Whatver

Day 19/decode.py

@@ -0,0 +1,75 @@
+#!/usr/bin/python
+
+		# document
+		# 		.querySelector('.validate')
+		# 		.addEventListener(
+		# 				'click',
+		# 				function() {
+		# 					var promoCode = document
+		# 							.getElementById('promoCode').value;
+		# 					var strptr = Module._malloc(promoCode.length + 2);
+		# 					Module.writeAsciiToMemory(promoCode, strptr, false);
+        #
+		# 					var retstrptr = Module.ccall('checkPromoCode',
+		# 							'number', [ 'number' ], [ strptr ]);
+        #
+		# 					var retstr = Pointer_stringify(retstrptr);
+		# 					document.getElementById("flag").innerHTML = "<h2>Your flag is</h2><p>"
+		# 							+ retstr + "</p>";
+		# 				});
+        #
+
+# var promoCode = document.getElementById('promoCode').value;
+# var retstrptr = Module.ccall('checkPromoCode', 'number', [ 'number' ], [ strptr ]);
+# var retstr = Pointer_stringify(retstrptr);
+
+# promoCode = ""
+# strptr = [0 for i in range(len(promoCode) + 2)]
+# retstr = hex(strptr)
+#
+#
+# if strptr & 3 == 0:
+#     r2 = trptr
+# else
+
+def ascii(h):
+    return ''.join([chr(int(h[i:i+2], 16)) for i in range(0,len(h),2)])
+
+# def f32(ptr):
+
+
+
+gvar_400 = 'F0BC51F36874F2C1' # 8 Bytes
+gvar_408 = 'E357D1A08AAB8700' # 8 Bytes
+gvar_410 = '2FEB8572F31271DE' # 8 Bytes
+gvar_418 = 'ABABA787'         # 6 Bytes
+gvar_41C = '74FF'             # 2 Bytes
+
+gvars = [gvar_400, gvar_408, gvar_410, gvar_418, gvar_41C]
+r11 = ''.join(gvars)
+r11 = [int(r11[i:i+2], 16) for i in range(0, len(r11), 2)] # 30 Bytes
+r22 = [0 for i in range(15)]                               # 15 Bytes
+r33 = "HV18-TRYH-ARDE-RTRY_HARD_ER!!"
+
+input = [0 for i in range(15)] # ???
+r44 = 0
+r55 = 165
+
+for r59 in range(15):
+    r60 = input[r59] * r55 + 1337
+    r44 = input[r59] + r44 + r60
+    r61 = r60 % 255
+    r22[r59] = r61
+    r55 = r61
+
+print(r44)
+
+result = []
+for i in range(30):
+    var142 = r11[i]
+    var153 = r22[i%15]
+    result.append(chr(var142 ^ var153))
+
+print(''.join(result))
+
+# F0 ^ r55 = 48

Day 19/decode_new.py

@@ -0,0 +1,63 @@
+#!/usr/bin/python
+
+gvar_400 = "217A1F180C53651F" # 8 Bytes
+gvar_408 = "3D597206213A4104" # 8 Bytes
+gvar_410 = "695676183C433A2B" # 8 Bytes
+gvar_418 = "41360D"           # 3 Bytes
+gvar_41C = "745C00"           # 3 Bytes
+gvar_420 = "690000000D"       # 5 Bytes
+gvar_428 = "6E00000038"       # 5 Bytes
+gvar_430 = "370000006F"       # 5 Bytes
+gvar_438 = "290000006B"       # 5 Bytes
+gvar_440 = "3600000008"       # 5 Bytes
+gvar_448 = "1C00000023"       # 5 Bytes
+gvar_450 = "6F0000006E"       # 5 Bytes
+gvar_458 = "2E00000000"       # 1 Byte
+
+def memcpy(dest, src, offset, len):
+    for i in range(len):
+        dest[offset + i] = src[i]
+
+# r22 = char[32]
+# r22[0:7]   = gvar_400
+# r22[8:15]  = gvar_408
+# r22[16:23] = gvar_410
+# r22[24:27] = gvar_418
+# r22[28:31] = gvar_41C
+
+# r33 = char[20]
+# r33[0:4]   = gvar_420
+# r33[5:9]   = gvar_428
+# r33[10:14] = gvar_430
+# r33[15:19] = gvar_438
+# r33[8:12]  = gvar_440
+# r33[10:14] = gvar_448
+# r33[12:16] = gvar_450
+# r33[14:18] = gvar_458
+
+# r42 = "HV18-TRYH-ARDE-RTRY_HARD_ER!!"
+
+r22 = ["0" for i in range(32)]
+r33 = ["0" for i in range(20)]
+r42 = "HV18-TRYH-ARDE-RTRY_HARD_ER!!"
+input = 0
+
+memcpy(r22, gvar_400, 0, 8)
+memcpy(r22, gvar_408, 8, 8)
+memcpy(r22, gvar_410, 16, 8)
+memcpy(r22, gvar_418, 24, 4)
+memcpy(r22, gvar_41C, 28, 4)
+
+memcpy(r33, gvar_400, 0, 5)
+memcpy(r33, gvar_428, 5, 5)
+memcpy(r33, gvar_430, 10, 5)
+memcpy(r33, gvar_438, 15, 5)
+memcpy(r33, gvar_440, 8, 5)
+memcpy(r33, gvar_448, 10, 5)
+memcpy(r33, gvar_450, 12, 5)
+memcpy(r33, gvar_458, 14, 5)
+
+
+r3 = 0
+for r43 in range(0, 15):
+    if

Day 19/test.cpp

@@ -0,0 +1,5 @@
+int main() {
+  unsigned int i = 10;
+  unsigned int *par0 =  &i;
+  int r3 = (int)par0;
+}