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Decrypt Harman AIR SWFs via commandline

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Jindra Petřík
2023-06-25 20:12:57 +02:00
parent b0f90704ef
commit 5fb5ac802e
3 changed files with 90 additions and 33 deletions
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88
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWF.java
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@@ -299,7 +299,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
* ScaleForm GFx
*/
public boolean gfx = false;
/**
* HARMAN encryption
*/
@@ -409,10 +409,9 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
@Internal
private AbcIndexing abcIndex;
private int numAbcIndexDependencies = 0;
private static AbcIndexing playerGlobalAbcIndex;
private static AbcIndexing airGlobalAbcIndex;
@@ -446,7 +445,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
public static AbcIndexing getAirGlobalAbcIndex() {
return airGlobalAbcIndex;
}
public void resetAbcIndex() {
abcIndex = null;
}
@@ -479,19 +478,19 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
public int getNumAbcIndexDependencies() {
return numAbcIndexDependencies;
}
}
public void setAbcIndexDependencies(List<SWF> swfs) {
abcIndex = null;
getAbcIndex();
for (SWF swf:swfs) {
for (Tag tag:swf.tags) {
for (SWF swf : swfs) {
for (Tag tag : swf.tags) {
if (tag instanceof ABCContainerTag) {
abcIndex.addAbc(((ABCContainerTag)tag).getABC());
abcIndex.addAbc(((ABCContainerTag) tag).getABC());
}
}
}
abcIndex.rebuildPkgToObjectsNameMap();
abcIndex.rebuildPkgToObjectsNameMap();
numAbcIndexDependencies = swfs.size();
}
@@ -1125,7 +1124,8 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
private static byte[] getHeaderBytes(SWFCompression compression, boolean gfx) {
return getHeaderBytes(compression, gfx, false);
}
}
private static byte[] getHeaderBytes(SWFCompression compression, boolean gfx, boolean encrypted) {
if (compression == SWFCompression.LZMA_ABC) {
return new byte[]{'A', 'B', 'C'};
@@ -1150,7 +1150,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
ret[1] = 'W';
ret[2] = 'S';
}
if (!gfx && encrypted) {
ret[0] += 32; //to lowercase
}
@@ -1178,7 +1178,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
sos.writeFIXED8(frameRate);
sos.writeUI16(frameCount);
sos.writeTags(includeImported ? getTags() : getLocalTags());
sos.writeTags(includeImported ? getTags() : getLocalTags());
if (hasEndTag) {
sos.writeUI16(0);
}
@@ -1961,6 +1961,40 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
}
}
/**
* Decrypts Harman AIR encryption
* @param is
* @param os
* @return
* @throws IOException
*/
public static boolean decrypt(InputStream is, OutputStream os) throws IOException {
byte[] hdr = new byte[8];
// SWFheader: signature, version and fileSize
if (is.read(hdr) != 8) {
throw new SwfOpenException(AppResources.translate("error.swf.headerTooShort"));
}
decodeHeader(hdr);
switch (hdr[0]) {
case 'c':
case 'z':
case 'f':
HarmanDecryption dec = new HarmanDecryption();
try {
is = dec.decrypt(is, hdr); //Note: this call will uppercase hdr[0]
os.write(hdr);
Helper.copyStream(is, os);
return true;
} catch (IOException | InvalidAlgorithmParameterException | InvalidKeyException | NoSuchAlgorithmException | BadPaddingException | IllegalBlockSizeException | NoSuchPaddingException ex) {
throw new SwfOpenException(AppResources.translate("error.swf.decryptionProblem"));
}
}
return false;
}
private static void decodeLZMAStream(InputStream is, OutputStream os, byte[] lzmaProperties, long fileSize) throws IOException {
Decoder decoder = new Decoder();
if (!decoder.SetDecoderProperties(lzmaProperties)) {
@@ -1986,7 +2020,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
SWFHeader header = new SWFHeader();
header.version = version;
header.fileSize = fileSize;
header.gfx = headerData[1] == 'F' && headerData[2] == 'X';
header.gfx = headerData[1] == 'F' && headerData[2] == 'X';
return header;
}
@@ -2006,7 +2040,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
sos.write(getHeaderBytes(SWFCompression.NONE, header.gfx));
sos.writeUI8(header.version);
sos.writeUI32(fileSize);
switch (hdr[0]) {
case 'c':
case 'z':
@@ -2751,20 +2785,20 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
AbcIndexing ai = getAbcIndex();
Map<Tag, Map<Integer, String>> stringUsageTypesMap = new HashMap<>();
Map<Tag, Set<Integer>> stringUsagesMap = new HashMap<>();
informListeners("deobfuscate", "Getting usages...");
informListeners("deobfuscate", "Getting usages...");
for (Tag tag : getTags()) {
if (tag instanceof ABCContainerTag) {
if (tag instanceof ABCContainerTag) {
Map<Integer, String> stringUsageTypes = new HashMap<>();
Set<Integer> stringUsages = ((ABCContainerTag)tag).getABC().getStringUsages();
((ABCContainerTag)tag).getABC().getStringUsageTypes(stringUsageTypes);
Set<Integer> stringUsages = ((ABCContainerTag) tag).getABC().getStringUsages();
((ABCContainerTag) tag).getABC().getStringUsageTypes(stringUsageTypes);
stringUsageTypesMap.put(tag, stringUsageTypes);
stringUsagesMap.put(tag, stringUsages);
}
}
for (Tag tag : getTags()) {
if (tag instanceof ABCContainerTag) {
((ABCContainerTag) tag).getABC().deobfuscateIdentifiers(stringUsageTypesMap.get(tag),stringUsagesMap.get(tag), deobfuscated, renameType, true);
if (tag instanceof ABCContainerTag) {
((ABCContainerTag) tag).getABC().deobfuscateIdentifiers(stringUsageTypesMap.get(tag), stringUsagesMap.get(tag), deobfuscated, renameType, true);
((ABCContainerTag) tag).getABC().constants.clearCachedMultinames();
((ABCContainerTag) tag).getABC().constants.clearCachedDottedChains();
tag.setModified(true);
@@ -2772,7 +2806,7 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
}
for (Tag tag : getTags()) {
if (tag instanceof ABCContainerTag) {
((ABCContainerTag) tag).getABC().deobfuscateIdentifiers(stringUsageTypesMap.get(tag),stringUsagesMap.get(tag), deobfuscated, renameType, false);
((ABCContainerTag) tag).getABC().deobfuscateIdentifiers(stringUsageTypesMap.get(tag), stringUsagesMap.get(tag), deobfuscated, renameType, false);
((ABCContainerTag) tag).getABC().constants.clearCachedMultinames();
((ABCContainerTag) tag).getABC().constants.clearCachedDottedChains();
tag.setModified(true);
@@ -2790,11 +2824,11 @@ public final class SWF implements SWFContainerItem, Timelined, Openable {
sc.setModified(true);
}
}
deobfuscation.deobfuscateInstanceNames(true, deobfuscated, renameType, getTags(), new HashMap<>());
deobfuscation.deobfuscateInstanceNames(true, deobfuscated, renameType, getTags(), new HashMap<>());
for (Tag tag : getTags()) {
if (tag instanceof ABCContainerTag) {
ai.refreshAbc(((ABCContainerTag)tag).getABC());
ai.refreshAbc(((ABCContainerTag) tag).getABC());
}
}
return deobfuscated.size();