MD5 Decrypter[EXE & Source Codes] 11-15-2012, 01:55 PM
#1
MD5 DECRYPTER[BRUTEFORCER]
Hello Hackcommunity,
So, I've made something like this in Java, now, I'm doing it in C++, making it faster and more efficient.
This is a MD5 Decrypter that decrypts a md5 string using bruteforce technique.
Firstly, I'd like to give credits to Frank Thilo for the md5 hashing algorithm code in C++.
Secondly, I'd like to thank creepycreeper for helping me out with the wordlist generator code(bruteforce code).
I've set the maximum wordlength to 20. But you can change it easily, by changing the value of the variable MAXSIZE.
Here's the source codes :
md5.h
Code:
/* md5.h */
#ifndef BZF_MD5_H
#define BZF_MD5_H
#include <string>
#include <iostream>
// a small class for calculating MD5 hashes of strings or byte arrays
// it is not meant to be fast or secure
//
// usage: 1) feed it blocks of uchars with update()
// 2) finalize()
// 3) get hexdigest() string
// or
// MD5(std::string).hexdigest()
//
// assumes that char is 8 bit and int is 32 bit
class MD5
{
public:
typedef unsigned int size_type; // must be 32bit
MD5();
MD5(const std::string& text);
void update(const unsigned char *buf, size_type length);
void update(const char *buf, size_type length);
MD5& finalize();
std::string hexdigest() const;
friend std::ostream& operator<<(std::ostream&, MD5 md5);
private:
void init();
typedef unsigned char uint1; // 8bit
typedef unsigned int uint4; // 32bit
enum {blocksize = 64}; // VC6 won't eat a const static int here
void transform(const uint1 block[blocksize]);
static void decode(uint4 output[], const uint1 input[], size_type len);
static void encode(uint1 output[], const uint4 input[], size_type len);
bool finalized;
uint1 buffer[blocksize]; // bytes that didn't fit in last 64 byte chunk
uint4 count[2]; // 64bit counter for number of bits (lo, hi)
uint4 state[4]; // digest so far
uint1 digest[16]; // the result
// low level logic operations
static inline uint4 F(uint4 x, uint4 y, uint4 z);
static inline uint4 G(uint4 x, uint4 y, uint4 z);
static inline uint4 H(uint4 x, uint4 y, uint4 z);
static inline uint4 I(uint4 x, uint4 y, uint4 z);
static inline uint4 rotate_left(uint4 x, int n);
static inline void FF(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
static inline void GG(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
static inline void HH(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
static inline void II(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac);
};
std::string md5(const std::string str);
#endifmd5.cpp
Code:
/* md5.cpp */
/* interface header */
#include "md5.h"
/* system implementation headers */
#include <stdio.h>
// Constants for MD5Transform routine.
#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21
///////////////////////////////////////////////
// F, G, H and I are basic MD5 functions.
inline MD5::uint4 MD5::F(uint4 x, uint4 y, uint4 z) {
return x&y | ~x&z;
}
inline MD5::uint4 MD5::G(uint4 x, uint4 y, uint4 z) {
return x&z | y&~z;
}
inline MD5::uint4 MD5::H(uint4 x, uint4 y, uint4 z) {
return x^y^z;
}
inline MD5::uint4 MD5::I(uint4 x, uint4 y, uint4 z) {
return y ^ (x | ~z);
}
// rotate_left rotates x left n bits.
inline MD5::uint4 MD5::rotate_left(uint4 x, int n) {
return (x << n) | (x >> (32-n));
}
// FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
// Rotation is separate from addition to prevent recomputation.
inline void MD5::FF(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) {
a = rotate_left(a+ F(b,c,d) + x + ac, s) + b;
}
inline void MD5::GG(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) {
a = rotate_left(a + G(b,c,d) + x + ac, s) + b;
}
inline void MD5::HH(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) {
a = rotate_left(a + H(b,c,d) + x + ac, s) + b;
}
inline void MD5::II(uint4 &a, uint4 b, uint4 c, uint4 d, uint4 x, uint4 s, uint4 ac) {
a = rotate_left(a + I(b,c,d) + x + ac, s) + b;
}
//////////////////////////////////////////////
// default ctor, just initailize
MD5::MD5()
{
init();
}
//////////////////////////////////////////////
// nifty shortcut ctor, compute MD5 for string and finalize it right away
MD5::MD5(const std::string &text)
{
init();
update(text.c_str(), text.length());
finalize();
}
//////////////////////////////
void MD5::init()
{
finalized=false;
count[0] = 0;
count[1] = 0;
// load magic initialization constants.
state[0] = 0x67452301;
state[1] = 0xefcdab89;
state[2] = 0x98badcfe;
state[3] = 0x10325476;
}
//////////////////////////////
// decodes input (unsigned char) into output (uint4). Assumes len is a multiple of 4.
void MD5::decode(uint4 output[], const uint1 input[], size_type len)
{
for (unsigned int i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((uint4)input[j]) | (((uint4)input[j+1]) << 8) |
(((uint4)input[j+2]) << 16) | (((uint4)input[j+3]) << 24);
}
//////////////////////////////
// encodes input (uint4) into output (unsigned char). Assumes len is
// a multiple of 4.
void MD5::encode(uint1 output[], const uint4 input[], size_type len)
{
for (size_type i = 0, j = 0; j < len; i++, j += 4) {
output[j] = input[i] & 0xff;
output[j+1] = (input[i] >> 8) & 0xff;
output[j+2] = (input[i] >> 16) & 0xff;
output[j+3] = (input[i] >> 24) & 0xff;
}
}
//////////////////////////////
// apply MD5 algo on a block
void MD5::transform(const uint1 block[blocksize])
{
uint4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
decode (x, block, blocksize);
/* Round 1 */
FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
/* Round 2 */
GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
/* Round 3 */
HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
/* Round 4 */
II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
// Zeroize sensitive information.
memset(x, 0, sizeof x);
}
//////////////////////////////
// MD5 block update operation. Continues an MD5 message-digest
// operation, processing another message block
void MD5::update(const unsigned char input[], size_type length)
{
// compute number of bytes mod 64
size_type index = count[0] / 8 % blocksize;
// Update number of bits
if ((count[0] += (length << 3)) < (length << 3))
count[1]++;
count[1] += (length >> 29);
// number of bytes we need to fill in buffer
size_type firstpart = 64 - index;
size_type i;
// transform as many times as possible.
if (length >= firstpart)
{
// fill buffer first, transform
memcpy(&buffer[index], input, firstpart);
transform(buffer);
// transform chunks of blocksize (64 bytes)
for (i = firstpart; i + blocksize <= length; i += blocksize)
transform(&input[i]);
index = 0;
}
else
i = 0;
// buffer remaining input
memcpy(&buffer[index], &input[i], length-i);
}
//////////////////////////////
// for convenience provide a verson with signed char
void MD5::update(const char input[], size_type length)
{
update((const unsigned char*)input, length);
}
//////////////////////////////
// MD5 finalization. Ends an MD5 message-digest operation, writing the
// the message digest and zeroizing the context.
MD5& MD5::finalize()
{
static unsigned char padding[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
if (!finalized) {
// Save number of bits
unsigned char bits[8];
encode(bits, count, 8);
// pad out to 56 mod 64.
size_type index = count[0] / 8 % 64;
size_type padLen = (index < 56) ? (56 - index) : (120 - index);
update(padding, padLen);
// Append length (before padding)
update(bits, 8);
// Store state in digest
encode(digest, state, 16);
// Zeroize sensitive information.
memset(buffer, 0, sizeof buffer);
memset(count, 0, sizeof count);
finalized=true;
}
return *this;
}
//////////////////////////////
// return hex representation of digest as string
std::string MD5::hexdigest() const
{
if (!finalized)
return "";
char buf[33];
for (int i=0; i<16; i++)
sprintf(buf+i*2, "%02x", digest[i]);
buf[32]=0;
return std::string(buf);
}
//////////////////////////////
std::ostream& operator<<(std::ostream& out, MD5 md5)
{
return out << md5.hexdigest();
}
//////////////////////////////
std::string md5(const std::string str)
{
MD5 md5 = MD5(str);
return md5.hexdigest();
}main.cpp
Code:
/* main.cpp */
/* The Alchemist coded this */
#include <stdlib.h>
#include <iostream>
#include "md5.h"
#include <conio.h>
#include <string.h>
using namespace std;
const char CHARLIST[] = "abcdefghijklmnopqrstuvzxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890`~!@#$%^&*()-_=+{}[]|;:,<.>/?";
void generate(char *check,char *state,int position,int GENSIZE)
{
int i;
for (i = 0; i < (sizeof(CHARLIST)-1); i++)
{
state[position] = CHARLIST[i];
if (position < (GENSIZE-1))
generate(check, state, position+1,GENSIZE);
else
{
std::string str = md5(state);
char * writable = new char[str.size() + 1];
std::copy(str.begin(), str.end(), writable);
writable[str.size()] = '\0';
if(strcmp(writable,check)==0)
{
cout<<"Match found!! Decrypted string : "<<state;
getch();
exit(0);
}
delete[] writable;
}
}
}
void main(int argc, char *argv[])
{
char *str=new char[40];
int i,GENSIZE,MAXSIZE=20; //change MAXSIZE to modify the maximum word length
cout<<"Enter string to be decrypted : ";
cin>>str;
cout<<"Decrypting....\nPlease wait...\n";
for(GENSIZE=1;GENSIZE<=MAXSIZE;GENSIZE++)
{
char buffer[20]={};
buffer[GENSIZE] = 0 ;
generate(str,buffer,0,GENSIZE);
}
cout<<"Match not found!!";
getch();
}You may have a look at the EXE from here if you don't feel like building up the EXE yourself.
DOWNLOAD LINK
VIRUS SCAN
Its clean. You can trust this. The source code says it all.:yes:
Thats it..
Enjoy..
PLEASE DON'T FORGET TO GIVE FEEDBACK!!!
![[Image: 2YpkRjy.png]](http://i.imgur.com/2YpkRjy.png)
![[+]](https://sinister.li/images/modern/collapse_collapsed.png)
Learning C right now but this might come of help later.
