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Replacements table in AS1/2,

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not much useful since eval() is used in most cases
This commit is contained in:
Jindra Petřík
2025-07-26 12:20:21 +02:00
parent 55f43b5390
commit 55ee4586de
15 changed files with 177 additions and 84 deletions
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libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/IdentifiersDeobfuscation.java
+102 -5
View File
@@ -17,12 +17,22 @@
package com.jpexs.decompiler.flash;
import com.jpexs.decompiler.flash.abc.RenameType;
import com.jpexs.decompiler.flash.abc.avm2.AVM2Deobfuscation;
import com.jpexs.decompiler.flash.abc.avm2.parser.AVM2ParseException;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.ActionScriptLexer;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.ParsedSymbol;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.SymbolType;
import com.jpexs.decompiler.flash.asdoc.ActionScriptDocParser;
import com.jpexs.decompiler.flash.asdoc.AsDocComment;
import com.jpexs.decompiler.flash.asdoc.AsDocTag;
import com.jpexs.decompiler.flash.configuration.Configuration;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.flash.tags.DefineSpriteTag;
import com.jpexs.decompiler.flash.tags.Tag;
import com.jpexs.decompiler.flash.tags.base.PlaceObjectTypeTag;
import com.jpexs.decompiler.graph.DottedChain;
import com.jpexs.decompiler.graph.model.DocCommentItem;
import com.jpexs.decompiler.graph.model.LocalData;
import com.jpexs.helpers.Cache;
import com.jpexs.helpers.Helper;
import java.util.ArrayList;
@@ -34,6 +44,7 @@ import java.util.Map;
import java.util.Random;
import java.util.Set;
import java.util.regex.Pattern;
import natorder.NaturalOrderComparator;
/**
* Identifiers deobfuscation.
@@ -42,6 +53,11 @@ import java.util.regex.Pattern;
*/
public class IdentifiersDeobfuscation {
/**
* Prefix to be put instead of obfuscated name. It will by suffixed with a number.
*/
public static final String SAFE_STR_PREFIX = "_SafeStr_";
/**
* Random number generator.
*/
@@ -528,11 +544,27 @@ public class IdentifiersDeobfuscation {
/**
* Appends obfuscated identifier.
*
* @param s String
* @param swf SWF
* @param used Used deobfuscations
* @param s String
* @param writer Writer
* @return Writer
*/
public static GraphTextWriter appendObfuscatedIdentifier(String s, GraphTextWriter writer) {
public static GraphTextWriter appendObfuscatedIdentifier(SWF swf, Set<String> used, String s, GraphTextWriter writer) {
Map<String, String> map = new LinkedHashMap<>();
if (Configuration.useSafeStr.get() && swf != null) {
map = swf.getObfuscatedIdentifiersMap();
used.add(s);
if (map.containsKey(s)) {
writer.append(map.get(s));
} else {
String ret = IdentifiersDeobfuscation.SAFE_STR_PREFIX + map.size();
map.put(s, ret);
writer.append(ret);
}
return writer;
}
writer.append("\u00A7");
escapeOIdentifier(s, writer);
return writer.append("\u00A7");
@@ -554,15 +586,22 @@ public class IdentifiersDeobfuscation {
return "";
}
if (Configuration.useSafeStr.get() && as3) {
Map<String, String> map = new LinkedHashMap<>();
if (Configuration.useSafeStr.get()) {
if (swf != null) {
map = swf.getObfuscatedIdentifiersMap();
}
Map<String, String> map = swf == null ? new LinkedHashMap<>() : swf.getAs3ObfuscatedIdentifiers();
if (map.containsKey(s)) {
used.add(s);
return map.get(s);
}
}
if (s.startsWith("\u00A7") && s.endsWith("\u00A7")) { // Assuming already printed - TODO:detect better
return s;
}
@@ -584,6 +623,13 @@ public class IdentifiersDeobfuscation {
return s;
}
if (Configuration.useSafeStr.get()) {
String ret = IdentifiersDeobfuscation.SAFE_STR_PREFIX + map.size();
map.put(s, ret);
used.add(s);
return ret;
}
String ret = "\u00A7" + escapeOIdentifier(s) + "\u00A7";
nameCache.put(s, ret);
return ret;
@@ -744,4 +790,55 @@ public class IdentifiersDeobfuscation {
as2NameCache.clear();
as3NameCache.clear();
}
@SuppressWarnings("unchecked")
public static GraphTextWriter writeCurrentScriptReplacements(GraphTextWriter writer, Set<String> usedDeobfuscations, SWF swf) {
if (!usedDeobfuscations.isEmpty()) {
writer.newLine();
List<String> commentLines = new ArrayList<>();
Map<String, String> fullMap = swf.getObfuscatedIdentifiersMap();
int i = 0;
for (String obfuscated : usedDeobfuscations) {
String deobfuscated = fullMap.get(obfuscated);
commentLines.add("@identifier " + deobfuscated + " = \"" + Helper.escapePCodeString(obfuscated) + "\"");
i++;
}
commentLines.sort(new NaturalOrderComparator());
commentLines.add(0, AppResources.translate("decompilationWarning.obfuscatedIdentifiers"));
commentLines.add(1, AppResources.translate("decompilationWarning.replacementsFollow"));
String[] commentLinesArr = commentLines.toArray(new String[commentLines.size()]);
new DocCommentItem(commentLinesArr).appendTo(writer, LocalData.empty);
}
return writer;
}
public static Map<String, String> getReplacementsFromDoc(String s) throws Exception {
ActionScriptDocParser asd = new ActionScriptDocParser();
List<AsDocComment> comments = asd.parse(s);
Map<String, String> replacements = new LinkedHashMap<>();
for (AsDocComment comment:comments) {
for (AsDocTag tag : comment.tags) {
if ("identifier".equals(tag.tagName)) {
String tagText = tag.tagText;
if (tagText != null && !tagText.isEmpty()) {
ActionScriptLexer lexer = new ActionScriptLexer(tagText);
ParsedSymbol symb = lexer.yylex();
if (symb.type != SymbolType.IDENTIFIER) {
throw new Exception("Invalid @identifier AsDoc tag value. Identifier expected.");
}
ParsedSymbol symb2 = lexer.yylex();
if (symb2.type != SymbolType.ASSIGN) {
throw new Exception("Invalid @identifier AsDoc tag value. Assign expected.");
}
ParsedSymbol symb3 = lexer.yylex();
if (symb3.type != SymbolType.STRING) {
throw new Exception("Invalid @identifier AsDoc tag value. String expected.");
}
replacements.put(symb.value.toString(), symb3.value.toString());
}
}
}
}
return replacements;
}
}