mirror of
https://git.soft.fish/val/MicroCorruption.git
synced 2024-11-22 21:05:59 +00:00
79 lines
2.3 KiB
NASM
79 lines
2.3 KiB
NASM
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; just
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6000 1c 0b43 1e43 3d400080 0f4b b012b645 3d500300 1b53 3b906000 f72b 3041
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; where depth = number of nibbles in each truncated hash
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; msize = number of bytes per hash
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;* depth 8, message size 2
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;? completes in 67234 cycles
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6000 6c
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0b43 2e43 3d400080 0f4b b012b645 3d500400 1b53 3b902000 f72b
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0b43 5e4b0080 4f4e 0f11 0f11 0f11 0f11 12c3 3ef00f00 3ff0 0f00 5f4f1047 b0127845 5f4e1047 b0127845 1b53 3b908000 e82b
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3e4040003f400090b0126845
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0f433d400090b012b645
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3f407f00b0125045 3041
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get_sram_hashes:
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0b43 2e43 3d400080 0f4b b012b645 2d52 1b53 3b902000 f72b
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0b43 clr r11 ; loop variable in r11
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2e43 mov #2, r14 ; r14 = 2
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3d40 0080 mov #0x8000, r13 ; set destination to 0x8000
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loop:
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0f4b mov r11, r15 ; mov addr r15
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b012 b645 call #0x45b6 ; <sha256_internal>
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2d52 add #4, r13 ; keep 4 bytes of the output
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1b53 inc r11 ; inc r11
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3b90 2000 cmp #0x20, r11 ; do that 0x1000 times
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f72b jnc $-0xe
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print_hex:
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0b43 5e4b0080 4f4e 0f11 0f11 0f11 0f11 12c3 3ef00f00 3ff0 0f00 5f4f1047 b0127845 5f4e1047 b0127845 1b53 3b908000 e82b
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0b43 clr r11;
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5e4b 0080 mov.b 0x8000(r11), r14
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4f4e mov.b r14, r15
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0f11 rra.b r15
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0f11 rra.b r15
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0f11 rra.b r15
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0f11 rra.b r15
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12c3 clrc
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3ef0 0f00 and #0xf, r14
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3ff0 0f00 and #0xf, r15
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5f4f 1047 mov.b 0x4710(r15), r15
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b012 7845 call #0x4578 ; <putchar>
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5f4e 1047 mov.b 0x4710(r14), r15
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b012 7845 call #0x4578 ; <putchar>
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1b53 add 0(r3), r11 ; inc r11
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3b90 8000 cmp #0x80, r11 ; do that 0x20*4 times
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e82b jnc $-0x28
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take_input:
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3e4040003f400090b0126845
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3e40 4000 mov #0x40, r14
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3f40 0090 mov #0x9000, r15
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b012 6845 call #0x4568; <getsn>
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check_password_questionmark:
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0f433d400090b012b645
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0f43 clr r15
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;3e40 0010 mov #0x1000, r14 ; set length to 0x1000
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3d40 0090 mov #0x9000, r13 ; set buffer to 0x9000
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b012 b645 call #0x45b6 ; <sha256_internal>
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unlock7f:
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324000ffb0121000 0243 3041
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324000ff mov #ff00, sr
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b0121000 call #0x10
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0243 mov #0, sr
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30127f00b0125045
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3012 7f00 push 0x7f
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b012 5045 call 0x4550
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3041 ret
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