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DottedChains in identifier deobfuscation

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This commit is contained in:
honfika@gmail.com
2015-07-16 13:20:23 +02:00
parent 36e7bdbaee
commit a911196575
9 changed files with 97 additions and 103 deletions
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79
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/IdentifiersDeobfuscation.java
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@@ -21,12 +21,13 @@ 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.helpers.Cache;
import com.jpexs.helpers.Helper;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Random;
import java.util.regex.Pattern;
@@ -104,26 +105,27 @@ public class IdentifiersDeobfuscation {
return false;
}
private String fooString(boolean as3, HashMap<String, String> deobfuscated, String orig, boolean firstUppercase, int rndSize) {
private String fooString(boolean as3, HashMap<DottedChain, DottedChain> deobfuscated, String orig, boolean firstUppercase, int rndSize) {
boolean exists;
String ret;
loopfoo:
do {
exists = false;
int len = 3 + rnd.nextInt(rndSize - 3);
ret = "";
StringBuilder sb = new StringBuilder(len);
for (int i = 0; i < len; i++) {
String c = "";
char c;
if ((i % 2) == 0) {
c = "" + FOO_CHARACTERS.charAt(rnd.nextInt(FOO_CHARACTERS.length()));
c = FOO_CHARACTERS.charAt(rnd.nextInt(FOO_CHARACTERS.length()));
} else {
c = "" + FOO_JOIN_CHARACTERS.charAt(rnd.nextInt(FOO_JOIN_CHARACTERS.length()));
c = FOO_JOIN_CHARACTERS.charAt(rnd.nextInt(FOO_JOIN_CHARACTERS.length()));
}
if (i == 0 && firstUppercase) {
c = c.toUpperCase(Locale.ENGLISH);
c = Character.toUpperCase(c);
}
ret += c;
sb.append(c);
}
ret = sb.toString();
if (allVariableNamesStr.contains(ret)) {
exists = true;
rndSize += 1;
@@ -134,7 +136,7 @@ public class IdentifiersDeobfuscation {
rndSize += 1;
continue;
}
if (deobfuscated.containsValue(ret)) {
if (deobfuscated.containsValue(DottedChain.parse(ret))) {
exists = true;
rndSize += 1;
continue;
@@ -143,7 +145,7 @@ public class IdentifiersDeobfuscation {
return ret;
}
public void deobfuscateInstanceNames(boolean as3, HashMap<String, String> namesMap, RenameType renameType, List<Tag> tags, Map<String, String> selected) {
public void deobfuscateInstanceNames(boolean as3, HashMap<DottedChain, DottedChain> namesMap, RenameType renameType, List<Tag> tags, Map<DottedChain, DottedChain> selected) {
for (Tag t : tags) {
if (t instanceof DefineSpriteTag) {
deobfuscateInstanceNames(as3, namesMap, renameType, ((DefineSpriteTag) t).subTags, selected);
@@ -170,50 +172,38 @@ public class IdentifiersDeobfuscation {
}
}
public String deobfuscatePackage(boolean as3, String pkg, HashMap<String, String> namesMap, RenameType renameType, Map<String, String> selected) {
public DottedChain deobfuscatePackage(boolean as3, DottedChain pkg, HashMap<DottedChain, DottedChain> namesMap, RenameType renameType, Map<DottedChain, DottedChain> selected) {
if (namesMap.containsKey(pkg)) {
return namesMap.get(pkg);
}
String[] parts = null;
if (pkg.contains(".")) {
parts = pkg.split("\\.");
} else {
parts = new String[]{pkg};
}
StringBuilder ret = new StringBuilder();
List<String> ret = new ArrayList<>(pkg.size());
boolean isChanged = false;
for (int p = 0; p < parts.length; p++) {
if (p > 0) {
ret.append(".");
}
String partChanged = deobfuscateName(as3, parts[p], false, "package", namesMap, renameType, selected);
for (int p = 0; p < pkg.size(); p++) {
String part = pkg.get(p);
String partChanged = deobfuscateName(as3, part, false, "package", namesMap, renameType, selected);
if (partChanged != null) {
ret.append(partChanged);
ret.add(partChanged);
isChanged = true;
} else {
ret.append(parts[p]);
ret.add(part);
}
}
if (isChanged) {
String retStr = ret.toString();
namesMap.put(pkg, retStr);
return retStr;
DottedChain chain = new DottedChain(ret);
namesMap.put(pkg, chain);
return chain;
}
return null;
}
public String deobfuscateNameWithPackage(boolean as3, String n, HashMap<String, String> namesMap, RenameType renameType, Map<String, String> selected) {
String pkg = null;
String name = "";
if (n.contains(".")) {
pkg = n.substring(0, n.lastIndexOf('.'));
name = n.substring(n.lastIndexOf('.') + 1);
} else {
name = n;
}
public String deobfuscateNameWithPackage(boolean as3, String n, HashMap<DottedChain, DottedChain> namesMap, RenameType renameType, Map<DottedChain, DottedChain> selected) {
DottedChain nChain = DottedChain.parse(n);
DottedChain pkg = nChain.getWithoutLast();
String name = nChain.getLast();
boolean changed = false;
if ((pkg != null) && (!pkg.isEmpty())) {
String changedPkg = deobfuscatePackage(as3, pkg, namesMap, renameType, selected);
DottedChain changedPkg = deobfuscatePackage(as3, pkg, namesMap, renameType, selected);
if (changedPkg != null) {
changed = true;
pkg = changedPkg;
@@ -258,22 +248,23 @@ public class IdentifiersDeobfuscation {
return false;
}
public String deobfuscateName(boolean as3, String s, boolean firstUppercase, String usageType, HashMap<String, String> namesMap, RenameType renameType, Map<String, String> selected) {
public String deobfuscateName(boolean as3, String s, boolean firstUppercase, String usageType, HashMap<DottedChain, DottedChain> namesMap, RenameType renameType, Map<DottedChain, DottedChain> selected) {
boolean isValid = true;
if (usageType == null) {
usageType = "name";
}
DottedChain sChain = DottedChain.parse(s);
if (selected != null) {
if (selected.containsKey(s)) {
return selected.get(s);
if (selected.containsKey(sChain)) {
return selected.get(sChain).toRawString();
}
}
isValid = isValidName(as3, s);
if (!isValid) {
if (namesMap.containsKey(s)) {
return namesMap.get(s);
if (namesMap.containsKey(sChain)) {
return namesMap.get(sChain).toRawString();
} else {
Integer cnt = typeCounts.get(usageType);
if (cnt == null) {
@@ -294,7 +285,7 @@ public class IdentifiersDeobfuscation {
} else if (renameType == RenameType.RANDOMWORD) {
ret = fooString(as3, namesMap, s, firstUppercase, DEFAULT_FOO_SIZE);
}
namesMap.put(s, ret);
namesMap.put(DottedChain.parse(s), DottedChain.parse(ret));
return ret;
}
}