Code: Select all
db "H@CK"
Code: Select all
dec ax ; 'H'
inc ax ; '@'
inc bx ; 'C'
dec bx ; 'K'
bzt wrote:Wow, nice finding!
Code: Select all
inc esi ; 'F'
inc ecx ; 'A'
push ebx ; 'S'
dec ebp ; 'M'
dec esi
dec ecx
pop ebx
inc ebpCode: Select all
dec esi ; 'N'
inc ecx ; 'A'
push ebx ; 'S'
dec ebp ; 'M'
inc esi
dec ecx
pop ebx
inc ebpCode: Select all
inc edx ; 'B'
inc ecx ; 'A'
push ebx ; 'S'
dec ebp ; 'M'
dec edx
dec ecx
pop ebx
inc ebpCode: Select all
jns .1 ; 'y'
; 'A'
push ebx ; 'S'
dec ebp ; 'M'
inc ebp
pop ebx
times 61 nop
.1:Code: Select all
dec ebp ; 'M'
inc ecx ; 'A'
push ebx ; 'S'
dec ebp ; 'M'
inc ebp
dec ecx
pop ebx
inc ebpCode: Select all
push esp ; 'T'
inc ecx ; 'A'
push ebx ; 'S'
dec ebp ; 'M'
inc ebp
pop ebx
dec ecx
pop espCode: Select all
push bp 'U'
push bx 'S'
inc bp 'E'
dec sp 'L'
inc bp 'E'
push bx 'S'
push bx 'S'dozniak wrote:Code: Select all
push bp 'U' push bx 'S' inc bp 'E' dec sp 'L' inc bp 'E' push bx 'S' push bx 'S'
Code: Select all
push ebp ; 'U'
push ebx ; 'S'
inc ebp ; 'E'
dec ebp ; 'M'
dec edi ; 'O'
push edx ; 'R'
inc ebp ; 'E'
and eax, eax ; '!'
pop edx
inc edi
pop ebx
pop ebp
omarrx024 wrote:Code: Select all
use16 dec sp ; 'L' inc cx ; 'A' dec bp ; 'M' inc bp ; 'E' inc sp dec cx
Code: Select all
use16
dec sp ; 'L'
inc cx ; 'A'
push sp ; 'T'
push cx ; 'Q'
pop cx ; 'Y'
dec di ; 'O'
push bp ; 'U'
and ax, ax ; '!'
pop bp
inc di
pop sp
dec cx
inc spglauxosdever wrote:Maybe it would be better ...
Code: Select all
use16
inc di ; 'G'
dec sp ; 'L'
inc cx ; 'A'
jne .1 ; 'u'
; 'X'
dec di ; 'O'
push bx ; 'S'
pop bx
inc di
times 84 nop
.1:
dec cx
inc sp
dec diCode: Select all
/*
* input.txt
* hello, world
*
* output.asm
* align 16
* hello_world:
* test al, 'h'
* test al, 'e'
* test al, 'l'
* test al, 'l'
* test al, 'o'
* test al, ','
* test al, ' '
* test al, 'w'
* test al, 'o'
* test al, 'r'
* test al, 'l'
* test al, 'd'
* test al, 0x00
* test al, 0x00
* test al, 0x00
* nop
* ret
*
* Example:
* txt2asm.exe hello_world < input.txt > output.asm
*/
#include <stdio.h>
int main(int argc, char *argv[])
{
unsigned i;
int c;
if (argc != 2) {
(void)fprintf(stderr, "Usage: %s <function>\n", argv[0]);
return 1;
}
(void)fprintf(stdout, "align 16\n%s:\n", argv[1]);
for (i = 0u; (c = getchar()) != EOF || !feof(stdin); i++)
if (c >= 0x20 && c < 0x7F)
(void)fprintf(stdout, "\ttest al, '%c'\n", c);
else if (c == 0x09 || c == 0x0A || c >= 0x7F && c <= 0xFF)
(void)fprintf(stdout, "\ttest al, 0x%02X\n", c);
while (i++ % 8u != 7u)
(void)fprintf(stdout, "\ttest al, 0x00\n");
(void)fprintf(stdout, "\tnop\n\tret\n");
return 0;
}
Antti wrote:Code: Select all
* hello, world
Code: Select all
dec ax ; 'H'
inc bp ; 'E'
dec sp ; 'L'
dec sp ; 'L'
dec di ; 'O'
push di ; 'W'
dec di ; 'O'
push dx ; 'R'
dec sp ; 'L'
inc sp ; 'D'
and ax, ax ; '!'
pop dx
pop di
inc di
inc sp
inc sp
dec bp
inc ax
Code: Select all
test.bin: file format binary
Disassembly of section .data:
00000000 <.data>:
0: 4e dec %si
1: 6b 6f 73 69 imul $0x69,0x73(%bx),%bp
5: 20 73 69 and %dh,0x69(%bp,%di)
8: 6b 65 6c 65 imul $0x65,0x6c(%di),%sp
c: 6c insb (%dx),%es:(%di)
d: 27 daa
e: 20 69 41 and %ch,0x41(%bx,%di)
11: 66 72 69 data32 jb 0x7d
14: 6b 61 4d 61 imul $0x61,0x4d(%bx,%di),%sp
18: 6c insb (%dx),%es:(%di)
19: 75 70 jne 0x8b
1b: 68 61 6b push $0x6b61
1e: 61 popa
1f: 6e outsb %ds:(%si),(%dx)
20: 79 69 jns 0x8b
22: 73 77 jae 0x9b
24: 20 75 70 and %dh,0x70(%di)
27: 68 6f 6e push $0x6e6f
2a: 64 6f outsw %fs:(%si),(%dx)
2c: 20 49 77 and %cl,0x77(%bx,%di)
2f: 61 popa
30: 79 6f jns 0xa1
32: 59 pop %cx
33: 69 7a 77 61 20 imul $0x2061,0x77(%bp,%si),%di
38: 69 6d 69 74 68 imul $0x6874,0x69(%di),%bp
3d: 61 popa
3e: 6e outsb %ds:(%si),(%dx)
3f: 64 61 fs popa
41: 7a 6f jp 0xb2
43: 20 79 65 and %bh,0x65(%bx,%di)
46: 74 68 je 0xb0
48: 75 2c jne 0x76
4a: 4e dec %si
4b: 6b 6f 73 69 imul $0x69,0x73(%bx),%bp
4f: 20 73 69 and %dh,0x69(%bp,%di)
52: 6b 65 6c 65 imul $0x65,0x6c(%di),%sp
56: 6c insb (%dx),%es:(%di)
57: 61 popa
58: 2c 20 sub $0x20,%al
5a: 74 68 je 0xc4
5c: 69 6e 61 20 6c imul $0x6c20,0x61(%bp),%bp
61: 75 73 jne 0xd6
63: 61 popa
64: 70 68 jo 0xce
66: 6f outsw %ds:(%si),(%dx)
67: 20 49 77 and %cl,0x77(%bx,%di)
6a: 61 popa
6b: 79 6f jns 0xdc
6d: 2e 4d cs dec %bp
6f: 6f outsw %ds:(%si),(%dx)
70: 72 65 jb 0xd7
72: 6e outsb %ds:(%si),(%dx)
73: 61 popa
74: 20 62 6f and %ah,0x6f(%bp,%si)
77: 6c insb (%dx),%es:(%di)
78: 6f outsw %ds:(%si),(%dx)
79: 6b 61 20 73 imul $0x73,0x20(%bx,%di),%sp
7d: 65 74 6a gs je 0xea
80: 68 61 62 push $0x6261
83: 61 popa
84: 20 73 61 and %dh,0x61(%bp,%di)
87: 20 68 65 and %ch,0x65(%bx,%si)
8a: 73 6f jae 0xfb
8c: 2c 4f sub $0x4f,%al
8e: 20 66 65 and %ah,0x65(%bp)
91: 64 69 73 65 20 64 imul $0x6420,%fs:0x65(%bp,%di),%si
97: 69 6e 74 77 61 imul $0x6177,0x74(%bp),%bp
9c: 20 6c 65 and %ch,0x65(%si)
9f: 20 6d 61 and %ch,0x61(%di)
a2: 74 73 je 0x117
a4: 68 77 65 push $0x6577
a7: 6e outsb %ds:(%si),(%dx)
a8: 79 65 jns 0x10f
aa: 68 6f 2c push $0x2c6f
ad: 4f dec %di
ae: 20 73 65 and %dh,0x65(%bp,%di)
b1: 20 62 6f and %ah,0x6f(%bp,%si)
b4: 6c insb (%dx),%es:(%di)
b5: 6f outsw %ds:(%si),(%dx)
b6: 6b 65 2c 20 imul $0x20,0x2c(%di),%sp
ba: 4f dec %di
bb: 20 73 65 and %dh,0x65(%bp,%di)
be: 20 62 6f and %ah,0x6f(%bp,%si)
c1: 6c insb (%dx),%es:(%di)
c2: 6f outsw %ds:(%si),(%dx)
c3: 6b 65 20 73 imul $0x73,0x20(%di),%sp
c7: 65 74 6a gs je 0x134
ca: 68 61 62 push $0x6261
cd: 61 popa
ce: 20 73 61 and %dh,0x61(%bp,%di)
d1: 20 68 65 and %ch,0x65(%bx,%si)
d4: 73 6f jae 0x145
d6: 2c 53 sub $0x53,%al
d8: 65 74 6a gs je 0x145
db: 68 61 62 push $0x6261
de: 61 popa
df: 20 73 61 and %dh,0x61(%bp,%di)
e2: 2c 20 sub $0x20,%al
e4: 53 push %bx
e5: 6f outsw %ds:(%si),(%dx)
e6: 75 74 jne 0x15c
e8: 68 20 41 push $0x4120
eb: 66 72 69 data32 jb 0x157
ee: 6b 61 2c 20 imul $0x20,0x2c(%bx,%di),%sp
f2: 53 push %bx
f3: 6f outsw %ds:(%si),(%dx)
f4: 75 74 jne 0x16a
f6: 68 20 41 push $0x4120
f9: 66 72 69 data32 jb 0x165
fc: 6b 61 2e 55 imul $0x55,0x2e(%bx,%di),%sp
100: 69 74 20 64 69 imul $0x6964,0x20(%si),%si
105: 65 20 62 6c and %ah,%gs:0x6c(%bp,%si)
109: 6f outsw %ds:(%si),(%dx)
10a: 75 20 jne 0x12c
10c: 76 61 jbe 0x16f
10e: 6e outsb %ds:(%si),(%dx)
10f: 20 6f 6e and %ch,0x6e(%bx)
112: 73 65 jae 0x179
114: 20 68 65 and %ch,0x65(%bx,%si)
117: 6d insw (%dx),%es:(%di)
118: 65 6c gs insb (%dx),%es:(%di)
11a: 2c 55 sub $0x55,%al
11c: 69 74 20 64 69 imul $0x6964,0x20(%si),%si
121: 65 20 64 69 and %ah,%gs:0x69(%si)
125: 65 70 74 gs jo 0x19c
128: 65 20 76 61 and %dh,%gs:0x61(%bp)
12c: 6e outsb %ds:(%si),(%dx)
12d: 20 6f 6e and %ch,0x6e(%bx)
130: 73 20 jae 0x152
132: 73 65 jae 0x199
134: 65 2c 4f gs sub $0x4f,%al
137: 6f outsw %ds:(%si),(%dx)
138: 72 20 jb 0x15a
13a: 6f outsw %ds:(%si),(%dx)
13b: 6e outsb %ds:(%si),(%dx)
13c: 73 20 jae 0x15e
13e: 65 77 69 gs ja 0x1aa
141: 67 65 20 67 65 and %ah,%gs:0x65(%edi)
146: 62 65 72 bound %sp,0x72(%di)
149: 67 74 65 addr32 je 0x1b1
14c: 73 2c jae 0x17a
14e: 57 push %di
14f: 61 popa
150: 61 popa
151: 72 20 jb 0x173
153: 64 69 65 20 6b 72 imul $0x726b,%fs:0x20(%di),%sp
159: 61 popa
15a: 6e outsb %ds:(%si),(%dx)
15b: 73 65 jae 0x1c2
15d: 20 61 6e and %ah,0x6e(%bx,%di)
160: 74 77 je 0x1d9
162: 6f outsw %ds:(%si),(%dx)
163: 6f outsw %ds:(%si),(%dx)
164: 72 64 jb 0x1ca
166: 20 67 65 and %ah,0x65(%bx)
169: 65 2c 53 gs sub $0x53,%al
16c: 6f outsw %ds:(%si),(%dx)
16d: 75 6e jne 0x1dd
16f: 64 73 20 fs jae 0x192
172: 74 68 je 0x1dc
174: 65 20 63 61 and %ah,%gs:0x61(%bp,%di)
178: 6c insb (%dx),%es:(%di)
179: 6c insb (%dx),%es:(%di)
17a: 20 74 6f and %dh,0x6f(%si)
17d: 20 63 6f and %ah,0x6f(%bp,%di)
180: 6d insw (%dx),%es:(%di)
181: 65 20 74 6f and %dh,%gs:0x6f(%si)
185: 67 65 74 68 addr32 gs je 0x1f1
189: 65 72 2c gs jb 0x1b8
18c: 41 inc %cx
18d: 6e outsb %ds:(%si),(%dx)
18e: 64 20 75 6e and %dh,%fs:0x6e(%di)
192: 69 74 65 64 20 imul $0x2064,0x65(%si),%si
197: 77 65 ja 0x1fe
199: 20 73 68 and %dh,0x68(%bp,%di)
19c: 61 popa
19d: 6c insb (%dx),%es:(%di)
19e: 6c insb (%dx),%es:(%di)
19f: 20 73 74 and %dh,0x74(%bp,%di)
1a2: 61 popa
1a3: 6e outsb %ds:(%si),(%dx)
1a4: 64 2c 4c fs sub $0x4c,%al
1a7: 65 74 20 gs je 0x1ca
1aa: 75 73 jne 0x21f
1ac: 20 6c 69 and %ch,0x69(%si)
1af: 76 65 jbe 0x216
1b1: 20 61 6e and %ah,0x6e(%bx,%di)
1b4: 64 20 73 74 and %dh,%fs:0x74(%bp,%di)
1b8: 72 69 jb 0x223
1ba: 76 65 jbe 0x221
1bc: 20 66 6f and %ah,0x6f(%bp)
1bf: 72 20 jb 0x1e1
1c1: 66 72 65 data32 jb 0x229
1c4: 65 64 6f gs outsw %fs:(%si),(%dx)
1c7: 6d insw (%dx),%es:(%di)
1c8: 49 dec %cx
1c9: 6e outsb %ds:(%si),(%dx)
1ca: 20 53 6f and %dl,0x6f(%bp,%di)
1cd: 75 74 jne 0x243
1cf: 68 20 41 push $0x4120
1d2: 66 72 69 data32 jb 0x23e
1d5: 63 61 20 arpl %sp,0x20(%bx,%di)
1d8: 6f outsw %ds:(%si),(%dx)
1d9: 75 72 jne 0x24d
1db: 20 6c 61 and %ch,0x61(%si)
1de: 6e outsb %ds:(%si),(%dx)
1df: 64 fs
1e0: 21 .byte 0x21
Code: Select all
db "Nkosi sikelel' iAfrika"
db "Maluphakanyisw uphondo Iwayo"
db "Yizwa imithandazo yethu,"
db "Nkosi sikelela, thina lusapho Iwayo."
db "Morena boloka setjhaba sa heso,"
db "O fedise dintwa le matshwenyeho,"
db "O se boloke, O se boloke setjhaba sa heso,"
db "Setjhaba sa, South Afrika, South Afrika."
db "Uit die blou van onse hemel,"
db "Uit die diepte van ons see,"
db "Oor ons ewige gebergtes,"
db "Waar die kranse antwoord gee,"
db "Sounds the call to come together,"
db "And united we shall stand,"
db "Let us live and strive for freedom"
db "In South Africa our land!"