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conda创建虚拟环境

注意新开终端后要重新启动

conda create -n py38 python==3.8  //创建虚拟环境
conda activate py38     //开启虚拟环境
conda deactivate py38  //关闭虚拟环境
conda remove --name py38 --all // 删除虚拟环境
  
如果只删除虚拟环境中的某个或者某些包则是：
conda remove --name env_name  package_name

前面出现

（base）就说明启动成功

报错处理

Windows PowerShell
版权所有（C） Microsoft Corporation。保留所有权利。
 
安装最新的 PowerShell，了解新功能和改进！https://aka.ms/PSWindows
 
. : 无法加载文件 C:\Users\xxx\Documents\WindowsPowerShell\profile.ps1，因为在此系统上禁止运行脚本。有关详细信息，请
参阅 https:/go.microsoft.com/fwlink/?LinkID=135170 中的 about_Execution_Policies。
所在位置 行:1 字符: 3
+ . 'C:\Users\xxx\Documents\WindowsPowerShell\profile.ps1'
+   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : SecurityError: (:) []，PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess
PS C:\Users\xxx> conda init powershell
no change     I:\anaconda\Scripts\conda.exe
no change     I:\anaconda\Scripts\conda-env.exe
no change     I:\anaconda\Scripts\conda-script.py
no change     I:\anaconda\Scripts\conda-env-script.py
no change     I:\anaconda\condabin\conda.bat
no change     I:\anaconda\Library\bin\conda.bat
no change     I:\anaconda\condabin\_conda_activate.bat
no change     I:\anaconda\condabin\rename_tmp.bat
no change     I:\anaconda\condabin\conda_auto_activate.bat
no change     I:\anaconda\condabin\conda_hook.bat
no change     I:\anaconda\Scripts\activate.bat
no change     I:\anaconda\condabin\activate.bat
no change     I:\anaconda\condabin\deactivate.bat
needs sudo    I:\anaconda\Scripts\activate
needs sudo    I:\anaconda\Scripts\deactivate
needs sudo    I:\anaconda\etc\profile.d\conda.sh
needs sudo    I:\anaconda\etc\fish\conf.d\conda.fish
no change     I:\anaconda\shell\condabin\Conda.psm1
needs sudo    I:\anaconda\shell\condabin\conda-hook.ps1
no change     I:\anaconda\Lib\site-packages\xontrib\conda.xsh
needs sudo    I:\anaconda\etc\profile.d\conda.csh
no change     C:\Users\xxx\Documents\WindowsPowerShell\profile.ps1
No action taken.   

如何解决：

打开PowerShell，运行

Set-ExecutionPolicy RemoteSigned -Scope CurrentUser

例题

nssctf入门pyc

查看是py312magic头

conda create -n py312 python==3.12

conda activate py312

要去对应的py版本下面反汇编才能出现额外pyc

python .\pyinstxtractor.py 1.exe

pycdc.exe main.pyc > main.py

# Source Generated with Decompyle++
# File: main.pyc (Python 3.12)

import extra
user_input = input('plz input flag: ')
res = []
enc = [
    52,
    41,
    41,
    57,
    46,
    60,
    1,
    10,
    3,
    25,
    37,
    19,
    9,
    37,
    10,
    3,
    14,
    18,
    21,
    20,
    37,
    24,
    3,
    14,
    31,
    25,
    21,
    30,
    31,
    7]
for i in user_input:
    res.append(extra.cul(ord(i)))
for j in range(len(res)):
    if not res[j] != enc[j]:
        continue
    print('Wrong flag!')
    exit()
print('You get flag!')

找到extra.pyc

enc = [
    52,
    41,
    41,
    57,
    46,
    60,
    1,
    10,
    3,
    25,
    37,
    19,
    9,
    37,
    10,
    3,
    14,
    18,
    21,
    20,
    37,
    24,
    3,
    14,
    31,
    25,
    21,
    30,
    31,
    7]
for i in enc:
    print(chr(i^122),end='')

更新: 2025-09-29 14:40:10
原文: https://www.yuque.com/chaye-apqbl/vsc85q/fht6xfvt7cwrnlp3