Microcorruption Sydney

Microcorruption의 Sydney다.

4438 <main>
4438:  3150 9cff      add #0xff9c, sp
443c:  3f40 b444      mov #0x44b4 "Enter the password to continue.", r15
4440:  b012 6645      call #0x4566 <puts>
4444:  0f41           mov sp, r15
4446:  b012 8044      call #0x4480 <get_password>
444a:  0f41           mov sp, r15
444c:  b012 8a44      call #0x448a <check_password>
4450:  0f93           tst r15
4452:  0520           jnz #0x445e <main+0x26>
4454:  3f40 d444      mov #0x44d4 "Invalid password; try again.", r15
4458:  b012 6645      call #0x4566 <puts>
445c:  093c           jmp #0x4470 <main+0x38>
445e:  3f40 f144      mov #0x44f1 "Access Granted!", r15
4462:  b012 6645      call #0x4566 <puts>
4466:  3012 7f00      push #0x7f
446a:  b012 0245      call #0x4502 <INT>
446e:  2153           incd sp
4470:  0f43           clr r15
4472:  3150 6400      add #0x64, sp

이번에는 뭘 생성하지는 않고, get_password로 입력 받고, check_password로 검사한다.

448a <check_password>
448a:  bf90 2f5b 0000 cmp #0x5b2f, 0x0(r15)
4490:  0d20           jnz $+0x1c
4492:  bf90 3a71 0200 cmp #0x713a, 0x2(r15)
4498:  0920           jnz $+0x14
449a:  bf90 323b 0400 cmp #0x3b32, 0x4(r15)
44a0:  0520           jne #0x44ac <check_password+0x22>
44a2:  1e43           mov #0x1, r14
44a4:  bf90 734b 0600 cmp #0x4b73, 0x6(r15)
44aa:  0124           jeq #0x44ae <check_password+0x24>
44ac:  0e43           clr r14
44ae:  0f4e           mov r14, r15
44b0:  3041           ret

2 byte씩 비교하는데 Little-Endian을 아는지 물어보는건가? 2f5b 3a71 323b 734b 넣으면 r15에 1 넣어주고 성공했다고 뜬다.