From d1e499454e0e974cab0ad9e31a3dbad9e55c44c9 Mon Sep 17 00:00:00 2001 From: de4dot Date: Tue, 27 Mar 2012 02:24:53 +0200 Subject: [PATCH] Rename locals and fix problem with huge strings --- de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs b/de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs index 4bc20c1f..d9821147 100644 --- a/de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs +++ b/de4dot.code/deobfuscators/MaxtoCode/FileDecrypter.cs @@ -690,17 +690,17 @@ namespace de4dot.code.deobfuscators.MaxtoCode { } int usHeapOffsetOrig = usHeapOffset; - int len = DeobUtils.readVariableLengthInt32(fileData, ref usHeapOffset); + int stringDataLength = DeobUtils.readVariableLengthInt32(fileData, ref usHeapOffset); int usHeapOffsetString = usHeapOffset; - int stringLength = len - (usHeapOffset - usHeapOffsetOrig); - for (int i = 0; i < stringLength; i++) { + int encryptedLength = stringDataLength - (usHeapOffset - usHeapOffsetOrig == 1 ? 1 : 2); + for (int i = 0; i < encryptedLength; i++) { byte k = mcKey.readByte(mcKeyOffset++ % 0x2000); fileData[usHeapOffset] = rolb((byte)(fileData[usHeapOffset] ^ k), 3); usHeapOffset++; } 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 { Log.v("Could not decrypt string at offset {0:X8}", usHeapOffsetOrig);