From d52f9c2cadd4b104e484a79c1d88cc82f5030a30 Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Thu, 1 Apr 2021 22:20:54 +0200
Subject: [PATCH] Added attack mode 25400 which cracks a pdf edit password.
It's largely duplicate code of 10500. Based on
https://hashcat.net/forum/thread-6233.html
---
OpenCL/m25400-pure.cl | 456 +++++++++++++++++++++++++++++++
src/modules/module_25400.c | 531 +++++++++++++++++++++++++++++++++++++
2 files changed, 987 insertions(+)
create mode 100644 OpenCL/m25400-pure.cl
create mode 100644 src/modules/module_25400.c
diff --git a/OpenCL/m25400-pure.cl b/OpenCL/m25400-pure.cl
new file mode 100644
index 000000000..e3ac7270e
--- /dev/null
+++ b/OpenCL/m25400-pure.cl
@@ -0,0 +1,456 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+#ifdef KERNEL_STATIC
+#include "inc_vendor.h"
+#include "inc_types.h"
+#include "inc_platform.cl"
+#include "inc_common.cl"
+#include "inc_hash_md5.cl"
+#endif
+
+#define COMPARE_S "inc_comp_single.cl"
+#define COMPARE_M "inc_comp_multi.cl"
+
+CONSTANT_VK u32a padding[8] =
+{
+ 0x5e4ebf28,
+ 0x418a754e,
+ 0x564e0064,
+ 0x0801faff,
+ 0xb6002e2e,
+ 0x803e68d0,
+ 0xfea90c2f,
+ 0x7a695364
+};
+
+typedef struct pdf
+{
+ int V;
+ int R;
+ int P;
+
+ int enc_md;
+
+ u32 id_buf[8];
+ u32 u_buf[32];
+ u32 o_buf[32];
+
+ int id_len;
+ int o_len;
+ int u_len;
+
+ u32 rc4key[2];
+ u32 rc4data[2];
+
+} pdf_t;
+
+typedef struct pdf14_tmp
+{
+ u32 digest[4];
+ u32 out[4];
+
+} pdf14_tmp_t;
+
+typedef struct
+{
+ u8 S[256];
+
+ u32 wtf_its_faster;
+
+} RC4_KEY;
+
+DECLSPEC void swap (LOCAL_AS RC4_KEY *rc4_key, const u8 i, const u8 j)
+{
+ u8 tmp;
+
+ tmp = rc4_key->S[i];
+ rc4_key->S[i] = rc4_key->S[j];
+ rc4_key->S[j] = tmp;
+}
+
+DECLSPEC void rc4_init_16 (LOCAL_AS RC4_KEY *rc4_key, const u32 *data)
+{
+ u32 v = 0x03020100;
+ u32 a = 0x04040404;
+
+ LOCAL_AS u32 *ptr = (LOCAL_AS u32 *) rc4_key->S;
+
+ #ifdef _unroll
+ #pragma unroll
+ #endif
+ for (u32 i = 0; i < 64; i++)
+ {
+ *ptr++ = v; v += a;
+ }
+
+ u32 j = 0;
+
+ #ifdef _unroll
+ #pragma unroll
+ #endif
+ for (u32 i = 0; i < 16; i++)
+ {
+ u32 idx = i * 16;
+
+ u32 v;
+
+ v = data[0];
+
+ j += rc4_key->S[idx] + (v >> 0); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 8); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+ v = data[1];
+
+ j += rc4_key->S[idx] + (v >> 0); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 8); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+ v = data[2];
+
+ j += rc4_key->S[idx] + (v >> 0); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 8); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+
+ v = data[3];
+
+ j += rc4_key->S[idx] + (v >> 0); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 8); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 16); swap (rc4_key, idx, j); idx++;
+ j += rc4_key->S[idx] + (v >> 24); swap (rc4_key, idx, j); idx++;
+ }
+}
+
+DECLSPEC u8 rc4_next_16 (LOCAL_AS RC4_KEY *rc4_key, u8 i, u8 j, const u32 *in, u32 *out)
+{
+ #ifdef _unroll
+ #pragma unroll
+ #endif
+ for (u32 k = 0; k < 4; k++)
+ {
+ u32 xor4 = 0;
+
+ u8 idx;
+
+ i += 1;
+ j += rc4_key->S[i];
+
+ swap (rc4_key, i, j);
+
+ idx = rc4_key->S[i] + rc4_key->S[j];
+
+ xor4 |= rc4_key->S[idx] << 0;
+
+ i += 1;
+ j += rc4_key->S[i];
+
+ swap (rc4_key, i, j);
+
+ idx = rc4_key->S[i] + rc4_key->S[j];
+
+ xor4 |= rc4_key->S[idx] << 8;
+
+ i += 1;
+ j += rc4_key->S[i];
+
+ swap (rc4_key, i, j);
+
+ idx = rc4_key->S[i] + rc4_key->S[j];
+
+ xor4 |= rc4_key->S[idx] << 16;
+
+ i += 1;
+ j += rc4_key->S[i];
+
+ swap (rc4_key, i, j);
+
+ idx = rc4_key->S[i] + rc4_key->S[j];
+
+ xor4 |= rc4_key->S[idx] << 24;
+
+ out[k] = in[k] ^ xor4;
+ }
+
+ return j;
+}
+
+KERNEL_FQ void m25400_init (KERN_ATTR_TMPS_ESALT (pdf14_tmp_t, pdf_t))
+{
+ /**
+ * base
+ */
+
+ const u64 gid = get_global_id (0);
+ //const u64 lid = get_local_id (0);
+
+ if (gid >= gid_max) return;
+
+ u32 w0[4];
+
+ w0[0] = pws[gid].i[ 0];
+ w0[1] = pws[gid].i[ 1];
+ w0[2] = pws[gid].i[ 2];
+ w0[3] = pws[gid].i[ 3];
+
+ u32 w1[4];
+
+ w1[0] = pws[gid].i[ 4];
+ w1[1] = pws[gid].i[ 5];
+ w1[2] = pws[gid].i[ 6];
+ w1[3] = pws[gid].i[ 7];
+
+ const u32 pw_len = pws[gid].pw_len;
+
+ /**
+ * shared
+ */
+
+ //LOCAL_AS RC4_KEY rc4_keys[64];
+ //LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
+ /**
+ * U_buf
+ */
+
+ u32 o_buf[8];
+
+ o_buf[0] = esalt_bufs[DIGESTS_OFFSET].o_buf[0];
+ o_buf[1] = esalt_bufs[DIGESTS_OFFSET].o_buf[1];
+ o_buf[2] = esalt_bufs[DIGESTS_OFFSET].o_buf[2];
+ o_buf[3] = esalt_bufs[DIGESTS_OFFSET].o_buf[3];
+ o_buf[4] = esalt_bufs[DIGESTS_OFFSET].o_buf[4];
+ o_buf[5] = esalt_bufs[DIGESTS_OFFSET].o_buf[5];
+ o_buf[6] = esalt_bufs[DIGESTS_OFFSET].o_buf[6];
+ o_buf[7] = esalt_bufs[DIGESTS_OFFSET].o_buf[7];
+
+ u32 P = esalt_bufs[DIGESTS_OFFSET].P;
+
+ u32 id_buf[12];
+
+ id_buf[ 0] = esalt_bufs[DIGESTS_OFFSET].id_buf[0];
+ id_buf[ 1] = esalt_bufs[DIGESTS_OFFSET].id_buf[1];
+ id_buf[ 2] = esalt_bufs[DIGESTS_OFFSET].id_buf[2];
+ id_buf[ 3] = esalt_bufs[DIGESTS_OFFSET].id_buf[3];
+
+ id_buf[ 4] = esalt_bufs[DIGESTS_OFFSET].id_buf[4];
+ id_buf[ 5] = esalt_bufs[DIGESTS_OFFSET].id_buf[5];
+ id_buf[ 6] = esalt_bufs[DIGESTS_OFFSET].id_buf[6];
+ id_buf[ 7] = esalt_bufs[DIGESTS_OFFSET].id_buf[7];
+
+ id_buf[ 8] = 0;
+ id_buf[ 9] = 0;
+ id_buf[10] = 0;
+ id_buf[11] = 0;
+
+ u32 rc4data[2];
+
+ rc4data[0] = padding[0];
+ rc4data[1] = padding[1];
+
+ /**
+ * main init
+ */
+
+ u32 w0_t[4];
+ u32 w1_t[4];
+ u32 w2_t[4];
+ u32 w3_t[4];
+
+ // max length supported by pdf11 is 32
+
+ w0_t[0] = padding[0];
+ w0_t[1] = padding[1];
+ w0_t[2] = padding[2];
+ w0_t[3] = padding[3];
+ w1_t[0] = padding[4];
+ w1_t[1] = padding[5];
+ w1_t[2] = padding[6];
+ w1_t[3] = padding[7];
+ w2_t[0] = 0;
+ w2_t[1] = 0;
+ w2_t[2] = 0;
+ w2_t[3] = 0;
+ w3_t[0] = 0;
+ w3_t[1] = 0;
+ w3_t[2] = 0;
+ w3_t[3] = 0;
+
+ switch_buffer_by_offset_le (w0_t, w1_t, w2_t, w3_t, pw_len);
+
+ // add password
+ // truncate at 32 is wanted, not a bug!
+ // add o_buf
+
+ w0_t[0] |= w0[0];
+ w0_t[1] |= w0[1];
+ w0_t[2] |= w0[2];
+ w0_t[3] |= w0[3];
+ w1_t[0] |= w1[0];
+ w1_t[1] |= w1[1];
+ w1_t[2] |= w1[2];
+ w1_t[3] |= w1[3];
+ w2_t[0] = 0x80;
+ w2_t[1] = 0;
+ w2_t[2] = 0;
+ w2_t[3] = 0;
+ w3_t[0] = 0;
+ w3_t[1] = 0;
+ w3_t[2] = 32 * 8;
+ w3_t[3] = 0;
+
+ u32 digest[4];
+
+ digest[0] = MD5M_A;
+ digest[1] = MD5M_B;
+ digest[2] = MD5M_C;
+ digest[3] = MD5M_D;
+
+ md5_transform (w0_t, w1_t, w2_t, w3_t, digest);
+
+ tmps[gid].digest[0] = digest[0];
+ tmps[gid].digest[1] = digest[1];
+ tmps[gid].digest[2] = digest[2];
+ tmps[gid].digest[3] = digest[3];
+
+ tmps[gid].out[0] = rc4data[0];
+ tmps[gid].out[1] = rc4data[1];
+ tmps[gid].out[2] = 0;
+ tmps[gid].out[3] = 0;
+}
+
+KERNEL_FQ void m25400_loop (KERN_ATTR_TMPS_ESALT (pdf14_tmp_t, pdf_t))
+{
+ /**
+ * base
+ */
+
+ const u64 gid = get_global_id (0);
+ const u64 lid = get_local_id (0);
+
+ if (gid >= gid_max) return;
+
+ /**
+ * shared
+ */
+
+ LOCAL_VK RC4_KEY rc4_keys[64];
+
+ LOCAL_AS RC4_KEY *rc4_key = &rc4_keys[lid];
+
+ /**
+ * loop
+ */
+
+ u32 digest[4];
+
+ digest[0] = tmps[gid].digest[0];
+ digest[1] = tmps[gid].digest[1];
+ digest[2] = tmps[gid].digest[2];
+ digest[3] = tmps[gid].digest[3];
+
+ u32 out[4];
+
+ out[0] = tmps[gid].out[0];
+ out[1] = tmps[gid].out[1];
+ out[2] = tmps[gid].out[2];
+ out[3] = tmps[gid].out[3];
+
+ for (u32 i = 0, j = loop_pos; i < loop_cnt; i++, j++)
+ {
+ if (j < 50)
+ {
+ u32 w0_t[4];
+ u32 w1_t[4];
+ u32 w2_t[4];
+ u32 w3_t[4];
+
+ w0_t[0] = digest[0];
+ w0_t[1] = digest[1];
+ w0_t[2] = digest[2];
+ w0_t[3] = digest[3];
+ w1_t[0] = 0x80;
+ w1_t[1] = 0;
+ w1_t[2] = 0;
+ w1_t[3] = 0;
+ w2_t[0] = 0;
+ w2_t[1] = 0;
+ w2_t[2] = 0;
+ w2_t[3] = 0;
+ w3_t[0] = 0;
+ w3_t[1] = 0;
+ w3_t[2] = 16 * 8;
+ w3_t[3] = 0;
+
+ digest[0] = MD5M_A;
+ digest[1] = MD5M_B;
+ digest[2] = MD5M_C;
+ digest[3] = MD5M_D;
+
+ md5_transform (w0_t, w1_t, w2_t, w3_t, digest);
+ }
+ else
+ {
+ const u32 x = j - 50;
+
+ const u32 xv = x << 0
+ | x << 8
+ | x << 16
+ | x << 24;
+
+ u32 tmp[4];
+
+ tmp[0] = digest[0] ^ xv;
+ tmp[1] = digest[1] ^ xv;
+ tmp[2] = digest[2] ^ xv;
+ tmp[3] = digest[3] ^ xv;
+
+ rc4_init_16 (rc4_key, tmp);
+
+ rc4_next_16 (rc4_key, 0, 0, out, out);
+ }
+ }
+
+ tmps[gid].digest[0] = digest[0];
+ tmps[gid].digest[1] = digest[1];
+ tmps[gid].digest[2] = digest[2];
+ tmps[gid].digest[3] = digest[3];
+
+ tmps[gid].out[0] = out[0];
+ tmps[gid].out[1] = out[1];
+ tmps[gid].out[2] = out[2];
+ tmps[gid].out[3] = out[3];
+}
+
+KERNEL_FQ void m25400_comp (KERN_ATTR_TMPS_ESALT (pdf14_tmp_t, pdf_t))
+{
+ /**
+ * modifier
+ */
+
+ const u64 gid = get_global_id (0);
+
+ if (gid >= gid_max) return;
+
+ const u64 lid = get_local_id (0);
+
+ /**
+ * digest
+ */
+
+ const u32 r0 = tmps[gid].out[0];
+ const u32 r1 = tmps[gid].out[1];
+ const u32 r2 = 0;
+ const u32 r3 = 0;
+
+ #define il_pos 0
+
+ #ifdef KERNEL_STATIC
+ #include COMPARE_M
+ #endif
+}
diff --git a/src/modules/module_25400.c b/src/modules/module_25400.c
new file mode 100644
index 000000000..a9ee18263
--- /dev/null
+++ b/src/modules/module_25400.c
@@ -0,0 +1,531 @@
+/**
+ * Author......: See docs/credits.txt
+ * License.....: MIT
+ */
+
+#include "common.h"
+#include "types.h"
+#include "modules.h"
+#include "bitops.h"
+#include "convert.h"
+#include "shared.h"
+#include "emu_inc_hash_md5.h"
+
+static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_KERNEL;
+static const u32 DGST_POS0 = 0;
+static const u32 DGST_POS1 = 1;
+static const u32 DGST_POS2 = 2;
+static const u32 DGST_POS3 = 3;
+static const u32 DGST_SIZE = DGST_SIZE_4_4;
+static const u32 HASH_CATEGORY = HASH_CATEGORY_DOCUMENTS;
+static const char *HASH_NAME = "PDF 1.4 - 1.6 (Acrobat 5 - 8) - edit password";
+static const u64 KERN_TYPE = 25400;
+static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
+ | OPTI_TYPE_NOT_ITERATED;
+static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE;
+static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
+static const char *ST_PASS = "hashcat";
+static const char *ST_HASH = "$pdf$2*3*128*-3904*1*16*631ed33746e50fba5caf56bcc39e09c6*32*842103b0a0dc886db9223b94afe2d7cd63389079b61986a4fcf70095ad630c24*32*5f9d0e4f0b39835dace0d306c40cd6b700000000000000000000000000000000";
+
+u32 module_attack_exec (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC; }
+u32 module_dgst_pos0 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0; }
+u32 module_dgst_pos1 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1; }
+u32 module_dgst_pos2 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2; }
+u32 module_dgst_pos3 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3; }
+u32 module_dgst_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE; }
+u32 module_hash_category (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY; }
+const char *module_hash_name (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME; }
+u64 module_kern_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE; }
+u32 module_opti_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE; }
+u64 module_opts_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE; }
+u32 module_salt_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE; }
+const char *module_st_hash (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH; }
+const char *module_st_pass (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS; }
+
+typedef struct pdf
+{
+ int V;
+ int R;
+ int P;
+
+ int enc_md;
+
+ u32 id_buf[8];
+ u32 u_buf[32];
+ u32 o_buf[32];
+
+ int id_len;
+ int o_len;
+ int u_len;
+
+ u32 rc4key[2];
+ u32 rc4data[2];
+
+} pdf_t;
+
+typedef struct pdf14_tmp
+{
+ u32 digest[4];
+ u32 out[4];
+
+} pdf14_tmp_t;
+
+static const char *SIGNATURE_PDF = "$pdf$";
+
+static void md5_complete_no_limit (u32 digest[4], const u32 *plain, const u32 plain_len)
+{
+ // plain = u32 tmp_md5_buf[64] so this is compatible
+
+ md5_ctx_t md5_ctx;
+
+ md5_init (&md5_ctx);
+ md5_update (&md5_ctx, plain, plain_len);
+ md5_final (&md5_ctx);
+
+ digest[0] = md5_ctx.h[0];
+ digest[1] = md5_ctx.h[1];
+ digest[2] = md5_ctx.h[2];
+ digest[3] = md5_ctx.h[3];
+}
+
+char *module_jit_build_options (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra, MAYBE_UNUSED const hashes_t *hashes, MAYBE_UNUSED const hc_device_param_t *device_param)
+{
+ char *jit_build_options = NULL;
+
+ // Extra treatment for Apple systems
+ if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE)
+ {
+ return jit_build_options;
+ }
+
+ // Intel CPU
+ if ((device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK) && (device_param->opencl_device_type & CL_DEVICE_TYPE_CPU))
+ {
+ hc_asprintf (&jit_build_options, "-D _unroll");
+ }
+
+ // ROCM
+ if ((device_param->opencl_device_vendor_id == VENDOR_ID_AMD) && (device_param->has_vperm == true))
+ {
+ hc_asprintf (&jit_build_options, "-D _unroll");
+ }
+
+ return jit_build_options;
+}
+
+u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+ const u64 esalt_size = (const u64) sizeof (pdf_t);
+
+ return esalt_size;
+}
+
+u64 module_tmp_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+ const u64 tmp_size = (const u64) sizeof (pdf14_tmp_t);
+
+ return tmp_size;
+}
+
+u32 module_kernel_threads_min (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+ const u32 kernel_threads_min = 64; // RC4
+
+ return kernel_threads_min;
+}
+
+u32 module_kernel_threads_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+ const u32 kernel_threads_max = 64; // RC4
+
+ return kernel_threads_max;
+}
+
+u32 module_pw_max (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
+{
+ const u32 pw_max = 32; // https://www.pdflib.com/knowledge-base/pdf-password-security/encryption/
+
+ return pw_max;
+}
+
+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)
+{
+ u32 *digest = (u32 *) digest_buf;
+
+ pdf_t *pdf = (pdf_t *) esalt_buf;
+
+ token_t token;
+
+ token.token_cnt = 12;
+
+ 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;
+
+ const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
+
+ if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
+
+ const u8 *V_pos = token.buf[1];
+ const u8 *R_pos = token.buf[2];
+ const u8 *bits_pos = token.buf[3];
+ const u8 *P_pos = token.buf[4];
+ const u8 *enc_md_pos = token.buf[5];
+ const u8 *id_len_pos = token.buf[6];
+ const u8 *id_buf_pos = token.buf[7];
+ const u8 *u_len_pos = token.buf[8];
+ const u8 *u_buf_pos = token.buf[9];
+ const u8 *o_len_pos = token.buf[10];
+ const u8 *o_buf_pos = token.buf[11];
+
+ // validate data
+
+ const int V = strtol ((const char *) V_pos, NULL, 10);
+ const int R = strtol ((const char *) R_pos, NULL, 10);
+ const int P = strtol ((const char *) P_pos, NULL, 10);
+
+ int vr_ok = 0;
+
+ if ((V == 2) && (R == 3)) vr_ok = 1;
+ if ((V == 4) && (R == 4)) vr_ok = 1;
+
+ if (vr_ok == 0) return (PARSER_SALT_VALUE);
+
+ const int id_len = strtol ((const char *) id_len_pos, NULL, 10);
+ const int u_len = strtol ((const char *) u_len_pos, NULL, 10);
+ const int o_len = strtol ((const char *) o_len_pos, NULL, 10);
+
+ if ((id_len != 16) && (id_len != 32)) return (PARSER_SALT_VALUE);
+
+ if (u_len != 32) return (PARSER_SALT_VALUE);
+ if (o_len != 32) return (PARSER_SALT_VALUE);
+
+ const int bits = strtol ((const char *) bits_pos, NULL, 10);
+
+ if (bits != 128) return (PARSER_SALT_VALUE);
+
+ int enc_md = 1;
+
+ if (R >= 4)
+ {
+ enc_md = strtol ((const char *) enc_md_pos, NULL, 10);
+ }
+
+ // copy data to esalt
+
+ pdf->V = V;
+ pdf->R = R;
+ pdf->P = P;
+
+ pdf->enc_md = enc_md;
+
+ pdf->id_buf[0] = hex_to_u32 (id_buf_pos + 0);
+ pdf->id_buf[1] = hex_to_u32 (id_buf_pos + 8);
+ pdf->id_buf[2] = hex_to_u32 (id_buf_pos + 16);
+ pdf->id_buf[3] = hex_to_u32 (id_buf_pos + 24);
+
+ if (id_len == 32)
+ {
+ pdf->id_buf[4] = hex_to_u32 (id_buf_pos + 32);
+ pdf->id_buf[5] = hex_to_u32 (id_buf_pos + 40);
+ pdf->id_buf[6] = hex_to_u32 (id_buf_pos + 48);
+ pdf->id_buf[7] = hex_to_u32 (id_buf_pos + 56);
+ }
+
+ pdf->id_len = id_len;
+
+ pdf->u_buf[0] = hex_to_u32 (u_buf_pos + 0);
+ pdf->u_buf[1] = hex_to_u32 (u_buf_pos + 8);
+ pdf->u_buf[2] = hex_to_u32 (u_buf_pos + 16);
+ pdf->u_buf[3] = hex_to_u32 (u_buf_pos + 24);
+ pdf->u_buf[4] = hex_to_u32 (u_buf_pos + 32);
+ pdf->u_buf[5] = hex_to_u32 (u_buf_pos + 40);
+ pdf->u_buf[6] = hex_to_u32 (u_buf_pos + 48);
+ pdf->u_buf[7] = hex_to_u32 (u_buf_pos + 56);
+ pdf->u_len = u_len;
+
+ pdf->o_buf[0] = hex_to_u32 (o_buf_pos + 0);
+ pdf->o_buf[1] = hex_to_u32 (o_buf_pos + 8);
+ pdf->o_buf[2] = hex_to_u32 (o_buf_pos + 16);
+ pdf->o_buf[3] = hex_to_u32 (o_buf_pos + 24);
+ pdf->o_buf[4] = hex_to_u32 (o_buf_pos + 32);
+ pdf->o_buf[5] = hex_to_u32 (o_buf_pos + 40);
+ pdf->o_buf[6] = hex_to_u32 (o_buf_pos + 48);
+ pdf->o_buf[7] = hex_to_u32 (o_buf_pos + 56);
+ pdf->o_len = o_len;
+
+ // precompute rc4 data for later use
+
+ u32 padding[8] =
+ {
+ 0x5e4ebf28,
+ 0x418a754e,
+ 0x564e0064,
+ 0x0801faff,
+ 0xb6002e2e,
+ 0x803e68d0,
+ 0xfea90c2f,
+ 0x7a695364
+ };
+
+ // md5
+
+ u32 salt_pc_block[32] = { 0 };
+
+ u8 *salt_pc_ptr = (u8 *) salt_pc_block;
+
+ memcpy (salt_pc_ptr, padding, 32);
+ memcpy (salt_pc_ptr + 32, pdf->id_buf, pdf->id_len);
+
+ u32 salt_pc_digest[4] = { 0 };
+
+ md5_complete_no_limit (salt_pc_digest, salt_pc_block, 32 + pdf->id_len);
+
+ pdf->rc4data[0] = salt_pc_digest[0];
+ pdf->rc4data[1] = salt_pc_digest[1];
+
+ // we use ID for salt, maybe needs to change, we will see...
+
+ salt->salt_buf[0] = pdf->id_buf[0];
+ salt->salt_buf[1] = pdf->id_buf[1];
+ salt->salt_buf[2] = pdf->id_buf[2];
+ salt->salt_buf[3] = pdf->id_buf[3];
+ salt->salt_buf[4] = pdf->u_buf[0];
+ salt->salt_buf[5] = pdf->u_buf[1];
+ salt->salt_buf[6] = pdf->o_buf[0];
+ salt->salt_buf[7] = pdf->o_buf[1];
+ salt->salt_len = pdf->id_len + 16;
+
+ salt->salt_iter = (50 + 20);
+
+ digest[0] = pdf->u_buf[0];
+ digest[1] = pdf->u_buf[1];
+ digest[2] = 0;
+ digest[3] = 0;
+
+ return (PARSER_OK);
+}
+
+int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
+{
+ const pdf_t *pdf = (const pdf_t *) esalt_buf;
+
+ int line_len = 0;
+
+ if (pdf->id_len == 32)
+ {
+ line_len = snprintf (line_buf, line_size, "$pdf$%d*%d*%d*%d*%d*%d*%08x%08x%08x%08x%08x%08x%08x%08x*%d*%08x%08x%08x%08x%08x%08x%08x%08x*%d*%08x%08x%08x%08x%08x%08x%08x%08x",
+ pdf->V,
+ pdf->R,
+ 128,
+ pdf->P,
+ pdf->enc_md,
+ pdf->id_len,
+ byte_swap_32 (pdf->id_buf[0]),
+ byte_swap_32 (pdf->id_buf[1]),
+ byte_swap_32 (pdf->id_buf[2]),
+ byte_swap_32 (pdf->id_buf[3]),
+ byte_swap_32 (pdf->id_buf[4]),
+ byte_swap_32 (pdf->id_buf[5]),
+ byte_swap_32 (pdf->id_buf[6]),
+ byte_swap_32 (pdf->id_buf[7]),
+ pdf->u_len,
+ byte_swap_32 (pdf->u_buf[0]),
+ byte_swap_32 (pdf->u_buf[1]),
+ byte_swap_32 (pdf->u_buf[2]),
+ byte_swap_32 (pdf->u_buf[3]),
+ byte_swap_32 (pdf->u_buf[4]),
+ byte_swap_32 (pdf->u_buf[5]),
+ byte_swap_32 (pdf->u_buf[6]),
+ byte_swap_32 (pdf->u_buf[7]),
+ pdf->o_len,
+ byte_swap_32 (pdf->o_buf[0]),
+ byte_swap_32 (pdf->o_buf[1]),
+ byte_swap_32 (pdf->o_buf[2]),
+ byte_swap_32 (pdf->o_buf[3]),
+ byte_swap_32 (pdf->o_buf[4]),
+ byte_swap_32 (pdf->o_buf[5]),
+ byte_swap_32 (pdf->o_buf[6]),
+ byte_swap_32 (pdf->o_buf[7])
+ );
+ }
+ else
+ {
+ line_len = snprintf (line_buf, line_size, "$pdf$%d*%d*%d*%d*%d*%d*%08x%08x%08x%08x*%d*%08x%08x%08x%08x%08x%08x%08x%08x*%d*%08x%08x%08x%08x%08x%08x%08x%08x",
+ pdf->V,
+ pdf->R,
+ 128,
+ pdf->P,
+ pdf->enc_md,
+ pdf->id_len,
+ byte_swap_32 (pdf->id_buf[0]),
+ byte_swap_32 (pdf->id_buf[1]),
+ byte_swap_32 (pdf->id_buf[2]),
+ byte_swap_32 (pdf->id_buf[3]),
+ pdf->u_len,
+ byte_swap_32 (pdf->u_buf[0]),
+ byte_swap_32 (pdf->u_buf[1]),
+ byte_swap_32 (pdf->u_buf[2]),
+ byte_swap_32 (pdf->u_buf[3]),
+ byte_swap_32 (pdf->u_buf[4]),
+ byte_swap_32 (pdf->u_buf[5]),
+ byte_swap_32 (pdf->u_buf[6]),
+ byte_swap_32 (pdf->u_buf[7]),
+ pdf->o_len,
+ byte_swap_32 (pdf->o_buf[0]),
+ byte_swap_32 (pdf->o_buf[1]),
+ byte_swap_32 (pdf->o_buf[2]),
+ byte_swap_32 (pdf->o_buf[3]),
+ byte_swap_32 (pdf->o_buf[4]),
+ byte_swap_32 (pdf->o_buf[5]),
+ byte_swap_32 (pdf->o_buf[6]),
+ byte_swap_32 (pdf->o_buf[7])
+ );
+ }
+
+ return line_len;
+}
+
+void module_init (module_ctx_t *module_ctx)
+{
+ module_ctx->module_context_size = MODULE_CONTEXT_SIZE_CURRENT;
+ module_ctx->module_interface_version = MODULE_INTERFACE_VERSION_CURRENT;
+
+ module_ctx->module_attack_exec = module_attack_exec;
+ module_ctx->module_benchmark_esalt = MODULE_DEFAULT;
+ module_ctx->module_benchmark_hook_salt = MODULE_DEFAULT;
+ module_ctx->module_benchmark_mask = MODULE_DEFAULT;
+ module_ctx->module_benchmark_salt = MODULE_DEFAULT;
+ module_ctx->module_build_plain_postprocess = MODULE_DEFAULT;
+ module_ctx->module_deep_comp_kernel = MODULE_DEFAULT;
+ module_ctx->module_dgst_pos0 = module_dgst_pos0;
+ module_ctx->module_dgst_pos1 = module_dgst_pos1;
+ module_ctx->module_dgst_pos2 = module_dgst_pos2;
+ module_ctx->module_dgst_pos3 = module_dgst_pos3;
+ module_ctx->module_dgst_size = module_dgst_size;
+ module_ctx->module_dictstat_disable = MODULE_DEFAULT;
+ module_ctx->module_esalt_size = module_esalt_size;
+ module_ctx->module_extra_buffer_size = MODULE_DEFAULT;
+ module_ctx->module_extra_tmp_size = MODULE_DEFAULT;
+ module_ctx->module_forced_outfile_format = MODULE_DEFAULT;
+ module_ctx->module_hash_binary_count = MODULE_DEFAULT;
+ module_ctx->module_hash_binary_parse = MODULE_DEFAULT;
+ module_ctx->module_hash_binary_save = MODULE_DEFAULT;
+ module_ctx->module_hash_decode_potfile = MODULE_DEFAULT;
+ module_ctx->module_hash_decode_zero_hash = MODULE_DEFAULT;
+ module_ctx->module_hash_decode = module_hash_decode;
+ module_ctx->module_hash_encode_status = MODULE_DEFAULT;
+ module_ctx->module_hash_encode_potfile = MODULE_DEFAULT;
+ module_ctx->module_hash_encode = module_hash_encode;
+ module_ctx->module_hash_init_selftest = MODULE_DEFAULT;
+ module_ctx->module_hash_mode = MODULE_DEFAULT;
+ module_ctx->module_hash_category = module_hash_category;
+ module_ctx->module_hash_name = module_hash_name;
+ module_ctx->module_hashes_count_min = MODULE_DEFAULT;
+ module_ctx->module_hashes_count_max = MODULE_DEFAULT;
+ module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
+ module_ctx->module_hook_extra_param_size = MODULE_DEFAULT;
+ module_ctx->module_hook_extra_param_init = MODULE_DEFAULT;
+ module_ctx->module_hook_extra_param_term = MODULE_DEFAULT;
+ module_ctx->module_hook12 = MODULE_DEFAULT;
+ module_ctx->module_hook23 = MODULE_DEFAULT;
+ module_ctx->module_hook_salt_size = MODULE_DEFAULT;
+ module_ctx->module_hook_size = MODULE_DEFAULT;
+ module_ctx->module_jit_build_options = module_jit_build_options;
+ module_ctx->module_jit_cache_disable = MODULE_DEFAULT;
+ module_ctx->module_kernel_accel_max = MODULE_DEFAULT;
+ module_ctx->module_kernel_accel_min = MODULE_DEFAULT;
+ module_ctx->module_kernel_loops_max = MODULE_DEFAULT;
+ module_ctx->module_kernel_loops_min = MODULE_DEFAULT;
+ module_ctx->module_kernel_threads_max = module_kernel_threads_max;
+ module_ctx->module_kernel_threads_min = module_kernel_threads_min;
+ module_ctx->module_kern_type = module_kern_type;
+ module_ctx->module_kern_type_dynamic = MODULE_DEFAULT;
+ module_ctx->module_opti_type = module_opti_type;
+ module_ctx->module_opts_type = module_opts_type;
+ module_ctx->module_outfile_check_disable = MODULE_DEFAULT;
+ module_ctx->module_outfile_check_nocomp = MODULE_DEFAULT;
+ module_ctx->module_potfile_custom_check = MODULE_DEFAULT;
+ module_ctx->module_potfile_disable = MODULE_DEFAULT;
+ module_ctx->module_potfile_keep_all_hashes = MODULE_DEFAULT;
+ module_ctx->module_pwdump_column = MODULE_DEFAULT;
+ module_ctx->module_pw_max = module_pw_max;
+ module_ctx->module_pw_min = MODULE_DEFAULT;
+ module_ctx->module_salt_max = MODULE_DEFAULT;
+ module_ctx->module_salt_min = MODULE_DEFAULT;
+ module_ctx->module_salt_type = module_salt_type;
+ module_ctx->module_separator = MODULE_DEFAULT;
+ module_ctx->module_st_hash = module_st_hash;
+ module_ctx->module_st_pass = module_st_pass;
+ module_ctx->module_tmp_size = module_tmp_size;
+ module_ctx->module_unstable_warning = MODULE_DEFAULT;
+ module_ctx->module_warmup_disable = MODULE_DEFAULT;
+}