Above we show the comparison of anti-compilation technology, we clearly saw the power of three tools. From the anti-compilation result from C #, it is undoubtedly the best, it has completely eliminated your source. Exterior leakage.
But C # is just a high-level language. We hope to get a little more, I hope to read the deeper code MSIL, then let us use a variety of tools to get its MSIL code.
The MSIL code of the source file is as follows:
Private instance. Method Private Instance
String
ENCRYPT
String instr) CIL Managed
{
// Code Size: 84 byte (s)
.MAXSTACK 5
.locals
String
Text1,
Int32
Num1,
Int32
Num2,
String
TEXT2,
String
Text3,
Int32
Num3,
Int32
Num4)
L_0000: NOP
L_0001: LDSTR "a # 2151336fdaghksfges"
L_0006: STLOC.3
L_0007: ldarg.1
L_0008: Callvirt Instance
Int32
String ::
Get_length ()
L_000d: STLOC.1
L_000e: ldc.i4.0
L_000f: Stloc.s Num3
L_0011: ldc.i4.0
L_0012: LDLOC.1
L_0013: ldc.i4.1
L_0014: Sub.ovf
L_0015: STLOC.S NUM4
L_0017: STLOC.2
L_0018: Br.s l_0048
L_001a: ldloc.s text3
L_001c: ldarg.1
L_001d: ldloc.2
L_001e: ldc.i4.1
L_001f: Callvirt Instance
String
String ::
Substring
INT32,
INT32)
L_0024: ldloc.3
L_0025: ldloc.s num3
L_0027: ldc.i4.1
L_0028: Callvirt Instance
String
String ::
Substring
INT32,
INT32)
L_002d: Call
String
String ::
CONCAT
String,
String,
String)
L_0032: Stloc.s text3
L_0034: ldloc.s num3
L_0036: ldc.i4.1
L_0037: add.ovf
L_0038: STLOC.S NUM3
L_003a: ldloc.s num3
L_003c: ldc.i4.s 20
L_003e: blt.s l_0043
L_0040: ldc.i4.0
L_0041: STLOC.S NUM3
L_0043: NOP
L_0044: LDLOC.2
L_0045: ldc.i4.1
L_0046: add.ovf
L_0047: STLOC.2
L_0048: ldloc.2
L_0049: ldloc.s num4
L_004b: ble.s l_001a
L_004d: ldloc.s text3
L_004f: STLOC.0
L_0050: Br.s l_0052
L_0052: LDLOC.0
L_0053: Ret
}
Private instance. Method Private Instance
String
REGISTER
String instr) CIL Managed
{
// Code Size: 44 byte (s)
.MAXSTACK 5
.locals
[
Mscorlib]
System.text.asciiencoding
ENCODING1,
[
Mscorlib]
System.security.cryptography.rsacryptoserviceProviderProvider1,
String
TEXT1)
L_0000: NOP
L_0001: Newobj Instance
Void [
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
.ctor ()
L_0006: STLOC.1
L_0007: Newobj Instance
Void [
Mscorlib]
System.text.asciiencoding ::
.ctor ()
L_000c: STLOC.0
L_000d: ldloc.0
L_000e: ldloc.1
L_000f: ldloc.0
L_0010: ldarg.0
L_0011: ldarg.1
L_0012: Callvirt Instance
String
TestRegister.form1 ::
ENCRYPT
String)
L_0017: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.text.Encoding ::
Gettes
String)
L_001c: ldc.i4.0
L_001d: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
ENCRYPT
Unsigned int8 [],
BOOL)
L_0022: Callvirt Instance
String [
Mscorlib]
System.text.asciiencoding ::
GetString
unsigned int8 [])
L_0027: STLOC.2
L_0028: Br.s l_002a
L_002a: ldloc.2
L_002b: Ret
}
Dotfuscator Community Edition MSIL
Private instance. Method Private Instance
String
b (
String a_0) CIL Managed
{
// Code Size: 84 byte (s)
.MAXSTACK 5
.locals
String
Text1,
Int32
Num1,
Int32
Num2,
String
TEXT2,
String
Text3,
Int32
Num3,
Int32
Num4)
L_0000: NOP
L_0001: LDSTR "a # 2151336fdaghksfges"
L_0006: STLOC.3
L_0007: ldarg.1
L_0008: Callvirt Instance
Int32
String ::
Get_length ()
L_000d: STLOC.1
L_000e: ldc.i4.0
L_000f: Stloc.s Num3
L_0011: ldc.i4.0
L_0012: LDLOC.1
L_0013: ldc.i4.1
L_0014: Sub.ovf
L_0015: STLOC.S NUM4
L_0017: STLOC.2
L_0018: Br.s l_0048
L_001a: ldloc.s text3
L_001c: ldarg.1
L_001d: ldloc.2
L_001e: ldc.i4.1
L_001f: Callvirt Instance
String
String ::
Substring
INT32,
INT32)
L_0024: ldloc.3
L_0025: ldloc.s num3
L_0027: ldc.i4.1
L_0028: Callvirt InstanceString
String ::
Substring
INT32,
INT32)
L_002d: Call
String
String ::
CONCAT
String,
String,
String)
L_0032: Stloc.s text3
L_0034: ldloc.s num3
L_0036: ldc.i4.1
L_0037: add.ovf
L_0038: STLOC.S NUM3
L_003a: ldloc.s num3
L_003c: ldc.i4.s 20
L_003e: blt.s l_0043
L_0040: ldc.i4.0
L_0041: STLOC.S NUM3
L_0043: NOP
L_0044: LDLOC.2
L_0045: ldc.i4.1
L_0046: add.ovf
L_0047: STLOC.2
L_0048: ldloc.2
L_0049: ldloc.s num4
L_004b: ble.s l_001a
L_004d: ldloc.s text3
L_004f: STLOC.0
L_0050: Br.s l_0052
L_0052: LDLOC.0
L_0053: Ret
}
Private instance. Method Private Instance
String
a
String a_0) CIL Managed
{
// Code Size: 44 byte (s)
.MAXSTACK 5
.locals
[
Mscorlib]
System.text.asciiencoding
ENCODING1,
[
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider
Provider1,
String
TEXT1)
L_0000: NOP
L_0001: Newobj Instance
Void [
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
.ctor ()
L_0006: STLOC.1
L_0007: Newobj Instance
Void [
Mscorlib]
System.text.asciiencoding ::
.ctor ()
L_000c: STLOC.0
L_000d: ldloc.0
L_000e: ldloc.1
L_000f: ldloc.0
L_0010: ldarg.0
L_0011: ldarg.1
L_0012: Callvirt Instance
String
C ::
b (
String)
L_0017: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.text.Encoding ::
Gettes
String)
L_001c: ldc.i4.0
L_001d: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
ENCRYPT
Unsigned int8 [],
BOOL)
L_0022: Callvirt Instance
String [
Mscorlib]
System.text.asciiencoding ::
GetString
unsigned int8 [])
L_0027: STLOC.2
L_0028: Br.s l_002a
L_002a: ldloc.2
L_002b: Ret
}
Evaluation:
Still, as the source code is basically ... I don't know what it means to give us this kind of thing.
2. Xeoncode MSIL
Private instanceString
X246B032720DD4C0D (
String x96c91b85a03f00b0) CIL Managed
{
// Code Size: 105 byte (s)
.MAXSTACK 6
.locals
String
Text1,
Int32
Num1,
Int32
Num2,
String
TEXT2,
String
Text3,
Int32
Num3,
Int32
Num4)
L_0000: LDSTR "/ UEC3B / UF2FA / UFA06 / U0102 / U0803 / U0EFC / U15FB / U1CF8 / U23F8 / U2B25 / U3220 / U391A / U401D / U471B / U4E1B / U5520 / U5C10 / U630E / U6A09 / U7114"
L_0005: ldc.i4 281144282
L_000a: Call
String
X2715EFF98365D956.X1110BDD110CDCEA4 ::
_D574BB1A8F3E9CBC (
String,
INT32)
L_000f: Call
String
String ::
INTERN
String)
L_0014: STLOC.3
L_0015: ldarg.1
L_0016: Callvirt Instance
Int32
String ::
Get_length ()
L_001b: STLOC.1
L_001c: ldc.i4.0
L_001d: stloc.s Num3
L_001f: br.s l_0043
L_0021: Stloc.s text3
L_0023: ldloc.s num3
L_0025: Br.s l_0030
L_0027: ldc.i4.s 20
L_0029: blt.s l_0038
L_002b: ldc.i4.0
L_002c: STLOC.S NUM3
L_002e: Br.s l_0038
L_0030: ldc.i4.1
L_0031: add.ovf
L_0032: STLOC.S NUM3
L_0034: ldloc.s num3
L_0036: Br.s l_0027
L_0038: ldloc.2
L_0039: ldc.i4.1
L_003a: add.ovf
L_003b: STLOC.2
L_003c: ldloc.2
L_003d: ldloc.s num4
L_003f: ble.s l_004c
L_0041: Br.s l_0066
L_0043: ldc.i4.0
L_0044: LDLOC.1
L_0045: ldc.i4.1
L_0046: Sub.ovf
L_0047: STLOC.S NUM4
L_0049: STLOC.2
L_004a: Br.s l_003c
L_004c: ldloc.s text3
L_004e: ldarg.1
L_004f: ldloc.2
L_0050: ldc.i4.1
L_0051: Callvirt Instance
String
String ::
Substring
INT32,
INT32)
L_0056: LDLOC.3
L_0057: ldloc.s num3
L_0059: ldc.i4.1
L_005a: Callvirt Instance
String
String ::
Substring
INT32,
INT32)
L_005f: Call
String
String ::
CONCAT
String,
String,
String)
L_0064: Br.s l_0021
L_0066: ldloc.s text3
L_0068: Ret
}
Private instance. Method Private Instance
String
X2A0CB95AB84BA877 (
String X5B3E4CBA383DEDD9) CIL Managed
{
// Code Size: 39 byte (s)
.MAXSTACK 6
.locals
[
Mscorlib]
System.text.asciiencoding
ENCODING1,
[
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider
Provider1,
String
TEXT1)
L_0000: Newobj Instance
Void [
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
.ctor ()
L_0005: STLOC.1
L_0006: Newobj Instance
Void [
Mscorlib]
System.text.asciiencoding ::
.ctor ()
L_000b: STLOC.0
L_000c: ldloc.0
L_000d: ldloc.1
L_000e: ldloc.0
L_000f: ldarg.0
L_0010: ldarg.1
L_0011: Callvirt Instance
String
X9324A7F62E6A3AE4.XAA4F033827D75B4D ::
X246B032720DD4C0D (
String)
L_0016: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.text.Encoding ::
Gettes
String)
L_001b: ldc.i4.0
L_001c: Callvirt Instance
Unsigned int8 [] []
Mscorlib]
System.security.cryptography.rsacryptoserviceProvider ::
ENCRYPT
Unsigned int8 [],
BOOL)
L_0021: Callvirt Instance
String [
Mscorlib]
System.text.asciiencoding ::
GetString
unsigned int8 [])
L_0026: Ret
}
Evaluation:
There is a little flower ordered, but in the MSIL state, the logic of the source code is undoubted, and you can read it, not ideal.
3. Maxtocode MSIL
Private instance. Method Private Instance
String
ENCRYPT
String instr) CIL Managed
{
}
Private instance. Method Private Instance
String
REGISTER
String instr) CIL Managed
{
}
Evaluation:
I still can't see the code, I am afraid that it is more than the bottom MSIL. It should be safe.
The above comparison allows you to know more about who is more perfect for your intellectual property protection.
Exclude factors on the code level, let's take a look at other aspects.
to be continued. . .
