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Chrome State Key Parsing Bugfix #40

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Merged
leechristensen merged 1 commit into from
Jun 27, 2024
Merged

Chrome State Key Parsing Bugfix #40

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17 changes: 14 additions & 3 deletions SharpChrome/lib/Chrome.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -780,15 +780,26 @@ public static void ParseChromeCookies(Dictionary<string, string> MasterKeys, str
public static string GetBase64EncryptedKey(string localStatePath)
{
// extracts the base64 encoded encrypted chrome AES state key
// quote-wrap the search term in order to handle multiple
// JSON keys with "encrypted_key" (e.g., "app_bound_encrypted_key")
string localStateData = File.ReadAllText(localStatePath);
string searchTerm = "encrypted_key";

string searchTerm = "\"encrypted_key\"";
int indexPadding = 2;
int startIndex = localStateData.IndexOf(searchTerm);

// if we can't find the quote-wrapped variant, fall back to
// the original variant
if (startIndex < 0)
{
searchTerm = "encrypted_key";
indexPadding = 3;
startIndex = localStateData.IndexOf(searchTerm);
}

if (startIndex < 0)
return "";

int keyIndex = startIndex + searchTerm.Length + 3;
int keyIndex = startIndex + searchTerm.Length + indexPadding;
string tempVals = localStateData.Substring(keyIndex);

int stopIndex = tempVals.IndexOf('"');
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