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HackBrowserData/crypto/crypto_windows.go

88 lines
2.3 KiB

//go:build windows
package crypto
import (
"crypto/aes"
"crypto/cipher"
"syscall"
"unsafe"
)
func Chromium(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) < 15 {
return nil, errPasswordIsEmpty
}
return aesGCMDecrypt(encryptPass[15:], key, encryptPass[3:15])
}
func ChromiumForYandex(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) < 3 {
return nil, errPasswordIsEmpty
}
// remove Prefix 'v10'
// gcmBlockSize = 16
// gcmTagSize = 16
// gcmMinimumTagSize = 12 // NIST SP 800-38D recommends tags with 12 or more bytes.
// gcmStandardNonceSize = 12
return aesGCMDecrypt(encryptPass[12:], key, encryptPass[0:12])
}
// chromium > 80 https://source.chromium.org/chromium/chromium/src/+/master:components/os_crypt/os_crypt_win.cc
func aesGCMDecrypt(crypted, key, nounce []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockMode, err := cipher.NewGCM(block)
if err != nil {
return nil, err
}
origData, err := blockMode.Open(nil, nounce, crypted, nil)
if err != nil {
return nil, err
}
return 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
}
// DPAPI (Data Protection Application Programming Interface)
// is a simple cryptographic application programming interface
// available as a built-in component in Windows 2000 and
// later versions of Microsoft Windows operating systems
// chrome < 80 https://chromium.googlesource.com/chromium/src/+/76f496a7235c3432983421402951d73905c8be96/components/os_crypt/os_crypt_win.cc#82
func DPAPI(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
}