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Refactored test project

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This commit is contained in:
Antonio Parata 2015-10-15 12:03:23 +02:00
parent c0ba09e0b8
commit d2f487485c
4 changed files with 215 additions and 141 deletions
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144
bindings/dotnet/UnicornTests/Program.cs
View file

@ -29,149 +29,11 @@ namespace UnicornTests
{ {
class Program class Program
{ {
private const UInt64 ADDRESS = 0x1000000;
private static Byte[] X86_CODE32_SELF =
{
0xeb, 0x19, 0x31, 0xc0, 0x31, 0xdb, 0x31, 0xd2, 0x31, 0xc9, 0xb0, 0x04, 0xb3, 0x01, 0x59, 0xb2, 0x05, 0xcd,
0x80, 0x31, 0xc0, 0xb0, 0x01, 0x31, 0xdb, 0xcd, 0x80, 0xe8, 0xe2, 0xff, 0xff, 0xff, 0x68, 0x65, 0x6c, 0x6c,
0x6f
};
private static UInt64 ToInt(Byte[] val)
{
UInt64 res = 0;
for (var i = 0; i < val.Length; i++)
{
var v = val[i] & 0xFF;
res += (UInt64)(v << (i * 8));
}
return res;
}
private static void CheckError(Int32 err)
{
if (err != Common.UC_ERR_OK)
{
throw new ApplicationException("Operation failed, error: " + err);
}
}
private static Byte[] Int64ToBytes(UInt64 intVal)
{
var res = new Byte[8];
for (var i = 0; i < res.Length; i++)
{
res[i] = (Byte)(intVal & 0xff);
intVal = intVal >> 8;
}
return res;
}
private static void CodeHookCallback(Unicorn u, UInt64 addr, Int32 size, Object userData)
{
Console.Write("Tracing >>> 0x{0} ", addr.ToString("X"));
var eipBuffer = new Byte[4];
CheckError(u.RegRead(X86.UC_X86_REG_EIP, eipBuffer));
var effectiveSize = Math.Min(16, size);
var tmp = new Byte[effectiveSize];
CheckError(u.MemRead(addr, tmp));
foreach (var t in tmp)
{
Console.Write("{0} ", (0xFF & t).ToString("X"));
}
Console.WriteLine();
}
private static void InterruptHookCallback(Unicorn u, Int32 intNumber, Object userData)
{
// only handle Linux syscall
if (intNumber != 0x80)
{
return;
}
var eaxBuffer = new Byte[4];
var eipBuffer = new Byte[4];
CheckError(u.RegRead(X86.UC_X86_REG_EAX, eaxBuffer));
CheckError(u.RegRead(X86.UC_X86_REG_EIP, eipBuffer));
var eax = ToInt(eaxBuffer);
var eip = ToInt(eipBuffer);
switch (eax)
{
default:
Console.WriteLine("Interrupt >>> 0x{0} num {1}, EAX=0x{2}", eip.ToString("X"), intNumber.ToString("X"), eax.ToString("X"));
break;
case 1: // sys_exit
Console.WriteLine("Interrupt >>> 0x{0} num {1}, SYS_EXIT", eip.ToString("X"), intNumber.ToString("X"));
u.EmuStop();
break;
case 4: // sys_write
// ECX = buffer address
var ecxBuffer = new Byte[4];
// EDX = buffer size
var edxBuffer = new Byte[4];
CheckError(u.RegRead(X86.UC_X86_REG_ECX, ecxBuffer));
CheckError(u.RegRead(X86.UC_X86_REG_EDX, edxBuffer));
var ecx = ToInt(ecxBuffer);
var edx = ToInt(edxBuffer);
// read the buffer in
var size = Math.Min(256, edx);
var buffer = new Byte[size];
CheckError(u.MemRead(ecx, buffer));
var content = Encoding.Default.GetString(buffer);
Console.WriteLine(
"Interrupt >>> 0x{0}: num {1}, SYS_WRITE. buffer = 0x{2}, size = , content = '{3}'",
eip.ToString("X"),
ecx.ToString("X"),
edx.ToString("X"),
content);
break;
}
}
static void Main(String[] args) static void Main(String[] args)
{ {
var u = new Unicorn(Common.UC_ARCH_X86, Common.UC_MODE_32); // Run all shellcode tests
Console.WriteLine("Unicorn version: {0}", u.Version()); ShellcodeTest.TestX86Code32Self();
ShellcodeTest.TestX86Code32();
// map 2MB of memory for this emulation
CheckError(u.MemMap(ADDRESS, new UIntPtr(2 * 1024 * 1024), Common.UC_PROT_ALL));
// write machine code to be emulated to memory
CheckError(u.MemWrite(ADDRESS, X86_CODE32_SELF));
// initialize machine registers
CheckError(u.RegWrite(X86.UC_X86_REG_ESP, Int64ToBytes(ADDRESS + 0x200000)));
// tracing all instructions by having @begin > @end
CheckError(u.AddCodeHook(CodeHookCallback, null, 1, 0).Item1);
// handle interrupt ourself
CheckError(u.AddInterruptHook(InterruptHookCallback, null).Item1);
Console.WriteLine();
Console.WriteLine(">>> Start tracing linux code");
// emulate machine code in infinite time
u.EmuStart(ADDRESS, ADDRESS + (UInt64)X86_CODE32_SELF.Length, 0u, new UIntPtr(0));
Console.WriteLine();
Console.WriteLine(">>> Emulation Done!");
} }
} }
} }

168
bindings/dotnet/UnicornTests/ShellcodeTest.cs Normal file
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@ -0,0 +1,168 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using UnicornEngine;
using UnicornEngine.Const;
namespace UnicornTests
{
internal class ShellcodeTest
{
private const UInt64 ADDRESS = 0x1000000;
public static void TestX86Code32Self()
{
Byte[] X86_CODE32_SELF =
{
0xeb, 0x1c, 0x5a, 0x89, 0xd6, 0x8b, 0x02, 0x66, 0x3d, 0xca, 0x7d, 0x75, 0x06, 0x66, 0x05, 0x03, 0x03,
0x89, 0x02, 0xfe, 0xc2, 0x3d, 0x41, 0x41, 0x41, 0x41, 0x75, 0xe9, 0xff, 0xe6, 0xe8, 0xdf, 0xff, 0xff,
0xff, 0x31, 0xd2, 0x6a, 0x0b, 0x58, 0x99, 0x52, 0x68, 0x2f, 0x2f, 0x73, 0x68, 0x68, 0x2f, 0x62, 0x69,
0x6e, 0x89, 0xe3, 0x52, 0x53, 0x89, 0xe1, 0xca, 0x7d, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41
};
Console.WriteLine();
Console.WriteLine("*** Start Shellcode: " + MethodInfo.GetCurrentMethod().Name);
RunTest(X86_CODE32_SELF, ADDRESS);
Console.WriteLine("End Shellcode: " + MethodInfo.GetCurrentMethod().Name);
Console.WriteLine();
}
public static void TestX86Code32()
{
Byte[] X86_CODE32 =
{
0xeb, 0x19, 0x31, 0xc0, 0x31, 0xdb, 0x31, 0xd2, 0x31, 0xc9, 0xb0, 0x04, 0xb3, 0x01, 0x59, 0xb2, 0x05,
0xcd, 0x80, 0x31, 0xc0, 0xb0, 0x01, 0x31, 0xdb, 0xcd, 0x80, 0xe8, 0xe2, 0xff, 0xff, 0xff, 0x68, 0x65,
0x6c, 0x6c, 0x6f
};
Console.WriteLine();
Console.WriteLine("*** Start Shellcode: " + MethodInfo.GetCurrentMethod().Name);
RunTest(X86_CODE32, ADDRESS);
Console.WriteLine("End Shellcode: " + MethodInfo.GetCurrentMethod().Name);
Console.WriteLine();
}
public static void RunTest(Byte[] code, UInt64 address)
{
var u = new Unicorn(Common.UC_ARCH_X86, Common.UC_MODE_32);
Console.WriteLine("Unicorn version: {0}", u.Version());
// map 2MB of memory for this emulation
Utils.CheckError(u.MemMap(address, new UIntPtr(2 * 1024 * 1024), Common.UC_PROT_ALL));
// write machine code to be emulated to memory
Utils.CheckError(u.MemWrite(address, code));
// initialize machine registers
Utils.CheckError(u.RegWrite(X86.UC_X86_REG_ESP, Utils.Int64ToBytes(address + 0x200000)));
// tracing all instructions by having @begin > @end
Utils.CheckError(u.AddCodeHook(CodeHookCallback, null, 1, 0).Item1);
// handle interrupt ourself
Utils.CheckError(u.AddInterruptHook(InterruptHookCallback, null).Item1);
// handle SYSCALL
Utils.CheckError(u.AddSyscallHook(SyscallHookCallback, null).Item1);
Console.WriteLine(">>> Start tracing linux code");
// emulate machine code in infinite time
u.EmuStart(address, address + (UInt64)code.Length, 0u, new UIntPtr(0));
Console.WriteLine(">>> Emulation Done!");
}
private static void CodeHookCallback(Unicorn u, UInt64 addr, Int32 size, Object userData)
{
Console.Write("Tracing >>> 0x{0} ", addr.ToString("X"));
var eipBuffer = new Byte[4];
Utils.CheckError(u.RegRead(X86.UC_X86_REG_EIP, eipBuffer));
var effectiveSize = Math.Min(16, size);
var tmp = new Byte[effectiveSize];
Utils.CheckError(u.MemRead(addr, tmp));
foreach (var t in tmp)
{
Console.Write("{0} ", (0xFF & t).ToString("X"));
}
Console.WriteLine();
}
private static void SyscallHookCallback(Unicorn u, Object userData)
{
var eaxBuffer = new Byte[4];
Utils.CheckError(u.RegRead(X86.UC_X86_REG_EAX, eaxBuffer));
var eax = Utils.ToInt(eaxBuffer);
Console.WriteLine("Syscall >>> EAX = 0x{0}", eax.ToString("X"));
u.EmuStop();
}
private static void InterruptHookCallback(Unicorn u, Int32 intNumber, Object userData)
{
// only handle Linux syscall
if (intNumber != 0x80)
{
return;
}
var eaxBuffer = new Byte[4];
var eipBuffer = new Byte[4];
Utils.CheckError(u.RegRead(X86.UC_X86_REG_EAX, eaxBuffer));
Utils.CheckError(u.RegRead(X86.UC_X86_REG_EIP, eipBuffer));
var eax = Utils.ToInt(eaxBuffer);
var eip = Utils.ToInt(eipBuffer);
switch (eax)
{
default:
Console.WriteLine("Interrupt >>> 0x{0} num {1}, EAX=0x{2}", eip.ToString("X"), intNumber.ToString("X"), eax.ToString("X"));
break;
case 1: // sys_exit
Console.WriteLine("Interrupt >>> 0x{0} num {1}, SYS_EXIT", eip.ToString("X"), intNumber.ToString("X"));
u.EmuStop();
break;
case 4: // sys_write
// ECX = buffer address
var ecxBuffer = new Byte[4];
// EDX = buffer size
var edxBuffer = new Byte[4];
Utils.CheckError(u.RegRead(X86.UC_X86_REG_ECX, ecxBuffer));
Utils.CheckError(u.RegRead(X86.UC_X86_REG_EDX, edxBuffer));
var ecx = Utils.ToInt(ecxBuffer);
var edx = Utils.ToInt(edxBuffer);
// read the buffer in
var size = Math.Min(256, edx);
var buffer = new Byte[size];
Utils.CheckError(u.MemRead(ecx, buffer));
var content = Encoding.Default.GetString(buffer);
Console.WriteLine(
"Interrupt >>> 0x{0}: num {1}, SYS_WRITE. buffer = 0x{2}, size = , content = '{3}'",
eip.ToString("X"),
ecx.ToString("X"),
edx.ToString("X"),
content);
break;
}
}
}
}

2
bindings/dotnet/UnicornTests/UnicornTests.csproj
View file

@ -45,6 +45,8 @@
<ItemGroup> <ItemGroup>
<Compile Include="Program.cs" /> <Compile Include="Program.cs" />
<Compile Include="Properties\AssemblyInfo.cs" /> <Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="ShellcodeTest.cs" />
<Compile Include="Utils.cs" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<None Include="App.config" /> <None Include="App.config" />

42
bindings/dotnet/UnicornTests/Utils.cs Normal file
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@ -0,0 +1,42 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UnicornEngine.Const;
namespace UnicornTests
{
internal static class Utils
{
public static UInt64 ToInt(Byte[] val)
{
UInt64 res = 0;
for (var i = 0; i < val.Length; i++)
{
var v = val[i] & 0xFF;
res += (UInt64)(v << (i * 8));
}
return res;
}
public static void CheckError(Int32 err)
{
if (err != Common.UC_ERR_OK)
{
throw new ApplicationException("Operation failed, error: " + err);
}
}
public static Byte[] Int64ToBytes(UInt64 intVal)
{
var res = new Byte[8];
for (var i = 0; i < res.Length; i++)
{
res[i] = (Byte)(intVal & 0xff);
intVal = intVal >> 8;
}
return res;
}
}
}