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HackBrowserData/utils/utils_windows.go

158 lines
3.9 KiB

package utils
import (
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"errors"
"os"
"strings"
"syscall"
"unsafe"
"github.com/tidwall/gjson"
)
const (
chromeDir = "/AppData/Local/Google/Chrome/User Data/*/"
chromeKeyFile = "/AppData/Local/Google/Chrome/User Data/Local State"
secure360Dir = "/AppData/Local/360chrome/Chrome/User Data/*/"
secure360KeyFile = ""
edgeDir = "/AppData/Local/Microsoft/Edge/User Data/*/"
edgeKeyFile = "/AppData/Local/Microsoft/Edge/User Data/Local State"
)
var (
chromeKey []byte
browserList = map[string]struct {
Dir string
Key string
}{
"chrome": {
chromeDir,
chromeKeyFile,
},
"edge": {
edgeDir,
edgeKeyFile,
},
"360secure": {
secure360Dir,
secure360KeyFile,
},
}
)
func PickBrowser(name string) (browserDir, key string, err error) {
name = strings.ToLower(name)
if choice, ok := browserList[name]; ok {
if choice.Key != "" {
return os.Getenv("USERPROFILE") + choice.Dir, os.Getenv("USERPROFILE") + choice.Key, nil
} else {
return os.Getenv("USERPROFILE") + choice.Dir, "", nil
}
}
return "", "", errBrowserNotSupported
}
var (
errBase64DecodeFailed = errors.New("decode base64 failed")
)
func InitKey(key string) error {
if key == "" {
VersionUnder80 = true
return nil
}
keyFile, err := ReadFile(key)
if err != nil {
return err
}
encryptedKey := gjson.Get(keyFile, "os_crypt.encrypted_key")
if encryptedKey.Exists() {
pureKey, err := base64.StdEncoding.DecodeString(encryptedKey.String())
if err != nil {
return errBase64DecodeFailed
}
chromeKey, err = decryptStringWithDPAPI(pureKey[5:])
return nil
} else {
VersionUnder80 = true
return nil
}
}
func DecryptChromePass(encryptPass []byte) (string, error) {
if len(encryptPass) > 15 {
// remove prefix 'v10'
return aesGCMDecrypt(encryptPass[15:], chromeKey, encryptPass[3:15])
} else {
return "", passwordIsEmpty
}
}
// chromium > 80 https://source.chromium.org/chromium/chromium/src/+/master:components/os_crypt/os_crypt_win.cc
func aesGCMDecrypt(crypted, key, nounce []byte) (string, error) {
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
blockMode, err := cipher.NewGCM(block)
origData, err := blockMode.Open(nil, nounce, crypted, nil)
if err != nil {
return "", err
}
return string(origData), nil
}
type DataBlob struct {
cbData uint32
pbData *byte
}
func NewBlob(d []byte) *DataBlob {
if len(d) == 0 {
return &DataBlob{}
}
return &DataBlob{
pbData: &d[0],
cbData: uint32(len(d)),
}
}
func (b *DataBlob) ToByteArray() []byte {
d := make([]byte, b.cbData)
copy(d, (*[1 << 30]byte)(unsafe.Pointer(b.pbData))[:])
return d
}
// chrome < 80 https://chromium.googlesource.com/chromium/src/+/76f496a7235c3432983421402951d73905c8be96/components/os_crypt/os_crypt_win.cc#82
func decryptStringWithDPAPI(data []byte) ([]byte, error) {
dllCrypt := syscall.NewLazyDLL("Crypt32.dll")
dllKernel := syscall.NewLazyDLL("Kernel32.dll")
procDecryptData := dllCrypt.NewProc("CryptUnprotectData")
procLocalFree := dllKernel.NewProc("LocalFree")
var outBlob DataBlob
r, _, err := procDecryptData.Call(uintptr(unsafe.Pointer(NewBlob(data))), 0, 0, 0, 0, 0, uintptr(unsafe.Pointer(&outBlob)))
if r == 0 {
return nil, err
}
defer procLocalFree.Call(uintptr(unsafe.Pointer(outBlob.pbData)))
return outBlob.ToByteArray(), nil
}
func DecryptStringWithDPAPI(data []byte) (string, error) {
dllCrypt := syscall.NewLazyDLL("Crypt32.dll")
dllKernel := syscall.NewLazyDLL("Kernel32.dll")
procDecryptData := dllCrypt.NewProc("CryptUnprotectData")
procLocalFree := dllKernel.NewProc("LocalFree")
var outBlob DataBlob
r, _, err := procDecryptData.Call(uintptr(unsafe.Pointer(NewBlob(data))), 0, 0, 0, 0, 0, uintptr(unsafe.Pointer(&outBlob)))
if r == 0 {
return "", err
}
defer procLocalFree.Call(uintptr(unsafe.Pointer(outBlob.pbData)))
return string(outBlob.ToByteArray()), nil
}