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HUGE optimalisation in speed & memory usage rc4 crack

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This commit is contained in:
sirjonasxx 2018-04-06 00:18:01 +02:00
parent 4e152dc77f
commit 104353b52c
2 changed files with 104 additions and 6 deletions
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95
src/main/protocol/memory/HabboClient.java
View File

@ -78,6 +78,9 @@ public class HabboClient {
public List<MemorySnippet> createMemorySnippetList () {
refreshMemoryMaps();
return createMemorySnippetList(maps);
}
private static List<MemorySnippet> createMemorySnippetList (List<long[]> maps) {
List<MemorySnippet> result = new ArrayList<>();
for (long[] map : maps) {
@ -89,6 +92,7 @@ public class HabboClient {
}
return result;
}
public void fetchMemory(List<MemorySnippet> snippets) {
for (MemorySnippet snippet : snippets) {
fetchMemory(snippet);
@ -204,4 +208,95 @@ public class HabboClient {
return false;
}
public void printmemmaps() {
refreshMemoryMaps();
System.out.println( "---- MEMORY MAPS:");
for (long[] map : maps) {
long begin = map[0];
long end = map[1];
System.out.println(begin + " - " + end);
}
}
public List<MemorySnippet> createMemorySnippetListForRC4() {
refreshMemoryMaps();
String memoryPath = "/proc/" + PID + "/mem";
List<MemorySnippet> result = new ArrayList<>();
for (long[] map : maps) {
long start = map[0];
long end = map[1];
byte[] data = new byte[(int)(end - start)];
try {
RandomAccessFile raf = new RandomAccessFile(memoryPath, "r");
raf.seek(start);
raf.read(data);
raf.close();
}
catch (Exception e) {
e.printStackTrace();
}
// boolean[] mask = new boolean[256];
int maskCount = 0;
// Map<Integer, Integer> posToRemoveNumber = new HashMap<>();
int[] nToMap = new int[256];
int[] removeMap = new int[256];
for (int i = 0; i < removeMap.length; i++) {
removeMap[i] = -1;
nToMap[i] = -1;
}
int matchStart = -1;
int matchEnd = -1;
for (int i = 0; i < data.length; i+=4) {
int b = (((int)data[i]) + 128) % 256;
int indInMap = (i/4) % 256;
int deletedNumber = removeMap[indInMap];
if (deletedNumber != -1) {
nToMap[deletedNumber] = -1;
maskCount --;
removeMap[indInMap] = -1;
}
if (nToMap[b] == -1) {
maskCount ++;
removeMap[indInMap] = b;
nToMap[b] = indInMap;
}
else {
removeMap[nToMap[b]] = -1;
removeMap[indInMap] = b;
nToMap[b] = indInMap;
}
if (maskCount == 256) {
if (matchStart == -1) {
matchStart = i - 1020;
matchEnd = i;
}
if (matchEnd < i - 1020) {
result.add(new MemorySnippet(start + matchStart, new byte[matchEnd - matchStart + 4]));
matchStart = i - 1020;
}
matchEnd = i;
}
}
if (matchStart != -1) {
result.add(new MemorySnippet(start + matchStart, new byte[matchEnd - matchStart + 4]));
}
}
return result;
}
}

15
src/main/protocol/memory/Rc4Obtainer.java
View File

@ -4,18 +4,16 @@ import main.Cacher;
import main.protocol.HConnection;
import main.protocol.HMessage;
import main.protocol.HPacket;
import main.protocol.TrafficListener;
import main.protocol.crypto.RC4;
import main.protocol.packethandler.IncomingHandler;
import main.protocol.packethandler.OutgoingHandler;
import sun.misc.Cache;
import java.util.List;
import java.util.Random;
public class Rc4Obtainer {
public static final boolean DEBUG = true;
public static final boolean DEBUG = false;
HabboClient client = null;
OutgoingHandler outgoingHandler = null;
@ -79,7 +77,8 @@ public class Rc4Obtainer {
while (foundbuffersize == 0) {
client.pauseProcess();
diff = client.createMemorySnippetList();
// diff = client.createMemorySnippetList();
diff = client.createMemorySnippetListForRC4();
client.fetchMemory(diff);
client.resumeProcess();
this.addedBytes = 0;
@ -129,6 +128,10 @@ public class Rc4Obtainer {
}
}
if (DEBUG) System.out.println("OFFSET RC4 TABLE: " + (snippet.getOffset() + result_start_index));
// client.printmemmaps();
byte[] data = new byte[256]; // dis is the friggin key
for (int i = 0; i < 256; i++) data[i] = wannabeRC4data[i*4 + result_start_index];
@ -156,7 +159,7 @@ public class Rc4Obtainer {
int counter = 0;
RC4 result = null;
while (result == null && counter < 4) {
while (result == null && counter < 4 && result_start_index >= 0) {
byte[] data1 = new byte[256];
for (int i = 0; i < 256; i++) data1[i] = snippet1.getData()[i*4 + result_start_index];
@ -221,7 +224,7 @@ public class Rc4Obtainer {
private List<MemorySnippet> searchForPossibleRC4Tables(List<MemorySnippet> snippets) {
List<MemorySnippet> result;
result = client.differentiate2(snippets, addedBytes, addedBytes * 2, 1028);
result = client.differentiate2(snippets, addedBytes, addedBytes * 2, 1024);
addedBytes = 0;
return result;