#include <stdio.h>\n#include <windows.h>\nint main() {\nMessageBoxA(NULL, \"Hello, Malware Analysis!\", \"Test\", MB_OK);\nreturn 0;\n}<\/code><\/pre>\n\n\n\n\u4f7f\u7528\u5404\u79cd\u7f16\u8bd1\u5668\u5c06\u6e90\u7a0b\u5e8f\u7f16\u8bd1
\u53ef\u7528\u7528MinGW-w64 \u6216 Visual Studio Build Tools\uff0c\u5f53\u7136Dev-C++\u3001Code::Blocks\u3001Visual Studio\u4e5f\u662f\u53ef
\u4ee5\u7684\uff0c\u8fd9\u91cc\u6211\u5c31\u7528dev\u4e86\u3002\u7f16\u8bd1\u8fd0\u884c\u540e\u6548\u679c\u5982\u4e0b\u56fe<\/p>\n\n\n\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\n\u63a5\u4e0b\u6765\u53ef\u4ee5\u6765\u8bb0\u5f55\u7f16\u8bd1\u751f\u6210\u7684\u7a0b\u5e8f\u7684\u5404\u79cd\u4fe1\u606f<\/p>\n\n\n\n
\u5927\u5c0f\uff1a<\/strong><\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u5f53\u7136\u4e5f\u53ef\u4ee5powershell\uff1a<\/p>\n\n\n\n
Get-Item .\\original.exe | Select-Object Name,Length,CreationTime,LastWriteTime<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\nMD5\uff1a<\/strong><\/p>\n\n\n\ncertutil -hashfile original.exe MD5<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u5b57\u7b26\u4e32\uff1a<\/strong><\/p>\n\n\n\nstrings64.exe -nobanner -a original.exe > strings.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8282\u8868\u4fe1\u606f\uff1a<\/strong><\/p>\n\n\n\n\u4e22\u8fdbDIE<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u5bfc\u5165\u8868\u4fe1\u606f\uff1a<\/strong><\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u63a5\u7740\u5bf9original.exe\u8fdb\u884c\u4e00\u4e2aUPX\u52a0\u58f3<\/p>\n\n\n\n
upx -9 original.exe -o packed.exe<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8fd0\u884c\u4e00\u4e0bpacked.exe\uff0c\u4ecd\u7136\u5f39\u51fa<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8bf4\u660e\u52a0\u58f3\u540e\u7684\u7a0b\u5e8f\u4ecd\u53ef\u6b63\u5e38\u6267\u884c<\/p>\n\n\n\n
\u67e5\u770b\u52a0\u58f3\u540e\u6587\u4ef6\u5927\u5c0f\uff1a<\/p>\n\n\n\n
dir original.exe packed.exe<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u538b\u7f29\u7387 = (\u539f\u59cb\u6587\u4ef6\u5927\u5c0f – \u52a0\u58f3\u540e\u6587\u4ef6\u5927\u5c0f) \/ \u539f\u59cb\u6587\u4ef6\u5927\u5c0f \u00d7 100%
\u538b\u7f29\u7387\u4e3a27\uff05
DIE\u68c0\u67e5\u4e00\u4e0b<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u6709\u663e\u793aUPX\u52a0\u58f3<\/p>\n\n\n\n
\u4efb\u52a1\u4e8c<\/h2>\n\n\n\n
\u5bf9\u6bd4original.exe\u548cpacked.exe\u7684\u5b57\u7b26\u4e32<\/p>\n\n\n\n
strings64.exe -nobanner -a original.exe > original_strings.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u7136\u540e\u641c\u7d22\u5173\u952e\u5b57\u7b26\u4e32<\/p>\n\n\n\n
findstr \/i \"Hello Malware Analysis Test MessageBoxA USER32 KERNEL32\"\noriginal_strings.txt > result.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u7136\u540e\u53ef\u4ee5\u63d0\u53d6 packed.exe \u5b57\u7b26\u4e32<\/p>\n\n\n\n
strings64.exe -nobanner -a packed.exe > packed_strings.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u7136\u540e\u641c\u7d22\uff1a<\/p>\n\n\n\n
findstr \/i \"Hello Malware Analysis Test MessageBoxA USER32 KERNEL32 UPX\" packed_strings.txt > result_packed.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u52a0\u58f3\u540e\u4e00\u822c\u4f1a\u770b\u5230\uff1a<\/p>\n\n\n\n
UPX0
UPX1
UPX!<\/code><\/pre>\n\n\n\n\u4f46\u662f\u539f\u6765\u7684\uff1a<\/p>\n\n\n\n
Hello, Malware Analysis!
Test
MessageBoxA<\/code><\/pre>\n\n\n\n\u53ef\u80fd\u770b\u4e0d\u5230\uff0c\u6216\u8005\u53ef\u89c1\u4fe1\u606f\u660e\u663e\u51cf\u5c11<\/p>\n\n\n\n
DIE\u770b\u770b<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u53ef\u4ee5\u53d1\u73b0\u5bf9\u6bd4\u6ca1\u6709\u52a0\u58f3\u7684\uff0c\u65b0\u589e UPX0\u3001UPX1 \u8282\uff0c\u539f\u6765\u7684 .text\u3001.rdata\u3001.data \u7b49\u8282\u6d88\u5931\u3001\u88ab\u5408\u5e76\u6216\u88ab\u538b\u7f29\u8fdb UPX \u8282\uff0c\u8282\u8868\u7ed3\u6784\u660e\u663e\u53d8\u5316<\/p>\n\n\n\n
IDA\u770b\u770b<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\npushad
\u2026
\u5faa\u73af\u89e3\u538b
\u2026
popad
jmp \u539f\u59cb\u5165\u53e3\u70b9<\/code><\/pre>\n\n\n\n\u6216\u8005\u7c7b\u4f3c<\/p>\n\n\n\n
mov
lea
add
sub
xor
rep movsd
jmp<\/code><\/pre>\n\n\n\n\u8fd9\u4e9b\u901a\u5e38\u662f\uff1a<\/p>\n\n\n\n
\n- \u4fdd\u5b58\u5bc4\u5b58\u5668\u73b0\u573a<\/li>\n\n\n\n
- \u89e3\u538b\u539f\u59cb\u4ee3\u7801\u548c\u6570\u636e<\/li>\n\n\n\n
- \u4fee\u590d\u5bfc\u5165\u8868<\/li>\n\n\n\n
- \u8df3\u8f6c\u5230\u539f\u59cb\u5165\u53e3\u70b9 OEP<\/li>\n<\/ol>\n\n\n\n
\u4e00\u822c\u6765\u8bf4\uff0cUPX \u5e38\u89c1\u5165\u53e3\u4ee3\u7801\u7279\u5f81\u662f\uff1a<\/p>\n\n\n\n
\u7a0b\u5e8f\u5165\u53e3\u70b9\u4f4d\u4e8e UPX1 \u6216 UPX \u76f8\u5173\u8282\u4e2d
\u5165\u53e3\u5904\u4e0d\u662f\u4e1a\u52a1\u903b\u8f91\uff0c\u800c\u662f\u89e3\u538b stub
\u63a7\u5236\u6d41\u770b\u8d77\u6765\u4e0d\u50cf\u6b63\u5e38 C \u7a0b\u5e8f
\u65e0\u6cd5\u76f4\u63a5\u770b\u5230 MessageBoxA \u8c03\u7528<\/code><\/pre>\n\n\n\n\u6240\u4ee5\u52a0\u58f3\u4e4b\u540e\u5bf9\u4e8e\u5206\u6790\u96be\u5ea6\u589e\u52a0\u4e00\u822c\u6709\u56db\u4e2a\u65b9\u9762\uff0c\u9996\u5148\u662f\u5b57\u7b26\u4e32\u88ab\u538b\u7f29\u3002\u539f\u59cb\u7a0b\u5e8f\u91cc\u80fd\u76f4\u63a5\u770b\u5230\u7684\u5b57\u7b26\u4e32\uff0c\u52a0\u58f3\u540e\u53ef\u80fd\u770b\u4e0d\u5230\uff0c\u6216\u8005\u53ef\u89c1\u6027\u660e\u663e\u4e0b\u964d\u3002\u5176\u6b21\u662f\u5bfc\u5165\u8868\u53d8\u5c11\u6216\u4e0d\u5b8c\u6574\u3002\u539f\u59cb\u7a0b\u5e8f\u5bfc\u5165\u8868\u53ef\u80fd\u80fd\u770b\u5230\uff1a<\/p>\n\n\n\n
USER32.dll -> MessageBoxA
KERNEL32.dll -> ExitProcess<\/code><\/pre>\n\n\n\n\u52a0\u58f3\u540e\uff0c\u5bfc\u5165\u8868\u53ef\u80fd\u53ea\u5269\u4e0b\u58f3\u8fd0\u884c\u6240\u9700\u7684\u4e00\u4e9b API\uff0c\u4e5f\u53ef\u80fd\u770b\u4e0d\u5230\u539f\u59cb\u7684MessageBoxA<\/code>
\u63a5\u7740\u662f\u8282\u8868\u7ed3\u6784\u6539\u53d8\uff0c\u539f\u59cb\u8282\uff1a.text .rdata .data .rsrc\u7b49\u7b49\u4e4b\u7c7b\uff0c\u52a0\u58f3\u540e\u5c31\u53ea\u6709UPX0\uff0cUPX1 UPX2
\u6700\u540e\u5c31\u662fIDA \u4e2d\u63a7\u5236\u6d41\u7684\u4e0d\u76f4\u89c2\u4e86\u3002IDA \u6253\u5f00original.exe \uff0c\u5165\u53e3\u70b9\u9644\u8fd1\u6bd4\u8f83\u5bb9\u6613\u627e\u5230\u6b63\u5e38\u7a0b\u5e8f\u903b\u8f91\uff0c\u4f46\u662f IDA \u6253\u5f00packed.exe \uff0c\u5165\u53e3\u70b9\u662f\u58f3\u4ee3\u7801\uff0c\u89e3\u538b\u5faa\u73af\uff0c\u8df3\u8f6c\uff0c\u5185\u5b58\u5199\u5165\uff0c\u5bfc\u5165\u8868\u4fee\u590d<\/p>\n\n\n\n\u521a\u521a\u6211\u4eec\u662f\u7ed9\u6837\u672c\u52a0\u4e86UPX\u7684\u58f3\uff0c\u73b0\u5728\u6211\u4eec\u81ea\u52a8\u8131\u4e86UPX\u7684\u58f3<\/p>\n\n\n\n
upx -d packed.exe -o unpacked.exe<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u76f4\u63a5\u8fd0\u884cunpacked.exe\uff0c\u8df3\u51fa\u5f39\u7a97\uff0c\u8bf4\u660e\u8131\u58f3\u540e\u7a0b\u5e8f\u529f\u80fd\u6b63\u5e38<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u63a5\u7740\u6211\u4eec\u6765\u5bf9\u6bd4\u4e00\u4e0b\u538b\u7f29\uff0c\u89e3\u538b\u7f29\uff0c\u539f\u6837\u672c\u7684\u5404\u79cd\u4fe1\u606f<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u53ef\u4ee5\u770b\u5230packed.exe \u6bd4 original.exe \u5c0f\uff0cunpacked.exe \u8ddf original.exe\u4e00\u6837\uff0c\u56e0\u4e3a\u6211\u4eec\u7684\u6837\u672c\u6bd4\u8f83\u5c0f\uff0c\u52a0\u7684\u58f3\u4e5f\u6bd4\u8f83\u7b80\u5355\u3002\u4e00\u822c\u6765\u8bf4unpacked.exe \u4f1a\u63a5\u8fd1 original.exe\uff0c\u56e0\u4e3a\u89e3\u538b\u7f29\u4e2d\u9014\u4f1a\u4e22\u5931\u4e1c\u897f<\/p>\n\n\n\n
\u8ba1\u7b97\u4e00\u4e0bMD5\u548csha256<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n<\/div><\/figure>\n\n\n\noriginal.exe \u548c packed.exe \u7684\u54c8\u5e0c\u4e00\u5b9a\u4e0d\u540c\uff0coriginal.exe \u548c unpacked.exe \u7684\u54c8\u5e0c\u4e5f\u901a\u5e38\u4e0d\u540c\u3002\u56e0\u4e3a\u52a0\u58f3\u518d\u6062\u590d\u540e\u4e0d\u4e00\u5b9a\u5b8c\u5168\u6062\u590d\u539f\u59cb\u5b57\u8282\u6587\u4ef6\u7684\u5b57\u8282\u7ea7\u7ed3\u6784\uff0c\u6bd4\u5982\u8bf4\uff1a<\/p>\n\n\n\n
PE \u5934\u53ef\u80fd\u88ab\u91cd\u65b0\u6784\u9020\n\u8282\u8868\u4fe1\u606f\u53ef\u80fd\u548c original.exe \u4e0d\u5b8c\u5168\u4e00\u81f4\n\u8282\u7684 Raw Size\u3001VirtualSize\u3001\u5bf9\u9f50\u65b9\u5f0f\u53ef\u80fd\u4e0d\u540c\u7b49\u7b49\u4e4b\u7c7b\u7684<\/code><\/pre>\n\n\n\nDIE\u5bf9\u6bd4\u4e00\u756a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u53ef\u4ee5\u770b\u5230\u5168\u90fd\u6062\u590d\u4e86\u8282\u8868\uff0c\u5404\u79cd\u8282\u5934\u90fd\u6709\u4e86<\/p>\n\n\n\n
\u5b57\u7b26\u4e32\u4e5f\u5bf9\u6bd4\u4e00\u4e0b<\/p>\n\n\n\n
Strings>strings64.exe -nobanner -a C:\\Users\\27906\\Desktop\\tempcode\\c_c++_temp\\unpacked.exe > unpacked_strings.txt<\/code><\/pre>\n\n\n\n\u8fdb\u884c\u641c\u7d22\uff1a<\/p>\n\n\n\n
Strings>findstr \/i \"Hello Malware Analysis Test MessageBoxA USER32 KERNEL32\" unpacked_strings.txt > result_unpacked.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\npacked.exe \u4e2d\u539f\u59cb\u5b57\u7b26\u4e32\u53ef\u89c1\u6027\u8f83\u4f4e unpacked.exe \u4e2d Hello\u3001Test\u3001MessageBoxA \u7b49\u5b57\u7b26\u4e32\u91cd\u65b0\u53d8
\u5f97\u66f4\u5bb9\u6613\u770b\u5230<\/p>\n\n\n\n
\u4efb\u52a1\u4e09\uff1a\u8131\u58f3\u540e\u5206\u6790<\/h2>\n\n\n\n\u8131\u58f3\u540e\u5bfc\u5165\u8868\u5206\u6790<\/h3>\n\n\n\n
\u7528 PE-bear\u3001Detect It Easy \u6216 CFF Explorer \u6253\u5f00\uff0cunpacked.exe\u3002\u8fdb\u5165Imports \/ \u5bfc\u5165\u8868\uff0c\u91cd\u70b9\u770b\u6709\u6ca1\u6709\uff1a<\/p>\n\n\n\n
USER32.dll -> MessageBoxA
KERNEL32.dll<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8fd9\u91cc\u591a\u63d0\u4e00\u4e0b\uff0c\u5982\u679c\u662f\u7528 MinGW \u7f16\u8bd1\uff0c\u4e5f\u53ef\u80fd\u770b\u5230\uff1a<\/p>\n\n\n\n
msvcrt.dll
libgcc
KERNEL32.dll
USER32.dll<\/code><\/pre>\n\n\n\n\u5982\u679c\u7528 Visual Studio \u9759\u6001\u94fe\u63a5\uff0c\u5bfc\u5165\u8868\u53ef\u80fd\u4f1a\u6709\u5dee\u5f02\uff0c\u4f46\u5173\u952e\u8fd8\u662f\u770bMessageBoxA <\/code>\u662f\u5426\u6062\u590d\u53ef\u89c1<\/p>\n\n\n\n\u7528IDA Pro \u5206\u6790<\/h3>\n\n\n\n<\/div><\/figure>\n\n\n\n\u53ef\u4ee5\u770b\u5230unpacked.exe\u4e2d\u7684\u5165\u53e3\u70b9\u5e94\u8be5\u66f4\u50cf\u6b63\u5e38\u7a0b\u5e8f\u521d\u59cb\u5316\u903b\u8f91\uff0c\u53ef\u80fd\u7ecf\u8fc7 C Runtime<\/code> \u542f\u52a8\u51fd\u6570\uff0c\u518d\u8fdb\u5165
main<\/code>\u6216WinMain<\/code><\/p>\n\n\n\n\u7528\u5b57\u7b26\u4e32\u5b9a\u4f4d MessageBoxA \u903b\u8f91\uff0c\u5728 IDA \u91cc\u6309Shift + F12 \u6253\u5f00\u5b57\u7b26\u4e32\u7a97\u53e3\uff0c\u641c\u7d22Hello, Malware Analysis!
<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u7136\u540e\u6309X\u67e5\u770b\u4ea4\u53c9\u5f15\u7528<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u627e\u5230\u5f15\u7528\u8fd9\u4e9b\u5b57\u7b26\u4e32\u7684\u51fd\u6570\u540e\uff0c\u901a\u5e38\u5c31\u80fd\u770b\u5230\u7c7b\u4f3c<\/p>\n\n\n\n
push 0\npush offset Caption ; \"Test\"\npush offset Text ; \"Hello, Malware Analysis!\"\npush 0\ncall MessageBoxA <\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u5bf9\u6bd4\u52a0\u58f3\u524d\u548c\u52a0\u58f3\u540e\uff1a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u4efb\u52a1\u56db\uff1a\u624b\u52a8\u8131\u58f3\u539f\u7406\u63a2\u7a76<\/h2>\n\n\n\n\u65b9\u6cd5\u4e00\uff1aESP \/ RSP \u5b9a\u5f8b\u6cd5<\/h3>\n\n\n\n
\u7528 x64dbg \u6253\u5f00 packed.exe\uff0c\u6253\u5f00 x64dbg\uff1aFile -> Open -> packed.exe\u3002\u52a0\u8f7d\u540e\u7a0b\u5e8f\u4f1a\u505c\u5728\u5165\u53e3\u70b9\uff0c\u73b0\u5728\u770b\u5230\u7684\u5165\u53e3\u70b9\u4e00\u822c\u4e0d\u662f\u539f\u59cb\u7a0b\u5e8f\u903b\u8f91\uff0c\u800c\u662f UPX \u58f3\u4ee3\u7801<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8bb0\u5f55\u5165\u53e3\u70b9\u5904\u7684 ESP \/ RSP<\/strong><\/p>\n\n\n\n\u5728\u53f3\u4fa7\u5bc4\u5b58\u5668\u7a97\u53e3\u627e\u5230\uff1aRSP RIP<\/p>\n\n\n\n
\u8bb0\u5f55\u4e0b\u6765RSP = 000000000062F4A8 RIP 0000000000423F1A<\/p>\n\n\n\n
\u5728\u6808\u5730\u5740\u4e0a\u8bbe\u7f6e\u786c\u4ef6\u65ad\u70b9<\/strong><\/p>\n\n\n\n\u5728\u5bc4\u5b58\u5668\u7a97\u53e3RSP\u91cc\u53f3\u952e\u8bbe\u7f6e\u65ad\u70b9\u4e8eRSP<\/p>\n\n\n\n
\u8fd0\u884c\u76f4\u5230\u65ad\u70b9\u89e6\u53d1<\/strong><\/p>\n\n\n\n\u6309F9\uff0c\u8ba9\u7a0b\u5e8f\u8fd0\u884c\uff1b\u5982\u679c\u65ad\u70b9\u89e6\u53d1\uff0c\u8bf4\u660e\u7a0b\u5e8f\u5df2\u7ecf\u8fd0\u884c\u5230\u58f3\u4ee3\u7801\u540e\u534a\u6bb5\uff0c\u901a\u5e38\u63a5\u8fd1 OEP\uff0c\u8fd9\u65f6\u4e0d\u8981\u7ee7\u7eed\u76f4\u63a5 F9\uff0c\u5e94\u8be5\u5355\u6b65\u89c2\u5bdf<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u4f7f\u7528\uff1aF7\uff1a\u6b65\u5165 F8\uff1a\u6b65\u8fc7\uff0c\u89c2\u5bdf\u9644\u8fd1\u4ee3\u7801<\/p>\n\n\n\n
64 \u4f4d\u7a0b\u5e8f\uff0c\u53ef\u80fd\u6ca1\u6709popad <\/code>\uff0c\u4f46\u8981\u627e\u7684\u662f\uff1a<\/p>\n\n\n\n\u4ece UPX \u58f3\u4ee3\u7801\u533a\u57df\u8df3\u8f6c\u5230\u539f\u59cb\u4ee3\u7801\u533a\u57df\u7684 JMP<\/code><\/pre>\n\n\n\n\u5224\u65ad\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
\u5f53\u524d\u4ee3\u7801\u5728 UPX1 \u6216\u58f3\u4ee3\u7801\u533a\u57df\uff1b
JMP \u76ee\u6807\u8df3\u5230\u4e86\u53e6\u4e00\u4e2a\u5185\u5b58\u533a\u57df\uff1b
\u8df3\u8f6c\u540e\u4ee3\u7801\u66f4\u50cf\u6b63\u5e38\u7a0b\u5e8f\u521d\u59cb\u5316\u903b\u8f91\uff1b
\u8df3\u8f6c\u540e\u80fd\u901a\u8fc7\u5b57\u7b26\u4e32\u4ea4\u53c9\u5f15\u7528\u627e\u5230 MessageBoxA \u903b\u8f91\u3002<\/code><\/pre>\n\n\n\n\u901a\u8fc7\u5bfb\u627e\uff0c\u627e\u5230\u4e86OEP\u6240\u5728\u4f4d\u7f6e<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u73b0\u5728\u5df2\u7ecf\u505c\u5728 OEP\uff0c\u5185\u5b58\u4e2d\u539f\u59cb\u4ee3\u7801\u5df2\u7ecf\u89e3\u538b\u597d\u4e86
\u53ef\u4ee5\u770b\u5230
OEP VA = 0000000000401500
ImageBase = 0000000000400000
OEP RVA = 00001500
\u5728 x64dbg \u91cc\u6253\u5f00 Scylla
\u9009\u62e9\u5f53\u524d\u8c03\u8bd5\u8fdb\u7a0bpacked.exe<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u4fee\u590d\u5bfc\u5165\u8868\uff0c\u4f9d\u6b21\u70b9\uff1a<\/p>\n\n\n\n
IAT Autosearch
Get Imports
Dump \u4fdd\u5b58\u4e3adump2.exe
Fix Dump \u9009\u62e9dump2.exe \u8f93\u51fa\u4e00\u4e2a\u65b0\u7684.exe\u6587\u4ef6 \u8fd9\u5c31\u662f\u6211\u4eec\u624b\u52a8\u8131\u58f3\u540e\u7684\u4ea7\u7269<\/code><\/pre>\n\n\n\n\u5982\u679c Get Imports \u4e4b\u540e\u770b\u5230\uff1a<\/p>\n\n\n\n
USER32.dll -> MessageBoxA
KERNEL32.dll<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u63a5\u4e0b\u6765\u5c31\u6765\u9a8c\u8bc1\u624b\u52a8\u8131\u58f3\u3002\u9996\u5148\u5148\u53cc\u51fb\u624b\u52a8\u8131\u58f3\u540e\u7684\u6837\u672c<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u770b\u8d77\u6765\u6ca1\u95ee\u9898\uff0c\u63a5\u7740\u7528DIE\u53bb\u5bf9\u6bd4\u81ea\u52a8\u8131\u58f3\u7684.exe \u770b\u5bfc\u5165\u8868\uff0c\u57fa\u672c\u4e0a\u5df2\u7ecf\u6062\u590d\u4e86\u4e4b\u524d\u8bbe\u7f6e\u7684\u51fd\u6570<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u7528 strings \u9a8c\u8bc1\u5b57\u7b26\u4e32\uff0c\u6267\u884c\uff1a<\/p>\n\n\n\n
strings64.exe -nobanner -a dump2_SCY.exe > dump2_SCY_strings.txt<\/code><\/pre>\n\n\n\n\u641c\u7d22\uff1a<\/p>\n\n\n\n
findstr \/i \"Hello Malware Analysis Test MessageBoxA USER32\" dump2_SCY_strings.txt > result.txt<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8fd9\u4e2a\u58f3\u5c31\u7b97\u662f\u624b\u52a8\u8131\u4e0b\u6765\u6210\u529f\u4e86<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4efb\u52a1\u4e00 \u524d\u9762\u5728\u6076\u610f\u4ee3\u7801\u5206\u6790\uff08\u4e00\uff09\u4e2d\u5df2\u7ecf\u63d0\u5230\u4e86\u52a0\u58f3\u4e0e\u8131\u58f3\uff0c\u4ee5\u53ca\u4e00\u4e9b\u5224\u65ad\u6587\u4ef6\u662f\u5426\u52a0\u58f3\u7684\u624b\u6bb5\u548c\u4f7f\u7528upx\u8131\u58f3\uff0c\u8fd9\u4e2a\u4e13 […]<\/p>\n","protected":false},"author":1,"featured_media":1131,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[58,57],"tags":[],"class_list":["post-1082","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-58","category-57"],"_links":{"self":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/1082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1082"}],"version-history":[{"count":2,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/1082\/revisions"}],"predecessor-version":[{"id":1130,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/posts\/1082\/revisions\/1130"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=\/wp\/v2\/media\/1131"}],"wp:attachment":[{"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1082"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/47.121.202.229\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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