += keySetArray[j + 2];
k1 += keySetArray[j + 3];
l1 += keySetArray[j + 4];
i2 += keySetArray[j + 5];
j2 += keySetArray[j + 6];
k2 += keySetArray[j + 7];
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
cryptArray[j] = l;
cryptArray[j + 1] = i1;
cryptArray[j + 2] = j1;
cryptArray[j + 3] = k1;
cryptArray[j + 4] = l1;
cryptArray[j + 5] = i2;
cryptArray[j + 6] = j2;
cryptArray[j + 7] = k2;
}
for(int k = 0; k < 256; k += 8)
{
l += cryptArray[k];
i1 += cryptArray[k + 1];
j1 += cryptArray[k + 2];
k1 += cryptArray[k + 3];
l1 += cryptArray[k + 4];
i2 += cryptArray[k + 5];
j2 += cryptArray[k + 6];
k2 += cryptArray[k + 7];
l ^= i1 << 11;
k1 += l;
i1 += j1;
i1 ^= j1 >>> 2;
l1 += i1;
j1 += k1;
j1 ^= k1 << 8;
i2 += j1;
k1 += l1;
k1 ^= l1 >>> 16;
j2 += k1;
l1 += i2;
l1 ^= i2 << 10;
k2 += l1;
i2 += j2;
i2 ^= j2 >>> 4;
l += i2;
j2 += k2;
j2 ^= k2 << 8;
i1 += j2;
k2 += l;
k2 ^= l >>> 9;
j1 += k2;
l += i1;
cryptArray[k] = l;
cryptArray[k + 1] = i1;
cryptArray[k + 2] = j1;
cryptArray[k + 3] = k1;
cryptArray[k + 4] = l1;
cryptArray[k + 5] = i2;
cryptArray[k + 6] = j2;
cryptArray[k + 7] = k2;
}
generateNextKeySet();
keyArrayIdx = 256;
}NOTE: Remember which one you changed!
In my client and server i changed
PHP:
int l = i1 = j1 = k1 = l1 = i2 = j2 = k2 = 0x9e3779b9;
PHP:
int l = i1 = j1 = k1 = l1 = i2 = j2 = k2 = 0x9e3769b9;I tested it with four clients and not one could connect with me
Step 3: Now is any client tries to connect to the server without the same encryption the client will get a t1 error and disconnect.
Its that simple
Credits: Jagex for the client.
