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HackBrowserData/core/decrypt/decrypt.go

89 lines
1.8 KiB

package decrypt
import (
"crypto/aes"
"crypto/cipher"
"crypto/des"
"encoding/asn1"
"errors"
"hack-browser-data/log"
)
var (
errSecurityKeyIsEmpty = errors.New("input [security find-generic-password -wa 'Chrome'] in terminal")
errPasswordIsEmpty = errors.New("password is empty")
errDecryptFailed = errors.New("decrypt failed, password is empty")
)
func aes128CBCDecrypt(key, iv, encryptPass []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
dst := make([]byte, len(encryptPass))
mode := cipher.NewCBCDecrypter(block, iv)
mode.CryptBlocks(dst, encryptPass)
dst = PKCS5UnPadding(dst)
return dst, nil
}
func PKCS5UnPadding(src []byte) []byte {
length := len(src)
unpad := int(src[length-1])
return src[:(length - unpad)]
}
// Des3Decrypt use for decrypt firefox PBE
func Des3Decrypt(key, iv []byte, src []byte) ([]byte, error) {
block, err := des.NewTripleDESCipher(key)
if err != nil {
log.Error(err)
return nil, err
}
blockMode := cipher.NewCBCDecrypter(block, iv)
sq := make([]byte, len(src))
blockMode.CryptBlocks(sq, src)
return sq, nil
}
func PaddingZero(s []byte, l int) []byte {
h := l - len(s)
if h <= 0 {
return s
} else {
for i := len(s); i < l; i++ {
s = append(s, 0)
}
return s
}
}
/*
SEQUENCE (3 elem)
OCTET STRING (16 byte)
SEQUENCE (2 elem)
OBJECT IDENTIFIER 1.2.840.113549.3.7 des-EDE3-CBC (RSADSI encryptionAlgorithm)
OCTET STRING (8 byte)
OCTET STRING (16 byte)
*/
type LoginPBE struct {
CipherText []byte
SequenceLogin
Encrypted []byte
}
type SequenceLogin struct {
asn1.ObjectIdentifier
Iv []byte
}
func DecodeLogin(decodeItem []byte) (pbe LoginPBE, err error) {
_, err = asn1.Unmarshal(decodeItem, &pbe)
if err != nil {
log.Error(err)
return
}
return pbe, nil
}