Reverse Engineering for Beginners

CHAPTER 49. INCORRECTLY DISASSEMBLED CODE CHAPTER 49. INCORRECTLY DISASSEMBLED CODE

mov ds:93CA685DF98A90F9h, eax

jnz short near ptr loc_AF3+6

out dx, eax

cwde

mov bh, 5Dh ; ']'

movsb

pop rbp

Listing 49.3: random noise (ARM (ARM mode))

BLNE 0xFE16A9D8
BGE 0x1634D0C
SVCCS 0x450685
STRNVT R5, [PC],#-0x964
LDCGE p6, c14, [R0],#0x168
STCCSL p9, c9, [LR],#0x14C
CMNHIP PC, R10,LSL#22
FLDMIADNV LR!, {D4}
MCR p5, 2, R2,c15,c6, 4
BLGE 0x1139558
BLGT 0xFF9146E4
STRNEB R5, [R4],#0xCA2
STMNEIB R5, {R0,R4,R6,R7,R9-SP,PC}
STMIA R8, {R0,R2-R4,R7,R8,R10,SP,LR}^
STRB SP, [R8],PC,ROR#18
LDCCS p9, c13, [R6,#0x1BC]
LDRGE R8, [R9,#0x66E]
STRNEB R5, [R8],#-0x8C3
STCCSL p15, c9, [R7,#-0x84]
RSBLS LR, R2, R11,ASR LR
SVCGT 0x9B0362
SVCGT 0xA73173
STMNEDB R11!, {R0,R1,R4-R6,R8,R10,R11,SP}
STR R0, [R3],#-0xCE4
LDCGT p15, c8, [R1,#0x2CC]
LDRCCB R1, [R11],-R7,ROR#30
BLLT 0xFED9D58C
BL 0x13E60F4
LDMVSIB R3!, {R1,R4-R7}^
USATNE R10, #7, SP,LSL#11
LDRGEB LR, [R1],#0xE56
STRPLT R9, [LR],#0x567
LDRLT R11, [R1],#-0x29B
SVCNV 0x12DB29
MVNNVS R5, SP,LSL#25
LDCL p8, c14, [R12,#-0x288]
STCNEL p2, c6, [R6,#-0xBC]!
SVCNV 0x2E5A2F
BLX 0x1A8C97E
TEQGE R3, #0x1100000
STMLSIA R6, {R3,R6,R10,R11,SP}
BICPLS R12, R2, #0x5800
BNE 0x7CC408
TEQGE R2, R4,LSL#20
SUBS R1, R11, #0x28C
BICVS R3, R12, R7,ASR R0
LDRMI R7, [LR],R3,LSL#21
BLMI 0x1A79234
STMVCDB R6, {R0-R3,R6,R7,R10,R11}
EORMI R12, R6, #0xC5
MCRRCS p1, 0xF, R1,R3,c2

Listing 49.4: random noise (ARM (Thumb mode))

LSRS R3, R6, #0x12

LDRH R1, [R7,#0x2C]

SUBS R0, #0x55 ; 'U'

ADR R1, loc_3C

LDR R2, [SP,#0x218]

CMP R4, #0x86