1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
| #include <conio.h>
#include <vector>
using namespace std;
const bool printAddresses = true;
class Mutator {
protected:
int param;
public:
Mutator(int param) : param(param) {}
virtual int getParam() const {
return param;
}
virtual void mutate(void *data, int size) const = 0;
};
class Multiplier : public Mutator {
int reserved[40];
public:
Multiplier(int multiplier = 0) : Mutator(multiplier) {}
virtual void mutate(void *data, int size) const {
int *ptr = (int *)data;
for (int i = 0; i < size / 4; ++i)
ptr[i] *= getParam();
}
};
class LowerCaser : public Mutator {
public:
LowerCaser() : Mutator(0) {}
virtual void mutate(void *data, int size) const {
char *ptr = (char *)data;
for (int i = 0; i < size; ++i)
if (ptr[i] >= 'a' && ptr[i] <= 'z')
ptr[i] -= 0x20;
}
};
class Block {
void *data;
int size;
public:
Block(void *data, int size) : data(data), size(size) {}
void *getData() const { return data; }
int getSize() const { return size; }
};
void flush() {
char ch;
while ((ch = getchar()) != '\n' && ch != EOF);
}
vector<Block> blocks;
Mutator *mutators[] = { new Multiplier(2), new LowerCaser() };
void configureMutator() {
while (true) {
printf(
"1) Multiplier (multiplier = %d)\n"
"2) LowerCaser\n"
"3) Exit\n"
"\n"
"Your choice [1-3]: ", mutators[0]->getParam());
int choice = _getch();
printf("\n\n");
if (choice == '3')
break;
if (choice >= '1' && choice <= '3') {
if (choice == '1') {
if (printAddresses)
printf("mutators[0] = 0x%08x\n", mutators[0]);
delete mutators[0];
printf("multiplier (int): ");
int multiplier;
int res = scanf_s("%d", &multiplier);
flush();
if (res) {
mutators[0] = new Multiplier(multiplier);
if (printAddresses)
printf("mutators[0] = 0x%08x\n", mutators[0]);
printf("Multiplier was configured\n\n");
}
break;
}
else {
printf("LowerCaser is not configurable for now!\n\n");
}
}
else
printf("Wrong choice!\n");
}
}
void listBlocks() {
printf("------- Blocks -------\n");
if (!printAddresses)
for (size_t i = 0; i < blocks.size(); ++i)
printf("block %d: size = %d\n", i, blocks[i].getSize());
else
for (size_t i = 0; i < blocks.size(); ++i)
printf("block %d: address = 0x%08x; size = %d\n", i, blocks[i].getData(), blocks[i].getSize());
printf("----------------------\n\n");
}
void readBlock() {
char *data;
char filePath[1024];
while (true) {
printf("File path ('exit' to exit): ");
scanf_s("%s", filePath, sizeof(filePath));
fflush(stdin);
printf("\n");
if (!strcmp(filePath, "exit"))
return;
FILE *f = fopen(filePath, "rb");
if (!f)
printf("Can't open the file!\n\n");
else {
fseek(f, 0L, SEEK_END);
long bytes = ftell(f);
data = new char[bytes];
fseek(f, 0L, SEEK_SET);
int pos = 0;
while (pos < bytes) {
int len = bytes - pos > 200 ? 200 : bytes - pos;
fread(data + pos, 1, len, f);
pos += len;
}
fclose(f);
blocks.push_back(Block(data, bytes));
printf("Block read (%d bytes)\n\n", bytes);
break;
}
}
}
void duplicateBlock() {
listBlocks();
while (true) {
printf("Index of block to duplicate (-1 to exit): ");
int index;
scanf_s("%d", &index);
fflush(stdin);
if (index == -1)
return;
if (index < 0 || index >= (int)blocks.size()) {
printf("Wrong index!\n");
}
else {
while (true) {
int copies;
printf("Number of copies (-1 to exit): ");
scanf_s("%d", &copies);
fflush(stdin);
if (copies == -1)
return;
if (copies <= 0)
printf("Wrong number of copies!\n");
else {
for (int i = 0; i < copies; ++i) {
int size = blocks[index].getSize();
void *data = new char[size];
memcpy(data, blocks[index].getData(), size);
blocks.push_back(Block(data, size));
}
return;
}
}
}
}
}
void myExit() {
exit(0);
}
void mutateBlock() {
listBlocks();
while (true) {
printf("Index of block to mutate (-1 to exit): ");
int index;
scanf_s("%d", &index);
fflush(stdin);
if (index == -1)
break;
if (index < 0 || index >= (int)blocks.size()) {
printf("Wrong index!\n");
}
else {
while (true) {
printf(
"1) Multiplier\n"
"2) LowerCaser\n"
"3) Exit\n"
"Your choice [1-3]: ");
int choice = _getch();
printf("\n\n");
if (choice == '3')
break;
if (choice >= '1' && choice <= '3') {
choice -= '0';
mutators[choice - 1]->mutate(blocks[index].getData(), blocks[index].getSize());
printf("The block was mutated.\n\n");
break;
}
else
printf("Wrong choice!\n\n");
}
break;
}
}
}
int handleMenu() {
while (true) {
printf(
"1) Read block from file\n"
"2) List blocks\n"
"3) Duplicate Block\n"
"4) Configure mutator\n"
"5) Mutate block\n"
"6) Exit\n"
"\n"
"Your choice [1-6]: ");
int choice = _getch();
printf("\n\n");
if (choice >= '1' && choice <= '6')
return choice - '0';
else
printf("Wrong choice!\n\n");
}
}
int main() {
typedef void(*funcPtr)();
funcPtr functions[] = { readBlock, listBlocks, duplicateBlock, configureMutator, mutateBlock, myExit };
while (true) {
int choice = handleMenu();
functions[choice - 1]();
}
return 0;
}
|