Code:

02081E04 E89B01F0 ldmia r11,{r4-r8}
02081E08 E51FC080 ldr r12,=#0x5A827999 ; k = 5A827999 [2081D90]
02081E0C E3A09000 mov r9,#0x0 ; i = 0
02081E10 E005A006 and r10,r5,r6 ; (b and c)
02081E14 E1E0E005 mvn r14,r5 ; (not b)
02081E18 E00EE007 and r14,r14,r7 ; ((not b) and d)
02081E1C E18AA00E orr r10,r10,r14 ; f = (b and c) or ((not b) and d)
02081E20 E08AA00C add r10,r10,r12 ; temp = f + k
02081E24 E209E00F and r14,r9,#0xF ; j = i mod 16
02081E28 E79DE10E ldr r14,[r13,r14,lsl #0x2]; retrieve w[i]
02081E2C E08AA008 add r10,r10,r8 ; temp = temp + e
02081E30 E08AA00E add r10,r10,r14 ; temp = temp + r14 (w[i]?)
02081E34 E08AADE4 add r10,r10,r4,ror #0x1B ; temp = temp + (a left-rotate 5)
02081E38 E1A08007 mov r8,r7 ; (e = d)
02081E3C E1A07006 mov r7,r6 ; (d = c)
02081E40 E1A06165 mov r6,r5,ror #0x2 ; (c = b left-rotate 30)
02081E44 E1A05004 mov r5,r4 ; (b = a)
02081E48 E1A0400A mov r4,r10 ; (a = temp)
02081E4C E2899001 add r9,r9,#0x1 ; i++
02081E50 E3590010 cmp r9,#0x10 ; loop while (i < 15)
02081E54 1AFFFFED bne #0x2081E10
02081E58 E005A006 and r10,r5,r6 ; (b and c)
02081E5C E1E0E005 mvn r14,r5 ; (not b)
02081E60 E00EE007 and r14,r14,r7 ; ((not b) and d)
02081E64 E18AA00E orr r10,r10,r14 ; f = (b and c) or ((not b) and d)
02081E68 E08AA00C add r10,r10,r12 ; f + k
02081E6C E2492010 sub r2,r9,#0x10 ; r2 = i - 16
02081E70 E202200F and r2,r2,#0xF
02081E74 E249E00E sub r14,r9,#0xE ; r14 = i - 14
02081E78 E20EE00F and r14,r14,#0xF
02081E7C E79D3102 ldr r3,[r13,r2,lsl #0x2] ; load w[i-16] into r3
02081E80 E79D110E ldr r1,[r13,r14,lsl #0x2] ; load w[i-14] into r1
02081E84 E249E008 sub r14,r9,#0x8 ; r14 = i - 8
02081E88 E0233001 eor r3,r3,r1 ; w[i-14] XOR w[i-16]
02081E8C E20EE00F and r14,r14,#0xF ;
02081E90 E79D110E ldr r1,[r13,r14,lsl #0x2] ; load w[i-8] into r1
02081E94 E2492003 sub r2,r9,#0x3 ; r14 = i - 3
02081E98 E0233001 eor r3,r3,r1 ; w[i-8] XOR w[i-16] XOR w[i-14]
02081E9C E202200F and r2,r2,#0xF ;
02081EA0 E79D1102 ldr r1,[r13,r2,lsl #0x2] ; load w[i-3] into r1
02081EA4 E209200F and r2,r9,#0xF
02081EA8 E0233001 eor r3,r3,r1 ; w[i-3] XOR w[i-8] XOR w[i-16] XOR w[i-14]
02081EAC E1A03FE3 mov r3,r3,ror #0x1F ; left-rotate 1
02081EB0 E78D3102 str r3,[r13,r2,lsl #0x2]
02081EB4 E209E00F and r14,r9,#0xF
02081EB8 E79DE10E ldr r14,[r13,r14,lsl #0x2]
02081EBC E08AA008 add r10,r10,r8
02081EC0 E08AA00E add r10,r10,r14
02081EC4 E08AADE4 add r10,r10,r4,ror #0x1B
02081EC8 E1A08007 mov r8,r7
02081ECC E1A07006 mov r7,r6
02081ED0 E1A06165 mov r6,r5,ror #0x2
02081ED4 E1A05004 mov r5,r4
02081ED8 E1A0400A mov r4,r10
02081EDC E2899001 add r9,r9,#0x1
02081EE0 E3590014 cmp r9,#0x14 ; while (i < 20)
02081EE4 1AFFFFDB bne #0x2081E58 ; else
02081EE8 E51FC15C ldr r12,=#0x6ED9EBA1 ; constant used in second phase
02081EEC E025A006 eor r10,r5,r6 ; b xor c
02081EF0 E02AA007 eor r10,r10,r7 ; b xor c xor d
02081EF4 E08AA00C add r10,r10,r12 ; f + k
02081EF8 E2492010 sub r2,r9,#0x10
02081EFC E202200F and r2,r2,#0xF
02081F00 E249E00E sub r14,r9,#0xE
02081F04 E20EE00F and r14,r14,#0xF
02081F08 E79D3102 ldr r3,[r13,r2,lsl #0x2]
02081F0C E79D110E ldr r1,[r13,r14,lsl #0x2]
02081F10 E249E008 sub r14,r9,#0x8
02081F14 E0233001 eor r3,r3,r1
02081F18 E20EE00F and r14,r14,#0xF
02081F1C E79D110E ldr r1,[r13,r14,lsl #0x2]
02081F20 E2492003 sub r2,r9,#0x3
02081F24 E0233001 eor r3,r3,r1
02081F28 E202200F and r2,r2,#0xF
02081F2C E79D1102 ldr r1,[r13,r2,lsl #0x2]
02081F30 E209200F and r2,r9,#0xF
02081F34 E0233001 eor r3,r3,r1
02081F38 E1A03FE3 mov r3,r3,ror #0x1F
02081F3C E78D3102 str r3,[r13,r2,lsl #0x2]
02081F40 E209E00F and r14,r9,#0xF
02081F44 E79DE10E ldr r14,[r13,r14,lsl #0x2]
02081F48 E08AA008 add r10,r10,r8
02081F4C E08AA00E add r10,r10,r14
02081F50 E08AADE4 add r10,r10,r4,ror #0x1B
02081F54 E1A08007 mov r8,r7
02081F58 E1A07006 mov r7,r6
02081F5C E1A06165 mov r6,r5,ror #0x2
02081F60 E1A05004 mov r5,r4
02081F64 E1A0400A mov r4,r10
02081F68 E2899001 add r9,r9,#0x1
02081F6C E3590028 cmp r9,#0x28 ; while (i < 40)
02081F70 1AFFFFDD bne #0x2081EEC
02081F74 E51FC1E4 ldr r12,=#0x8F1BBCDC
02081F78 E005A006 and r10,r5,r6
02081F7C E005E007 and r14,r5,r7
02081F80 E18AA00E orr r10,r10,r14
02081F84 E006E007 and r14,r6,r7
02081F88 E18AA00E orr r10,r10,r14
02081F8C E08AA00C add r10,r10,r12
02081F90 E2492010 sub r2,r9,#0x10
02081F94 E202200F and r2,r2,#0xF
02081F98 E249E00E sub r14,r9,#0xE
02081F9C E20EE00F and r14,r14,#0xF
02081FA0 E79D3102 ldr r3,[r13,r2,lsl #0x2]
02081FA4 E79D110E ldr r1,[r13,r14,lsl #0x2]
02081FA8 E249E008 sub r14,r9,#0x8
02081FAC E0233001 eor r3,r3,r1
02081FB0 E20EE00F and r14,r14,#0xF
02081FB4 E79D110E ldr r1,[r13,r14,lsl #0x2]
02081FB8 E2492003 sub r2,r9,#0x3
02081FBC E0233001 eor r3,r3,r1
02081FC0 E202200F and r2,r2,#0xF
02081FC4 E79D1102 ldr r1,[r13,r2,lsl #0x2]
02081FC8 E209200F and r2,r9,#0xF
02081FCC E0233001 eor r3,r3,r1
02081FD0 E1A03FE3 mov r3,r3,ror #0x1F
02081FD4 E78D3102 str r3,[r13,r2,lsl #0x2]
02081FD8 E209E00F and r14,r9,#0xF
02081FDC E79DE10E ldr r14,[r13,r14,lsl #0x2]
02081FE0 E08AA008 add r10,r10,r8
02081FE4 E08AA00E add r10,r10,r14
02081FE8 E08AADE4 add r10,r10,r4,ror #0x1B
02081FEC E1A08007 mov r8,r7
02081FF0 E1A07006 mov r7,r6
02081FF4 E1A06165 mov r6,r5,ror #0x2
02081FF8 E1A05004 mov r5,r4
02081FFC E1A0400A mov r4,r10
02082000 E2899001 add r9,r9,#0x1
02082004 E359003C cmp r9,#0x3C
02082008 1AFFFFDA bne #0x2081F78
0208200C E51FC278 ldr r12,=#0xCA62C1D6
02082010 E025A006 eor r10,r5,r6
02082014 E02AA007 eor r10,r10,r7
02082018 E08AA00C add r10,r10,r12
0208201C E2492010 sub r2,r9,#0x10
02082020 E202200F and r2,r2,#0xF
02082024 E249E00E sub r14,r9,#0xE
02082028 E20EE00F and r14,r14,#0xF
0208202C E79D3102 ldr r3,[r13,r2,lsl #0x2]
02082030 E79D110E ldr r1,[r13,r14,lsl #0x2]
02082034 E249E008 sub r14,r9,#0x8
02082038 E0233001 eor r3,r3,r1
0208203C E20EE00F and r14,r14,#0xF
02082040 E79D110E ldr r1,[r13,r14,lsl #0x2]
02082044 E2492003 sub r2,r9,#0x3
02082048 E0233001 eor r3,r3,r1
0208204C E202200F and r2,r2,#0xF
02082050 E79D1102 ldr r1,[r13,r2,lsl #0x2]
02082054 E209200F and r2,r9,#0xF
02082058 E0233001 eor r3,r3,r1
0208205C E1A03FE3 mov r3,r3,ror #0x1F
02082060 E78D3102 str r3,[r13,r2,lsl #0x2]
02082064 E209E00F and r14,r9,#0xF
02082068 E79DE10E ldr r14,[r13,r14,lsl #0x2]
0208206C E08AA008 add r10,r10,r8
02082070 E08AA00E add r10,r10,r14
02082074 E08AADE4 add r10,r10,r4,ror #0x1B
02082078 E1A08007 mov r8,r7
0208207C E1A07006 mov r7,r6
02082080 E1A06165 mov r6,r5,ror #0x2
02082084 E1A05004 mov r5,r4
02082088 E1A0400A mov r4,r10
0208208C E2899001 add r9,r9,#0x1
02082090 E3590050 cmp r9,#0x50
02082094 1AFFFFDD bne #0x2082010
02082094 1AFFFFDD bne #0x2082010
02082098 E89B060E ldmia r11,{r1-r3,r9,r10}
0208209C E0811004 add r1,r1,r4
020820A0 E0822005 add r2,r2,r5
020820A4 E0833006 add r3,r3,r6
020820A8 E0899007 add r9,r9,r7
020820AC E08AA008 add r10,r10,r8
020820B0 E88B060E stmia r11,{r1-r3,r9,r10} ; stored in 2FE36CC, 2FE36D0, 2FE36D4, 2FE36D8, 2FE36DC
020820B4 E28DD040 add r13,r13,#0x40
020820B8 E8BD9FF0 ldmfd r13!,{r4-r12,r15}
020820BC E92D4008 stmfd r13!,{r3,r14}
020820C0 EB000EE6 bl #0x2085C60

Step 3
Code:

020814BC E8941020 ldmia r4,{r5,r12}
020814C0 E1A01C25 mov r1,r5,lsr #0x18 ; right shift 24 (first 32bits of SHA-1)
020814C4 E20170FF and r7,r1,#0xFF ;
020814C8 E1A01006 mov r1,r6 ;
020814CC E1A06C05 mov r6,r5,lsl #0x18 ; left shift 24 (first 32bits of SHA-1)
020814D0 E206E4FF and r14,r6,#0xFF000000
020814D4 E1A06405 mov r6,r5,lsl #0x8 ; left shift 8 (first 32bits of SHA-1)
020814D8 E1A05425 mov r5,r5,lsr #0x8 ; right shift 8 (first 32bits of SHA-1)
020814DC E2055CFF and r5,r5,#0xFF00
020814E0 E20668FF and r6,r6,#0xFF0000
020814E4 E1875005 orr r5,r7,r5
020814E8 E1865005 orr r5,r6,r5
020814EC E18E5005 orr r5,r14,r5 ; list pairs in reverse order (WWXXYYZZ becomes ZZYYXXWW)
020814F0 E1A06C2C mov r6,r12,lsr #0x18 ; right shift 24 (second 32bits of SHA-1)
020814F4 E5845000 str r5,[r4] ; store 1st 32bits, reordered
020814F8 E1A0542C mov r5,r12,lsr #0x8 ; right shift 8 (second 32bits of SHA-1)
020814FC E5943008 ldr r3,[r4,#0x8] ; load third 32bits
02081500 E20660FF and r6,r6,#0xFF
02081504 E2055CFF and r5,r5,#0xFF00
02081508 E1866005 orr r6,r6,r5
0208150C E1A05C23 mov r5,r3,lsr #0x18 ; right shift 24 (third 32bits of SHA-1)
02081510 E205E0FF and r14,r5,#0xFF
02081514 E1A05C0C mov r5,r12,lsl #0x18 ; left shift 24 (second 32bits of SHA-1)
02081518 E20574FF and r7,r5,#0xFF000000
0208151C E1A0540C mov r5,r12,lsl #0x8 ; left shift 8 (second 32bits of SHA-1)
02081520 E20558FF and r5,r5,#0xFF0000
02081524 E1855006 orr r5,r5,r6
02081528 E1876005 orr r6,r7,r5
0208152C E1A05423 mov r5,r3,lsr #0x8 ; right shift 8 (third 32bits of SHA-1)
02081530 E2055CFF and r5,r5,#0xFF00
02081534 E594200C ldr r2,[r4,#0xC] ; load fourth 32bits
02081538 E5846004 str r6,[r4,#0x4] ; store 2nd 32bits, reordered
0208153C E1A06C22 mov r6,r2,lsr #0x18 ; right shift 24 (fourth 32bits of SHA-1)
02081540 E18EE005 orr r14,r14,r5
02081544 E1A05422 mov r5,r2,lsr #0x8 ; right shift 8 (fourth 32bits of SHA-1)
02081548 E5940010 ldr r0,[r4,#0x10] ; load fifth 32bits
0208154C E20660FF and r6,r6,#0xFF
02081550 E2055CFF and r5,r5,#0xFF00
02081554 E186C005 orr r12,r6,r5
02081558 E1A05C20 mov r5,r0,lsr #0x18 ; right shift 24 (fifth 32bits of SHA-1)
0208155C E20560FF and r6,r5,#0xFF
02081560 E1A05C03 mov r5,r3,lsl #0x18 ; left shift 24 (third 32bits of SHA-1)
02081564 E1A03403 mov r3,r3,lsl #0x8 ; left shift 8 (third 32bits of SHA-1)
02081568 E20338FF and r3,r3,#0xFF0000
0208156C E20554FF and r5,r5,#0xFF000000
02081570 E183300E orr r3,r3,r14
02081574 E1853003 orr r3,r5,r3
02081578 E5843008 str r3,[r4,#0x8] ; store 3rd 32bits, reordered
0208157C E1A03402 mov r3,r2,lsl #0x8 ; left shift 8 (fourth 32bits of SHA-1)
02081580 E1A02C02 mov r2,r2,lsl #0x18 ; left shift 24 (fourth 32bits of SHA-1)
02081584 E202E4FF and r14,r2,#0xFF000000
02081588 E20328FF and r2,r3,#0xFF0000
0208158C E182200C orr r2,r2,r12
02081590 E18E3002 orr r3,r14,r2
02081594 E1A05420 mov r5,r0,lsr #0x8 ; right shift 8 (fifth 32bits of SHA-1)
02081598 E1A0C400 mov r12,r0,lsl #0x8 ; left shift 8 (fifth 32bits of SHA-1)
0208159C E2052CFF and r2,r5,#0xFF00
020815A0 E1A0EC00 mov r14,r0,lsl #0x18 ; left shift 24 (fifth 32bits of SHA-1)
020815A4 E1860002 orr r0,r6,r2
020815A8 E20C58FF and r5,r12,#0xFF0000
020815AC E20E24FF and r2,r14,#0xFF000000
020815B0 E1850000 orr r0,r5,r0
020815B4 E1825000 orr r5,r2,r0
020815B8 E1A00004 mov r0,r4
020815BC E3A02014 mov r2,#0x14
020815C0 E584300C str r3,[r4,#0xC] ; store 4th 32bits, reordered
020815C4 E5845010 str r5,[r4,#0x10] ; store 5th 32bits, reordered
020815C8 EB0005A6 bl #0x2082C68

Step 4: Final Seed