컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�[MIME.ASM]컴� ; MIME attachment encoder. .386 .MODEL FLAT .DATA EXTRN ExitProcess:PROC EXTRN CreateFileA:PROC EXTRN CloseHandle:PROC EXTRN ReadFile:PROC EXTRN WriteFile:PROC EXTRN GetFileSize:PROC OPEN_EXISTING EQU 00000003h CREATE_ALWAYS EQU 00000002h FILE_ATTRIBUTE_NORMAL EQU 00000080h GENERIC_READ EQU 80000000h GENERIC_WRITE EQU 40000000h START: XOR EBX, EBX PUSH EBX PUSH FILE_ATTRIBUTE_NORMAL PUSH OPEN_EXISTING PUSH EBX PUSH EBX PUSH GENERIC_READ CALL @1 DB 'INPUT.BIN', 0 ; Binary you want to encode. @1: CALL CreateFileA MOV [Input_Handle], EAX PUSH EBX PUSH FILE_ATTRIBUTE_NORMAL PUSH CREATE_ALWAYS PUSH EBX PUSH EBX PUSH GENERIC_WRITE CALL @2 DB 'OUTPUT.EML', 0 @2: CALL CreateFileA MOV [Output_Handle], EAX PUSH EBX PUSH OFFSET IO_Bytes_Count PUSH (@4-@3) CALL @4 @3: DB 'MIME-Version: 1.0', 0Dh, 0Ah DB 'Content-Type: multipart/mixed; boundary=ir', 0Dh, 0Ah DB 0Dh, 0Ah DB '--ir', 0Dh, 0Ah DB 0Dh, 0Ah DB 'this is plain text', 0Dh, 0Ah DB '--ir', 0Dh, 0Ah DB 'Content-Type: application; name=binary.exe', 0Dh, 0Ah DB 'Content-Transfer-Encoding: base64', 0Dh, 0Ah DB 0Dh, 0Ah @4: PUSH [Output_Handle] CALL WriteFile PUSH EBX PUSH [Input_Handle] CALL GetFileSize CDQ MOV ECX, (76/4)*3 DIV ECX DEC EDX JS No_Round INC EAX No_Round: XCHG ECX, EAX Encode_Line: PUSH ECX MOV ESI, OFFSET Input_Buffer PUSH 0 PUSH OFFSET IO_Bytes_Count PUSH (76/4)*3 PUSH ESI PUSH [Input_Handle] CALL ReadFile MOV EDI, OFFSET Output_Buffer PUSH EDI PUSH 76/4 POP ECX Encode_Packet: PUSH ECX MOV CL, 8 LODSB SHL EAX, CL LODSB SHL EAX, CL LODSB SHL EAX, CL MOV EBX, OFFSET Encoding_Table MOV CL, 4 Encode_Byte: SHR EAX, 2 ROL EAX, 8 XLAT STOSB LOOP Encode_Byte POP ECX LOOP Encode_Packet MOV WORD PTR [EDI], 0A0Dh ; . POP EAX PUSH 0 PUSH OFFSET IO_Bytes_Count PUSH 78 PUSH EAX PUSH [Output_Handle] CALL WriteFile POP ECX LOOP Encode_Line PUSH 0 CALL @5 IO_Bytes_Count DD 0 @5: PUSH (@7-@6) CALL @7 @6: DB '--ir--', 0Dh, 0Ah @7: PUSH [Output_Handle] CALL WriteFile PUSH 12345678h Output_Handle = DWORD PTR $-4 CALL CloseHandle PUSH 12345678h Input_Handle = DWORD PTR $-4 CALL CloseHandle Exit: PUSH 0 CALL ExitProcess Encoding_Table: DB 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' DB 'abcdefghijklmnopqrstuvwxyz' DB '0123456789+/' Input_Buffer DB 200 DUP(0) Output_Buffer DB 200 DUP(0) END START 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�[MIME.ASM]컴� 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�[UUENCODE.ASM]컴� ; UUENCODE attachment encoder. .386 .MODEL FLAT .DATA EXTRN ExitProcess:PROC EXTRN CreateFileA:PROC EXTRN CloseHandle:PROC EXTRN ReadFile:PROC EXTRN WriteFile:PROC EXTRN GetFileSize:PROC OPEN_EXISTING EQU 00000003h CREATE_ALWAYS EQU 00000002h FILE_ATTRIBUTE_NORMAL EQU 00000080h GENERIC_READ EQU 80000000h GENERIC_WRITE EQU 40000000h START: XOR EBX, EBX PUSH EBX PUSH FILE_ATTRIBUTE_NORMAL PUSH OPEN_EXISTING PUSH EBX PUSH EBX PUSH GENERIC_READ CALL @1 DB 'INPUT.BIN', 0 @1: CALL CreateFileA MOV [Input_Handle], EAX PUSH EBX PUSH FILE_ATTRIBUTE_NORMAL PUSH CREATE_ALWAYS PUSH EBX PUSH EBX PUSH GENERIC_WRITE CALL @2 DB 'OUTPUT.UUE', 0 @2: CALL CreateFileA MOV [Output_Handle], EAX PUSH EBX PUSH OFFSET IO_Bytes_Count PUSH 22 CALL @3 DB 'begin 644 binary.exe', 0Dh, 0Ah @3: PUSH [Output_Handle] CALL WriteFile PUSH EBX PUSH [Input_Handle] CALL GetFileSize XOR EDX, EDX MOV ECX, 45 DIV ECX DEC EDX JS No_Round INC EAX No_Round: XCHG ECX, EAX Encode_Line: PUSH ECX MOV ESI, OFFSET Input_Buffer PUSH 0 PUSH OFFSET IO_Bytes_Count PUSH 45 PUSH ESI PUSH [Input_Handle] CALL ReadFile MOV EDI, OFFSET Output_Buffer CLD MOV AL, (45 + 20h) ; Decoded length of 45 bytes. STOSB PUSH (45 / 3) ; Process 45 bytes. POP ECX Encode_DWORD: LODSD DEC ESI SHL EAX, 8 MOV BH, AH ROL EAX, 8 XCHG AL, BH ROR EAX, 8 MOV AH, BH PUSH ECX PUSH 4 POP ECX Encode_Byte: SHR EAX, 2 ROR EAX, 3*8 ADD AL, 20h CMP AL, 20h ; It's a space? JNE Store_Encoded MOV AL, 60h Store_Encoded: STOSB ROL EAX, 3*8 SHL EAX, 8 LOOP Encode_Byte POP ECX LOOP Encode_DWORD MOV AX, 0A0Dh ; Store & . STOSW PUSH 0 PUSH OFFSET IO_Bytes_Count PUSH 63 PUSH OFFSET Output_Buffer PUSH [Output_Handle] CALL WriteFile POP ECX LOOP Encode_Line PUSH ECX CALL @4 IO_Bytes_Count DD 0 @4: PUSH 8 CALL @5 DB '`', 0Dh, 0Ah, 'end', 0Dh, 0Ah @5: PUSH [Output_Handle] CALL WriteFile PUSH 12345678h Output_Handle = DWORD PTR $-4 CALL CloseHandle PUSH 12345678h Input_Handle = DWORD PTR $-4 CALL CloseHandle Exit: PUSH 0 CALL ExitProcess Input_Buffer DB 45 DUP(0) Output_Buffer DB 63 DUP(0) END START 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�[UUENCODE.ASM]컴�