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[原创]看雪CTF.TSRC 2018 团队赛 - 初世纪
发表于: 2018-12-1 12:41 2012

[原创]看雪CTF.TSRC 2018 团队赛 - 初世纪

2018-12-1 12:41
2012
关键代码如下:
.text:000000014000148B                 call    cs:GetDlgItemTextA
.text:0000000140001491                 cmp     ebx, 6
.text:0000000140001494                 jnz     short loc_1400014F1
.text:0000000140001496                 movzx   eax, [rsp+130h+Dst]
.text:000000014000149B                 sub     eax, 30h
.text:000000014000149E                 cmp     eax, ebx
.text:00000001400014A0                 jnz     short loc_1400014F1
.text:00000001400014A2                 movzx   eax, [rsp+130h+var_CF]
.text:00000001400014A7                 sub     eax, 40h
.text:00000001400014AA                 cmp     eax, 5
.text:00000001400014AD                 jnz     short loc_1400014F1
.text:00000001400014AF                 movzx   eax, [rsp+130h+var_CE]
.text:00000001400014B4                 sub     eax, 70h
.text:00000001400014B7                 cmp     eax, 7
.text:00000001400014BA                 jnz     short loc_1400014F1
.text:00000001400014BC                 movzx   eax, [rsp+130h+var_CD]
.text:00000001400014C1                 sub     eax, 60h
.text:00000001400014C4                 cmp     eax, 9
.text:00000001400014C7                 jnz     short loc_1400014F1
.text:00000001400014C9                 movzx   eax, [rsp+130h+var_CC]
.text:00000001400014CE                 sub     eax, 30h
.text:00000001400014D1                 cmp     eax, 9
.text:00000001400014D4                 jnz     short loc_1400014F1
.text:00000001400014D6                 movzx   eax, [rsp+130h+var_CB]
.text:00000001400014DB                 lea     rcx, String1
.text:00000001400014E2                 sub     eax, 40h
.text:00000001400014E5                 cmp     eax, 8
.text:00000001400014E8                 jnz     short loc_1400014F8
.text:00000001400014EA                 lea     rdx, [rsp+130h+var_E8]
.text:00000001400014EF                 jmp     short loc_1400014FD
.text:00000001400014F1 ; ----------------------------------------------
读入key的长度为6,ascii值分别为:0x36, 0x45, 0x77, 0x69, 0x39, 0x48;
转换成字符串:6Ewi9H

[招生]科锐逆向工程师培训(2024年11月15日实地,远程教学同时开班, 第51期)

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