Maintenance script: Repair batch-0001 pages from live compare

2026-03-26T23:56:06Z

Repair batch-0001 pages from live compare

← Older revision		Revision as of 23:56, 26 March 2026
Line 1:		Line 1:
	7/26일 두번째로 발표한 주제입니다		7/26일 두번째로 발표한 주제입니다
	발표자료 ~~: [[:File~~:CrackingProgram.ppt~~\|CrackingProgram.ppt]]~~		발표자료 : CrackingProgram.ppt

	== 간단한 프로그램 ==		== 간단한 프로그램 ==
Line 38:		Line 38:
	00401037 push esi		00401037 push esi
	00401038 push edi		00401038 push edi
	00401039 lea edi,[ebp-4Ch]		00401039 lea edi,[ebp-4Ch]
	0040103C mov ecx,13h		0040103C mov ecx,13h
	00401041 mov eax,0CCCCCCCCh		00401041 mov eax,0CCCCCCCCh
	00401046 rep stos dword ptr [edi]		00401046 rep stos dword ptr [edi]
	8: int a, b, c;		8: int a, b, c;
	9: a = 1;		9: a = 1;
	00401048 mov dword ptr [ebp-4],1		00401048 mov dword ptr [ebp-4],1
	10: b = 2;		10: b = 2;
	0040104F mov dword ptr [ebp-8],2		0040104F mov dword ptr [ebp-8],2
	11: c = add(a, b);		11: c = add(a, b);
	00401056 mov eax,dword ptr [ebp-8]		00401056 mov eax,dword ptr [ebp-8]
	00401059 push eax		00401059 push eax
	0040105A mov ecx,dword ptr [ebp-4]		0040105A mov ecx,dword ptr [ebp-4]
	0040105D push ecx		0040105D push ecx
	0040105E call @ILT+0(add) (00401005)		0040105E call @ILT+0(add) (00401005)
	00401063 add esp,8		00401063 add esp,8
	00401066 mov dword ptr [ebp-0Ch],eax		00401066 mov dword ptr [ebp-0Ch],eax
	12:		12:
	13: return 0;		13: return 0;
Line 78:		Line 78:
	00401097 push esi		00401097 push esi
	00401098 push edi		00401098 push edi
	00401099 lea edi,[ebp-44h]		00401099 lea edi,[ebp-44h]
	0040109C mov ecx,11h		0040109C mov ecx,11h
	004010A1 mov eax,0CCCCCCCCh		004010A1 mov eax,0CCCCCCCCh
	004010A6 rep stos dword ptr [edi]		004010A6 rep stos dword ptr [edi]
	18: int c;		18: int c;
	19: c = a + b;		19: c = a + b;
	004010A8 mov eax,dword ptr [ebp+8]		004010A8 mov eax,dword ptr [ebp+8]
	004010AB add eax,dword ptr [ebp+0Ch]		004010AB add eax,dword ptr [ebp+0Ch]
	004010AE mov dword ptr [ebp-4],eax		004010AE mov dword ptr [ebp-4],eax
	20: return c;		20: return c;
	004010B1 mov eax,dword ptr [ebp-4]		004010B1 mov eax,dword ptr [ebp-4]
	21: }		21: }
	004010B4 pop edi		004010B4 pop edi
Line 103:		Line 103:
	void main()		void main()
	{		{
	char pass[8];		char pass[8];
	cout << "input password : ";		cout << "input password : ";
	cin >> pass;		cin >> pass;
Line 123:		Line 123:
	00401347 push esi		00401347 push esi
	00401348 push edi		00401348 push edi
	00401349 lea edi,[ebp-48h]		00401349 lea edi,[ebp-48h]
	0040134C mov ecx,12h		0040134C mov ecx,12h
	00401351 mov eax,0CCCCCCCCh		00401351 mov eax,0CCCCCCCCh
	00401356 rep stos dword ptr [edi]		00401356 rep stos dword ptr [edi]
	6: char pass[8];		6: char pass[8];
	7: cout << "input password : ";		7: cout << "input password : ";
	00401358 push offset string "input password : " (0046c048)		00401358 push offset string "input password : " (0046c048)
Line 134:		Line 134:
	00401367 add esp,8		00401367 add esp,8
	8: cin >> pass;		8: cin >> pass;
	0040136A lea eax,[ebp-8]		0040136A lea eax,[ebp-8]
	0040136D push eax		0040136D push eax
	0040136E push offset std::cin (00479f18)		0040136E push offset std::cin (00479f18)
Line 141:		Line 141:
	9: if (!strcmp(pass, "12345"))		9: if (!strcmp(pass, "12345"))
	0040137B push offset string "12345" (0046c040)		0040137B push offset string "12345" (0046c040)
	00401380 lea ecx,[ebp-8]		00401380 lea ecx,[ebp-8]
	00401383 push ecx		00401383 push ecx
	00401384 call strcmp (0041f9e0)		00401384 call strcmp (0041f9e0)
Line 181:		Line 181:
	----		----
	[[세미나/2004]]		[[세미나/2004]]

imported>Unknown at 05:23, 7 February 2021

2021-02-07T05:23:02Z

New page

7/26일 두번째로 발표한 주제입니다
발표자료 : [[:File:CrackingProgram.ppt|CrackingProgram.ppt]]

== 간단한 프로그램 ==
#include <iostream>
using namespace std;

int add(int a, int b);

int main()
{
int a, b, c;
a = 1;
b = 2;
c = add(a, b);

return 0;
}

int add(int a, int b)
{
int c;
c = a + b;
return c;
}

1: #include <iostream>
2: using namespace std;
3:
4: int add(int a, int b);
5:
6: int main()
7: {
00401030 push ebp
00401031 mov ebp,esp
00401033 sub esp,4Ch
00401036 push ebx
00401037 push esi
00401038 push edi
00401039 lea edi,[ebp-4Ch]
0040103C mov ecx,13h
00401041 mov eax,0CCCCCCCCh
00401046 rep stos dword ptr [edi]
8: int a, b, c;
9: a = 1;
00401048 mov dword ptr [ebp-4],1
10: b = 2;
0040104F mov dword ptr [ebp-8],2
11: c = add(a, b);
00401056 mov eax,dword ptr [ebp-8]
00401059 push eax
0040105A mov ecx,dword ptr [ebp-4]
0040105D push ecx
0040105E call @ILT+0(add) (00401005)
00401063 add esp,8
00401066 mov dword ptr [ebp-0Ch],eax
12:
13: return 0;
00401069 xor eax,eax
14: }
0040106B pop edi
0040106C pop esi
0040106D pop ebx
0040106E add esp,4Ch
00401071 cmp ebp,esp
00401073 call __chkesp (004081a0)
00401078 mov esp,ebp
0040107A pop ebp
0040107B ret
----------------------------------------------------------------------------------
15:
16: int add(int a, int b)
17: {
00401090 push ebp
00401091 mov ebp,esp
00401093 sub esp,44h
00401096 push ebx
00401097 push esi
00401098 push edi
00401099 lea edi,[ebp-44h]
0040109C mov ecx,11h
004010A1 mov eax,0CCCCCCCCh
004010A6 rep stos dword ptr [edi]
18: int c;
19: c = a + b;
004010A8 mov eax,dword ptr [ebp+8]
004010AB add eax,dword ptr [ebp+0Ch]
004010AE mov dword ptr [ebp-4],eax
20: return c;
004010B1 mov eax,dword ptr [ebp-4]
21: }
004010B4 pop edi
004010B5 pop esi
004010B6 pop ebx
004010B7 mov esp,ebp
004010B9 pop ebp
004010BA ret

== 간단한 암호입력 프로그램 ==
#include <iostream>
using namespace std;

void main()
{
char pass[8];
cout << "input password : ";
cin >> pass;
if (!strcmp(pass, "12345"))
cout << "correct passwd" << endl;
else
cout << "wrong passwd" << endl;
}

1: #include <iostream>
2: using namespace std;
3:
4: void main()
5: {
00401340 push ebp
00401341 mov ebp,esp
00401343 sub esp,48h
00401346 push ebx
00401347 push esi
00401348 push edi
00401349 lea edi,[ebp-48h]
0040134C mov ecx,12h
00401351 mov eax,0CCCCCCCCh
00401356 rep stos dword ptr [edi]
6: char pass[8];
7: cout << "input password : ";
00401358 push offset string "input password : " (0046c048)
0040135D push offset std::cout (00479e88)
00401362 call @ILT+370(std::operator<<) (00401177)
00401367 add esp,8
8: cin >> pass;
0040136A lea eax,[ebp-8]
0040136D push eax
0040136E push offset std::cin (00479f18)
00401373 call @ILT+55(std::operator>>) (0040103c)
00401378 add esp,8
9: if (!strcmp(pass, "12345"))
0040137B push offset string "12345" (0046c040)
00401380 lea ecx,[ebp-8]
00401383 push ecx
00401384 call strcmp (0041f9e0)
00401389 add esp,8
0040138C test eax,eax
0040138E jne main+70h (004013b0)
10: cout << "correct passwd" << endl;
00401390 push offset @ILT+120(std::endl) (0040107d)
00401395 push offset string "correct passwd" (0046c02c)
0040139A push offset std::cout (00479e88)
0040139F call @ILT+370(std::operator<<) (00401177)
004013A4 add esp,8
004013A7 mov ecx,eax
004013A9 call @ILT+295(std::basic_ostream<char,std::char_traits<char> >::operator<<) (0040112c)
11: else
004013AE jmp main+8Eh (004013ce)
12: cout << "wrong passwd" << endl;
004013B0 push offset @ILT+120(std::endl) (0040107d)
004013B5 push offset string "wrong passwd" (0046c01c)
004013BA push offset std::cout (00479e88)
004013BF call @ILT+370(std::operator<<) (00401177)
004013C4 add esp,8
004013C7 mov ecx,eax
004013C9 call @ILT+295(std::basic_ostream<char,std::char_traits<char> >::operator<<) (0040112c)
13: }
004013CE pop edi
004013CF pop esi
004013D0 pop ebx
004013D1 add esp,48h
004013D4 cmp ebp,esp
004013D6 call __chkesp (0041fa70)
004013DB mov esp,ebp
004013DD pop ebp
004013DE ret
== 관련링크 ==
[http://home.t-online.de/home/Ollydbg/ Ollydbg]
[http://family.sogang.ac.kr/~gundal79/ codeDiver]

----
[[세미나/2004]]

CrackingProgram - Revision history

Maintenance script: Repair batch-0001 pages from live compare

imported>Unknown at 05:23, 7 February 2021