Can You Crack It?

[isitafox]

Apparently the gov are looking for code crackers to employ in the hunt for terrorists and the like. All you have to do to be eligible for consideration is crack the code on this website. Any takers on here? I had a look but wouldn't know where to begin!

[Leistonbmx]

Be funny if someone just mashed the keyboard and got it right haha. I would also not know where to start.

[Luke Rainbird]

Might have a look later if I can get this mountain of coursework to become a molehill

[Rich J]

Not to put you all off but

http://www.canyoucrackit.co.uk/soyoudidit.asp

[old'scoolfool]

Not to put you all off but

http://www.canyoucrackit.co.uk/soyoudidit.asp

bloody hell, did you apply? and what was it it drove me nuts

[Matt Vandart]

Not to put you all off but

http://www.canyoucrackit.co.uk/soyoudidit.asp

Explain?

[Rich J]

Solving the code just takes you to that page, which then suggests going to the website to apply. As far as I know the code is just marketing, it doesn't benefit your application. I was hoping you get flashy lights and stuff.

I didnt solve the code, I am trying though.

[AdamR28]

I am guess the fact that you can access that page without cracking the code means that someone has just found the URL?

Or Rich is really good

[Greetings]

Isn't that some message written in a hexadecimal system? Or is there more to it?

[JD™]

Isn't that some message written in a hexadecimal system? Or is there more to it?

Doesn't convert from a hex convertor I found on Google, which is when I realised I couldn't be bothered to try others. Does look very similar though.

EDIT: Ignore the crap out of me. It's quite clearly hex. I was trying to convert straight to ASCii and that doesn't work. You can convert to decimal, but then you're left with a big load of numbers from 0-255 which is hardly more helpful!

Edited December 1, 2011 by JD™

[King C]

I am guess the fact that you can access that page without cracking the code means that someone has just found the URL?

Or Rich is really good

I've met Rich and I can honestly tell you now, he's thick as shit

[JT!]

I googled the answer does that count?

[Matt Vandart]

Yes what is it?

[Rich J]

I've met Rich and I can honestly tell you now, he's thick as shit

Thats not fair, true, but its not fair!

[JAI]

//

#include <stdio.h>

#include <stdint.h>

#include <malloc.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include <time.h>

#include <sys/types.h>

#include <sys/mman.h>

#include <sys/utsname.h>

static char part1[] = {

0xeb, 0x04, 0xaf, 0xc2, 0xbf, 0xa3, 0x81, 0xec, 0x00, 0x01, 0x00, 0x00, 0x31, 0xc9, 0x88, 0x0c,

0x0c, 0xfe, 0xc1, 0x75, 0xf9, 0x31, 0xc0, 0xba, 0xef, 0xbe, 0xad, 0xde, 0x02, 0x04, 0x0c, 0x00,

0xd0, 0xc1, 0xca, 0x08, 0x8a, 0x1c, 0x0c, 0x8a, 0x3c, 0x04, 0x88, 0x1c, 0x04, 0x88, 0x3c, 0x0c,

0xfe, 0xc1, 0x75, 0xe8, 0xe9, 0x5c, 0x00, 0x00, 0x00, 0x89, 0xe3, 0x81, 0xc3, 0x04, 0x00, 0x00,

0x00, 0x5c, 0x58, 0x3d, 0x41, 0x41, 0x41, 0x41, 0x75, 0x43, 0x58, 0x3d, 0x42, 0x42, 0x42, 0x42,

0x75, 0x3b, 0x5a, 0x89, 0xd1, 0x89, 0xe6, 0x89, 0xdf, 0x29, 0xcf, 0xf3, 0xa4, 0x89, 0xde, 0x89,

0xd1, 0x89, 0xdf, 0x29, 0xcf, 0x31, 0xc0, 0x31, 0xdb, 0x31, 0xd2, 0xfe, 0xc0, 0x02, 0x1c, 0x06,

0x8a, 0x14, 0x06, 0x8a, 0x34, 0x1e, 0x88, 0x34, 0x06, 0x88, 0x14, 0x1e, 0x00, 0xf2, 0x30, 0xf6,

0x8a, 0x1c, 0x16, 0x8a, 0x17, 0x30, 0xda, 0x88, 0x17, 0x47, 0x49, 0x75, 0xde, 0x31, 0xdb, 0x89,

0xd8, 0xfe, 0xc0, 0xcd, 0x80, 0x90, 0x90, 0xe8, 0x9d, 0xff, 0xff, 0xff, 0x41, 0x41, 0x41, 0x41,

};

// code to dump the decrypted memory:

static const char dump_mem[] = {

0xba, 0x31, 0x00, 0x00, 0x00, // mov edx, 0x40

0x8d, 0x4f, 0xce, // lea ecx, [edi-0x32]

0x31, 0xdb, // xor ebx, ebx

0x43, // inc ebx (stdout)

0x31, 0xc0, // xor eax, eax

0xb0, 0x04, // add al, 0x4 - sys_write

0xcd, 0x80, // int 0x80

0x31, 0xdb, // xor ebx,ebx

0x43, // inc ebx

0x31, 0xd2, // xor edx,edx

0x42, // inc edx

0x68, 0x0a, 0x00,0x00, 0x00, // push 0xa

0x8d, 0x0c, 0x24, // lea ecx,[esp]

0xb8, 0x04, 0x00,0x00, 0x00, // mov eax, 0x4

0xcd, 0x80, // int 0x80 - sys_write

0x31, 0xdb, // xor ebx,ebx

0x31, 0xc0, // xor eax,eax

0x40, // inc eax

0xcd, 0x80, // int 0x80 - sys_exit

};

uint32_t patch_mem(char *ptr, size_t size)

{

uint32_t i;

for (i = 0; i < size; i++) {

if (*(uint16_t *)&ptr == 0x80cd) {

*(uint16_t *)&ptr = 0x45eb;

return 0;

}

}

return 1;

}

uint32_t check_arch(void)

{

struct utsname kernel_info;

uname(&kernel_info);

return strcmp(kernel_info.machine, "i686") ? 1 : 0;

}

int main(int argc, char **argv)

{

void *mem;

if (check_arch()) {

printf("[-] this program must run on a 32-bit architecture\n");

return 1;

}

printf("[*] allocating page aligned memory\n");

mem = memalign(4096, 4096);

if (!mem) {

printf("[-] error: %s\n", strerror(errno));

return 1;

}

memset(mem, 0, 4096);

printf("[*] setting page permissions\n");

if (mprotect(mem, 4096, PROT_READ | PROT_WRITE | PROT_EXEC)) {

printf("[-] error: %s\n", strerror(errno));

return 1;

}

printf("[*] copying payload\n");

memcpy(mem, part1, sizeof(part1));

memcpy(mem + sizeof(part1), part2, sizeof(part2));

memcpy(mem + sizeof(part1) + sizeof(part2), dump_mem, sizeof(dump_mem));

printf("[*] adding dump_mem payload\n");

if (patch_mem(mem, sizeof(part1))) {

printf("[-] failed to patch memory\n");

return 0;

}

printf("[*] executing payload..\n\n");

((int(*)(void))mem)();

return 0;

}

giving you the answer

Pr0t3ct!on#cyber_security@12*12.2011+

Jai Ashwell Resident coder at w...

[Matt Vandart]

What the f**k?

[King C]

I got the same answer as JAI so we must be right?

[monkeyseemonkeydo]

I got the same answer as JAI so we must be right?

Yeah me too! I think I had one extra semi-colon in the code but close enough

[Matt Vandart]

I still have no clue what the f**k its about

[Muel]

Clearly Jai just found this page via google and joined, so he could post his solution, and so we'd all go and check out his website.

[Fish-Finger-er]

Clearly Jai just found this page via google and joined, so he could post his solution, and so we'd all go and check out his website.

clearly your just a hater.

because mr nerdy mcnerd the coder couldnt crack and it, and Jai could, you start hatin on him.

[Muel]

Nah, couldn't even tell you what language that is. Some programmy shit. I do web design anyway, not programming. He might as well be speaking in southern.

[JAI]

i dont even work for woodgate anymore ...........and u know whats worse ladies n gents ? thats a Mysql memory dump most GOOD web designers like me (jai ashwell ) would know this tut tut tut

[JAI]

Yeah me too! I think I had one extra semi-colon in the code but close enough

yes i see that , i think your solution is a little better than mine ........thank you

I got the same answer as JAI so we must be right?

High five clearly ......maybe i should have multi posted but im new let me off 1 time

[dann2707]

Ere mate no one gives a f**k lol.