1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
| import ctypes from capstone import * from keystone import * from pwn import *
context.arch = 'amd64'
from pwn import * fuckTable = [0x00412F5E, 0xFFFFFA22, 0x14252652, 0xFFFFF9AC, 0x66CEF8EC, 0x0251D934, 0x0000009F, 0xC56FBF59, 0xFFFFFF61, 0xAA4D5B7C, 0x02745896, 0xFFFFFB7F, 0x34B6D31E, 0xFFFFFBB0, 0x302CC828, 0x02AC5992, 0xFFFFF524, 0x67CC4064, 0xFFFFF483, 0x8A5D9B26, 0x046254D0, 0xFFFFFC37, 0x074AB936, 0xFFFFFC7F, 0xB8EA37F7, 0x0CACD9FE, 0x0000007F, 0x6112F222, 0x00000002, 0x47A72561, 0x0F0FE6EB, 0xFFFFFBAE, 0x0A1411E7, 0xFFFFFC85, 0x3BE88B46, 0x0FC59DC2, 0xFFFFF72F, 0x7D12A5EF, 0xFFFFF691, 0xE67393D6, 0x10B1EBCA, 0x000001CF, 0x473A1295, 0x0000022E, 0x7BC15385, 0x1565D41D, 0xFFFFFDC4, 0x05D337BE, 0xFFFFFE7E, 0xE12982E4, 0x18909E40, 0x000005EB, 0xAE2337AF, 0x000005B1, 0x8E0AB2ED, 0x1AE7593A, 0xFFFFF3BC, 0x23E9058D, 0xFFFFF40B, 0xDFA6CF3E, 0x1B47DA81, 0xFFFFF8C3, 0x349CC616, 0xFFFFF7E9, 0x70C290D0, 0x1D816435, 0x00000002, 0x43F999C9, 0xFFFFFFD8, 0xAB0BCA16, 0x1DACC905, 0xFFFFFF54, 0x5C129962, 0xFFFFFD06, 0xE4515A41, 0x1E03B13C, 0xFFFFFF80, 0x7E763806, 0xFFFFF36A, 0xA25F3D93, 0x22FEFC06, 0xFFFFFCDD, 0xB94E0C2F, 0xFFFFFCB6, 0xF023033D, 0x26B1E690, 0xFFFFFDAB, 0xD0C7ED0C, 0xFFFFFE9B, 0xD49872C6, 0x2A652084, 0x000001EA, 0xDF9B65EE, 0x00000051, 0x5CC5AB90, 0x2FBEBD25, 0x0000048F, 0x60A4E9F2, 0x000009AF, 0x42FE8B0D, 0x34F12D90, 0x000004C0, 0xF6257D94, 0x00000480, 0x5227DE21, 0x35F591D0, 0xFFFFFCA1, 0xDA83E113, 0xFFFFF998, 0x805C7ECB, 0x37EB0B72, 0xFFFFF3EC, 0x7480201A, 0xFFFFF903, 0xAC977E11, 0x389A58A8, 0x00000189, 0xE4005CD7, 0xFFFFFDEC, 0xB043695F, 0x3CB24155, 0x0000084C, 0x8ACB6FF1, 0x00000899, 0xACB471A5, 0x3DCBCDE3, 0x000007A8, 0xA84E3072, 0x00000384, 0xB2624259, 0x3F5290DE, 0xFFFFFE25, 0x8AC11F92, 0xFFFFFD8A, 0x44ACCD78, 0x47FF9B7E, 0x00000A81, 0x9833BF9C, 0x00000B35, 0x9B7199CD, 0x4C7867E6, 0x0000011C, 0x68BB4F80, 0x0000002E, 0x75B675CD, 0x53ADCD80, 0x000004E8, 0x6AA4F705, 0x00000452, 0xBA7C314B, 0x566E1640, 0x00000C8E, 0x203E3737, 0x00000C38, 0xF9367ED9, 0x5EDBB130, 0x000004FF, 0xD4F71A40, 0x000002AA, 0x35DC4141, 0x6C29C83A, 0x00000013, 0xBEAD8A76, 0xFFFFFFB5, 0x7A8A43EF, 0x6E036C9C, 0x00000BD5, 0x225F81E0, 0x00000D89, 0x3C25944D, 0x6FDCCE50, 0x00000605, 0xD3126740, 0x000003D5, 0xA3DA544C, 0x7132D345, 0x0000064E, 0x00915A5A, 0x000006DD, 0x5BCB6B22, 0x720DBD5C, 0x000008C3, 0x64DCFDF6, 0x00000858, 0x190B20BB, 0x7A035AD4, 0x00000424, 0x4DD955FB, 0x000004BF, 0xF65150B5, 0x7CBAED22, 0x00000AA1, 0x62CC154B, 0xFFFFFC58, 0x8DD5CEDB, 0x7EBF8EA8, 0x00000458, 0xCE844A0E, 0xFFFFF734, 0x9079D6BA, 0x804885CD, 0x000007BB, 0x89A8DA66, 0x00000136, 0x7185B813, 0x82190F37, 0xFFFFF58C, 0x013FA7D4, 0xFFFFF4AB, 0x7518093D, 0x83F7826A, 0x00000917, 0x2F33C3DD, 0xFFFFFBF0, 0x02A289B1, 0x8481BFD5, 0xFFFFF927, 0x72EED2D1, 0xFFFFF80A, 0xF46FD351, 0x85A69D6E, 0x000000B4, 0x27A3BB0F, 0x00000181, 0x49235BC0, 0x85F73150, 0x00000259, 0xA300692F, 0x000009BD, 0x5A3E46A9, 0x86E2497A, 0xFFFFFB53, 0xE7614707, 0xFFFFFBB3, 0xFA190B2A, 0x8B261F60, 0xFFFFF323, 0x97B9CC33, 0xFFFFFAB7, 0x2CB73BF0, 0x8B42B00C, 0x00000871, 0xA57A2DE3, 0x00000797, 0xA73082D6, 0x8E4C5C94, 0x000000FE, 0xEE4B594B, 0xFFFFF999, 0xDCE3B74D, 0x913A9FDB, 0xFFFFFE1C, 0x1BFFA329, 0xFFFFFD31, 0x49B21C95, 0x922BFB96, 0xFFFFF61B, 0x4FAFD829, 0xFFFFFBBA, 0x6BD5D317, 0x9F4B8702, 0xFFFFFEC1, 0xB691AD49, 0xFFFFFEF2, 0xCE6C6FE9, 0xA2CEAAA6, 0xFFFFFD89, 0x60E52701, 0xFFFFFCB2, 0x25AD9A9D, 0xAA970D72, 0xFFFFF2BB, 0xC1F58CAC, 0xFFFFF2AB, 0x20B8FE22, 0xABC02B72, 0xFFFFF94B, 0xFF6EA5A6, 0xFFFFFA6A, 0x1CD46647, 0xAE535E9E, 0x000003EC, 0x31246F6B, 0x0000035B, 0x50E2A20A, 0xB7337941, 0xFFFFF856, 0xD1A79AD7, 0xFFFFF955, 0x14673B75, 0xBB8DB95E, 0xFFFFFEEB, 0x6A7F1E5A, 0xFFFFF3B3, 0x1EF2F3AA, 0xBC1EDA22, 0xFFFFFB90, 0xE247955F, 0xFFFFFCE6, 0xA0351A85, 0xBCD91FE8, 0x0000008C, 0x71A348B9, 0x00000030, 0x821754EF, 0xBD38E305, 0xFFFFFF59, 0xE694333F, 0xFFFFFEF9, 0x436B1A45, 0xBE1AA65A, 0xFFFFF93D, 0x8761A810, 0xFFFFFEEB, 0xB2DB19FA, 0xC052453C, 0x000009B5, 0xB05027D7, 0x000009C5, 0xBCA91679, 0xC4A2D780, 0x000008B9, 0xE42FD068, 0x000007C1, 0x9F8B2B83, 0xC6A236BA, 0xFFFFFDBB, 0x20649A12, 0xFFFFFD09, 0x5F73FD94, 0xC6BB5160, 0xFFFFFE90, 0x0ED42674, 0xFFFFFF4B, 0xA76699CC, 0xCB74E940, 0x000003E3, 0x7DA194FF, 0xFFFFFCDA, 0xB23E5B15, 0xD027B387, 0xFFFFF701, 0x880BCC4F, 0xFFFFF785, 0xFEA3D685, 0xD1127D6B, 0xFFFFFAC0, 0xDF3D499A, 0x00000362, 0x84B7777D, 0xD6F5F913, 0xFFFFFCCD, 0xA5D89DB8, 0xFFFFFCAB, 0xF69BAE29, 0xDD04F828, 0xFFFFF705, 0xE18F3BA0, 0xFFFFF64D, 0xEBC799B0, 0xDDF22CB8, 0x0000075D, 0x47F7B857, 0x000001B3, 0x5C1CDEA9, 0xDF34D0A8, 0x0000014D, 0xBFE2CAD5, 0x00000201, 0x1F0C8A89, 0xE146EA40, 0x0000046D, 0x189EB8F9, 0xFFFFF6FB, 0x4CA1090D, 0xE231C560, 0x00000710, 0x2E586529, 0xFFFFFF17, 0x0E9AA776, 0xE2FC6838, 0x00000733, 0xB73DDD7A, 0x00000753, 0x14A1BDE4, 0xE44AE35D, 0x000002C8, 0x46B1F3D1, 0xFFFFFA2D, 0xD2295816, 0xE5AF4AB1, 0x00000DB0, 0x0AFF4FF9, 0x00000D91, 0xB17A4340, 0xE7E3CF21, 0x00000656, 0x9FC50924, 0x00000658, 0x31615022, 0xE8815965, 0x00000BCB, 0x6F51A655, 0x00000C0A, 0x72F5680C, 0xEBDF0F14, 0xFFFFF2B1, 0xD36EC5D4, 0xFFFFF239, 0x3B711343, 0xEC12E59B, 0x00000270, 0x3A38D2E8, 0x0000023D, 0x68D07674, 0xF4013920, 0x00000703, 0xD83CCFAA, 0x000007BA, 0x46891EEB, 0xF6847EC1, 0xFFFFFE62, 0x6D4BAAFC, 0xFFFFFD92, 0x5E6F5A94]
size_table = [0x02F73020, 0x00000015, 0x09D3473A, 0x00000051, 0x0EF87B55, 0x0000000D, 0x147CB028, 0x00000023, 0x15F833AA, 0x00000030, 0x17086780, 0x00000018, 0x1733A9D4, 0x00000014, 0x17D61EE8, 0x00000051, 0x1D52F19E, 0x00000011, 0x1F732DE0, 0x0000000D, 0x1FBECFAD, 0x0000001B, 0x245BD7C8, 0x00000055, 0x25E7ABEE, 0x00000009, 0x2882C190, 0x000000A2, 0x2A2084A0, 0x00000075, 0x326AA6AE, 0x00000036, 0x33074A36, 0x00000024, 0x3440BD69, 0x0000002C, 0x362A1FC3, 0x0000002C, 0x3C0450D0, 0x0000000D, 0x3CB575FD, 0x00000011, 0x41B3B26E, 0x0000004E, 0x46005120, 0x00000011, 0x465A72CF, 0x00000002, 0x492145A0, 0x0000000D, 0x49AA4CE0, 0x0000002D, 0x4BD63647, 0x0000004E, 0x4BF84A87, 0x0000000D, 0x4D102445, 0x00000033, 0x4D4D3C55, 0x0000001B, 0x53723232, 0x0000000A, 0x5809B5CB, 0x000000A2, 0x5B12FFCE, 0x00000015, 0x5B1F3000, 0x00000051, 0x5D9FBD20, 0x00000027, 0x6219EED9, 0x0000008A, 0x65D82D17, 0x0000004C, 0x67F5671A, 0x00000063, 0x6CE2CBC1, 0x00000033, 0x718A739C, 0x0000000B, 0x71A62DD7, 0x00000015, 0x7693A1F6, 0x00000014, 0x7A473FB0, 0x00000047, 0x7AEFEDDC, 0x00000011, 0x7AF2CF90, 0x0000004F, 0x7BE0B8B0, 0x0000001B, 0x80EB3E88, 0x0000000A, 0x8213506A, 0x0000000C, 0x82468114, 0x00000011, 0x86B872A2, 0x0000001C, 0x87FBD296, 0x00000019, 0x88719339, 0x00000016, 0x89E2630A, 0x00000024, 0x8CB6536E, 0x0000004E, 0x92316E00, 0x00000015, 0x9415A51E, 0x0000004F, 0x94D658E0, 0x0000002B, 0x97E8DFCD, 0x00000036, 0x992E3874, 0x0000002A, 0x9B06958D, 0x00000030, 0x9B36B480, 0x0000000D, 0xA03CEFAD, 0x0000005A, 0xA39F47E6, 0x0000004E, 0xA946DEC4, 0x000000B4, 0xAE6173DC, 0x00000051, 0xB044A68D, 0x0000008C, 0xB29E36A8, 0x0000000B, 0xB82781F4, 0x0000000D, 0xC14DFAF8, 0x00000011, 0xC3F42E20, 0x0000001E, 0xC5E0065E, 0x00000067, 0xCAD68B21, 0x00000039, 0xCBF29AC7, 0x00000011, 0xCE8729BC, 0x0000001B, 0xD2A85A94, 0x00000004, 0xD34FA4F3, 0x00000011, 0xD64611B0, 0x00000058, 0xD814FD56, 0x00000018, 0xDD386A80, 0x0000000A, 0xDE82DFAC, 0x00000011, 0xEC68D16F, 0x0000001B, 0xEEDE845B, 0x0000003F, 0xF235F260, 0x0000008D, 0xF9AA1F0B, 0x00000087, 0xFC200887, 0x00000011, 0xFED657A3, 0x0000000C, 0x00000000] zf_0_jmp = 0 zf_0_key = 1 zf_1_jmp = 2 zf_1_key = 3
code_bin = open("code.bin", "rb").read() print("code size: ", hex(len(code_bin)))
def get_size(key): for i in range(85): if size_table[i * 2] == key: return size_table[i * 2 + 1] return None
def get_jmps(key): for i in range(85): base = i * 5 if fuckTable[base] == key: return fuckTable[base + 1: base + 5] print("not found2: ", hex(key)) return None
def fuck(prev_key, rip): return rip ^ prev_key ^ ((rip * prev_key) & 0xffffffff) ^ (prev_key + rip)
def deXor(data, key): key = p32(key) data = bytearray(data) for i in range(len(data)): data[i] ^= key[i % 4] return data
def decrypt_block(key, rip): key2 = fuck(key, rip) blockSize = get_size(key2)
if blockSize is None: print("Not found1: rip:%x key:%x" % (rip, key2)) return None, None, None
offset = rip - 0x1000 code_data = code_bin[offset: offset + blockSize] code_data = deXor(code_data, key) next_rip = rip + blockSize - 2 key2 = fuck(key, next_rip)
jmps = get_jmps(key2)
return code_data, jmps, next_rip
class Node: def __init__(self, data, rip): self.code_data = data self.child1 = 0 self.child2 = 0 self.end_rip = None self.rip = rip
def disasm(data, baseaddr): md = Cs(CS_ARCH_X86, CS_MODE_64) ins = '' for i in md.disasm(data, baseaddr): asm_code = "%s\t%s" % (i.mnemonic, i.op_str) ins += asm_code + "\n" return ins
def buildNode(key_, rip_): work_queue = [(key_, rip_)] log_map = {} while len(work_queue) > 0: T = work_queue[0] work_queue.remove(T) key, rip = T
if rip in log_map: continue
if rip == 0x10A3: key -= 0x2B09B990 rip = 0x1EEC
code_data, jmps, next_rip = decrypt_block(key, rip)
if code_data is None: continue
node_cur = Node(code_data, rip)
node_cur.end_rip = next_rip log_map[rip] = node_cur
if jmps is None: continue
asm_text = disasm(node_cur.code_data, rip)
newrip = next_rip + ctypes.c_int32(jmps[zf_0_jmp]).value node_cur.child1 = newrip if newrip not in log_map: work_queue.append(((key + jmps[zf_0_key]) & 0xffffffff, newrip))
if 'qword ptr fs:[' in asm_text.splitlines()[-1]: continue
newrip = next_rip + ctypes.c_int32(jmps[zf_1_jmp]).value node_cur.child2 = newrip if newrip not in log_map: work_queue.append(((key + jmps[zf_1_key]) & 0xffffffff, newrip))
jmptables = {} for i in sorted(log_map.keys()): if log_map[i].child1 is None: log_map[i].child1 = 0
if log_map[i].child2 is None: log_map[i].child2 = 0
jmptables[hex(log_map[i].end_rip)] = (hex(log_map[i].rip), hex(log_map[i].child1), hex(log_map[i].child2)) print("len:", len(jmptables)) print(jmptables)
all_asm = '' for i in sorted(log_map.keys()): print(hex(i)) node = log_map[i] if i == 0x1EEC: all_asm += "_0x10a3:\n"
all_asm += "_" + hex(i) + ":\n" all_asm += disasm(node.code_data, i) if node.child1 != 0 and node.child2 != 0: jmp_code = "jz _" + hex(node.child2) + "\n" jmp_code += "jmp _" + hex(node.child1) + "\n"
elif node.child1 == 0 and node.child2 != 0: jmp_code = "jmp _" + hex(node.child2) + "\n"
elif node.child2 == 0 and node.child1 != 0: jmp_code = "jmp _" + hex(node.child1) + "\n" else: jmp_code = '\n'
all_asm += jmp_code
all_asm = all_asm.replace("endbr64", "nop\n" * 4) code_bin = asm(all_asm) open('1.bin', 'wb').write(code_bin) print(all_asm) print("all nodes: ", len(log_map))
buildNode(0x3265B1F5, 0x1000)
|