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500 lines
16 KiB
500 lines
16 KiB
<#
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.SYNOPSIS
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Get Capstone version as Version object
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#>
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function Get-CapstoneVersion {
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$Version = [System.BitConverter]::GetBytes(
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[Capstone]::cs_version($null, $null)
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)
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New-Object -TypeName version -ArgumentList @(
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$Version[1]
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$Version[0]
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0
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0
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)
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}
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<#
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.SYNOPSIS
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Create C# bindings for capstone.dll
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.PARAMETER DllPath
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Path to capstone.dll
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#>
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function Initialize-Capstone {
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[CmdletBinding()]
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Param (
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[Parameter(Mandatory = $true)]
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[ValidateScript( {
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try {
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Test-Path -Path $_ -PathType Leaf -ErrorAction Stop
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} catch {
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throw "Capstone DLL is missing: $DllPath"
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}
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})]
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[ValidateNotNullOrEmpty()]
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[string]$DllPath
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)
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# Escape path for use in inline C#
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$DllPath = $DllPath.Replace('\', '\\')
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# Inline C# to parse the unmanaged capstone DLL
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# http://stackoverflow.com/questions/16552801/how-do-i-conditionally-add-a-class-with-add-type-typedefinition-if-it-isnt-add
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if (-not ([System.Management.Automation.PSTypeName]'Capstone').Type) {
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Add-Type -TypeDefinition @"
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Security.Principal;
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[StructLayout(LayoutKind.Sequential)]
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public struct cs_insn
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{
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public uint id;
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public ulong address;
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public ushort size;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)]
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public byte[] bytes;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string mnemonic;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 160)]
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public string operands;
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public IntPtr detail;
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}
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/// Partial, only architecture-independent internal data
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[StructLayout(LayoutKind.Sequential)]
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public struct cs_detail
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] regs_read;
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public byte regs_read_count;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 20)]
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public byte[] regs_write;
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public byte regs_write_count;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] groups;
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public byte groups_count;
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}
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public enum cs_err : int
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{
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CS_ERR_OK = 0, /// No error: everything was fine
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CS_ERR_MEM, /// Out-Of-Memory error: cs_open(), cs_disasm(), cs_disasm_iter()
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CS_ERR_ARCH, /// Unsupported architecture: cs_open()
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CS_ERR_HANDLE, /// Invalid handle: cs_op_count(), cs_op_index()
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CS_ERR_CSH, /// Invalid csh argument: cs_close(), cs_errno(), cs_option()
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CS_ERR_MODE, /// Invalid/unsupported mode: cs_open()
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CS_ERR_OPTION, /// Invalid/unsupported option: cs_option()
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CS_ERR_DETAIL, /// Information is unavailable because detail option is OFF
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CS_ERR_MEMSETUP, /// Dynamic memory management uninitialized (see CS_OPT_MEM)
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CS_ERR_VERSION, /// Unsupported version (bindings)
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CS_ERR_DIET, /// Access irrelevant data in "diet" engine
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CS_ERR_SKIPDATA, /// Access irrelevant data for "data" instruction in SKIPDATA mode
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CS_ERR_X86_ATT, /// X86 AT&T syntax is unsupported (opt-out at compile time)
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CS_ERR_X86_INTEL, /// X86 Intel syntax is unsupported (opt-out at compile time)
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}
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public enum cs_arch : int
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{
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CS_ARCH_ARM = 0, /// ARM architecture (including Thumb, Thumb-2)
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CS_ARCH_ARM64, /// ARM-64, also called AArch64
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CS_ARCH_MIPS, /// Mips architecture
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CS_ARCH_X86, /// X86 architecture (including x86 & x86-64)
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CS_ARCH_PPC, /// PowerPC architecture
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CS_ARCH_SPARC, /// Sparc architecture
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CS_ARCH_SYSZ, /// SystemZ architecture
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CS_ARCH_XCORE, /// XCore architecture
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CS_ARCH_MAX,
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CS_ARCH_ALL = 0xFFFF, /// All architectures - for cs_support()
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}
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public enum cs_mode : int
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{
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CS_MODE_LITTLE_ENDIAN = 0, /// little-endian mode (default mode)
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CS_MODE_ARM = 0, /// 32-bit ARM
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CS_MODE_16 = 1 << 1, /// 16-bit mode (X86)
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CS_MODE_32 = 1 << 2, /// 32-bit mode (X86)
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CS_MODE_64 = 1 << 3, /// 64-bit mode (X86, PPC)
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CS_MODE_THUMB = 1 << 4, /// ARM's Thumb mode, including Thumb-2
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CS_MODE_MCLASS = 1 << 5, /// ARM's Cortex-M series
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CS_MODE_V8 = 1 << 6, /// ARMv8 A32 encodings for ARM
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CS_MODE_MICRO = 1 << 4, /// MicroMips mode (MIPS)
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CS_MODE_MIPS3 = 1 << 5, /// Mips III ISA
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CS_MODE_MIPS32R6 = 1 << 6, /// Mips32r6 ISA
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CS_MODE_MIPSGP64 = 1 << 7, /// General Purpose Registers are 64-bit wide (MIPS)
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CS_MODE_V9 = 1 << 4, /// SparcV9 mode (Sparc)
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CS_MODE_BIG_ENDIAN = 1 << 31, /// big-endian mode
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CS_MODE_MIPS32 = CS_MODE_32, /// Mips32 ISA (Mips)
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CS_MODE_MIPS64 = CS_MODE_64, /// Mips64 ISA (Mips)
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}
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public static class Capstone
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{
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[DllImport("$DllPath")]
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public static extern cs_err cs_open(
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cs_arch arch,
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cs_mode mode,
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ref IntPtr handle);
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[DllImport("$DllPath")]
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public static extern UInt32 cs_disasm(
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IntPtr handle,
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byte[] code,
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int code_size,
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ulong address,
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int count,
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ref IntPtr insn);
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[DllImport("$DllPath")]
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public static extern bool cs_free(
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IntPtr insn,
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int count);
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[DllImport("$DllPath")]
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public static extern cs_err cs_close(
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ref IntPtr handle);
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[DllImport("$DllPath")]
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public static extern cs_err cs_option(
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IntPtr handle,
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int type,
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int value);
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[DllImport("$DllPath", CallingConvention = CallingConvention.Cdecl)]
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public static extern IntPtr cs_reg_name(
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IntPtr handle,
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uint reg_id);
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[DllImport("$DllPath")]
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public static extern int cs_version(
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uint major,
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uint minor);
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}
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"@
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} else {
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Write-Verbose 'C# bindings are already compiled'
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}
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}
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function Get-CapstoneDisassembly {
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<#
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.SYNOPSIS
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Powershell wrapper for Capstone (using inline C#).
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.DESCRIPTION
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Author: Ruben Boonen (@FuzzySec), @beatcracker
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License: BSD 3-Clause
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Required Dependencies: None
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Optional Dependencies: None
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.PARAMETER Architecture
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Architecture type.
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.PARAMETER Mode
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Mode type.
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.PARAMETER Bytes
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Byte array to be disassembled.
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.PARAMETER Syntax
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Syntax for output assembly.
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.PARAMETER Address
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Assign address for the first instruction to be disassembled.
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.PARAMETER Detailed
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Return detailed output.
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.PARAMETER Version
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Print ASCII version banner.
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.EXAMPLE
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C:\PS> $Bytes = [byte[]] @( 0x10, 0xf1, 0x10, 0xe7, 0x11, 0xf2, 0x31, 0xe7, 0xdc, 0xa1, 0x2e, 0xf3, 0xe8, 0x4e, 0x62, 0xf3 )
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C:\PS> Get-CapstoneDisassembly -Architecture CS_ARCH_ARM -Mode CS_MODE_ARM -Bytes $Bytes
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Address : 0x100000
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Instruction : sdiv r0, r0, r1
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Address : 0x100004
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Instruction : udiv r1, r1, r2
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Address : 0x100008
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Instruction : vbit q5, q15, q6
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Address : 0x10000C
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Instruction : vcgt.f32 q10, q9, q12
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.EXAMPLE
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# Detailed mode & ATT syntax
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C:\PS> $Bytes = [byte[]] @( 0xB8, 0x0A, 0x00, 0x00, 0x00, 0xF7, 0xF3 )
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C:\PS> Get-CapstoneDisassembly -Architecture CS_ARCH_X86 -Mode CS_MODE_32 -Bytes $Bytes -Syntax ATT -Detailed
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Address : 0x100000
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Mnemonic : movl
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Operands : $0xa, %eax
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Bytes : {184, 10, 0, 0...}
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Size : 5
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RegRead :
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RegWrite :
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Address : 0x100005
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Mnemonic : divl
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Operands : %ebx
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Bytes : {247, 243}
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Size : 2
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RegRead : {eax, edx}
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RegWrite : {eax, edx, eflags}
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.EXAMPLE
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# Get-CapstoneDisassembly emits objects
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C:\PS> $Bytes = [byte[]] @( 0xB8, 0x0A, 0x00, 0x00, 0x00, 0xF7, 0xF3 )
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C:\PS> $Object = Get-CapstoneDisassembly -Architecture CS_ARCH_X86 -Mode CS_MODE_32 -Bytes $Bytes -Detailed
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C:\PS> $Object | Select-Object -Property Size, Mnemonic, Operands
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Size Mnemonic Operands
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---- -------- --------
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5 mov eax, 0xa
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2 div ebx
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#>
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[CmdletBinding(DefaultParameterSetName = 'Capstone')]
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Param (
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[Parameter(ParameterSetName = 'Capstone', Mandatory = $true)]
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[ValidateSet(
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'CS_ARCH_ARM',
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'CS_ARCH_ARM64',
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'CS_ARCH_MIPS',
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'CS_ARCH_X86',
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'CS_ARCH_PPC',
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'CS_ARCH_SPARC',
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'CS_ARCH_SYSZ',
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'CS_ARCH_XCORE',
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'CS_ARCH_MAX',
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'CS_ARCH_ALL'
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)]
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[string]$Architecture,
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[Parameter(ParameterSetName = 'Capstone', Mandatory = $true)]
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[ValidateSet(
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'CS_MODE_LITTLE_ENDIAN',
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'CS_MODE_ARM',
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'CS_MODE_16',
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'CS_MODE_32',
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'CS_MODE_64',
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'CS_MODE_THUMB',
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'CS_MODE_MCLASS',
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'CS_MODE_V8',
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'CS_MODE_MICRO',
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'CS_MODE_MIPS3',
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'CS_MODE_MIPS32R6',
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'CS_MODE_MIPSGP64',
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'CS_MODE_V9',
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'CS_MODE_BIG_ENDIAN',
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'CS_MODE_MIPS32',
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'CS_MODE_MIPS64'
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)]
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[string]$Mode,
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[Parameter(ParameterSetName = 'Capstone', Mandatory = $true)]
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[ValidateNotNullOrEmpty()]
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[byte[]]$Bytes,
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[Parameter(ParameterSetName = 'Capstone')]
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[ValidateSet(
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'Intel',
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'ATT'
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)]
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[string]$Syntax = 'Intel',
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[Parameter(ParameterSetName = 'Capstone')]
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[uint64]$Address = 0x100000,
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[Parameter(ParameterSetName = 'Capstone')]
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[switch]$Detailed,
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[Parameter(ParameterSetName = 'Version')]
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[switch]$Version
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)
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if ($Version) {
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$Banner = @'
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(((;
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(; "((((\
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;((((((; "((((;
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((((""\(((( "((((
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((((" ((\ "(((( "(((\
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;(((/ ((((((( "(((( \(((
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((((" (((* "(((( \(((;"(((\
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((((";((("/(( \(((;"(((\"(((\
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(((( (((( ((((" "(((\ ((() (((\
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;((("(((( (((* **"" ((()"(((;
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(((" ((( (((( ((((((((((((((:*(((
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(((( (((*)((( ********"""" ;;(((((;
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(((* ((( (((((((((((((((((((((*"" (
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((("(((( """***********"""" ;;(((((
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"" (((((((((((((((((((((((((((*""
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"""****(((((****"""
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-=[Capstone Engine v{0}]=-
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'@ -f (Get-CapstoneVersion).ToString(2)
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# Mmm ASCII version banner!
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return $Banner
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}
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# Disasm Handle
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$DisAsmHandle = [System.IntPtr]::Zero
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# Initialize Capstone with cs_open()
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$CallResult = [Capstone]::cs_open($Architecture, $Mode, [ref]$DisAsmHandle)
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if ($CallResult -ne 'CS_ERR_OK') {
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if ($CallResult -eq 'CS_ERR_MODE') {
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throw "Invalid Architecture/Mode combination: $Architecture/$Mode"
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} else {
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throw "cs_open error: $CallResult"
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}
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}
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# Set disassembly syntax
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#---
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# cs_opt_type -> CS_OPT_SYNTAX = 1
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#---
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# cs_opt_value -> CS_OPT_SYNTAX_INTEL = 1
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# -> CS_OPT_SYNTAX_ATT = 2
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if ($Syntax -eq 'Intel') {
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$CS_OPT_SYNTAX = 1
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} else {
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$CS_OPT_SYNTAX = 2
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}
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$CallResult = [Capstone]::cs_option($DisAsmHandle, 1, $CS_OPT_SYNTAX)
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if ($CallResult -ne 'CS_ERR_OK') {
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$CallResult = [Capstone]::cs_close([ref]$DisAsmHandle)
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throw "cs_option error: $CallResult"
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}
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# Set disassembly detail
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#---
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# cs_opt_type -> CS_OPT_DETAIL = 2
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#---
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# cs_opt_value -> CS_OPT_ON = 3
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# -> CS_OPT_OFF = 0
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if ($Detailed) {
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$CS_OPT = 3
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} else {
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$CS_OPT = 0
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}
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$CallResult = [Capstone]::cs_option($DisAsmHandle, 2, $CS_OPT)
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if ($CallResult -ne 'CS_ERR_OK') {
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$CallResult = [Capstone]::cs_close([ref]$DisAsmHandle)
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throw "cs_option error: $CallResult"
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}
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# Out Buffer Handle
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$InsnHandle = [System.IntPtr]::Zero
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# Disassemble bytes
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$Count = [Capstone]::cs_disasm($DisAsmHandle, $Bytes, $Bytes.Count, $Address, 0, [ref]$InsnHandle)
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if ($Count -gt 0) {
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# Result struct
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$cs_insn = if ($PSVersionTable.PSVersion.Major -gt 2) {
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[cs_insn]@{}
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} else {
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New-Object -TypeName cs_insn
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}
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$cs_insn_size = [System.Runtime.InteropServices.Marshal]::SizeOf($cs_insn)
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$cs_insn = $cs_insn.GetType()
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# Result detail struct
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$cs_detail = if ($PSVersionTable.PSVersion.Major -gt 2) {
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[cs_detail]@{}
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} else {
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New-Object -TypeName cs_detail
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}
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$cs_detail = $cs_detail.GetType()
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# Result buffer offset
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$BuffOffset = $InsnHandle.ToInt64()
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for ($i = 0 ; $i -lt $Count ; $i++) {
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# Cast Offset to cs_insn
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$Cast = [System.Runtime.InteropServices.Marshal]::PtrToStructure([System.Intptr]$BuffOffset, [type]$cs_insn)
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if ($CS_OPT -eq 0) {
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$Disassembly = @{
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Address = $Cast.address
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Instruction = '{0} {1}' -f $Cast.mnemonic, $Cast.operands
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}
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if ($PSVersionTable.PSVersion.Major -gt 2) {
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# Add TypeName for PS formatting and output result
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$Disassembly.PSTypeName ='CapstoneDisassembly.Simple'
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[pscustomobject]$Disassembly
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} else {
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$Disassembly = New-Object -TypeName PSObject -Property $Disassembly
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# Add TypeName for PS formatting and output result
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$Disassembly.PSObject.TypeNames.Insert(0, 'CapstoneDisassembly.Simple')
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$Disassembly
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}
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} else {
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$DetailCast = [System.Runtime.InteropServices.Marshal]::PtrToStructure($Cast.detail, [type]$cs_detail)
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if ($DetailCast.regs_read_count -gt 0) {
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$RegRead = for ($r = 0 ; $r -lt $DetailCast.regs_read_count ; $r++) {
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$NamePointer = [Capstone]::cs_reg_name($DisAsmHandle, $DetailCast.regs_read[$r])
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[System.Runtime.InteropServices.Marshal]::PtrToStringAnsi($NamePointer)
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}
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}
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if ($DetailCast.regs_write_count -gt 0) {
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$RegWrite = for ($r = 0 ; $r -lt $DetailCast.regs_write_count ; $r++) {
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$NamePointer = [Capstone]::cs_reg_name($DisAsmHandle, $DetailCast.regs_write[$r])
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[System.Runtime.InteropServices.Marshal]::PtrToStringAnsi($NamePointer)
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}
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}
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$Disassembly = @{
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Address = $Cast.address
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Mnemonic = $Cast.mnemonic
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Operands = $Cast.operands
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Bytes = $Cast.bytes[0..($Cast.size - 1)]
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Size = $Cast.size
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RegRead = $RegRead
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RegWrite = $RegWrite
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}
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if ($PSVersionTable.PSVersion.Major -gt 2) {
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# Add TypeName for PS formatting and output result
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$Disassembly.PSTypeName = 'CapstoneDisassembly.Detailed'
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[pscustomobject]$Disassembly
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} else {
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$Disassembly = New-Object -TypeName PSObject -Property $Disassembly
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# Add TypeName for PS formatting and output result
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$Disassembly.PSObject.TypeNames.Insert(0, 'CapstoneDisassembly.Detailed')
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$Disassembly
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}
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}
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$BuffOffset = $BuffOffset + $cs_insn_size
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}
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} else {
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$CallResult = [Capstone]::cs_close([ref]$DisAsmHandle)
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throw 'Disassembly Failed'
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}
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# Free Buffer Handle
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$CallResult = [Capstone]::cs_free($InsnHandle, $Count)
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}
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#region Init
|
|
|
|
Initialize-Capstone -DllPath (
|
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Join-Path -Path $PSScriptRoot -ChildPath 'Lib\Capstone\capstone.dll'
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) -ErrorAction Stop
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#endregion |