Function at 0x423540
Capabilities:
Encode data using base64

Disassembly:
push r15
push r14
push r13
push r12
push rbp
push rdi
push rsi
push rbx
sub rsp, 0x108
mov r12, qword [0x006bcaa8]
cmp byte [r12 + 0x1800ec], 0
mov rsi, rcx
je 0x42365c
cmp byte [r12 + 0x1800f1], 0
mov r9, qword [rcx + 0x48]
mov rbp, qword [rcx + 0x50]
je 0x423670
movabs r8, 0x7fffffffffffffff
mov rax, r9
movabs rbx, 0xffffff0000000000
add rbx, qword [rsi + 0x40]
and r8, rbp
shr rax, 0x2a
mov rdx, r8
and eax, 7
mov qword [rsi + 0x50], r8
shr rdx, 0x2a
shr rbx, 2
and edx, 7
add rax, rbx
add rdx, rbx
cmp rax, rdx
mov rdi, rdx
cmovbe rdi, rax
cmp byte [r12 + 0x1800eb], 0
jne 0x4236c0
sar rbp, 0x3f
and ebp, 2
cmp byte [rsi + 0xfe95], 0
jne 0x4236b0
lea r13, [r12 + 0x1000a8]
mov rcx, r13
call fcn.004037e0
mov rcx, qword [r12 + 0x1000c0]
test rcx, rcx
je 0x423d11
mov rax, qword [r12 + 0x1000b0]
mov edx, 1
xor r9d, r9d
jmp 0x423635
cmp rcx, rdx
jbe 0x423d11
add rax, 0x18
add rdx, 1
add r9, 1
cmp ebp, dword [rax]
jne 0x423620
cmp rcx, r9
jbe 0x423cf4
cmp rbx, qword [rax + 8]
jne 0x423620
mov rax, qword [rax + 0x10]
test rax, rax
je 0x423656
lock add dword [rax + 0x10], 1
lock sub qword [r13], 2
add rsp, 0x108
pop rbx
pop rsi
pop rdi
pop rbp
pop r12
pop r13
pop r14
pop r15
ret
movabs rax, 0x1000000000000
test r9, rax
jne 0x423c61
mov rdx, r9
mov rcx, rbp
or rdx, rbp
and rcx, rax
test rdx, rax
je 0x423583
test rcx, rcx
je 0x42365c
cmp byte [rsi + 0xfe94], 0
je 0x42365c
jmp 0x423583
add ebp, 1
jmp 0x4235ed
mov rcx, r9
mov r10d, 1
mov qword [rsp + 0xd0], rdi
shr rcx, 0x2d
mov r13, r10
and ecx, 3
shl r13, cl
mov rcx, r8
shr rcx, 0x2d
add rax, r13
and ecx, 3
shl r10, cl
add rdx, r10
cmp rax, rdx
cmovae rdx, rax
add r12, 0x100070
mov rcx, r12
mov r13, rdx
mov qword [rsp + 0xd8], rdx
call fcn.004037e0
mov rax, qword [0x006bcaa8]
mov rdx, qword [rax + 0x100090]
mov r10, qword [rax + 0x100098]
sub r10, rdx
sar r10, 4
test r10, r10
je 0x42378f
cmp qword [rdx + 8], r13
mov rcx, r13
mov rax, rdi
cmovbe rcx, qword [rdx + 8]
cmp qword [rdx], rdi
cmovae rax, qword [rdx]
cmp rcx, rax
ja 0x423cb0
add rdx, 0x10
xor ecx, ecx
jmp 0x423786
mov rax, rdx
mov r8, r13
add rdx, 0x10
mov r15, rdi
cmp qword [rax + 8], r13
cmovbe r8, qword [rax + 8]
cmp qword [rax], rdi
cmovae r15, qword [rax]
cmp r8, r15
ja 0x423cb0
add rcx, 1
cmp rcx, r10
jne 0x423760
lock sub qword [r12], 2
mov rax, qword [0x006bcaa8]
mov r14d, 1
lea r12, [rax + 0x100070]
mov rcx, r12
call fcn.00403730
mov r13, qword [0x006bcaa8]
mov r15, qword [r13 + 0x100098]
mov r11, qword [r13 + 0x100090]
mov r10, r15
sub r10, r11
sar r10, 4
test r10, r10
je 0x423859
mov r8, qword [rsp + 0xd0]
mov r9, qword [rsp + 0xd8]
cmp qword [r11], r8
mov rdx, r8
cmovae rdx, qword [r11]
mov rax, r9
cmp qword [r11 + 8], r9
cmovbe rax, qword [r11 + 8]
cmp rdx, rax
jb 0x423cd2
lea rcx, [r11 + 0x10]
xor edx, edx
mov qword [rsp + 0x38], r11
jmp 0x42383b
mov rax, rcx
mov r14, r8
add rcx, 0x10
mov r11, r9
cmp qword [rax], r8
cmovae r14, qword [rax]
cmp qword [rax + 8], r9
cmovbe r11, qword [rax + 8]
cmp r14, r11
jb 0x423cd2
add rdx, 1
cmp r10, rdx
jne 0x423815
lea r14, [r10 + 1]
mov r11, qword [rsp + 0x38]
mov rdx, r15
cmp r10, r14
jae 0x423c37
mov rdx, qword [r13 + 0x1000a0]
sub rdx, r11
mov r8, rdx
sar r8, 4
cmp r14, r8
jbe 0x423e71
lea rax, [r8 + r8*4]
mov ecx, 0x10
mov qword [rsp + 0x38], r8
shr rax, 2
mov qword [rsp + 0x40], rdx
test rax, rax
cmove rax, rcx
cmp r14, rax
cmovae rax, r14
mov r15, rax
shl r15, 4
mov rcx, r15
call fcn.0041a780
mov r8, qword [rsp + 0x38]
test r8, r8
je 0x423c17
mov rdx, qword [rsp + 0x40]
mov rcx, qword [r13 + 0x100090]
test rdx, rdx
je 0x423c08
lea r8, [rax + 0x10]
cmp rcx, r8
lea r8, [rcx + 0x10]
setae r9b
cmp rax, r8
setae r8b
or r9b, r8b
je 0x423f39
cmp rdx, 0x16
jbe 0x423f39
mov r9, rcx
neg r9
and r9d, 0xf
cmp r9, rdx
cmova r9, rdx
xor r8d, r8d
test r9, r9
je 0x423a27
movzx r8d, byte [rcx]
cmp r9, 1
mov byte [rax], r8b
je 0x424277
movzx r8d, byte [rcx + 1]
cmp r9, 2
mov byte [rax + 1], r8b
je 0x42426c
movzx r8d, byte [rcx + 2]
cmp r9, 3
mov byte [rax + 2], r8b
je 0x424261
movzx r8d, byte [rcx + 3]
cmp r9, 4
mov byte [rax + 3], r8b
je 0x424256
movzx r8d, byte [rcx + 4]
cmp r9, 5
mov byte [rax + 4], r8b
je 0x42424b
movzx r8d, byte [rcx + 5]
cmp r9, 6
mov byte [rax + 5], r8b
je 0x424240
movzx r8d, byte [rcx + 6]
cmp r9, 7
mov byte [rax + 6], r8b
je 0x424235
movzx r8d, byte [rcx + 7]
cmp r9, 8
mov byte [rax + 7], r8b
je 0x42422a
movzx r8d, byte [rcx + 8]
cmp r9, 9
mov byte [rax + 8], r8b
je 0x4242a3
movzx r8d, byte [rcx + 9]
cmp r9, 0xa
mov byte [rax + 9], r8b
je 0x424298
movzx r8d, byte [rcx + 0xa]
cmp r9, 0xb
mov byte [rax + 0xa], r8b
je 0x42428d
movzx r8d, byte [rcx + 0xb]
cmp r9, 0xc
mov byte [rax + 0xb], r8b
je 0x424282
movzx r8d, byte [rcx + 0xc]
cmp r9, 0xd
mov byte [rax + 0xc], r8b
je 0x4242b9
movzx r8d, byte [rcx + 0xd]
cmp r9, 0xe
mov byte [rax + 0xd], r8b
je 0x4242ae
movzx r8d, byte [rcx + 0xe]
mov byte [rax + 0xe], r8b
mov r8d, 0xf
mov r11, rdx
sub r11, r9
lea r10, [r11 - 0x10]
mov qword [rsp + 0x50], r11
shr r10, 4
lea r11, [r10 + 1]
lea r10, [rdx - 1]
mov qword [rsp + 0x48], r11
shl r11, 4
sub r10, r9
mov qword [rsp + 0x38], r11
cmp r10, 0xe
jbe 0x423aa8
lea r10, [rax + r9]
mov qword [rsp + 0x58], rax
lea r11, [rcx + r9]
mov qword [rsp + 0x40], r10
xor r9d, r9d
mov r10, r9
mov rax, qword [rsp + 0x40]
add r9, 1
shl r10, 4
cmp r9, qword [rsp + 0x48]
movdqa xmm0, xmmword [r11 + r10]
movups xmmword [rax + r10], xmm0
jb 0x423a6e
mov r11, qword [rsp + 0x38]
mov rax, qword [rsp + 0x58]
add r8, r11
cmp r11, qword [rsp + 0x50]
je 0x423f4e
movzx r9d, byte [rcx + r8]
mov byte [rax + r8], r9b
lea r9, [r8 + 1]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 1]
mov byte [rax + r8 + 1], r9b
lea r9, [r8 + 2]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 2]
mov byte [rax + r8 + 2], r9b
lea r9, [r8 + 3]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 3]
mov byte [rax + r8 + 3], r9b
lea r9, [r8 + 4]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 4]
mov byte [rax + r8 + 4], r9b
lea r9, [r8 + 5]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 5]
mov byte [rax + r8 + 5], r9b
lea r9, [r8 + 6]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 6]
mov byte [rax + r8 + 6], r9b
lea r9, [r8 + 7]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 7]
mov byte [rax + r8 + 7], r9b
lea r9, [r8 + 8]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 8]
mov byte [rax + r8 + 8], r9b
lea r9, [r8 + 9]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 9]
mov byte [rax + r8 + 9], r9b
lea r9, [r8 + 0xa]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 0xa]
mov byte [rax + r8 + 0xa], r9b
lea r9, [r8 + 0xb]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 0xb]
mov byte [rax + r8 + 0xb], r9b
lea r9, [r8 + 0xc]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 0xc]
mov byte [rax + r8 + 0xc], r9b
lea r9, [r8 + 0xd]
cmp rdx, r9
jbe 0x423f4e
movzx r9d, byte [rcx + r8 + 0xd]
mov byte [rax + r8 + 0xd], r9b
lea r9, [r8 + 0xe]
cmp rdx, r9
jbe 0x423f4e
movzx edx, byte [rcx + r8 + 0xe]
mov byte [rax + r8 + 0xe], dl
mov rcx, qword [r13 + 0x100090]
mov qword [rsp + 0x38], rax
call fcn.00419760
mov rax, qword [rsp + 0x38]
shl r14, 4
mov qword [r13 + 0x100090], rax
lea rdx, [rax + r14]
add rax, r15
mov qword [r13 + 0x100098], rdx
mov qword [r13 + 0x1000a0], rax
mov r9, qword [rsp + 0xd0]
mov r10, qword [rsp + 0xd8]
mov qword [rdx - 0x10], r9
mov qword [rdx - 8], r10
lock sub qword [r12], 1
mov r12, qword [0x006bcaa8]
jmp 0x4235d9
test rbp, rax
jne 0x423c83
mov rdx, r9
or rdx, rbp
test rdx, rax
je 0x423583
test rbp, rbp
jns 0x42365c
jmp 0x423583
lea r8, str.____s0.IsAtomic____s1.IsAtomic_________0_
xor r9d, r9d
mov edx, 0x14ce
mov qword [rsp + 0x20], 0
lea rcx, str.gotsan.cpp
call fcn.00406910
nop word [rax + rax]
mov eax, dword [0x006bcaa0]
cmp eax, 1
jbe 0x423cc7
lea rcx, str.ThreadSanitizer:_suppressing_report_as_doubled__addr__n
call fcn.0040c3a0
lock sub qword [r12], 2
jmp 0x42365c
mov eax, dword [0x006bcaa0]
cmp eax, 1
jbe 0x423ce9
lea rcx, str.ThreadSanitizer:_suppressing_report_as_doubled__addr__n
call fcn.0040c3a0
lock sub qword [r12], 1
jmp 0x42365c
mov qword [rsp + 0x20], rcx
lea r8, str.__i_______size___
mov edx, 0x1df
lea rcx, str....._sanitizer_common_sanitizer_common.h
call fcn.00406910
lock sub qword [r13], 2
mov r8d, 1
movabs r13, 0x3ffffffffff
mov rdx, qword [rsi]
movsxd rax, dword [rsi + 0xfe88]
mov qword [rsp + 0x80], 0
lea r14, [rsp + 0x70]
mov rcx, rdx
and rdx, r13
mov qword [rsp + 0x88], 0
shr rcx, 0x2a
lea r12, [rsp + 0x80]
and ecx, 7
mov qword [rsp + 0xd0], 0
lea r15, [rsp + 0xd0]
add ecx, 0xe
mov r9, r12
mov dword [rsp + 0xd8], 0
mov dword [rsp + 0xdc], 0
shl r8, cl
mov rcx, rax
shl rax, 0x18
sub r8, 1
shl rcx, 0x11
mov qword [rsp + 0xe0], 0
add rax, rcx
and rdx, r8
mov rcx, rsi
mov qword [rsp + 0xe8], 0
lea rdx, [rax + rdx*8]
mov r8, r15
movabs rax, 0x56000000000
mov dword [rsp + 0xf0], 0
mov dword [rsp + 0xf4], 0
mov rdx, qword [rdx + rax]
mov qword [rsp + 0xf8], 0
mov rax, rdx
shr rax, 0x3d
test rax, rax
mov eax, 0
cmovne rdx, rax
call fcn.0043d380
mov rdx, qword [rsp + 0xd8]
mov r8, r14
mov rax, qword [rsp + 0xd0]
mov rcx, qword [0x006bcaa8]
mov qword [rsp + 0x78], rdx
mov edx, ebp
mov qword [rsp + 0x70], rax
call fcn.00408cb0
test al, al
je 0x423e85
mov rcx, qword [rsp + 0xf8]
test rcx, rcx
je 0x423e56
call fcn.00419760
mov rcx, qword [rsp + 0xe0]
test rcx, rcx
je 0x42365c
call fcn.00419760
jmp 0x42365c
shl r14, 4
lea rdx, [r11 + r14]
mov qword [r13 + 0x100098], rdx
jmp 0x423c37
lea rcx, [rsp + 0x90]
add r12, 8
mov edx, 1
mov qword [rsp + 0x90], 0
mov qword [rsp + 0x98], 0
mov qword [rsp + 0xa0], 0
call fcn.0041c460
mov rax, qword [rsp + 0x90]
mov rdx, r13
mov qword [rsp + 0x20], r12
lea r8, [r15 + 0x18]
mov r9, rax
mov qword [rsp + 0x38], rax
mov rax, qword [rsi + 0x50]
lea rcx, [rax + rax]
and rdx, rax
shr rcx, 0x33
call fcn.0041fc90
mov rdx, qword [rsp + 0xf0]
mov r8, r14
mov rax, qword [rsp + 0xe8]
mov rcx, qword [0x006bcaa8]
mov qword [rsp + 0x78], rdx
mov edx, ebp
mov qword [rsp + 0x70], rax
call fcn.00408cb0
test al, al
je 0x423f5a
mov rcx, qword [rsp + 0x90]
test rcx, rcx
je 0x423e44
call fcn.00419760
jmp 0x423e44
xor r8d, r8d
movzx r9d, byte [rcx + r8]
mov byte [rax + r8], r9b
add r8, 1
cmp r8, rdx
jne 0x423f3c
mov rcx, qword [r13 + 0x100090]
jmp 0x423c08
mov rax, qword [0x006bcaa8]
lea r12, [rsp + 0xb0]
cmp byte [rax + 0x1800ea], 0
jne 0x424144
mov r8, qword [rsp + 0x80]
test r8, r8
jne 0x424412
mov r8, qword [rsp + 0x88]
mov edx, 4
test r8, r8
cmovne ebp, edx
mov r15, qword [rax + 0x100068]
mov qword [rsp + 0x40], r8
lea r13, [r15 + 0x18]
mov rcx, r13
call fcn.00408750
mov r8, qword [rsp + 0x40]
mov edx, ebp
mov rcx, r12
call fcn.0041c280
lea rcx, [r12 + 9]
call fcn.00414d30
mov rax, qword [rsp + 0xd0]
mov rcx, r12
mov qword [rsp + 0x20], r14
mov rdx, qword [rsp + 0xd8]
mov r9, qword [rsi + 0x48]
mov r8, qword [rsp + 0x80]
mov qword [rsp + 0x70], rax
lea rax, [rsi + 0x58]
mov qword [rsp + 0x78], rdx
mov rdx, rbx
mov qword [rsp + 0x28], rax
call fcn.00422fb0
mov rax, qword [rsp + 0xe8]
mov rcx, r12
mov qword [rsp + 0x20], r14
mov rdx, qword [rsp + 0xf0]
mov r8, qword [rsp + 0x88]
mov r9, qword [rsi + 0x50]
mov qword [rsp + 0x70], rax
mov rax, qword [rsp + 0x38]
mov qword [rsp + 0x78], rdx
mov rdx, rbx
mov qword [rsp + 0x28], rax
call fcn.00422fb0
mov rax, qword [0x006bcaa8]
mov r8, qword [rsi + 0x48]
mov rcx, qword [rax + 0x100068]
lea rdx, [r8 + r8]
shr rdx, 0x33
mov rcx, qword [rcx + 0x98]
mov rdx, qword [rcx + rdx*8]
movabs rcx, 0x3ffffffffff
and rcx, r8
cmp qword [rdx + 0xc8], rcx
ja 0x4240a0
cmp qword [rdx + 0xd0], rcx
jb 0x4240a0
xor r8d, r8d
mov rcx, r12
call fcn.004225e0
mov rax, qword [0x006bcaa8]
mov rax, qword [rax + 0x100068]
mov rcx, qword [rsi + 0x50]
mov rax, qword [rax + 0x98]
lea rdx, [rcx + rcx]
shr rdx, 0x33
mov rdx, qword [rax + rdx*8]
movabs rax, 0x3ffffffffff
and rax, rcx
cmp rax, qword [rdx + 0xc8]
jb 0x4240e8
cmp rax, qword [rdx + 0xd0]
ja 0x4240e8
xor r8d, r8d
mov rcx, r12
call fcn.004225e0
test rdi, rdi
jne 0x42421a
mov rdx, r12
mov rcx, rsi
call fcn.00416d40
mov byte [0x006bcad9], 0
mov qword [0x006bcae0], 0
mov rcx, r12
call fcn.00419ce0
mov rcx, r13
call fcn.004087b0
mov rcx, r13
mov qword [r15 + 0x68], 0
call sub.kernel32.dll_ReleaseSRWLockExclusive
mov rcx, qword [rsp + 0x90]
test rcx, rcx
jne 0x423f2f
jmp 0x423e44
mov r8d, dword [rsp + 0xd8]
lea r13, [rsp + 0x60]
mov rdx, qword [rsp + 0xd0]
mov rcx, r13
shl r8, 3
call fcn.00403240
mov rdx, qword [rsp + 0x68]
mov rcx, r13
mov r8d, dword [rsp + 0xf0]
mov rax, qword [rsp + 0x60]
mov qword [rsp + 0xb8], rdx
mov rdx, qword [rsp + 0xe8]
shl r8, 3
mov qword [rsp + 0xb0], rax
call fcn.00403240
mov rax, qword [rsp + 0x60]
mov rdx, qword [rsp + 0x68]
mov qword [rsp + 0xc0], rax
mov rax, qword [0x006bcaa8]
mov qword [rsp + 0xc8], rdx
lea r13, [rax + 0x100070]
mov rcx, r13
call fcn.004037e0
mov rcx, r12
call fcn.0040c9c0
test al, al
jne 0x4243f0
lock sub qword [r13], 2
mov rax, qword [0x006bcaa8]
add rax, 0x100070
mov rcx, rax
mov qword [rsp + 0x40], rax
call fcn.00403730
mov rcx, r12
call fcn.0040c9c0
test al, al
je 0x4242c4
mov rax, qword [rsp + 0x40]
lock sub qword [rax], 1
jmp 0x423f1e
mov rdx, rdi
mov rcx, r12
call fcn.00421780
jmp 0x4240f1
mov r8d, 8
jmp 0x423a27
mov r8d, 7
jmp 0x423a27
mov r8d, 6
jmp 0x423a27
mov r8d, 5
jmp 0x423a27
mov r8d, 4
jmp 0x423a27
mov r8d, 3
jmp 0x423a27
mov r8d, 2
jmp 0x423a27
mov r8d, 1
jmp 0x423a27
mov r8d, 0xc
jmp 0x423a27
mov r8d, 0xb
jmp 0x423a27
mov r8d, 0xa
jmp 0x423a27
mov r8d, 9
jmp 0x423a27
mov r8d, 0xe
jmp 0x423a27
mov r8d, 0xd
jmp 0x423a27
mov r15, qword [0x006bcaa8]
mov rcx, qword [r15 + 0x100078]
mov rax, qword [r15 + 0x100080]
sub rax, rcx
sar rax, 5
lea r13, [rax + 1]
cmp rax, r13
jae 0x4243a2
mov r9, qword [r15 + 0x100088]
sub r9, rcx
mov r10, r9
sar r10, 5
cmp r13, r10
jbe 0x42441c
lea rax, [r10 + r10*4]
mov ecx, 0x10
mov qword [rsp + 0x50], r10
shr rax, 2
mov qword [rsp + 0x58], r9
test rax, rax
cmove rax, rcx
cmp r13, rax
cmovae rax, r13
shl rax, 5
mov rcx, rax
mov qword [rsp + 0x48], rax
call fcn.0041a780
mov r10, qword [rsp + 0x50]
test r10, r10
je 0x42437e
mov r10, qword [r15 + 0x100078]
xor ecx, ecx
mov r9, qword [rsp + 0x58]
jmp 0x424363
movzx edx, byte [r10 + rcx]
mov byte [rax + rcx], dl
add rcx, 1
cmp r9, rcx
jne 0x424357
mov rcx, qword [r15 + 0x100078]
mov qword [rsp + 0x50], rax
call fcn.00419760
mov rax, qword [rsp + 0x50]
mov rdx, r13
mov qword [r15 + 0x100078], rax
shl rdx, 5
add rdx, rax
add rax, qword [rsp + 0x48]
mov qword [r15 + 0x100080], rdx
mov qword [r15 + 0x100088], rax
mov rdx, qword [r15 + 0x100080]
lea rcx, [r12 + 0x10]
lea rax, [rdx - 0x20]
cmp rcx, rax
jbe 0x4243c0
lea rax, [rdx - 0x10]
cmp r12, rax
jb 0x4243fb
movdqa xmm0, xmmword [rsp + 0xb0]
movups xmmword [rdx - 0x20], xmm0
movdqa xmm0, xmmword [rsp + 0xc0]
movups xmmword [rdx - 0x10], xmm0
mov rax, qword [rsp + 0x40]
lock sub qword [rax], 1
mov rax, qword [0x006bcaa8]
jmp 0x423f76
lock sub qword [r13], 2
jmp 0x423f1e
xor eax, eax
movzx ecx, byte [r12 + rax]
mov byte [rdx + rax - 0x20], cl
add rax, 1
cmp rax, 0x20
jne 0x4243fd
jmp 0x4243da
mov ebp, 4
jmp 0x423f9a
mov rax, r13
shl rax, 5
add rax, rcx
mov qword [r15 + 0x100080], rax
jmp 0x4243a2