-
Notifications
You must be signed in to change notification settings - Fork 0
/
Program.cs
195 lines (161 loc) · 8.05 KB
/
Program.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.ComponentModel;
using System.IO;
namespace gpcdir
{
class Program
{
static void Main(string[] args)
{
if (args.Length != 1)
{
Console.Error.WriteLine("There must be only 1 integer argument");
return;
}
int input = Convert.ToInt32(args[0]);
Console.WriteLine(ProcessUtilities.GetCurrentDirectory(input).TrimEnd(Path.DirectorySeparatorChar));
#if DEBUG
Console.ReadKey();
#endif
}
}
public static class ProcessUtilities
{
public static string GetCurrentDirectory(int processId)
{
return GetProcessParametersString(processId, Environment.Is64BitOperatingSystem ? 0x38 : 0x24);
}
public static string GetCurrentDirectory(this Process process)
{
if (process == null)
throw new ArgumentNullException("process");
return GetCurrentDirectory(process.Id);
}
public static string GetCommandLine(int processId)
{
return GetProcessParametersString(processId, Environment.Is64BitOperatingSystem ? 0x70 : 0x40);
}
public static string GetCommandLine(this Process process)
{
if (process == null)
throw new ArgumentNullException("process");
return GetCommandLine(process.Id);
}
private static string GetProcessParametersString(int processId, int offset)
{
IntPtr handle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, false, processId);
if (handle == IntPtr.Zero)
throw new Win32Exception(Marshal.GetLastWin32Error());
int processParametersOffset = Environment.Is64BitOperatingSystem ? 0x20 : 0x10;
try
{
if (Environment.Is64BitOperatingSystem && !Environment.Is64BitProcess) // are we running in WOW?
{
PROCESS_BASIC_INFORMATION_WOW64 pbi = new PROCESS_BASIC_INFORMATION_WOW64();
int hr = NtWow64QueryInformationProcess64(handle, 0, ref pbi, Marshal.SizeOf(pbi), IntPtr.Zero);
if (hr != 0)
throw new Win32Exception(hr);
long pp = 0;
hr = NtWow64ReadVirtualMemory64(handle, pbi.PebBaseAddress + processParametersOffset, ref pp, Marshal.SizeOf(pp), IntPtr.Zero);
if (hr != 0)
throw new Win32Exception(hr);
UNICODE_STRING_WOW64 us = new UNICODE_STRING_WOW64();
hr = NtWow64ReadVirtualMemory64(handle, pp + offset, ref us, Marshal.SizeOf(us), IntPtr.Zero);
if (hr != 0)
throw new Win32Exception(hr);
if ((us.Buffer == 0) || (us.Length == 0))
return null;
string s = new string('\0', us.Length / 2);
hr = NtWow64ReadVirtualMemory64(handle, us.Buffer, s, us.Length, IntPtr.Zero);
if (hr != 0)
throw new Win32Exception(hr);
return s;
}
else // we are running with the same bitness as the OS, 32 or 64
{
PROCESS_BASIC_INFORMATION pbi = new PROCESS_BASIC_INFORMATION();
int hr = NtQueryInformationProcess(handle, 0, ref pbi, Marshal.SizeOf(pbi), IntPtr.Zero);
if (hr != 0)
throw new Win32Exception(hr);
IntPtr pp = new IntPtr();
if (!ReadProcessMemory(handle, pbi.PebBaseAddress + processParametersOffset, ref pp, new IntPtr(Marshal.SizeOf(pp)), IntPtr.Zero))
throw new Win32Exception(Marshal.GetLastWin32Error());
UNICODE_STRING us = new UNICODE_STRING();
if (!ReadProcessMemory(handle, pp + offset, ref us, new IntPtr(Marshal.SizeOf(us)), IntPtr.Zero))
throw new Win32Exception(Marshal.GetLastWin32Error());
if ((us.Buffer == IntPtr.Zero) || (us.Length == 0))
return null;
string s = new string('\0', us.Length / 2);
if (!ReadProcessMemory(handle, us.Buffer, s, new IntPtr(us.Length), IntPtr.Zero))
throw new Win32Exception(Marshal.GetLastWin32Error());
return s;
}
}
finally
{
CloseHandle(handle);
}
}
private const int PROCESS_QUERY_INFORMATION = 0x400;
private const int PROCESS_VM_READ = 0x10;
[StructLayout(LayoutKind.Sequential)]
private struct PROCESS_BASIC_INFORMATION
{
public IntPtr Reserved1;
public IntPtr PebBaseAddress;
public IntPtr Reserved2_0;
public IntPtr Reserved2_1;
public IntPtr UniqueProcessId;
public IntPtr Reserved3;
}
[StructLayout(LayoutKind.Sequential)]
private struct UNICODE_STRING
{
public short Length;
public short MaximumLength;
public IntPtr Buffer;
}
// for 32-bit process in a 64-bit OS only
[StructLayout(LayoutKind.Sequential)]
private struct PROCESS_BASIC_INFORMATION_WOW64
{
public long Reserved1;
public long PebBaseAddress;
public long Reserved2_0;
public long Reserved2_1;
public long UniqueProcessId;
public long Reserved3;
}
// for 32-bit process in a 64-bit OS only
[StructLayout(LayoutKind.Sequential)]
private struct UNICODE_STRING_WOW64
{
public short Length;
public short MaximumLength;
public long Buffer;
}
[DllImport("ntdll.dll")]
private static extern int NtQueryInformationProcess(IntPtr ProcessHandle, int ProcessInformationClass, ref PROCESS_BASIC_INFORMATION ProcessInformation, int ProcessInformationLength, IntPtr ReturnLength);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, ref IntPtr lpBuffer, IntPtr dwSize, IntPtr lpNumberOfBytesRead);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, ref UNICODE_STRING lpBuffer, IntPtr dwSize, IntPtr lpNumberOfBytesRead);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [MarshalAs(UnmanagedType.LPWStr)] string lpBuffer, IntPtr dwSize, IntPtr lpNumberOfBytesRead);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);
[DllImport("kernel32.dll")]
private static extern bool CloseHandle(IntPtr hObject);
// for 32-bit process in a 64-bit OS only
[DllImport("ntdll.dll")]
private static extern int NtWow64QueryInformationProcess64(IntPtr ProcessHandle, int ProcessInformationClass, ref PROCESS_BASIC_INFORMATION_WOW64 ProcessInformation, int ProcessInformationLength, IntPtr ReturnLength);
[DllImport("ntdll.dll")]
private static extern int NtWow64ReadVirtualMemory64(IntPtr hProcess, long lpBaseAddress, ref long lpBuffer, long dwSize, IntPtr lpNumberOfBytesRead);
[DllImport("ntdll.dll")]
private static extern int NtWow64ReadVirtualMemory64(IntPtr hProcess, long lpBaseAddress, ref UNICODE_STRING_WOW64 lpBuffer, long dwSize, IntPtr lpNumberOfBytesRead);
[DllImport("ntdll.dll")]
private static extern int NtWow64ReadVirtualMemory64(IntPtr hProcess, long lpBaseAddress, [MarshalAs(UnmanagedType.LPWStr)] string lpBuffer, long dwSize, IntPtr lpNumberOfBytesRead);
}
}