private static void CodeHookCallback(
CapstoneDisassembler <X86Instruction, X86Register, X86InstructionGroup, X86InstructionDetail> disassembler,
Unicorn u,
Int64 addr,
Int32 size,
Object userData)
{
Console.Write("[+] 0x{0}: ", addr.ToString("X"));
var eipBuffer = new Byte[4];
u.RegRead(X86.UC_X86_REG_EIP, eipBuffer);
var effectiveSize = Math.Min(16, size);
var tmp = new Byte[effectiveSize];
u.MemRead(addr, tmp);
var sb = new StringBuilder();
foreach (var t in tmp)
{
sb.AppendFormat("{0} ", (0xFF & t).ToString("X"));
}
Console.Write("{0,-20}", sb);
Console.WriteLine(Utils.Disassemble(disassembler, tmp));
}
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];
u.RegRead(X86.UC_X86_REG_EAX, eaxBuffer);
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];
u.RegRead(X86.UC_X86_REG_ECX, ecxBuffer);
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];
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;
}
}
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];
u.RegRead(X86.UC_X86_REG_EIP, eipBuffer);
var effectiveSize = Math.Min(16, size);
var tmp = new Byte[effectiveSize];
u.MemRead(addr, tmp);
foreach (var t in tmp)
{
Console.Write("{0} ", (0xFF & t).ToString("X"));
}
Console.WriteLine();
}
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 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;
}
}
private static void CodeHookCallback(
CapstoneDisassembler<X86Instruction, X86Register, X86InstructionGroup, X86InstructionDetail> disassembler,
Unicorn u,
Int64 addr,
Int32 size,
Object userData)
{
Console.Write("[+] 0x{0}: ", addr.ToString("X"));
var eipBuffer = new Byte[4];
u.RegRead(X86.UC_X86_REG_EIP, eipBuffer);
var effectiveSize = Math.Min(16, size);
var tmp = new Byte[effectiveSize];
u.MemRead(addr, tmp);
var sb = new StringBuilder();
foreach (var t in tmp)
{
sb.AppendFormat("{0} ", (0xFF & t).ToString("X"));
}
Console.Write("{0,-20}", sb);
Console.WriteLine(Utils.Disassemble(disassembler, tmp));
}
