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AS3: Deobfuscation of identifier is now optional, acessed via Tools/Deobfuscation menu

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Jindra Pet��k
2012-12-24 10:06:14 +01:00
parent 96d91ceb10
commit 961166a3db
2 changed files with 102 additions and 45 deletions
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trunk/src/com/jpexs/asdec/abc/ABC.java
+72 -41
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@@ -67,6 +67,7 @@ import com.jpexs.asdec.abc.usages.TypeNameMultinameUsage;
import com.jpexs.asdec.helpers.Helper;
import com.jpexs.asdec.helpers.Highlighting;
import java.util.LinkedList;
import java.util.regex.Pattern;
public class ABC {
@@ -83,34 +84,26 @@ public class ABC {
public long stringOffsets[];
public static String IDENT_STRING = " ";
public static final int MINORwithDECIMAL = 17;
private int fixNamesStrategy = 0;
private final int STRATEGY_FIX_NAMES = 1;
private final int STRATEGY_IGNORE = 2;
public static final boolean AUTOINIT_STATIC_VARIABLES = false;
private void fixNameWithStrategy(int index) {
if (fixNamesStrategy == 0) {
if (!isValidName(index, false)) {
int val = JOptionPane.showOptionDialog(null, "Decompiler found unusual name '" + constants.constant_string[index] + "' for a variable/class which can cause problems when decompiling.\r\nDo you want the decompiler to fix it?", "Decompilation", 0, JOptionPane.INFORMATION_MESSAGE, null, new String[]{"Yes", "Yes to all", "No", "No to all"}, "Yes to all");
if (val == JOptionPane.CLOSED_OPTION) {
val = 2; //NO
}
if ((val == 0) || (val == 1)) //YES,YES TO ALL
{
isValidName(index, true);
}
if (val == 1) //YES TO ALL
{
fixNamesStrategy = STRATEGY_FIX_NAMES;
}
if (val == 3) { //NO TO ALL
fixNamesStrategy = STRATEGY_IGNORE;
}
public int deobfuscateIdentifiers()
{
int ret=0;
for(int i=1;i<constants.constant_multiname.length;i++)
{
if(deobfuscateName(constants.constant_multiname[i].name_index))
{
ret++;
}
} else if (fixNamesStrategy == STRATEGY_FIX_NAMES) {
isValidName(index, true);
} else if (fixNamesStrategy == STRATEGY_IGNORE) {
}
for(int i=1;i<constants.constant_namespace.length;i++)
{
if(deobfuscateNameSpace(constants.constant_namespace[i].name_index))
{
ret++;
}
}
return ret;
}
public ABC(InputStream is) throws IOException {
@@ -167,7 +160,6 @@ public class ABC {
constants.constant_namespace = new Namespace[constant_namespace_pool_count];
for (int i = 1; i < constant_namespace_pool_count; i++) { //index 0 not used. Values 1..n-1
constants.constant_namespace[i] = ais.readNamespace();
fixNameWithStrategy(constants.constant_namespace[i].name_index);
}
//constant namespace set
@@ -191,7 +183,6 @@ public class ABC {
constants.constant_multiname = new Multiname[constant_multiname_pool_count];
for (int i = 1; i < constant_multiname_pool_count; i++) { //index 0 not used. Values 1..n-1
constants.constant_multiname[i] = ais.readMultiname();
fixNameWithStrategy(constants.constant_multiname[i].name_index);
}
@@ -801,12 +792,15 @@ public class ABC {
"return", "super", "switch", "this", "throw", "true", "try", "typeof", "use", "var", /*"void",*/ "while",
"with", "dynamic", "default", "final", "in"};
public int unknownCount = 0;
public static final String validFirstCharacters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_";
public static final String validNextCharacters=validFirstCharacters+"0123456789";
public boolean isValidName(int index, boolean autoFix) {
if (index <= 0) {
return true;
public boolean deobfuscateNameSpace(int strIndex) {
if (strIndex <= 0) {
return false;
}
String s = constants.constant_string[index];
String s = constants.constant_string[strIndex];
boolean isValid = true;
boolean isReserved = false;
for (String rw : reservedWords) {
@@ -815,6 +809,45 @@ public class ABC {
isReserved = true;
break;
}
}
if (isValid) {
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) > 127) {
isValid = false;
break;
}
}
}
if (!isValid) {
if (isReserved) {
constants.constant_string[strIndex] = "name_" + s.replace(" ", "_");
} else {
unknownCount++;
constants.constant_string[strIndex] = "_name" + unknownCount;
}
}
return !isValid;
}
public boolean deobfuscateName(int strIndex) {
if (strIndex <= 0) {
return false;
}
String s = constants.constant_string[strIndex];
boolean isValid = true;
boolean isReserved = false;
for (String rw : reservedWords) {
if (rw.equals(s.trim())) {
isValid = false;
isReserved = true;
break;
}
}
Pattern pat=Pattern.compile("^["+Pattern.quote(validFirstCharacters) +"]"+"["+Pattern.quote(validFirstCharacters+validNextCharacters) +"]*$");
if(!pat.matcher(s).matches()){
isValid=false;
}
if (isValid) {
for (int i = 0; i < s.length(); i++) {
@@ -825,17 +858,15 @@ public class ABC {
}
}
if (!isValid) {
if (autoFix) {
if (isReserved) {
constants.constant_string[index] = "name_" + s.replace(" ", "_");
} else {
unknownCount++;
constants.constant_string[index] = "_name" + unknownCount;
}
}
if (!isValid) {
if (isReserved) {
constants.constant_string[strIndex] = "name_" + s.replace(" ", "_");
} else {
unknownCount++;
constants.constant_string[strIndex] = "_name" + unknownCount;
}
}
return isValid;
return !isValid;
}
private void checkMultinameUsedInMethod(int multinameIndex, int methodInfo, List<MultinameUsage> ret, int classIndex, int traitIndex, boolean isStatic, boolean isInitializer,Traits traits,int parentTraitIndex) {