arno
/
hashcat
mirror of https://github.com/hashcat/hashcat.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Add new function is_valid_printable_32() to check if 32 bit integer consist only of printable characters and update -m 26610 as example use case

Browse Source
pull/3638/head
jsteube 1 year ago
parent 4fe68b0d4f
commit d5a74b2536
5 changed files with 59 additions and 54 deletions
Show Stats Download Patch File Download Diff File

18
OpenCL/inc_common.cl
Unescape View File

@ -2806,6 +2806,24 @@ DECLSPEC int is_valid_base58_32 (const u32 v)
return 1;
}
DECLSPEC int is_valid_printable_8 (const u8 v)
{
if (v > (u8) 0x7e) return 0;
if (v < (u8) 0x20) return 0;
return 1;
}
DECLSPEC int is_valid_printable_32 (const u32 v)
{
if (is_valid_printable_8 ((u8) (v >> 0)) == 0) return 0;
if (is_valid_printable_8 ((u8) (v >> 8)) == 0) return 0;
if (is_valid_printable_8 ((u8) (v >> 16)) == 0) return 0;
if (is_valid_printable_8 ((u8) (v >> 24)) == 0) return 0;
return 1;
}
DECLSPEC int hc_find_keyboard_layout_map (const u32 search, const int search_len, LOCAL_AS keyboard_layout_mapping_t *s_keyboard_layout_mapping_buf, const int keyboard_layout_mapping_cnt)
{
for (int idx = 0; idx < keyboard_layout_mapping_cnt; idx++)

2
OpenCL/inc_common.h
Unescape View File

@ -311,6 +311,8 @@ DECLSPEC int is_valid_hex_8 (const u8 v);
DECLSPEC int is_valid_hex_32 (const u32 v);
DECLSPEC int is_valid_base58_8 (const u8 v);
DECLSPEC int is_valid_base58_32 (const u32 v);
DECLSPEC int is_valid_printable_8 (const u8 v);
DECLSPEC int is_valid_printable_32 (const u32 v);
DECLSPEC int hc_find_keyboard_layout_map (const u32 search, const int search_len, LOCAL_AS keyboard_layout_mapping_t *s_keyboard_layout_mapping_buf, const int keyboard_layout_mapping_cnt);
DECLSPEC int hc_execute_keyboard_layout_mapping (PRIVATE_AS u32 *w, const int pw_len, LOCAL_AS keyboard_layout_mapping_t *s_keyboard_layout_mapping_buf, const int keyboard_layout_mapping_cnt);
DECLSPEC void make_utf16be (PRIVATE_AS const u32x *in, PRIVATE_AS u32x *out1, PRIVATE_AS u32x *out2);

12
OpenCL/m25500-pure.cl
Unescape View File

@ -334,12 +334,12 @@ KERNEL_FQ void m25500_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
// iv
const u32 iv[4] = {
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3]
};
const u32 iv[4];
iv[0] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0];
iv[1] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1];
iv[2] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2];
iv[3] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3];
const u32 iv_len = esalt_bufs[DIGESTS_OFFSET_HOST].iv_len;

12
OpenCL/m26600-pure.cl
Unescape View File

@ -334,12 +334,12 @@ KERNEL_FQ void m26600_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
// iv
const u32 iv[4] = {
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3]
};
const u32 iv[4];
iv[0] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0];
iv[1] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1];
iv[2] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2];
iv[3] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3];
const u32 iv_len = esalt_bufs[DIGESTS_OFFSET_HOST].iv_len;

69
OpenCL/m26610-pure.cl
Unescape View File

@ -335,12 +335,13 @@ KERNEL_FQ void m26610_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
AES_GCM_Init (ukey, key_len, key, subKey, s_te0, s_te1, s_te2, s_te3, s_te4);
// iv
const u32 iv[4] = {
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2],
esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3]
};
u32 iv[4];
iv[0] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[0];
iv[1] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[1];
iv[2] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[2];
iv[3] = esalt_bufs[DIGESTS_OFFSET_HOST].iv_buf[3];
const u32 iv_len = esalt_bufs[DIGESTS_OFFSET_HOST].iv_len;
@ -349,13 +350,14 @@ KERNEL_FQ void m26610_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
AES_GCM_Prepare_J0 (iv, iv_len, subKey, J0);
//ct
u32 ct[4] = {
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[0],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[1],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[2],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[3]
};
u32 ct[4];
ct[0] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[0];
ct[1] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[1];
ct[2] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[2];
ct[3] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[3];
u32 pt[4] = { 0 };
// we try to decrypt the ciphertext
@ -365,41 +367,24 @@ KERNEL_FQ void m26610_comp (KERN_ATTR_TMPS_ESALT (pbkdf2_sha256_tmp_t, pbkdf2_sh
// if ((gid == 0) && (lid == 0)) printf ("pt[0]=%08x\n", pt[0]); // should be 5b7b2274 or [{"type"
// cast plaintext buffer to byte such that we can do a byte per byte comparison
PRIVATE_AS const u32 *u32OutBufPtr = (PRIVATE_AS u32 *) pt;
PRIVATE_AS const u8 *u8OutBufPtr = (PRIVATE_AS u8 *) u32OutBufPtr;
// the best comparison I can think of is checking each byte
// whether it's ASCII, if so we're good,
// if not, decryption was not successful
bool correct = true;
for(int i=0;i<16;i++)
{
if(u8OutBufPtr[i] >=20 && u8OutBufPtr[i] <= 0x7e) {
//if ((gid == 0) && (lid == 0)) printf("correct ASCII byte[%d]=0x%02x\n", i, u8OutBufPtr[i]);
}
else {
//if ((gid == 0) && (lid == 0)) printf("NOT correct! byte[%d]=0x%02x\n", i, u8OutBufPtr[i]);
correct = false;
break;
}
}
u32 digest[4];
digest[0] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[0];
digest[1] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[1];
digest[2] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[2];
digest[3] = esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[3];
const u32 digest[4] =
{
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[0],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[1],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[2],
esalt_bufs[DIGESTS_OFFSET_HOST].ct_buf[3],
};
//if ((gid == 0) && (lid == 0)) printf ("ct[0]=%08x\n", ct[0]);
//if ((gid == 0) && (lid == 0)) printf ("ct[1]=%08x\n", ct[1]);
//if ((gid == 0) && (lid == 0)) printf ("ct[2]=%08x\n", ct[2]);
//if ((gid == 0) && (lid == 0)) printf ("ct[3]=%08x\n", ct[3]);
if (correct)
const int correct = is_valid_printable_32 (pt[0])
+ is_valid_printable_32 (pt[1])
+ is_valid_printable_32 (pt[2])
+ is_valid_printable_32 (pt[3]);
if (correct == 4)
{
int digest_pos = find_hash (digest, DIGESTS_CNT, &digests_buf[DIGESTS_OFFSET_HOST]);

Write Preview
Loading…
Cancel
Save