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HackBrowserData/core/decrypt/decrypt_linux.go

174 lines
3.7 KiB

package decrypt
import (
"crypto/hmac"
"crypto/sha1"
"crypto/sha256"
"encoding/asn1"
"encoding/hex"
"hack-browser-data/log"
"golang.org/x/crypto/pbkdf2"
)
const (
fireFoxProfilePath = "/home/*/.mozilla/firefox/*.default-release/"
fireFoxCommand = ""
)
var (
chromeIV = []byte{32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32}
chromeSalt = []byte("saltysalt")
)
func ChromePass(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) > 3 {
if len(key) == 0 {
return nil, errKeyIsEmpty
}
m, err := aes128CBCDecrypt(key, chromeIV, encryptPass[3:])
return m, err
} else {
return nil, errDecryptFailed
}
}
func DPApi(data []byte) ([]byte, error) {
return nil, nil
}
/*
SEQUENCE (2 elem)
SEQUENCE (2 elem)
OBJECT IDENTIFIER
SEQUENCE (2 elem)
OCTET STRING (20 byte)
INTEGER 1
OCTET STRING (16 byte)
*/
type MetaPBE struct {
SequenceA
Encrypted []byte
}
type SequenceA struct {
DecryptMethod asn1.ObjectIdentifier
SequenceB
}
type SequenceB struct {
EntrySalt []byte
Len int
}
type NssPBE struct {
SequenceNSSA
Encrypted []byte
}
type SequenceNSSA struct {
PKCS5PBES2 asn1.ObjectIdentifier
SequenceNSSB
}
type SequenceNSSB struct {
SequenceC
SequenceD
}
type SequenceC struct {
PKCS5PBKDF2 asn1.ObjectIdentifier
SequenceE
}
type SequenceD struct {
AES256CBC asn1.ObjectIdentifier
IV []byte
}
type SequenceE struct {
EntrySalt []byte
IterationCount int
KeySize int
SequenceF
}
type SequenceF struct {
HMACWithSHA256 asn1.ObjectIdentifier
}
func DecodeMeta(decodeItem []byte) (pbe MetaPBE, err error) {
_, err = asn1.Unmarshal(decodeItem, &pbe)
if err != nil {
log.Error(err)
return
}
return
}
func DecodeNss(nssA11Bytes []byte) (pbe NssPBE, err error) {
log.Debug(hex.EncodeToString(nssA11Bytes))
_, err = asn1.Unmarshal(nssA11Bytes, &pbe)
if err != nil {
log.Error(err)
return
}
return
}
func Meta(globalSalt, masterPwd []byte, pbe MetaPBE) ([]byte, error) {
return decryptMeta(globalSalt, masterPwd, pbe.EntrySalt, pbe.Encrypted)
}
func Nss(globalSalt, masterPwd []byte, pbe NssPBE) ([]byte, error) {
return decryptNss(globalSalt, masterPwd, pbe.IV, pbe.EntrySalt, pbe.Encrypted, pbe.IterationCount, pbe.KeySize)
}
func decryptMeta(globalSalt, masterPwd, entrySalt, encrypted []byte) ([]byte, error) {
//byte[] GLMP; // GlobalSalt + MasterPassword
//byte[] HP; // SHA1(GLMP)
//byte[] HPES; // HP + EntrySalt
//byte[] CHP; // SHA1(HPES)
//byte[] PES; // EntrySalt completed to 20 bytes by zero
//byte[] PESES; // PES + EntrySalt
//byte[] k1;
//byte[] tk;
//byte[] k2;
//byte[] k; // final value conytaining key and iv
glmp := append(globalSalt, masterPwd...)
hp := sha1.Sum(glmp)
s := append(hp[:], entrySalt...)
chp := sha1.Sum(s)
pes := PaddingZero(entrySalt, 20)
tk := hmac.New(sha1.New, chp[:])
tk.Write(pes)
pes = append(pes, entrySalt...)
k1 := hmac.New(sha1.New, chp[:])
k1.Write(pes)
tkPlus := append(tk.Sum(nil), entrySalt...)
k2 := hmac.New(sha1.New, chp[:])
k2.Write(tkPlus)
k := append(k1.Sum(nil), k2.Sum(nil)...)
iv := k[len(k)-8:]
key := k[:24]
log.Warnf("key=%s iv=%s", hex.EncodeToString(key), hex.EncodeToString(iv))
return Des3Decrypt(key, iv, encrypted)
}
func decryptNss(globalSalt, masterPwd, nssIv, entrySalt, encrypted []byte, iter, keySize int) ([]byte, error) {
k := sha1.Sum(globalSalt)
log.Println(hex.EncodeToString(k[:]))
key := pbkdf2.Key(k[:], entrySalt, iter, keySize, sha256.New)
log.Println(hex.EncodeToString(key))
i, err := hex.DecodeString("040e")
if err != nil {
log.Println(err)
}
// @https://hg.mozilla.org/projects/nss/rev/fc636973ad06392d11597620b602779b4af312f6#l6.49
iv := append(i, nssIv...)
dst, err := aes128CBCDecrypt(key, iv, encrypted)
if err != nil {
log.Println(err)
}
return dst, err
}