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Add BitCracker optimization to precompute KE of second sha256_transform since input data is static
This commit is contained in:
Jens Steube
parent
7215d4e9c0
commit
e31e7690ed
@ -15,11 +15,17 @@
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#include "inc_cipher_aes.cl"
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#endif
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#define ITERATION_BITLOCKER 0x100000
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#define SALT_LEN_BITLOCKER 16
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#define IV_LEN_BITLOCKER 12
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#define DATA_LEN_BITLOCKER 60
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typedef struct bitlocker
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{
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u32 type;
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u32 iv[4];
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u32 data[15];
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u32 wb_ke_pc[ITERATION_BITLOCKER][64]; // only 48 needed
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} bitlocker_t;
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@ -27,10 +33,98 @@ typedef struct bitlocker_tmp
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{
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u32 last_hash[8];
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u32 init_hash[8];
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u32 salt[4];
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} bitlocker_tmp_t;
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DECLSPEC void sha256_transform_vector_pc (const u32x *w0, const u32x *w1, const u32x *w2, const u32x *w3, u32x *digest, const GLOBAL_AS u32 wb_ke_pc[64])
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{
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u32x a = digest[0];
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u32x b = digest[1];
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u32x c = digest[2];
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u32x d = digest[3];
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u32x e = digest[4];
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u32x f = digest[5];
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u32x g = digest[6];
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u32x h = digest[7];
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u32x w0_t = w0[0];
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u32x w1_t = w0[1];
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u32x w2_t = w0[2];
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u32x w3_t = w0[3];
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u32x w4_t = w1[0];
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u32x w5_t = w1[1];
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u32x w6_t = w1[2];
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u32x w7_t = w1[3];
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u32x w8_t = w2[0];
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u32x w9_t = w2[1];
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u32x wa_t = w2[2];
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u32x wb_t = w2[3];
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u32x wc_t = w3[0];
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u32x wd_t = w3[1];
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u32x we_t = w3[2];
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u32x wf_t = w3[3];
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#define ROUND_EXPAND_PC(i) \
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{ \
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w0_t = wb_ke_pc[i + 0]; \
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w1_t = wb_ke_pc[i + 1]; \
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w2_t = wb_ke_pc[i + 2]; \
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w3_t = wb_ke_pc[i + 3]; \
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w4_t = wb_ke_pc[i + 4]; \
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w5_t = wb_ke_pc[i + 5]; \
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w6_t = wb_ke_pc[i + 6]; \
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w7_t = wb_ke_pc[i + 7]; \
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w8_t = wb_ke_pc[i + 8]; \
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w9_t = wb_ke_pc[i + 9]; \
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wa_t = wb_ke_pc[i + 10]; \
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wb_t = wb_ke_pc[i + 11]; \
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wc_t = wb_ke_pc[i + 12]; \
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wd_t = wb_ke_pc[i + 13]; \
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we_t = wb_ke_pc[i + 14]; \
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wf_t = wb_ke_pc[i + 15]; \
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}
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#define ROUND_STEP(i) \
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{ \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w0_t, k_sha256[i + 0]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w1_t, k_sha256[i + 1]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, w2_t, k_sha256[i + 2]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, w3_t, k_sha256[i + 3]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, w4_t, k_sha256[i + 4]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, w5_t, k_sha256[i + 5]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, w6_t, k_sha256[i + 6]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, w7_t, k_sha256[i + 7]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, a, b, c, d, e, f, g, h, w8_t, k_sha256[i + 8]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, h, a, b, c, d, e, f, g, w9_t, k_sha256[i + 9]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, g, h, a, b, c, d, e, f, wa_t, k_sha256[i + 10]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, f, g, h, a, b, c, d, e, wb_t, k_sha256[i + 11]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, e, f, g, h, a, b, c, d, wc_t, k_sha256[i + 12]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, d, e, f, g, h, a, b, c, wd_t, k_sha256[i + 13]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, c, d, e, f, g, h, a, b, we_t, k_sha256[i + 14]); \
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SHA256_STEP (SHA256_F0o, SHA256_F1o, b, c, d, e, f, g, h, a, wf_t, k_sha256[i + 15]); \
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}
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#ifdef _unroll
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#pragma unroll
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#endif
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for (int i = 0; i < 64; i += 16)
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{
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ROUND_EXPAND_PC (i); ROUND_STEP (i);
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}
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#undef ROUND_EXPAND_PC
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#undef ROUND_STEP
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digest[0] += a;
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digest[1] += b;
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digest[2] += c;
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digest[3] += d;
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digest[4] += e;
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digest[5] += f;
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digest[6] += g;
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digest[7] += h;
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}
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KERNEL_FQ void m22100_init (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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{
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/**
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@ -41,7 +135,6 @@ KERNEL_FQ void m22100_init (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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if (gid >= gid_max) return;
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// sha256 of utf16le converted password:
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sha256_ctx_t ctx0;
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@ -63,7 +156,6 @@ KERNEL_FQ void m22100_init (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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w[6] = ctx0.h[6];
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w[7] = ctx0.h[7];
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// sha256 of sha256:
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sha256_ctx_t ctx1;
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@ -72,7 +164,6 @@ KERNEL_FQ void m22100_init (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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sha256_update (&ctx1, w, 32);
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sha256_final (&ctx1);
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// set tmps:
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tmps[gid].init_hash[0] = ctx1.h[0];
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@ -92,11 +183,6 @@ KERNEL_FQ void m22100_init (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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tmps[gid].last_hash[5] = 0;
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tmps[gid].last_hash[6] = 0;
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tmps[gid].last_hash[7] = 0;
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tmps[gid].salt[0] = salt_bufs[salt_pos].salt_buf[0];
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tmps[gid].salt[1] = salt_bufs[salt_pos].salt_buf[1];
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tmps[gid].salt[2] = salt_bufs[salt_pos].salt_buf[2];
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tmps[gid].salt[3] = salt_bufs[salt_pos].salt_buf[3];
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}
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KERNEL_FQ void m22100_loop (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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@ -107,56 +193,32 @@ KERNEL_FQ void m22100_loop (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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// init
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u32x wa0[4];
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u32x wa1[4];
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u32x wa2[4];
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u32x wa3[4];
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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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wa0[0] = packv (tmps, last_hash, gid, 0); // last_hash
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wa0[1] = packv (tmps, last_hash, gid, 1);
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wa0[2] = packv (tmps, last_hash, gid, 2);
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wa0[3] = packv (tmps, last_hash, gid, 3);
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wa1[0] = packv (tmps, last_hash, gid, 4);
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wa1[1] = packv (tmps, last_hash, gid, 5);
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wa1[2] = packv (tmps, last_hash, gid, 6);
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wa1[3] = packv (tmps, last_hash, gid, 7);
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wa2[0] = packv (tmps, init_hash, gid, 0); // init_hash
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wa2[1] = packv (tmps, init_hash, gid, 1);
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wa2[2] = packv (tmps, init_hash, gid, 2);
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wa2[3] = packv (tmps, init_hash, gid, 3);
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wa3[0] = packv (tmps, init_hash, gid, 4);
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wa3[1] = packv (tmps, init_hash, gid, 5);
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wa3[2] = packv (tmps, init_hash, gid, 6);
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wa3[3] = packv (tmps, init_hash, gid, 7);
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u32x wb0[4];
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u32x wb1[4];
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u32x wb2[4];
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u32x wb3[4];
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wb0[0] = packv (tmps, salt, gid, 0);
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wb0[1] = packv (tmps, salt, gid, 1);
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wb0[2] = packv (tmps, salt, gid, 2);
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wb0[3] = packv (tmps, salt, gid, 3);
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wb1[0] = 0;
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wb1[1] = 0;
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wb1[2] = 0x80000000;
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wb1[3] = 0;
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wb2[0] = 0;
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wb2[1] = 0;
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wb2[2] = 0;
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wb2[3] = 0;
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wb3[0] = 0;
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wb3[1] = 0;
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wb3[2] = 0;
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wb3[3] = 88 * 8;
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w0[0] = packv (tmps, last_hash, gid, 0); // last_hash
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w0[1] = packv (tmps, last_hash, gid, 1);
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w0[2] = packv (tmps, last_hash, gid, 2);
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w0[3] = packv (tmps, last_hash, gid, 3);
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w1[0] = packv (tmps, last_hash, gid, 4);
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w1[1] = packv (tmps, last_hash, gid, 5);
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w1[2] = packv (tmps, last_hash, gid, 6);
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w1[3] = packv (tmps, last_hash, gid, 7);
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w2[0] = packv (tmps, init_hash, gid, 0); // init_hash
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w2[1] = packv (tmps, init_hash, gid, 1);
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w2[2] = packv (tmps, init_hash, gid, 2);
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w2[3] = packv (tmps, init_hash, gid, 3);
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w3[0] = packv (tmps, init_hash, gid, 4);
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w3[1] = packv (tmps, init_hash, gid, 5);
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w3[2] = packv (tmps, init_hash, gid, 6);
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w3[3] = packv (tmps, init_hash, gid, 7);
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// main loop
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for (u32 i = 0, j = loop_pos; i < loop_cnt; i++, j++)
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{
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wb1[0] = hc_swap32 (j);
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u32 digest[8];
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digest[0] = SHA256M_A;
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@ -168,27 +230,27 @@ KERNEL_FQ void m22100_loop (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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digest[6] = SHA256M_G;
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digest[7] = SHA256M_H;
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sha256_transform_vector (wa0, wa1, wa2, wa3, digest);
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sha256_transform_vector (wb0, wb1, wb2, wb3, digest); // this one gives the boost
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sha256_transform_vector (w0, w1, w2, w3, digest);
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sha256_transform_vector_pc (w0, w1, w2, w3, digest, esalt_bufs[digests_offset].wb_ke_pc[j]);
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wa0[0] = digest[0];
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wa0[1] = digest[1];
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wa0[2] = digest[2];
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wa0[3] = digest[3];
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wa1[0] = digest[4];
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wa1[1] = digest[5];
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wa1[2] = digest[6];
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wa1[3] = digest[7];
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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] = digest[5];
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w1[2] = digest[6];
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w1[3] = digest[7];
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}
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unpackv (tmps, last_hash, gid, 0, wa0[0]);
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unpackv (tmps, last_hash, gid, 1, wa0[1]);
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unpackv (tmps, last_hash, gid, 2, wa0[2]);
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unpackv (tmps, last_hash, gid, 3, wa0[3]);
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unpackv (tmps, last_hash, gid, 4, wa1[0]);
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unpackv (tmps, last_hash, gid, 5, wa1[1]);
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unpackv (tmps, last_hash, gid, 6, wa1[2]);
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unpackv (tmps, last_hash, gid, 7, wa1[3]);
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unpackv (tmps, last_hash, gid, 0, w0[0]);
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unpackv (tmps, last_hash, gid, 1, w0[1]);
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unpackv (tmps, last_hash, gid, 2, w0[2]);
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unpackv (tmps, last_hash, gid, 3, w0[3]);
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unpackv (tmps, last_hash, gid, 4, w1[0]);
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unpackv (tmps, last_hash, gid, 5, w1[1]);
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unpackv (tmps, last_hash, gid, 6, w1[2]);
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unpackv (tmps, last_hash, gid, 7, w1[3]);
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}
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KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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@ -250,7 +312,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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if (gid >= gid_max) return;
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/*
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* AES decrypt the data_buf
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*/
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@ -274,7 +335,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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AES256_set_encrypt_key (ks, ukey, s_te0, s_te1, s_te2, s_te3);
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// decrypt:
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u32 iv[4];
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@ -284,7 +344,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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iv[2] = esalt_bufs[digests_offset].iv[2];
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iv[3] = esalt_bufs[digests_offset].iv[3];
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// in total we've 60 bytes: we need out0 (16 bytes) to out3 (16 bytes) for MAC verification
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// 1
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@ -293,7 +352,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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AES256_encrypt (ks, iv, out1, s_te0, s_te1, s_te2, s_te3, s_te4);
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// some early reject:
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out1[0] ^= esalt_bufs[digests_offset].data[4]; // skip MAC for now (first 16 bytes)
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@ -310,11 +368,8 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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if ((out1[2] & 0x00ff0000) != 0x00200000) return; // v2 must be 0x20
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if ((out1[2] >> 24) > 0x05) return; // v1 must be <= 5
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// if no MAC verification should be performed, we are already done:
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u32 type = esalt_bufs[digests_offset].type;
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@ -331,7 +386,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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out1[3] ^= esalt_bufs[digests_offset].data[7];
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/*
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* Decrypt the whole data buffer for MAC verification (type == 1):
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*/
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@ -376,7 +430,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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out3[1] ^= esalt_bufs[digests_offset].data[13];
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out3[2] ^= esalt_bufs[digests_offset].data[14];
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// compute MAC:
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// out1
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@ -420,7 +473,6 @@ KERNEL_FQ void m22100_comp (KERN_ATTR_TMPS_ESALT (bitlocker_tmp_t, bitlocker_t))
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if (mac[2] != out0[2]) return;
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if (mac[3] != out0[3]) return;
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// if we end up here, we are sure to have found the correct password:
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if (atomic_inc (&hashes_shown[digests_offset]) == 0)
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@ -9,6 +9,7 @@
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#include "bitops.h"
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#include "convert.h"
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#include "shared.h"
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#include "emu_inc_hash_sha256.h"
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static const u32 ATTACK_EXEC = ATTACK_EXEC_OUTSIDE_KERNEL;
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static const u32 DGST_POS0 = 0;
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@ -20,8 +21,6 @@ static const u32 HASH_CATEGORY = HASH_CATEGORY_FDE;
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static const char *HASH_NAME = "BitLocker";
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static const u64 KERN_TYPE = 22100;
|
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static const u32 OPTI_TYPE = OPTI_TYPE_SLOW_HASH_SIMD_LOOP;
|
||||
//static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
|
||||
// | OPTI_TYPE_EARLY_SKIP
|
||||
static const u64 OPTS_TYPE = OPTS_TYPE_PT_GENERATE_LE;
|
||||
static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
|
||||
static const char *ST_PASS = "hashcat";
|
||||
@ -42,11 +41,17 @@ u32 module_salt_type (MAYBE_UNUSED const hashconfig_t *hashconfig,
|
||||
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; }
|
||||
|
||||
#define ITERATION_BITLOCKER 0x100000
|
||||
#define SALT_LEN_BITLOCKER 16
|
||||
#define IV_LEN_BITLOCKER 12
|
||||
#define DATA_LEN_BITLOCKER 60
|
||||
|
||||
typedef struct bitlocker
|
||||
{
|
||||
u32 type;
|
||||
u32 iv[4];
|
||||
u32 data[15];
|
||||
u32 wb_ke_pc[ITERATION_BITLOCKER][64]; // only 48 needed
|
||||
|
||||
} bitlocker_t;
|
||||
|
||||
@ -54,17 +59,11 @@ typedef struct bitlocker_tmp
|
||||
{
|
||||
u32 last_hash[8];
|
||||
u32 init_hash[8];
|
||||
u32 salt[4];
|
||||
|
||||
} bitlocker_tmp_t;
|
||||
|
||||
static const char *SIGNATURE_BITLOCKER = "$bitlocker$";
|
||||
|
||||
#define ITERATION_BITLOCKER 0x100000
|
||||
#define SALT_LEN_BITLOCKER 16
|
||||
#define IV_LEN_BITLOCKER 12
|
||||
#define DATA_LEN_BITLOCKER 60
|
||||
|
||||
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 (bitlocker_t);
|
||||
@ -207,6 +206,41 @@ int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSE
|
||||
|
||||
salt->salt_len = SALT_LEN_BITLOCKER;
|
||||
|
||||
// wb_ke_pc
|
||||
|
||||
for (int i = 0; i < ITERATION_BITLOCKER; i++)
|
||||
{
|
||||
bitlocker->wb_ke_pc[i][ 0] = salt->salt_buf[0];
|
||||
bitlocker->wb_ke_pc[i][ 1] = salt->salt_buf[1];
|
||||
bitlocker->wb_ke_pc[i][ 2] = salt->salt_buf[2];
|
||||
bitlocker->wb_ke_pc[i][ 3] = salt->salt_buf[3];
|
||||
bitlocker->wb_ke_pc[i][ 4] = byte_swap_32 (i);
|
||||
bitlocker->wb_ke_pc[i][ 5] = 0;
|
||||
bitlocker->wb_ke_pc[i][ 6] = 0x80000000;
|
||||
bitlocker->wb_ke_pc[i][ 7] = 0;
|
||||
bitlocker->wb_ke_pc[i][ 8] = 0;
|
||||
bitlocker->wb_ke_pc[i][ 9] = 0;
|
||||
bitlocker->wb_ke_pc[i][10] = 0;
|
||||
bitlocker->wb_ke_pc[i][11] = 0;
|
||||
bitlocker->wb_ke_pc[i][12] = 0;
|
||||
bitlocker->wb_ke_pc[i][13] = 0;
|
||||
bitlocker->wb_ke_pc[i][14] = 0;
|
||||
bitlocker->wb_ke_pc[i][15] = 88 * 8;
|
||||
|
||||
#define hc_rotl32_S rotl32
|
||||
|
||||
for (int j = 16; j < 64; j++)
|
||||
{
|
||||
bitlocker->wb_ke_pc[i][j] = SHA256_EXPAND_S
|
||||
(
|
||||
bitlocker->wb_ke_pc[i][j - 2],
|
||||
bitlocker->wb_ke_pc[i][j - 7],
|
||||
bitlocker->wb_ke_pc[i][j - 15],
|
||||
bitlocker->wb_ke_pc[i][j - 16]
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// iter
|
||||
|
||||
const u8 *iter_pos = token.buf[4];
|
||||
|
||||
Loading…
Reference in New Issue
Block a user