/
brute_force.cxx
158 lines (143 loc) · 4.04 KB
/
brute_force.cxx
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
#include <iostream>
#include <sstream>
inline void lclRotateRight(unsigned short& rnValue, size_t nBits)
{
rnValue = (rnValue >> nBits) | (rnValue << (sizeof(unsigned short) * 8 - nBits));
}
inline void lclRotateLeft(unsigned short& rnValue, size_t nBits)
{
rnValue = (rnValue << nBits) | (rnValue >> (sizeof(unsigned short) * 8 - nBits));
}
inline signed long lclGetLen(const unsigned char* pnPassData, signed long nBufferSize)
{
signed long nLen = 0;
while ( (nLen < nBufferSize) && pnPassData[ nLen ] ) { ++nLen; }
return nLen;
}
unsigned short lclGetKey(const unsigned char* pnPassData, signed long nBufferSize)
{
signed long nLen = lclGetLen(pnPassData, nBufferSize);
if ( nLen <= 0 ) return 0;
unsigned short nKey = 0;
unsigned short nKeyBase = 0x8000;
unsigned short nKeyEnd = 0xFFFF;
const unsigned char* pnChar = pnPassData + nLen - 1;
for (signed long nIndex = 0; nIndex < nLen; ++nIndex, --pnChar) {
unsigned char cChar = *pnChar & 0x7F;
for (size_t nBit = 0; nBit < 8; ++nBit) {
lclRotateLeft( nKeyBase, 1 );
if (nKeyBase & 1) nKeyBase ^= 0x1020;
if (cChar & 1) nKey ^= nKeyBase;
cChar >>= 1;
lclRotateLeft(nKeyEnd, 1);
if (nKeyEnd & 1) nKeyEnd ^= 0x1020;
}
}
return nKey ^ nKeyEnd;
}
unsigned short lclGetHash(const unsigned char* pnPassData, const unsigned short* pnRotatedData,signed long nBufferSize)
{
signed long nLen = lclGetLen(pnPassData, nBufferSize);
unsigned short nHash = static_cast<unsigned short>(nLen) ^ 0xCE4B;
const unsigned short* pnChar = pnRotatedData;
for(signed long nIndex = 0; nIndex < nLen; ++nIndex, ++pnChar) {
nHash ^= *pnChar;
}
return nHash;
}
int main(int argc, char ** argv) {
if (argc < 3) {
std::cout << "Usage: " << argv[0] << " <0xKey> <0xHash>" << std::endl;
return -1;
}
unsigned short nKey;
std::istringstream issk(argv[1]);
issk >> std::hex >> nKey;
unsigned short nHash;
std::istringstream issh(argv[2]);
issh >> std::hex >> nHash;
std::cout << std::hex << "Key: " << nKey << std::endl;
std::cout << std::hex << "Hash: " << nHash << std::endl;
unsigned char t[9] = { 1, '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' };
unsigned short r[9] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' };
unsigned short hash = lclGetHash(t, r, 16);
// BRUTE FORCE up to 8 chars
for (unsigned char i=32; i < 127; ++i) {
for (unsigned char j=32; j < 128; ++j) {
for (unsigned char k=32; k < 128; ++k) {
for (unsigned char l=32; l < 128; ++l) {
for (unsigned char m=32; m < 128; ++m) {
for (unsigned char n=32; n < 128; ++n) {
for (unsigned char o=32; o < 128; ++o) {
unsigned short x = nHash ^ hash;
lclRotateRight(x, 1);
if (32 <= x && x < 127) {
t[0] = static_cast<unsigned char>(x);
if (nKey == lclGetKey(t, 16)) {
std::cout << "Password: '" << t << "'" << std::endl;
}
}
hash ^= r[1];
r[1] = t[1] = o;
lclRotateLeft(r[1], 2);
hash ^= r[1];
if (o == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[2];
r[2] = t[2] = n;
lclRotateLeft(r[2], 3);
hash ^= r[2];
if (n == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[3];
r[3] = t[3] = m;
lclRotateLeft(r[3], 4);
hash ^= r[3];
if (m == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[4];
r[4] = t[4] = l;
lclRotateLeft(r[4], 5);
hash ^= r[4];
if (l == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[5];
r[5] = t[5] = k;
lclRotateLeft(r[5], 6);
hash ^= r[5];
if (k == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[6];
r[6] = t[6] = j;
lclRotateLeft(r[6], 7);
hash ^= r[6];
if (j == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
hash ^= r[7];
r[7] = t[7] = i;
lclRotateLeft(r[7], 8);
hash ^= r[7];
if (i == 32) {
r[0] = '\0';
hash = lclGetHash(t, r, 16);
}
}
}