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Rename locals and fix problem with huge strings

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de4dot 2012-03-27 02:24:53 +02:00
parent 6e188aa7e0
commit d1e499454e
1 changed files with 4 additions and 4 deletions
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8
de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs
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@ -690,17 +690,17 @@ namespace de4dot.code.deobfuscators.MaxtoCode {
} }
int usHeapOffsetOrig = usHeapOffset; int usHeapOffsetOrig = usHeapOffset;
int len = DeobUtils.readVariableLengthInt32(fileData, ref usHeapOffset); int stringDataLength = DeobUtils.readVariableLengthInt32(fileData, ref usHeapOffset);
int usHeapOffsetString = usHeapOffset; int usHeapOffsetString = usHeapOffset;
int stringLength = len - (usHeapOffset - usHeapOffsetOrig); int encryptedLength = stringDataLength - (usHeapOffset - usHeapOffsetOrig == 1 ? 1 : 2);
for (int i = 0; i < stringLength; i++) { for (int i = 0; i < encryptedLength; i++) {
byte k = mcKey.readByte(mcKeyOffset++ % 0x2000); byte k = mcKey.readByte(mcKeyOffset++ % 0x2000);
fileData[usHeapOffset] = rolb((byte)(fileData[usHeapOffset] ^ k), 3); fileData[usHeapOffset] = rolb((byte)(fileData[usHeapOffset] ^ k), 3);
usHeapOffset++; usHeapOffset++;
} }
try { try {
Log.v("Decrypted string: {0}", Utils.toCsharpString(Encoding.Unicode.GetString(fileData, usHeapOffsetString, (stringLength + 1) & ~1))); Log.v("Decrypted string: {0}", Utils.toCsharpString(Encoding.Unicode.GetString(fileData, usHeapOffsetString, stringDataLength - 1)));
} }
catch { catch {
Log.v("Could not decrypt string at offset {0:X8}", usHeapOffsetOrig); Log.v("Could not decrypt string at offset {0:X8}", usHeapOffsetOrig);