vencedor

DWORD WINAPI GetEnvironmentVariable(
   __in    LPCTSTR lpName,   //환경변수이름
   __out  LPTSTR lpBuffer,  //환경변수를 담을 버퍼, null-terminating 문자를 포함 최대 "32,767"의 크기 제한이 있다.
   __in    DWORD nSize
);

시스템 환경 변수 위치
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\control\session Manager\Enviroment

사용자 환경 변수 위치
HKEY_CURRENT_USER\Environment

환경변수 가져오기
int nSize = ::GetEnvironmentVariable("TEMP", NULL, NULL);
TCHAR* buffer = new TCHAR[nSize +1];
GetEnvironmentVariable("TEMP",buffer, nSize);
// 만약 버퍼의 크기가 변수의 크기보다 작다면 0이 리턴 되므로 버퍼의 크기를 nSize만큼 얻어와야 한다.

환경변수 설정하기
SetEnvironmentVariable("TEMP", "C:\\tmp");

환경변수 지우기

SetEnvironmentVariable("TEMP", NULL);

참고 : https://webnet77.net/cgi-bin/helpers/base-64.pl

Python 2.7 code

# -*- coding: utf-8 -*-
import sys,base64

if len(sys.argv) is 2:
  print >> sys.stderr, 'e.g) base64.py c:\test\base64.txt c:\test\base64'
  exit(1)

fname = sys.argv[1]
zname = sys.argv[2]

FH = open(fname, 'rb')
zname = str(zname)+".exe"

try:
	s = FH.read()
	dec = base64.b64decode(s)
	FZ = open(zname, 'wb')
	FZ.write(dec)
	FH.close()
	FZ.close() 
except IOError:
	print >> sys.stderr, 'error'

C:\>SET
ALLUSERSPROFILE=C:\ProgramData
APPDATA=C:\Users\USER\AppData\Roaming
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
COMPUTERNAME=DESKTOP-USER
ComSpec=C:\Windows\system32\cmd.exe
HOMEDRIVE=C:
HOMEPATH=\Users\USER
LOCALAPPDATA=C:\Users\USER\AppData\Local
LOGONSERVER=\\DESKTOP-USER
NUMBER_OF_PROCESSORS=4
OS=Windows_NT
Path=C:\Perl64\site\bin;C:\Perl64\bin;C:\Python27\;C:\Python27\Scripts;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PROCESSOR_ARCHITECTURE=AMD64
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 69 Stepping 1, GenuineIntel
PROCESSOR_LEVEL=6
PROCESSOR_REVISION=4501
ProgramData=C:\ProgramData
ProgramFiles=C:\Program Files
ProgramFiles(x86)=C:\Program Files (x86)
ProgramW6432=C:\Program Files
PROMPT=$P$G
PSModulePath=C:\Program Files\WindowsPowerShell\Modules;C:\Windows\system32\WindowsPowerShell\v1.0\Modules;C:\Program Files (x86)\Microsoft SQL Server\120\Tools\PowerShell\Modules\
PUBLIC=C:\Users\Public
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\Windows
TEMP=C:\Users\USER\AppData\Local\Temp
TMP=C:\Users\USER\AppData\Local\Temp
USERDOMAIN=DESKTOP-USER
USERDOMAIN_ROAMINGPROFILE=DESKTOP-USER
USERNAME=USER
USERPROFILE=C:\Users\USER
VS100COMNTOOLS=c:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\Tools\
windir=C:\Windows