mirror of https://github.com/hashcat/hashcat
Added hash-mode: Kerberos 5, etype 18, DB
This commit is contained in:
Gabriele Gristina
parent
580afa985d
commit
0d282bbfb3
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@ -0,0 +1,424 @@
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/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#define NEW_SIMD_CODE
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#ifdef KERNEL_STATIC
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#include M2S(INCLUDE_PATH/inc_vendor.h)
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#include M2S(INCLUDE_PATH/inc_types.h)
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#include M2S(INCLUDE_PATH/inc_platform.cl)
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#include M2S(INCLUDE_PATH/inc_common.cl)
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#include M2S(INCLUDE_PATH/inc_simd.cl)
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#include M2S(INCLUDE_PATH/inc_hash_sha1.cl)
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#include M2S(INCLUDE_PATH/inc_cipher_aes.cl)
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#endif
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#define COMPARE_S M2S(INCLUDE_PATH/inc_comp_single.cl)
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#define COMPARE_M M2S(INCLUDE_PATH/inc_comp_multi.cl)
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typedef struct krb5db_18
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{
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u32 user[128];
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u32 domain[128];
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u32 account_info[512];
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u32 account_info_len;
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} krb5db_18_t;
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typedef struct krb5db_18_tmp
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{
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u32 ipad[5];
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u32 opad[5];
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u32 dgst[16];
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u32 out[16];
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} krb5db_18_tmp_t;
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DECLSPEC void aes256_encrypt_cbc (PRIVATE_AS const u32 *aes_ks, PRIVATE_AS u32 *aes_iv, PRIVATE_AS const u32 *in, PRIVATE_AS u32 *out, SHM_TYPE u32 *s_te0, SHM_TYPE u32 *s_te1, SHM_TYPE u32 *s_te2, SHM_TYPE u32 *s_te3, SHM_TYPE u32 *s_te4)
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{
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u32 data[4];
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data[0] = hc_swap32_S (in[0]);
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data[1] = hc_swap32_S (in[1]);
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data[2] = hc_swap32_S (in[2]);
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data[3] = hc_swap32_S (in[3]);
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data[0] ^= aes_iv[0];
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data[1] ^= aes_iv[1];
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data[2] ^= aes_iv[2];
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data[3] ^= aes_iv[3];
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aes256_encrypt (aes_ks, data, out, s_te0, s_te1, s_te2, s_te3, s_te4);
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aes_iv[0] = out[0];
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aes_iv[1] = out[1];
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aes_iv[2] = out[2];
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aes_iv[3] = out[3];
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out[0] = hc_swap32_S (out[0]);
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out[1] = hc_swap32_S (out[1]);
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out[2] = hc_swap32_S (out[2]);
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out[3] = hc_swap32_S (out[3]);
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}
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DECLSPEC void aes256_decrypt_cbc (PRIVATE_AS const u32 *ks1, PRIVATE_AS const u32 *in, PRIVATE_AS u32 *out, PRIVATE_AS u32 *essiv, SHM_TYPE u32 *s_td0, SHM_TYPE u32 *s_td1, SHM_TYPE u32 *s_td2, SHM_TYPE u32 *s_td3, SHM_TYPE u32 *s_td4)
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{
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aes256_decrypt (ks1, in, out, s_td0, s_td1, s_td2, s_td3, s_td4);
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out[0] ^= essiv[0];
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out[1] ^= essiv[1];
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out[2] ^= essiv[2];
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out[3] ^= essiv[3];
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essiv[0] = in[0];
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essiv[1] = in[1];
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essiv[2] = in[2];
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essiv[3] = in[3];
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}
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DECLSPEC void hmac_sha1_run_V (PRIVATE_AS u32x *w0, PRIVATE_AS u32x *w1, PRIVATE_AS u32x *w2, PRIVATE_AS u32x *w3, PRIVATE_AS u32x *ipad, PRIVATE_AS u32x *opad, PRIVATE_AS u32x *digest)
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{
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digest[0] = ipad[0];
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digest[1] = ipad[1];
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digest[2] = ipad[2];
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digest[3] = ipad[3];
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digest[4] = ipad[4];
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sha1_transform_vector (w0, w1, w2, w3, digest);
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w0[0] = digest[0];
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w0[1] = digest[1];
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w0[2] = digest[2];
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w0[3] = digest[3];
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w1[0] = digest[4];
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w1[1] = 0x80000000;
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w1[2] = 0;
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w1[3] = 0;
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w2[0] = 0;
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w2[1] = 0;
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w2[2] = 0;
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w2[3] = 0;
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w3[0] = 0;
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w3[1] = 0;
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w3[2] = 0;
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w3[3] = (64 + 20) * 8;
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digest[0] = opad[0];
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digest[1] = opad[1];
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digest[2] = opad[2];
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digest[3] = opad[3];
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digest[4] = opad[4];
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sha1_transform_vector (w0, w1, w2, w3, digest);
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}
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KERNEL_FQ void m28900_init (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t))
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{
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/**
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* base
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*/
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const u64 gid = get_global_id (0);
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if (gid >= GID_CNT) return;
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/**
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* main
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*/
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/* initialize hmac-sha1 for pbkdf2(password, account, 4096, account_len) */
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sha1_hmac_ctx_t sha1_hmac_ctx;
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sha1_hmac_init_global_swap (&sha1_hmac_ctx, pws[gid].i, pws[gid].pw_len);
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tmps[gid].ipad[0] = sha1_hmac_ctx.ipad.h[0];
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tmps[gid].ipad[1] = sha1_hmac_ctx.ipad.h[1];
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tmps[gid].ipad[2] = sha1_hmac_ctx.ipad.h[2];
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tmps[gid].ipad[3] = sha1_hmac_ctx.ipad.h[3];
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tmps[gid].ipad[4] = sha1_hmac_ctx.ipad.h[4];
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tmps[gid].opad[0] = sha1_hmac_ctx.opad.h[0];
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tmps[gid].opad[1] = sha1_hmac_ctx.opad.h[1];
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tmps[gid].opad[2] = sha1_hmac_ctx.opad.h[2];
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tmps[gid].opad[3] = sha1_hmac_ctx.opad.h[3];
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tmps[gid].opad[4] = sha1_hmac_ctx.opad.h[4];
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sha1_hmac_update_global_swap (&sha1_hmac_ctx, esalt_bufs[DIGESTS_OFFSET_HOST].account_info, esalt_bufs[DIGESTS_OFFSET_HOST].account_info_len);
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for (u32 i = 0, j = 1; i < 8; i += 5, j += 1)
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{
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sha1_hmac_ctx_t sha1_hmac_ctx2 = sha1_hmac_ctx;
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u32 w0[4];
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u32 w1[4];
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u32 w2[4];
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u32 w3[4];
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w0[0] = j;
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w0[1] = 0;
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w0[2] = 0;
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w0[3] = 0;
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w1[0] = 0;
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w1[1] = 0;
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w1[2] = 0;
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w1[3] = 0;
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w2[0] = 0;
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w2[1] = 0;
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w2[2] = 0;
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w2[3] = 0;
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w3[0] = 0;
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w3[1] = 0;
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w3[2] = 0;
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w3[3] = 0;
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sha1_hmac_update_64 (&sha1_hmac_ctx2, w0, w1, w2, w3, 4);
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sha1_hmac_final (&sha1_hmac_ctx2);
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tmps[gid].dgst[i + 0] = sha1_hmac_ctx2.opad.h[0];
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tmps[gid].dgst[i + 1] = sha1_hmac_ctx2.opad.h[1];
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tmps[gid].dgst[i + 2] = sha1_hmac_ctx2.opad.h[2];
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tmps[gid].dgst[i + 3] = sha1_hmac_ctx2.opad.h[3];
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tmps[gid].dgst[i + 4] = sha1_hmac_ctx2.opad.h[4];
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tmps[gid].out[i + 0] = tmps[gid].dgst[i + 0];
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tmps[gid].out[i + 1] = tmps[gid].dgst[i + 1];
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tmps[gid].out[i + 2] = tmps[gid].dgst[i + 2];
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tmps[gid].out[i + 3] = tmps[gid].dgst[i + 3];
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tmps[gid].out[i + 4] = tmps[gid].dgst[i + 4];
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}
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}
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KERNEL_FQ void m28900_loop (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t))
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{
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/**
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* base
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*/
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const u64 gid = get_global_id (0);
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if ((gid * VECT_SIZE) >= GID_CNT) return;
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u32x ipad[5];
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u32x opad[5];
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ipad[0] = packv (tmps, ipad, gid, 0);
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ipad[1] = packv (tmps, ipad, gid, 1);
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ipad[2] = packv (tmps, ipad, gid, 2);
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ipad[3] = packv (tmps, ipad, gid, 3);
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ipad[4] = packv (tmps, ipad, gid, 4);
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opad[0] = packv (tmps, opad, gid, 0);
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opad[1] = packv (tmps, opad, gid, 1);
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opad[2] = packv (tmps, opad, gid, 2);
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opad[3] = packv (tmps, opad, gid, 3);
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opad[4] = packv (tmps, opad, gid, 4);
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for (u32 i = 0; i < 8; i += 5)
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{
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u32x dgst[5];
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u32x out[5];
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dgst[0] = packv (tmps, dgst, gid, i + 0);
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dgst[1] = packv (tmps, dgst, gid, i + 1);
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dgst[2] = packv (tmps, dgst, gid, i + 2);
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dgst[3] = packv (tmps, dgst, gid, i + 3);
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dgst[4] = packv (tmps, dgst, gid, i + 4);
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out[0] = packv (tmps, out, gid, i + 0);
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out[1] = packv (tmps, out, gid, i + 1);
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out[2] = packv (tmps, out, gid, i + 2);
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out[3] = packv (tmps, out, gid, i + 3);
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out[4] = packv (tmps, out, gid, i + 4);
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for (u32 j = 0; j < LOOP_CNT; j++)
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{
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u32x w0[4];
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u32x w1[4];
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u32x w2[4];
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u32x w3[4];
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w0[0] = dgst[0];
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w0[1] = dgst[1];
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w0[2] = dgst[2];
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w0[3] = dgst[3];
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w1[0] = dgst[4];
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w1[1] = 0x80000000;
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w1[2] = 0;
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w1[3] = 0;
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w2[0] = 0;
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w2[1] = 0;
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w2[2] = 0;
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w2[3] = 0;
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w3[0] = 0;
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w3[1] = 0;
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w3[2] = 0;
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w3[3] = (64 + 20) * 8;
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hmac_sha1_run_V (w0, w1, w2, w3, ipad, opad, dgst);
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out[0] ^= dgst[0];
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out[1] ^= dgst[1];
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out[2] ^= dgst[2];
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out[3] ^= dgst[3];
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out[4] ^= dgst[4];
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}
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unpackv (tmps, dgst, gid, i + 0, dgst[0]);
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unpackv (tmps, dgst, gid, i + 1, dgst[1]);
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unpackv (tmps, dgst, gid, i + 2, dgst[2]);
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unpackv (tmps, dgst, gid, i + 3, dgst[3]);
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unpackv (tmps, dgst, gid, i + 4, dgst[4]);
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unpackv (tmps, out, gid, i + 0, out[0]);
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unpackv (tmps, out, gid, i + 1, out[1]);
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unpackv (tmps, out, gid, i + 2, out[2]);
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unpackv (tmps, out, gid, i + 3, out[3]);
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unpackv (tmps, out, gid, i + 4, out[4]);
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}
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}
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KERNEL_FQ void m28900_comp (KERN_ATTR_TMPS_ESALT (krb5db_18_tmp_t, krb5db_18_t))
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{
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/**
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* base
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*/
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const u64 gid = get_global_id (0);
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const u64 lid = get_local_id (0);
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const u64 lsz = get_local_size (0);
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/**
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* aes shared
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*/
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#ifdef REAL_SHM
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LOCAL_VK u32 s_td0[256];
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LOCAL_VK u32 s_td1[256];
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LOCAL_VK u32 s_td2[256];
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LOCAL_VK u32 s_td3[256];
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LOCAL_VK u32 s_td4[256];
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LOCAL_VK u32 s_te0[256];
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LOCAL_VK u32 s_te1[256];
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LOCAL_VK u32 s_te2[256];
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LOCAL_VK u32 s_te3[256];
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LOCAL_VK u32 s_te4[256];
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for (u32 i = lid; i < 256; i += lsz)
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{
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s_td0[i] = td0[i];
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s_td1[i] = td1[i];
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s_td2[i] = td2[i];
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s_td3[i] = td3[i];
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s_td4[i] = td4[i];
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s_te0[i] = te0[i];
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s_te1[i] = te1[i];
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s_te2[i] = te2[i];
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s_te3[i] = te3[i];
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s_te4[i] = te4[i];
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}
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SYNC_THREADS ();
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#else
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CONSTANT_AS u32a *s_td0 = td0;
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CONSTANT_AS u32a *s_td1 = td1;
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CONSTANT_AS u32a *s_td2 = td2;
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CONSTANT_AS u32a *s_td3 = td3;
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CONSTANT_AS u32a *s_td4 = td4;
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CONSTANT_AS u32a *s_te0 = te0;
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CONSTANT_AS u32a *s_te1 = te1;
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CONSTANT_AS u32a *s_te2 = te2;
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CONSTANT_AS u32a *s_te3 = te3;
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CONSTANT_AS u32a *s_te4 = te4;
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#endif
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if (gid >= GID_CNT) return;
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/*
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at this point, the output ('seed') will be used to generate AES keys:
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key_bytes = derive(seed, 'kerberos'.encode(), seedsize)
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'key_bytes' will be the AES key used to generate 'ke' and 'ki'
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'ke' will be the AES key to decrypt the ticket
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'ki' will be the key to compute the final HMAC
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*/
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u32 nfolded[4];
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// we can precompute _nfold('kerberos', 16)
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nfolded[0] = 0x6b657262;
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nfolded[1] = 0x65726f73;
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nfolded[2] = 0x7b9b5b2b;
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nfolded[3] = 0x93132b93;
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// then aes_cbc encrypt this nfolded value with 'seed' as key along with a null IV
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u32 aes_key[8];
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aes_key[0] = hc_swap32_S (tmps[gid].out[0]);
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aes_key[1] = hc_swap32_S (tmps[gid].out[1]);
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aes_key[2] = hc_swap32_S (tmps[gid].out[2]);
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aes_key[3] = hc_swap32_S (tmps[gid].out[3]);
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aes_key[4] = hc_swap32_S (tmps[gid].out[4]);
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aes_key[5] = hc_swap32_S (tmps[gid].out[5]);
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aes_key[6] = hc_swap32_S (tmps[gid].out[6]);
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aes_key[7] = hc_swap32_S (tmps[gid].out[7]);
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u32 aes_iv[4];
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aes_iv[0] = 0;
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aes_iv[1] = 0;
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aes_iv[2] = 0;
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aes_iv[3] = 0;
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u32 aes_ks[60];
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aes256_set_encrypt_key (aes_ks, aes_key, s_te0, s_te1, s_te2, s_te3);
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u32 key_bytes[8];
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u32 out[4];
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aes256_encrypt_cbc (aes_ks, aes_iv, nfolded, out, s_te0, s_te1, s_te2, s_te3, s_te4);
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key_bytes[0] = out[0];
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key_bytes[1] = out[1];
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key_bytes[2] = out[2];
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key_bytes[3] = out[3];
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/*
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aes_iv[0] = 0;
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aes_iv[1] = 0;
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aes_iv[2] = 0;
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aes_iv[3] = 0;
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aes256_encrypt_cbc (aes_ks, aes_iv, out, out, s_te0, s_te1, s_te2, s_te3, s_te4);
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|
||||
key_bytes[4] = out[0];
|
||||
key_bytes[5] = out[1];
|
||||
key_bytes[6] = out[2];
|
||||
key_bytes[7] = out[3];
|
||||
*/
|
||||
|
||||
const u32 r0 = key_bytes[0];
|
||||
const u32 r1 = key_bytes[1];
|
||||
const u32 r2 = key_bytes[2];
|
||||
const u32 r3 = key_bytes[3];
|
||||
|
||||
#define il_pos 0
|
||||
|
||||
#ifdef KERNEL_STATIC
|
||||
#include COMPARE_M
|
||||
#endif
|
||||
}
|
||||
|
|
@ -0,0 +1,342 @@
|
|||
/**
|
||||
* 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"
|
||||
|
||||
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_8;
|
||||
static const u32 HASH_CATEGORY = HASH_CATEGORY_NETWORK_PROTOCOL;
|
||||
static const char *HASH_NAME = "Kerberos 5, etype 18, DB";
|
||||
static const u64 KERN_TYPE = 28900;
|
||||
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
|
||||
| OPTI_TYPE_NOT_ITERATED
|
||||
| OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
|
||||
static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE;
|
||||
static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
|
||||
static const char *ST_PASS = "password";
|
||||
static const char *ST_HASH = "$krb5db$18$test$TEST.LOCAL$487addf1717899f2ee45c4b67e159d54adec46d086f339b88fd7deaa25d49a65";
|
||||
|
||||
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 krb5db_18
|
||||
{
|
||||
u32 user[128];
|
||||
u32 domain[128];
|
||||
u32 account_info[512];
|
||||
u32 account_info_len;
|
||||
|
||||
} krb5db_18_t;
|
||||
|
||||
typedef struct krb5db_18_tmp
|
||||
{
|
||||
u32 ipad[5];
|
||||
u32 opad[5];
|
||||
u32 dgst[16];
|
||||
u32 out[16];
|
||||
|
||||
} krb5db_18_tmp_t;
|
||||
|
||||
static const char *SIGNATURE_KRB5DB = "$krb5db$18$";
|
||||
|
||||
bool module_unstable_warning (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 hc_device_param_t *device_param)
|
||||
{
|
||||
// AMD Radeon Pro W5700X Compute Engine; 1.2 (Apr 22 2021 21:54:44); 11.3.1; 20E241
|
||||
if ((device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE) && (device_param->opencl_device_type & CL_DEVICE_TYPE_GPU))
|
||||
{
|
||||
if (device_param->is_metal == false)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
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 (krb5db_18_tmp_t);
|
||||
|
||||
return tmp_size;
|
||||
}
|
||||
|
||||
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 (krb5db_18_t);
|
||||
|
||||
return esalt_size;
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
krb5db_18_t *krb5db = (krb5db_18_t *) esalt_buf;
|
||||
|
||||
hc_token_t token;
|
||||
|
||||
token.signatures_cnt = 1;
|
||||
token.signatures_buf[0] = SIGNATURE_KRB5DB;
|
||||
|
||||
token.len[0] = 11;
|
||||
token.attr[0] = TOKEN_ATTR_FIXED_LENGTH
|
||||
| TOKEN_ATTR_VERIFY_SIGNATURE;
|
||||
|
||||
/**
|
||||
* $krb5db$18$user$realm$hash
|
||||
* $krb5db$18$user$realm$*spn*$hash
|
||||
*/
|
||||
|
||||
// assume no signature found
|
||||
if (line_len < 11) return (PARSER_SALT_LENGTH);
|
||||
|
||||
char *spn_info_start = strchr ((const char *) line_buf + 11 + 1, '*');
|
||||
|
||||
int is_spn_provided = 0;
|
||||
|
||||
// assume $krb5db$17$user$realm$checksum$edata2
|
||||
if (spn_info_start == NULL)
|
||||
{
|
||||
token.token_cnt = 4;
|
||||
|
||||
token.sep[1] = '$';
|
||||
token.len_min[1] = 1;
|
||||
token.len_max[1] = 512;
|
||||
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH;
|
||||
|
||||
token.sep[2] = '$';
|
||||
token.len_min[2] = 1;
|
||||
token.len_max[2] = 512;
|
||||
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH;
|
||||
|
||||
token.sep[3] = '$';
|
||||
token.len_min[3] = 64;
|
||||
token.len_max[3] = 64;
|
||||
token.attr[3] = TOKEN_ATTR_VERIFY_LENGTH
|
||||
| TOKEN_ATTR_VERIFY_HEX;
|
||||
|
||||
}
|
||||
// assume $krb5db$18$user$realm$*spn*$hash
|
||||
else
|
||||
{
|
||||
char *spn_info_stop = strchr ((const char *) spn_info_start + 1, '*');
|
||||
|
||||
if (spn_info_stop == NULL) return (PARSER_SEPARATOR_UNMATCHED);
|
||||
|
||||
spn_info_stop++; // we want the * $char included
|
||||
spn_info_stop++; // we want the $ char included
|
||||
|
||||
const int spn_info_len = spn_info_stop - spn_info_start;
|
||||
|
||||
token.token_cnt = 5;
|
||||
|
||||
token.sep[1] = '$';
|
||||
token.len_min[1] = 1;
|
||||
token.len_max[1] = 512;
|
||||
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH;
|
||||
|
||||
token.sep[2] = '$';
|
||||
token.len_min[2] = 1;
|
||||
token.len_max[2] = 512;
|
||||
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH;
|
||||
|
||||
token.len[3] = spn_info_len;
|
||||
token.attr[3] = TOKEN_ATTR_FIXED_LENGTH;
|
||||
|
||||
token.sep[4] = '$';
|
||||
token.len_min[4] = 64;
|
||||
token.len_max[4] = 64;
|
||||
token.attr[4] = TOKEN_ATTR_VERIFY_LENGTH
|
||||
| TOKEN_ATTR_VERIFY_HEX;
|
||||
|
||||
is_spn_provided = 1;
|
||||
}
|
||||
|
||||
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
|
||||
|
||||
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
|
||||
|
||||
const u8 *user_pos;
|
||||
const u8 *domain_pos;
|
||||
const u8 *checksum_pos;
|
||||
|
||||
int user_len;
|
||||
int domain_len;
|
||||
int account_info_len;
|
||||
|
||||
user_pos = token.buf[1];
|
||||
user_len = token.len[1];
|
||||
|
||||
memcpy (krb5db->user, user_pos, user_len);
|
||||
|
||||
domain_pos = token.buf[2];
|
||||
domain_len = token.len[2];
|
||||
|
||||
memcpy (krb5db->domain, domain_pos, domain_len);
|
||||
|
||||
checksum_pos = token.buf[3 + is_spn_provided];
|
||||
|
||||
account_info_len = token.len[2] + token.len[1];
|
||||
|
||||
u8 *account_info_ptr = (u8 *) krb5db->account_info;
|
||||
|
||||
// domain must be uppercase
|
||||
|
||||
u8 domain[128];
|
||||
|
||||
memcpy (domain, domain_pos, domain_len);
|
||||
uppercase (domain, domain_len);
|
||||
|
||||
memcpy (account_info_ptr, domain, domain_len);
|
||||
memcpy (account_info_ptr + domain_len, user_pos, user_len);
|
||||
|
||||
krb5db->account_info_len = account_info_len;
|
||||
|
||||
// salt
|
||||
|
||||
salt->salt_buf[0] = krb5db->account_info[0];
|
||||
salt->salt_buf[1] = krb5db->account_info[1];
|
||||
salt->salt_buf[2] = krb5db->account_info[2];
|
||||
salt->salt_buf[3] = krb5db->account_info[3];
|
||||
|
||||
salt->salt_len = 16;
|
||||
|
||||
salt->salt_iter = 4096 - 1;
|
||||
|
||||
// digest
|
||||
|
||||
digest[0] = byte_swap_32 (hex_to_u32 (checksum_pos + 0));
|
||||
digest[1] = byte_swap_32 (hex_to_u32 (checksum_pos + 8));
|
||||
digest[2] = byte_swap_32 (hex_to_u32 (checksum_pos + 16));
|
||||
digest[3] = byte_swap_32 (hex_to_u32 (checksum_pos + 24));
|
||||
digest[4] = byte_swap_32 (hex_to_u32 (checksum_pos + 32));
|
||||
digest[5] = byte_swap_32 (hex_to_u32 (checksum_pos + 40));
|
||||
digest[6] = byte_swap_32 (hex_to_u32 (checksum_pos + 48));
|
||||
digest[7] = byte_swap_32 (hex_to_u32 (checksum_pos + 56));
|
||||
|
||||
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 u32 *digest = (const u32 *) digest_buf;
|
||||
|
||||
const krb5db_18_t *krb5db = (const krb5db_18_t *) esalt_buf;
|
||||
|
||||
const int line_len = snprintf (line_buf, line_size, "%s%s$%s$%08x%08x%08x%08x%08x%08x%08x%08x",
|
||||
SIGNATURE_KRB5DB,
|
||||
(char *) krb5db->user,
|
||||
(char *) krb5db->domain,
|
||||
digest[0],
|
||||
digest[1],
|
||||
digest[2],
|
||||
digest[3],
|
||||
digest[4],
|
||||
digest[5],
|
||||
digest[6],
|
||||
digest[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_deprecated_notice = 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_extra_tuningdb_block = 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_postprocess = 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_DEFAULT;
|
||||
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_DEFAULT;
|
||||
module_ctx->module_kernel_threads_min = MODULE_DEFAULT;
|
||||
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_DEFAULT;
|
||||
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_unstable_warning;
|
||||
module_ctx->module_warmup_disable = MODULE_DEFAULT;
|
||||
}
|
||||
|
|
@ -0,0 +1,105 @@
|
|||
#!/usr/bin/env perl
|
||||
|
||||
##
|
||||
## Author......: See docs/credits.txt
|
||||
## License.....: MIT
|
||||
##
|
||||
|
||||
use strict;
|
||||
use warnings;
|
||||
|
||||
use Digest::SHA qw (hmac_sha1);
|
||||
use Crypt::Mode::CBC;
|
||||
use Crypt::PBKDF2;
|
||||
|
||||
sub byte2hex
|
||||
{
|
||||
my $input = shift;
|
||||
return unpack ("H*", $input);
|
||||
}
|
||||
|
||||
sub hex2byte
|
||||
{
|
||||
my $input = shift;
|
||||
return pack ("H*", $input);
|
||||
}
|
||||
|
||||
sub pad
|
||||
{
|
||||
my $n = shift;
|
||||
my $size = shift;
|
||||
|
||||
return (~$n + 1) & ($size - 1);
|
||||
}
|
||||
|
||||
sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }
|
||||
|
||||
sub module_generate_hash
|
||||
{
|
||||
my $word = shift;
|
||||
my $salt = shift;
|
||||
my $user = shift // "user";
|
||||
my $realm = shift // "realm";
|
||||
|
||||
my $mysalt = uc $realm;
|
||||
$mysalt = $mysalt . $user;
|
||||
|
||||
# first we generate the 'seed'
|
||||
my $iter = 4096;
|
||||
my $pbkdf2 = Crypt::PBKDF2->new
|
||||
(
|
||||
hash_class => 'HMACSHA1',
|
||||
iterations => $iter,
|
||||
output_len => 32
|
||||
);
|
||||
|
||||
my $b_seed = $pbkdf2->PBKDF2 ($mysalt, $word);
|
||||
|
||||
# we can precompute this
|
||||
my $b_kerberos_nfolded = hex2byte ('6b65726265726f737b9b5b2b93132b93');
|
||||
|
||||
my $b_iv = hex2byte ('0' x 32);
|
||||
|
||||
# 'key_bytes' will be the AES key used to generate 'ki' (for final hmac-sha1)
|
||||
# and 'ke' (AES key to decrypt/encrypt the ticket)
|
||||
my $cbc = Crypt::Mode::CBC->new ('AES', 0);
|
||||
my $b_key_bytes = $cbc->encrypt ($b_kerberos_nfolded, $b_seed, $b_iv);
|
||||
|
||||
$b_key_bytes = $b_key_bytes . $cbc->encrypt ($b_key_bytes, $b_seed, $b_iv);
|
||||
|
||||
my $tmp_hash = sprintf ('$krb5db$18$%s$%s$%s', $user, $realm, unpack ("H*", $b_key_bytes));
|
||||
|
||||
return $tmp_hash;
|
||||
}
|
||||
|
||||
sub module_verify_hash
|
||||
{
|
||||
my $line = shift;
|
||||
|
||||
my ($hash, $word) = split (':', $line);
|
||||
|
||||
return unless defined $hash;
|
||||
return unless defined $word;
|
||||
|
||||
my @data = split ('\$', $hash);
|
||||
|
||||
return unless scalar @data == 5;
|
||||
|
||||
shift @data;
|
||||
|
||||
my $signature = shift @data;
|
||||
my $algorithm = shift @data;
|
||||
my $user = shift @data;
|
||||
my $realm = shift @data;
|
||||
|
||||
return unless ($signature eq "krb5db");
|
||||
return unless ($algorithm eq "18");
|
||||
|
||||
my $word_packed = pack_if_HEX_notation ($word);
|
||||
|
||||
my $new_hash = module_generate_hash ($word_packed, undef, $user, $realm);
|
||||
|
||||
return ($new_hash, $word);
|
||||
}
|
||||
|
||||
1;
|
||||
Loading…
Reference in New Issue