arno/hashcat
1
0
Fork 0
mirror of https://github.com/hashcat/hashcat.git synced 2024-11-05 23:10:00 +00:00
Code Issues Releases Wiki Activity

pdf edit password m25400 can now also use the user-password as salt

Browse Source
This commit is contained in:
Your Name 2021-07-12 23:12:52 +02:00
parent 021f23cfad
commit b24ca10087
1 changed files with 108 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

109
src/modules/module_25400.c
View File

@ -56,6 +56,7 @@ typedef struct pdf
u32 id_buf[8];
u32 u_buf[32];
u32 o_buf[32];
u8 u_pass_buf[64];
int id_len;
int o_len;
@ -152,6 +153,10 @@ u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED con
int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
{
char *input_buf = (char *) line_buf;
int input_len = line_len;
// based on m22000 module_hash_decode() we detect both the hashformat with and without user-password
u32 *digest = (u32 *) digest_buf;
pdf_t *pdf = (pdf_t *) esalt_buf;
@ -232,8 +237,106 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
token.attr[11] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token); // was a const, now no longer, as we need it again for the new hashformat
//check if hashformat without user-password is detected
if (rc_tokenizer == PARSER_OK)
{
char tmp_buf[1024];
int tmp_len;
tmp_len = snprintf (tmp_buf, sizeof (tmp_buf), "%s*", line_buf); // simply add an extra asterisk to denote a empty user-password
input_buf = tmp_buf;
input_len = tmp_len;
}
//token_t token; should we first destroy token?
token.token_cnt = 13;
token.signatures_cnt = 1;
token.signatures_buf[0] = SIGNATURE_PDF;
token.len[0] = 5;
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
| TOKEN_ATTR_VERIFY_SIGNATURE;
token.len_min[1] = 1;
token.len_max[1] = 1;
token.sep[1] = '*';
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[2] = 1;
token.len_max[2] = 1;
token.sep[2] = '*';
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[3] = 3;
token.len_max[3] = 3;
token.sep[3] = '*';
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[4] = 1;
token.len_max[4] = 6;
token.sep[4] = '*';
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH;
token.len_min[5] = 1;
token.len_max[5] = 1;
token.sep[5] = '*';
token.attr[5] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[6] = 2;
token.len_max[6] = 2;
token.sep[6] = '*';
token.attr[6] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[7] = 32;
token.len_max[7] = 64;
token.sep[7] = '*';
token.attr[7] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[8] = 2;
token.len_max[8] = 2;
token.sep[8] = '*';
token.attr[8] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[9] = 64;
token.len_max[9] = 64;
token.sep[9] = '*';
token.attr[9] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[10] = 2;
token.len_max[10] = 2;
token.sep[10] = '*';
token.attr[10] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_DIGIT;
token.len_min[11] = 64;
token.len_max[11] = 64;
token.sep[11] = '*';
token.attr[11] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_HEX;
token.len_min[12] = 0;
token.len_max[12] = 64; // arbitrarily limit user-password length to 64 now
token.sep[12] = '*';
token.attr[12] = TOKEN_ATTR_VERIFY_LENGTH;
rc_tokenizer = input_tokenizer ((const u8 *) input_buf, input_len, &token);
// detect hashformat including the user-password
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
const u8 *V_pos = token.buf[1];
@ -247,6 +350,7 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
const u8 *u_buf_pos = token.buf[9]; // user hash
const u8 *o_len_pos = token.buf[10];
const u8 *o_buf_pos = token.buf[11]; // owner hash
const u8 *u_pass_buf_pos = token.buf[12]; // user password (optional)
// validate data
@ -287,6 +391,9 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
pdf->R = R;
pdf->P = P;
//printf("\n\n u_pass_buf_pos: %s\n\n", u_pass_buf_pos);
memcpy ( pdf->u_pass_buf , u_pass_buf_pos, 64);
pdf->enc_md = enc_md;
pdf->id_buf[0] = hex_to_u32 (id_buf_pos + 0);