Convert the following 32bit values to assembly code If the i

Convert the following 32-bit values to assembly code. If the instruction is a branch instruction, determine the address of the target using a starting of the file as 0x00400000. If the instruction is a jump type, determine the address of the target instruction. Identify any illegal or improperly formatted instruction.

Address

Instruction

Assembly Language Instruction

00400000

04CF1ED8

00400004

8DD3C318

00400008

2FFF21B5

0040000C

BC812DE2

00400010

1F0947BA

00400014

000000C0

00400018

4981CFED

Address	Instruction	Assembly Language Instruction
00400000	04CF1ED8
00400004	8DD3C318
00400008	2FFF21B5
0040000C	BC812DE2
00400010	1F0947BA
00400014	000000C0
00400018	4981CFED

Solution

Address

Instruction

Assembly Language Instruction

00400000

04CF1ED8

add al,0xcf
push ds
.byte 0xd8

Raw Hex (zero bytes in bold):

04CF1ED8   

String Literal:

\"\\x04\\xCF\\x1E\\xD8\"

Array Literal:

{ 0x04, 0xCF, 0x1E, 0xD8 }

Disassembly:

0: 04 cf add al,0xcf
2: 1e push ds
3: d8 .byte 0xd8

00400004

8DD3C318

add al,0xcf
push ds
.byte 0xd8

Raw Hex (zero bytes in bold):

04CF1ED8   

String Literal:

\"\\x04\\xCF\\x1E\\xD8\"

Array Literal:

{ 0x04, 0xCF, 0x1E, 0xD8 }

Disassembly:

0: 04 cf add al,0xcf
2: 1e push ds
3: d8 .byte 0xd8

00400008

2FFF21B5

das
jmp DWORD PTR [ecx]
.byte 0xb5

Raw Hex (zero bytes in bold):

2FFF21B5   

String Literal:

\"\\x2F\\xFF\\x21\\xB5\"

Array Literal:

{ 0x2F, 0xFF, 0x21, 0xB5 }

Disassembly:

0: 2f das
1: ff 21 jmp DWORD PTR [ecx]
3: b5 .byte 0xb5

0040000C

BC812DE2

.byte 0xbc
.byte 0x81
.byte 0x2d
.byte 0xe2

Raw Hex (zero bytes in bold):

BC812DE2   

String Literal:

\"\\xBC\\x81\\x2D\\xE2\"

Array Literal:

{ 0xBC, 0x81, 0x2D, 0xE2 }

Disassembly:

0: bc .byte 0xbc
1: 81 .byte 0x81
2: 2d .byte 0x2d
3: e2 .byte 0xe2

00400010

1F0947BA

pop ds
or DWORD PTR [edi-0x46],eax

Raw Hex (zero bytes in bold):

1F0947BA   

String Literal:

\"\\x1F\\x09\\x47\\xBA\"

Array Literal:

{ 0x1F, 0x09, 0x47, 0xBA }

Disassembly:

0: 1f pop ds
1: 09 47 ba or DWORD PTR [edi-0x46],eax

00400014

000000C0

add BYTE PTR [eax],al
add al,al

Raw Hex (zero bytes in bold):

000000C0   

String Literal:

\"\\x00\\x00\\x00\\xC0\"

Array Literal:

{ 0x00, 0x00, 0x00, 0xC0 }

Disassembly:

0: 00 00 add BYTE PTR [eax],al
2: 00 c0 add al,al

00400018

4981CFED

dec ecx
.byte 0x81
iret
in eax,dx

Raw Hex (zero bytes in bold):

4981CFED   

String Literal:

\"\\x49\\x81\\xCF\\xED\"

Array Literal:

{ 0x49, 0x81, 0xCF, 0xED }

Disassembly:

0: 49 dec ecx
1: 81 .byte 0x81
2: cf iret
3: ed in eax,dx

Address	Instruction	Assembly Language Instruction	Explaination
00400000	04CF1ED8	add al,0xcf push ds .byte 0xd8	Raw Hex (zero bytes in bold): 04CF1ED8    String Literal: \"\\x04\\xCF\\x1E\\xD8\" Array Literal: { 0x04, 0xCF, 0x1E, 0xD8 } Disassembly: 0: 04 cf add al,0xcf 2: 1e push ds 3: d8 .byte 0xd8
00400004	8DD3C318	add al,0xcf push ds .byte 0xd8	Raw Hex (zero bytes in bold): 04CF1ED8    String Literal: \"\\x04\\xCF\\x1E\\xD8\" Array Literal: { 0x04, 0xCF, 0x1E, 0xD8 } Disassembly: 0: 04 cf add al,0xcf 2: 1e push ds 3: d8 .byte 0xd8
00400008	2FFF21B5	das jmp DWORD PTR [ecx] .byte 0xb5	Raw Hex (zero bytes in bold): 2FFF21B5    String Literal: \"\\x2F\\xFF\\x21\\xB5\" Array Literal: { 0x2F, 0xFF, 0x21, 0xB5 } Disassembly: 0: 2f das 1: ff 21 jmp DWORD PTR [ecx] 3: b5 .byte 0xb5
0040000C	BC812DE2	.byte 0xbc .byte 0x81 .byte 0x2d .byte 0xe2	Raw Hex (zero bytes in bold): BC812DE2    String Literal: \"\\xBC\\x81\\x2D\\xE2\" Array Literal: { 0xBC, 0x81, 0x2D, 0xE2 } Disassembly: 0: bc .byte 0xbc 1: 81 .byte 0x81 2: 2d .byte 0x2d 3: e2 .byte 0xe2
00400010	1F0947BA	pop ds or DWORD PTR [edi-0x46],eax	Raw Hex (zero bytes in bold): 1F0947BA    String Literal: \"\\x1F\\x09\\x47\\xBA\" Array Literal: { 0x1F, 0x09, 0x47, 0xBA } Disassembly: 0: 1f pop ds 1: 09 47 ba or DWORD PTR [edi-0x46],eax
00400014	000000C0	add BYTE PTR [eax],al add al,al	Raw Hex (zero bytes in bold): 000000C0    String Literal: \"\\x00\\x00\\x00\\xC0\" Array Literal: { 0x00, 0x00, 0x00, 0xC0 } Disassembly: 0: 00 00 add BYTE PTR [eax],al 2: 00 c0 add al,al
00400018	4981CFED	dec ecx .byte 0x81 iret in eax,dx	Raw Hex (zero bytes in bold): 4981CFED    String Literal: \"\\x49\\x81\\xCF\\xED\" Array Literal: { 0x49, 0x81, 0xCF, 0xED } Disassembly: 0: 49 dec ecx 1: 81 .byte 0x81 2: cf iret 3: ed in eax,dx